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helen
September 10th, 2005, 08:41 PM
One of things that I do as a hobby is build and fly model rockets. I will admit by building skills is not as good as my flying skill but my rockets do fly safely. It's been a long while since I have flown but I do have photos (http://www.hawaiistories.com/gallery/album61) of some of the launches at the HawaiiStories Gallery. As well as some photos (http://www.hawaiistories.com/gallery/album01) taken from the vantage point of a model rocket in flight.

Menehune Man
September 10th, 2005, 09:59 PM
Hey those are pretty cool rockets and the photos taken from them are really neat too. Looks like a good hobby to have. My hobby lately has been geocaching. The finding of hidden treasure boxes while hiking or otherwise exploring. It's fun too.

craigwatanabe
September 11th, 2005, 12:18 AM
Is Geocaching where a hiker leaves something behind for another hiker to find using known clues? I kinda read about that a few years ago in the papers.

As for model rocketry, I remember back in the 60's when Kahala Mall was called the Waialae Shopping Center, Cyril's Cyclery sold Estes model rockets in their mall store. Then Pete's Modelcraft (where Jamba Juice is now) sold model rockets. Ahh those nichrome wires.

So what's the biggest engines out there now? I remember class C and D engines and those puny A engines without the wadding for the chute. When I was a kid back in the late 60's one of my neighbors had the Saturn Five multi stage model rocket but he never launched it because there was no place big enough to handle a three stager without being blown into the ocean by the trades. I had an Estes Vanguard III single stage rocket that used a single class C engine.

Those were fun days, I'm glad to see model rocketry is still alive and well.

helen
September 11th, 2005, 01:40 AM
The most powerful engine that Estes makes is the E9 engine. The first link in my original post has a video of a launch by an E9-4 engine on a model rocket called the Broadsword that is about 3 feet tall, 2.8 inches in diameter and weighs around 8-9 ounces. I am guessing for that launch it went some where between 500 to 600 feet.

Another company called Aerotech makes engines in the G range for standard model rocketry, but also makes engines more powerful in the H to M range but they kind of cost an arm and a leg to buy as well as other forms to fill out, licenses to get.

The Saturn V was never a multi stage rocket, it was a multi engine cluster but you could fly it as single engine D engine powered rocket instead of the 3 C engines firing off at the same time. A multi stage rocket is where one engine fires, then fires off another engine while dropping a stage behind.

craigwatanabe
September 11th, 2005, 01:44 AM
wow I guess model rocket engines have evolved! And did you know it's almost 2am? I think we're the ony ones chatting here :D

cezanne
September 11th, 2005, 11:38 AM
Rockets were my thing in the early 70s as a kid. Pete's in Ala Moana and Kamehaheha SC were the pitstops for my mom. Whatever happened to that cool yellow Cox launchpad? I remember building them and being afraid to put the C engines in them for fear of losing them. I think the longest I had a rocket was 4 launches before I lost them.

Haha I remember sending cash (bills and coins) to buy stuff mailorder from Estes and Centuri and still get my order.

helen
September 11th, 2005, 08:15 PM
I did model rocketry during high school in the 1970's. Sort of let it go when I was in college, but I would look over the model rocket stuff at Pearlridge's Hobby Company whenever I was in the area.

Got back in the hobby in 1994, been in the hobby since then but latey I haven't flown rockets as often as I did in 1994-1999.

craigwatanabe
September 11th, 2005, 10:19 PM
When I was a teenager back in the early 70's I launched a small C-engine model rocket from my front yard at 5123 Kilauea Avenue where I grew up in. My rocket failed to deploy the parachute and it came crashing down in my neighbor's locked backyard, then the wadding was expelled out of the rocket tube. From the other side of the wood fence I saw smoke billowing from his backyard as the sparks from the delay ignited some dead grass behind the fence gate.

I scaled the fence and grabbed his garden hose and put it out, burying the burn't grass before my neighbors came home. After that I never launched another rocket again. Just not enough space in my neighborhood to do that kind of stuff.

Pretender
September 12th, 2005, 10:50 PM
Wow, this brings back memories. I remember being in a model rocket club during the early 70's, Honorocs. As I remember competition flying was down at Kapiolani Park, next to the old driving range. During windy days, it would still blow many of the rockets out to sea. Club meetings were often at the McCully Library.

cezanne
September 12th, 2005, 11:14 PM
Hey anyone seen the movie October Sky? That was a cool rocket movie. Man I probably coulda woulda shoulda been a rocket scientist. :)

Composite 2992
September 12th, 2005, 11:24 PM
Tradewinds swiped the rockets I built when I was a kid in the '60s. I remember a Wac Corporal with a B3-7 engine sailing off toward Queen's Surf from Kapiolani Park, never to be seen again. At that point I wished there were something that would delay the parachute opening until a LOT later!

Then in high school a small group of us actually went through the tedious process of figuring out how to make our own small engines. Was a real trick trying to make them work -- they'd either just burn up in place or explode.

Finally figured it all out and got some small ones to actually fly. And none of us lost our fingers over it!

Only one of our group ever became an aerospace engineer. The rest got into other things.

I still check out the latest developments in model rockets just out of curiosity. Some have actually launched wireless remote videocameras which is pretty cool. And, of course, there's that long-time interest in model airplanes, too.

When I "grew up" I actually learned to fly the real thing and logged a few hundred hours when it was barely affordable. Sure miss it all sometimes.

helen
September 12th, 2005, 11:40 PM
A couple of years (has it been that long) ago I took some of my digital cameras and a Kodak APS camera to Magic Island and take some pictures with those cameras.

The link to the gallery of photos is here (http://www.hawaiistories.com/gallery/Oahu-III), while a picture of the 5 cameras used is here (http://www.hawaiistories.com/gallery/Oahu-III/cameralist). The two cameras from Aiptek were the ones that was placed on a model rocket. The photos taken from the model rocket and shown here are from the Pencam II camera. Haven't worked out the bugs with the Aiptek Mini Pencam.

speedtek
November 27th, 2005, 10:50 AM
Me and my son go rocket shooting just about every week at Halawa park.
Sandy's is too ridiculous. Lost our first rocket we launched a few weeks ago.
Is there any rocket clubs? I use to belong to one in 1970. i forgot the name.
But the pres at the time was Michael Okuda who is a die hard trekkie fan who use to show up at lauches and meetings (Manoa Library) wearing a mustard Star Trek shirt like Capt. Kirk wore! He went on to even make weapon props for the ST movies and work on the sets. Shoot for the stars?

speedtek
November 27th, 2005, 02:36 PM
wow I guess model rocket engines have evolved! And did you know it's almost 2am? I think we're the ony ones chatting here :D

Craig - They always had the "D E F's" we just could not afford them! Maybe the "D's" $3.95 for 3 back in the 70's not they are $9.00! The "E & F's" were Centuri engines. Remember the one we lost at Waialae Iki Park? went into the golf course.

Pretender
November 27th, 2005, 09:46 PM
Is there any rocket clubs? I use to belong to one in 1970. i forgot the name.
But the pres at the time was Michael Okuda who is a die hard trekkie fan who use to show up at lauches and meetings (Manoa Library) wearing a mustard Star Trek shirt like Capt. Kirk wore! He went on to even make weapon props for the ST movies and work on the sets. Shoot for the stars?

That club was the Honorocs! Meetings were also at the Moiliii library. The first time I saw the movie, "Dark Star" was at one of those meetings.

helen
November 27th, 2005, 10:28 PM
They always had the "D E F's" we just could not afford them! Maybe the "D's" $3.95 for 3 back in the 70's not they are $9.00! The "E & F's" were Centuri engines. Remember the one we lost at Waialae Iki Park? went into the golf course.

I think back in those days I could afford to buy those engines and the rockets if I saved enough money but the main problem for me was where to fly. I was losing Alpha's on A8-3 from my folks background, there was no way to fly a E engine rocket.

speedtek
November 28th, 2005, 01:10 PM
That club was the Honorocs! Meetings were also at the Moiliii library. The first time I saw the movie, "Dark Star" was at one of those meetings.

Ok whick guy were you? I was the biggest guy there. always carried my rockets in grocery bags and a large craftsman tool box. My rockets were the ugliest for the group. hehehe. I made a lot of home mades which were always going everywhere.

My favorite rocket is the Cherokee-D, It had nine lives. Lost once in the iron wood tree (recovered 2 weeks later) and it went swimming in the ocean (recovered by surfers and lived to fly again). Gone now, mom threw it out. Now I have parts to build 10 of them. also have a BT-50 version.

speedtek
November 28th, 2005, 01:24 PM
Launch: Sunday Nov. 27, 2005, 1:00 PM
Site: Halawa
Rocket: CBR (Chinese Bottle Rocket)
Wind: very little

First Flight: 1/2A6-2
Height: 200 Feet
Notes: Recovered
Problems: Single streamer came down too fast, smashed bodt tube.

Second Flight: A6-4 Quest
Height: 450 Feet
Notes: Recovered
Problems: Triple streamer came down good pole stuck in ground.

Summary: Excellent straight flights for no fins. Easy to build.
working on a bigger D-Engine one now! Only draw back it the wood stand
gets a little burnt.
The Chinese are too smart, no fins and it flys straight. Less cost.
The German V's with fins were more dangerous.

http://www.geocities.com/speedexx/rockets/cbr01.jpg
My son hooking it up.

http://www.geocities.com/speedexx/rockets/cbr02.jpg
Must be getting old, reflexes getting slow.

http://www.geocities.com/speedexx/rockets/cbr03.jpg
Recovery in the grass right side up. YEAH!

speedtek
November 28th, 2005, 01:28 PM
I think back in those days I could afford to buy those engines and the rockets if I saved enough money but the main problem for me was where to fly. I was losing Alpha's on A8-3 from my folks background, there was no way to fly a E engine rocket.

We have been having good luck at Halawa. We recovered many rockets on C-6 engines. Parachute and Streamers. Lost only 2 on those engines because the shock cord broke/melted and the nose cones floated away.

synopsis: when using bigger engines use more wadding? i had 4 sheets in there. I will be changing to Kevlar thread soon.

craigwatanabe
November 28th, 2005, 04:04 PM
Aha! Okay Speedtek I'll keep your name a secret. Derek gave you away. I shoulda known :D

Yeah I remember the one that went Makai at Waialae Iki park. That was a nice semi-metallic one. I remember saying: 10, 9,8,7,6,5,4 uhhh Gary time to get away from the launch pad! 3-2-1!

Still waiting for Nero!

Craig

craigwatanabe
November 28th, 2005, 04:11 PM
Me and my son go rocket shooting just about every week at Halawa park.
Sandy's is too ridiculous. Lost our first rocket we launched a few weeks ago.
Is there any rocket clubs? I use to belong to one in 1970. i forgot the name.
But the pres at the time was Michael Okuda who is a die hard trekkie fan who use to show up at lauches and meetings (Manoa Library) wearing a mustard Star Trek shirt like Capt. Kirk wore! He went on to even make weapon props for the ST movies and work on the sets. Shoot for the stars?

Michael Okuda...boy that brings back memories. Not only is he a die-hard Trekkie that designed some of the props he also designed the set for the first Star Trek Movie... Remember? Look at the first series of Star Trek Movies starting with "The Movie" you'll see Michael Okuda's name on the credits.

And the great part of it all is that he's a local boy! He used to work for Queen's Hospital when he got the contract to design the set.

He told me once that on the Captain's chair they had to replace the leather with something that didn't squeak when someone sat there and on one of the armrests there is a sticker that says, "Warp 5 it not only saves lives...it's the law"

speedtek
November 28th, 2005, 05:39 PM
Aha! Okay Speedtek I'll keep your name a secret. Derek gave you away. I shoulda known :D

Yeah I remember the one that went Makai at Waialae Iki park. That was a nice semi-metallic one. I remember saying: 10, 9,8,7,6,5,4 uhhh Gary time to get away from the launch pad! 3-2-1!

Still waiting for Nero!

Craig

It was called a Centuri "Quasar" same as my CB name....

craigwatanabe
November 28th, 2005, 05:45 PM
It was called a Centuri "Quasar" same as my CB name....


Yep catch ya on the flip side Quasar...this is KLO-9584 the Essex...we're 10-8 and 10-10 on the side.

helen
November 28th, 2005, 08:47 PM
Michael Okuda...boy that brings back memories. Not only is he a die-hard Trekkie that designed some of the props he also designed the set for the first Star Trek Movie... Remember? Look at the first series of Star Trek Movies starting with "The Movie" you'll see Michael Okuda's name on the credits.
He didn't start working until the 4th movie, but he did the text commentaries for the DVD versions.

speedtek
November 28th, 2005, 09:11 PM
Michael Okuda
From Wikipedia, the free encyclopedia.
Jump to: navigation, search
Michael Okuda is an artist who is best known for his work on Star Trek.

In the mid 1980s he designed the look of animated computer displays for the Enterprise-A bridge in Star Trek IV: The Voyage Home.

This lead to a staff position on Star Trek: The Next Generation in 1987 as a scenic artist, adding detail to set designs and props. His most famous contribution to The Next Generation is the look of the fictional LCARS computer system used throughout the Enterprise-D and other Starfleet starships, a style that has come to be known among fans as "okudagrams".

Michael also served as a technical consultant on Star Trek along with Rick Sternbach, advising the script-writers on the technology used throughout Star Trek, such as the transporters and the warp drive. This work resulted in a Technical Manual that was distributed to prospective script-writers along with the series bible. The manual was later published in revised and updated form as the Star Trek: The Next Generation: Technical Manual by Pocket Books. Michael then went on to write a number of Star Trek books with his wife Denise.

Michael continued working at Paramount Studios on the Star Trek series that followed The Next Generation, until the cancellation of Star Trek: Enterprise in 2005. He also worked on the Star Trek movies that were produced while the television series were in production.

Michael remains involved creatively with the Star Trek franchise and is currently an acting consultant for Perpetual Entertainment in their development of MMOG, Star Trek Online.

helen
November 28th, 2005, 09:29 PM
synopsis: when using bigger engines use more wadding? i had 4 sheets in there.
How much wadding to use is dependent on the width of the body tube. For the Estes BT-50 tube is 3 sheets, BT-55 is 4 or 5 sheets, BT-60 is 6 sheets and BT-80 is 13 sheets.

speedtek
November 28th, 2005, 09:46 PM
I notice if I use 3 sheets on a A8-3 the shock cord is fine. With a C6-7 it burns the shock cord on 3 sheets. so I increased it to 5 sheets packed tight and no burn, this is on the Estes Bandit HBT-1090 (slightly larger than a BT-55)

I remember when wadding looked like cotton balls. I even tried cotton balls soaked in some solution, It was no solution, it was FLAMING BALLS at Kapiolani Park. :p

When did they restrict rocket Launching at Kapiolani Park? I remember back in the early 70's the soccer guys use to complain about us. But then we told the director of parks at the time that they use up the all the space everywhere from dawn to dusk. He agreed and told them to "stuff it". We were only there from 7:30am till noon.

So is there a club left on Oahu?

helen
November 28th, 2005, 10:08 PM
I notice if I use 3 sheets on a A8-3 the shock cord is fine. With a C6-7 it burns the shock cord on 3 sheets. so I increased it to 5 sheets packed tight and no burn, this is on the Estes Bandit HBT-1090 (slightly larger than a BT-55)

I remember when wadding looked like cotton balls. I even tried cotton balls soaked in some solution, It was no solution, it was FLAMING BALLS at Kapiolani Park. :p
Centuri used treated cotton balls, Estes still uses treated toilet paper. Quest in the past used pre-cut sheets I don't know about now.


When did they restrict rocket Launching at Kapiolani Park? I remember back in the early 70's the soccer guys use to complain about us. But then we told the director of parks at the time that they use up the all the space everywhere from dawn to dusk. He agreed and told them to "stuff it". We were only there from 7:30am till noon.
Oh about 1999 or so. I know around that time they stop issuing permits but they never changed the signs. Does it say now that model rocketry is not permitted at the park?


So is there a club left on Oahu?

Sort of. It's called Sky Performance Rocket Club of Hawaii. Been inactive for the last year and half. Had a launch a couple of weeks ago and the next one is scheduled for Saturday December 17, 2005 at Windward Community College from 3:30 pm to 5:00 pm. There is a field next to the WCC main admin building.

speedtek
November 28th, 2005, 10:38 PM
Only on the web site it lists places you can launch.

Kaimuki is also on the list but when I went there, there was a sign posted that said NO Rocket Launching or Model Airplanes, but funny it is just stickers put on crooked. someone told me one of the politicians live around there and he did it himself. I asked my friend who works at the Dept of P & R and he said they have no changes on that park. But you know how it is. If it is on the sign the Police don't care.

Of course you can lauch on any LARGE property with permission and not violating any FAA NO or LOW fly zones.

SYNOPSIS:

CITY AND COUNTY OF HONOLULU
DEPARTMENT OF PARKS AND RECREATION

MODEL ROCKET LAUNCHING AREAS:

DISTRICT I - Hawaii Kai to Manoa/McCully/Waikiki
District 1 Office - 2015 Kapiolani Boulevard - 973-7250
1. Sandy Beach Park - 8800 Kalanianaole Hwy. - 395-2211

DISTRICT II - Makiki to Aiea
District 2 Office - 1527 Keeaumoku Street - 522-7070
1. Booth District Park - 2341 Kanealii Avenue - 522-7040
2. Halawa District Park - 99-795 Iwaiwa Street - 483-7852
3. Kamehameha Community Park - 1400 Kalihi Street - 832-7819

DISTRICT III - Pearl City to Waianae to Wahiawa
District 3 Office - 94-230 Paiwa Street - 675-7130
1. Neal S. Blaisdell Beach Park - 98-319 Kamehameha Highway
2. Waipahu District Park - 94-230 Paiwa Street - 677-4733

DISTRICT IV - Mokuleia to Makapuu
District 4 Office - 45-660 Keaahala Road - 233-7300
1. Maunawili Neighborhood Park - 1489 Ulupii Street - 259-8926

Pretender
November 28th, 2005, 10:57 PM
I was the biggest guy there. always carried my rockets in grocery bags and a large craftsman tool box. My rockets were the ugliest for the group. hehehe. I made a lot of home mades which were always going everywhere.


Wait, didn't we ALL carry our stuff in grocery bags? :D I also used a tackle box for the small stuff. Spent most of my allowance through Estes during that time. Biggest guy? Only image that comes to mind right now is the Bishops. As I recall the only guy that would make F engine flights on a regular basis.

speedtek
November 30th, 2005, 06:13 AM
Wait, didn't we ALL carry our stuff in grocery bags? :D I also used a tackle box for the small stuff. Spent most of my allowance through Estes during that time. Biggest guy? Only image that comes to mind right now is the Bishops. As I recall the only guy that would make F engine flights on a regular basis.

nope I was a A8-3 and C6-7 and D12-7 Fiend, nothing in between. Since I was using grocery bag storage method, I always had broken parts at the launches so I would spend time fixing them with my 1 minute epoxy. (no super glue invented yet!

na alii
December 2nd, 2005, 03:56 PM
One of things that I do as a hobby is build and fly model rockets. I will admit by building skills is not as good as my flying skill but my rockets do fly safely. It's been a long while since I have flown but I do have photos (http://www.hawaiistories.com/gallery/album61) of some of the launches at the HawaiiStories Gallery. As well as some photos (http://www.hawaiistories.com/gallery/album01) taken from the vantage point of a model rocket in flight.
That brings back memories for me. All this talk about Estes but we also flew Centuri rockets. We used to buy rockets from a vendor at the Kam Drive-In Swap Meet during the early 70s. I even took a science course in high school at Aiea High School called "Rocketry". Anyone flew 1/2 A .049 Cox gas engine control line airplanes? We used to fly them at Blaisdell Park aka Pearl Harbor Park.

helen
December 2nd, 2005, 04:43 PM
I replied to your question about flying model airplanes in this thread (http://www.hawaiithreads.com/showthread.php?t=7168). If anyone wants to bring up old memories or new experiences about the other model related hobbies like cars, boats or even the static plastic models I would suggest creating another thread in The Workshop (http://www.hawaiithreads.com/forumdisplay.php?f=64) forum.

speedtek
December 3rd, 2005, 05:26 AM
I will be turning Halawa park into Cape Canavaral on Sunday 12/4 @ Noon (IF IT DOESN'T RAIN! uh HARD... aka scrub). Back parking lot. bringing my boring rockets, not the fun ones.

see you there.
pray for little wind.
BYOR

speedtek
December 9th, 2005, 07:38 PM
Well we lost 2 rockets being stupid by changing the angle after a few hours of successful recoveries. Then the rain came down. (they went into the trees)

I guess we will be there this Sunday the 11th again but at 11am. We got some "D" engine rockets ready so we will try that. We recovered 4 C engine launches there and lost 1 because the rocket went sideways! (ala missle!) It was a 30 year old engine it took off then stopped then went again! how weird.

So who do we contact for the rocket club?

TOO BAD CRAIG YOURE NOT HERE......

cezanne
December 9th, 2005, 08:45 PM
I notice if I use 3 sheets on a A8-3 the shock cord is fine. With a C6-7 it burns the shock cord on 3 sheets. so I increased it to 5 sheets packed tight and no burn, this is on the Estes Bandit HBT-1090 (slightly larger than a BT-55)

I remember when wadding looked like cotton balls. I even tried cotton balls soaked in some solution, It was no solution, it was FLAMING BALLS at Kapiolani Park. :p



Wasn't there a waddingless baffle-system? I think it was something whereas the ejection charge would go through a series of baffles with holes in them... I don't know how it could dissipate heat fast enough not to melt the parachute though.

I guess it wasn't such a great idea since this was in the 70's and you all are still talking about wadding 30 years later.

helen
December 9th, 2005, 09:24 PM
Centuri had the baffle system, but it only worked if the rocket body tube was a BT-60 or wider which was at least 1.6 inches in diameter. I don't know why Estes didn't pick up on the idea. Maybe they figured that the sales of wadding would decrease.

cezanne
December 11th, 2005, 08:48 AM
Sort of. It's called Sky Performance Rocket Club of Hawaii. Been inactive for the last year and half. Had a launch a couple of weeks ago and the next one is scheduled for Saturday December 17, 2005 at Windward Community College from 3:30 pm to 5:00 pm. There is a field next to the WCC main admin building.

I think I'll check this out.

helen
December 11th, 2005, 09:29 AM
the next one is scheduled for Saturday December 17, 2005 at Windward Community College from 3:30 pm to 5:00 pm. There is a field next to the WCC main admin building.
My mistake on the starting time, it starts at 2:30 pm not 3:30 pm.

speedtek
December 12th, 2005, 06:54 PM
Yesterday was fun. We got there at 1pm. Sun right in our faces. Shot some small rockets to judge the wind. I still can't figure out why those mini engines fly so high! An A3-4 went higher than our light A8-3 rockets. We also shot off a "D" engine and recovered it, but the chute failed (which was a good thing or we would have lost it!) and a fin broke away. landed 50' before the fence. I am going to have to cut out the spill hole next time around. We also shot a SR-71 Estes kit. looked so slow going up on a B6-4, recovery was good. But really I am starting to like those plastic fin estes kits. I guess I like it because if you lose them there is not so much pain thinking about how much time you spent building them. I have some other vintage rockets but I am afraid of losing them so on the shelf they stay.

http://www.geocities.com/speedexx/rockets/sr-71.jpg
Here is a pic of our SR-71 on the pad.

craigwatanabe
December 14th, 2005, 11:28 PM
Power to weight ratio is probably higher on the A engines. Remember the bottle rockets shot out of the pipe as "ahem" Kevin rode shotgun in your bug one New year's day cruzing Kahala?

Pretender
December 15th, 2005, 09:53 AM
Nice picture. Sure brings back memories. I could not see any wires, what kinda ignition setup do you use?

helen
December 15th, 2005, 10:47 AM
From the picture the person is holding a small black box which looks like the current Estes launch controllers and they also use thinner gauge wire, maybe 22 gauge, so it doesn't show in the photograph very well.

I am kind of wondering what that orange thing is by the person left elbow?

speedtek
December 15th, 2005, 01:58 PM
The orange thing is a streamer that is attached to the launch rod protector/key. It tells us which way/how strong the wind is blowing when it is on the L rod. It is old school compared to the wind sock. Plus it alerts people something is there. Yes the controller is the one with the thin wires.

Are we free to launch at the meeting on saturday? or just bring our own equipment? or is it closed to us Re-Newbies/BARS/REBARS/FUBARS?
I can't wait to watch others launch thier rockets.

helen
December 15th, 2005, 02:46 PM
The launch is free, bringing your own launch pad and controller is optional.

Pretender
December 16th, 2005, 09:06 AM
From the picture the person is holding a small black box which looks like the current Estes launch controllers and they also use thinner gauge wire, maybe 22 gauge, so it doesn't show in the photograph very well.



Thanks Helen. My point of reference is 1970's technology. :o

Hey Speed, remember the launch console used at Honorocs events? It could control 7+ launch points on that converted saw horse like launch pad and had a vehicle-like safety key Mike Okuda or Mike Lim would always carry the key around their necks.

speedtek
December 16th, 2005, 01:50 PM
yes I remember that.....

the problem with the sawhorse is that it was setup only to go straight up, no angles so into the ocean many of the high flyers went. I wish they had LEDs back then for night launches.....heavy batteries didn't cut it. I remember everyone who launched on that horse with a Cameroc all lost it and it broke!

cezanne
December 17th, 2005, 09:13 AM
My mistake on the starting time, it starts at 2:30 pm not 3:30 pm.

Is anyone else going? That field at WCC looks awfully small. I would think the district park right down the road would be a better place.

I'll check it out for a little bit... then Broncos/Bills game at 3:30. :)

Anyone know of any plans available for a rocket propelled RC glider/plane? Whereas it would be rocketed to altitude and radio controlled back? I still have my RC plane stuff and thought that that would be a cool project.

speedtek
December 18th, 2005, 05:43 AM
Launching at WCC was fun. It is challanging because the wind changes direction all the time. Lost one. Rocket meets are good because you get to see a lot of different things and pick up a few pointers. There was a bonus yesterday watching HFD get a expensive Video rocket out of the tree!

helen
December 18th, 2005, 09:44 AM
1) Estes has been selling one or two kinds of R/C rocket gliders for the last ten years and about two or three weeks ago I noticed that Hobby Company at Pearlridge Shopping Center had one box available for sale.

2) One of the club members works for Windward Community College and was able to get permission to use that field every 3rd Saturday of the month from 2:30 pm to 5:00 pm. Granted it's not the biggest field on the island but it is suitable for 1/2A to C engines and low atltitude D or E engine flights.

speedtek
December 18th, 2005, 02:16 PM
Halawa report for 12/18/05:

Conditions were very windy and overcast. Time was 12:30. Launched a few rockets on streamer recovery only and were able to recover them ok. We did lose one because it the wadding was packed too tight and don't know where it went. It is some lawn dart stuck somewhere.

cezanne
December 18th, 2005, 08:21 PM
So who was who out there? I came for a little bit and watched from the table area under the banyan tree up top. I recognized the black star-trekky looking rocket from the pics in this thread. It was pretty cool to watch and it rekindled some great memories.

The Estes site has some good reads regarding rocket boosted glider design. Searching around I found another interesting read with pics and videos:
http://www.rcuniverse.com/forum/m_1391735/anchors_1391735/mpage_1/key_rocket%252Cplane%252Cplans/anchor/tm.htm#1391735

helen
December 18th, 2005, 10:58 PM
I didn't show up until the 3:30-3:45 pm time frame. Did get to meet speedtek.

speedtek
December 19th, 2005, 04:43 PM
I went home and built some UFOs as one of the guys had suggested. I made these so they can fly 18 and 24mm motors and can be staged. Great for windy days!

http://www.geocities.com/speedexx/rockets/UFON.JPG

I also made templates if anyone wants one.

Pretender
December 19th, 2005, 07:30 PM
I would guess that the arrows denote possible flight paths. :eek:

speedtek
December 19th, 2005, 07:37 PM
amazingly saucers fly very straight. not fast due to the resistance (lack of aerodynamics going straight up) and when they come down.... bowl side up and basically straight down.

I hope someone has some inexpensive D12-0 engines that I could buy or trade? (don't like the retail price! I am cheap OK?)

speedtek
December 25th, 2005, 12:44 AM
Helen could you please post the rules for the 1/4A rocket contest? and when it will be. Thank you.

speedtek
December 30th, 2005, 04:58 PM
We will be at Halawa Park launching some rockets at 11:00am to 1:30pm. Backside parking lot. New Years Day '06. If anyone is interested stop by.

speedtek
January 1st, 2006, 11:41 AM
We will be at Halawa Park launching some rockets at 11:00am to 1:30pm. Backside parking lot. New Years Day '06. If anyone is interested stop by.

Cancelled due to the rain.

helen
January 5th, 2006, 11:08 PM
Helen could you please post the rules for the 1/4A rocket contest? and when it will be. Thank you.

Here it is. It's from the December 2005 newsletter:


On the 21st of January 2006, the Sky Performance Rocket Club of Hawaii invites you to come out and fly with us at Windward Community College at 2:30 pm (weather permitting).

On this day we will have a friendly contest. It will be an altitude event utilizing the 1/4A3-3T engines. The highest flight wins. The motor has to be recovered either with the vehicle or separately. The vehicle must be returned to the judge without damage along with the motor for inspection and judging. The vehicle must not be caught or cushioned before touchdown.

Now keep in mind that a 3 second delay is a very long time to coast to apogee for a 1/4A3 motor.

Build light, build sleek and keep thinking slippery smooth flights.

Motors and igniters shall be supplied. Prizes shall be awarded. Letís have some fun. If the meet gets rained out, we will postpone the contest until the following month.

pzarquon
January 6th, 2006, 05:55 AM
The highest flight wins. The motor has to be recovered either with the vehicle or separately.Interesting. How do you determine height? I mean, if you're eyeballing, I guess it'll come down to a judge? I'd think in a pack of rockets, more than a few different ones would still basically top out at the same altitude.

And the whole part about things having to be recovered? Sounds like folks in the area better have umbrellas!

helen
January 7th, 2006, 08:11 AM
There are various methods to determine the altitude of a model rocket, some of them involve visually tracking the flight. This link (http://www.dars.org/jimz/manuals/tr-3.pdf) will take you to a PDF of a report that was written in the 1960's that explains the theory. As far as what you need to do this is a device that can measure angles, a tape measure (http://www.hawaiithreads.com/showpost.php?p=52409&postcount=6), means to communicate (http://www.hawaiithreads.com/showthread.php?t=7291) between the launch pad and the tracking station and a calculator that has the needed trig functions (tangent, sine and cosine).

You use the tape measure to measure the distance between the launch pad and the tracking station, this will be the baseline. The device that measures the angle is at the tracking station. When the rocket is at the launch pad you set the angle measuring device at zero. When the rocket is launched you follow the flight with the angle measuring device and at the highest point in the flight you lock in the angle. Once you know the angle you can use this formula to determine the altitude:

altitude = baseline * tangent(angle)

(note: the * means multiply) As an example if your baseline is 60 feet and you measured an angle of 50 degrees, it will be:

altitude = 60 * tangent(50)
altitude = 60 * 1.192
altitude = 71.52 feet (or you could round it to 72 feet).

helen
January 14th, 2006, 11:15 AM
Update about the contest from the Jan. 2006 newsletter.


To anybody that wants to enter this contest, please come out and participate even if you arenít a member.

The contest is on Saturday, January 21, 2006, starts at 2:30 pm and will run to about 3:30 pm.

This is not a NAR sanctioned event. No NAR contest points will be awarded.

It will be an altitude event utilizing the 1/4A3-3T engines. The highest flight wins. The vehicle must be returned to the judge without damage along with the motor for inspection and judging. The vehicle must not be caught or cushioned before touchdown.

First motor is free (which will be a 1/4A3-3T). Any flight after that is up to you. However the motor has to be inspected before the flight.

The inspected motor and the rocket need to be returned to the contest coordinator for inspection after each flight for the flight to be valid.

No entry shall eject the motor in flight in such a manner that the spent motor casing falls freely apart from the model.

If the contestantís rocket cannot be seen from the tracking station while on the launch pad, it may be substituted for another rocket.

Tips for the contest:
Visibility of a small rocket during flight is very difficult. A longer or wider rocket may have an advantage in being seen, as opposed to a small rocket that may go higher but canít be seen.

speedtek
January 15th, 2006, 08:37 PM
YEAH! my kid is ready! cant wait.....rain go away. Now I gotta make one.

speedtek
January 22nd, 2006, 11:05 AM
Yesterday was a lot of fun. Thank you. How about a Rocket Drag Race next time using B6-4 motors? I can donate the motors. B6-4 or C6-5.

Would it be a format where it would have to take off and reach the ground
in the least amount of time? or Highest wins but recovery a must?

I think I will start making a Digital Altitrack..... been wanting to do it for years
but never had a reason!

Pretender
February 5th, 2006, 10:45 AM
1) Estes has been selling one or two kinds of R/C rocket gliders for the last ten years and about two or three weeks ago I noticed that Hobby Company at Pearlridge Shopping Center had one box available for sale.


Been thinking about getting back into the game with my son. I downloaded the Estes catalog and have been reviewing the current models for a few days now. Bessides the Hobby Company, what other vendors do you all buy from locally?

helen
February 5th, 2006, 11:07 AM
Hobbietat on 1413 10th Avenue, Weller's Hobbycraft at 767 Kailua Rd (I never been there but one of the people I fly with has been there a few times, I don't know about latey) and Hobby Korner at 1700 South King Street (I stopped there yesterday, they don't have much in the way of rockets but they have only been around for 4 months).

Pretender
February 5th, 2006, 11:55 AM
Hobbietat on 1413 10th Avenue, Weller's Hobbycraft at 767 Kailua Rd (I never been there but one of the people I fly with has been there a few times, I don't know about latey) and Hobby Korner at 1700 South King Street (I stopped there yesterday, they don't have much in the way of rockets but they have only been around for 4 months).

Thanks for the info!

speedtek
February 6th, 2006, 08:32 AM
I have a bunch of stuff for sale, A lot of the stuff is great for getting back into launching. Also we launch every Sunday at 12:00pm at Halawa Park. We have been getting a few people come out and let the neighborhood kids launch also. (send me a PM if interested)

Also the rocket club meets every 3rd Saturday at Windward Community College. (plug for Helen)

Da Rolling Eye
February 22nd, 2006, 03:11 PM
Hoi, Helen. Was just wondering. As an organized club/activity, is it possible to get permission to use some space for rocket launches on military installations like Schofield or Wheeler? They have lots of open fields and parade grounds, many of which are not used on weekends. Just gotta watch out for the low flying helicopters. ;) I know there are lots of military families always looking for family activities. Why not introduce rocketry? Just a thought. :)

speedtek
March 27th, 2006, 07:10 AM
This rain really puts a damper on this hobby. The only good thing is you can catch up on rebuilding the fleet. 2 weeks of no launching is getting extremely boring.

helen
March 27th, 2006, 10:09 AM
March has been a strange month this year, normally this time of the year we would get winds over 15 mph but instead we got a lot of rain and no wind.

Da Rolling Eye
March 27th, 2006, 11:38 AM
Yeah! Haven't been able to get out at all between being sick and the weather. My daughter is thinking about something different to get into, now. Probably hula lessons. :confused:

speedtek
April 1st, 2006, 11:06 PM
HOPEFULLY WE CAN GO TO HALAWA 4/2/06 at 12 NOON to do some launching. 3 week ends since we went last because of the rain. you might say that we are all "trigger happy" right now!

kilikopela
April 7th, 2006, 01:04 AM
I made a model rocket for physics in highschool. my neighbor at the time was into rockets as well and gave me the biggest baddest rocket he had...I forgot what it was, but it was mighty long. We launched it at Kapiolani park, the trades were in full crank. The launch pads were angled pretty extreme to combat the force of the winds. I cut holes in my chute to make sure it lands nearby. well...it was my turn up...got the rocket mounted and the straw thingy broke off the body. I quick fixed it with some scotch tape and on we go again. 3 - 2 - 1, GO...the trades helped it shoot straight up, then the chute came out. The trades up there were STRONG and started to carry the rocket out to sea. I started running after it...hoping it will just land already, as I closed into the shoreline...no hope to be found and it was gone. SUCKS!! well...at least I had best of show, if that's of any worth.

helen
May 26th, 2006, 09:12 PM
If anyone is planning on going to launch at Windward Community College on Saturday May 27, 2006 (tomorrow), there is a slight change in location or time.

The usual field that we use will become available after 5:00 pm and I guess it will last to about 7:00 pm (it's summer). We might launch somewhere else at Windward CC between the 2:30 pm to 5:00 pm time frame. If we do then it will be limited to really low power engines (1/2A to A).

If you want more information please PM me.

Kings House
June 16th, 2006, 03:48 AM
When my son was a young boy, he and his friends would get those rocket engines (Estes, I think was the brand name), chop them up and make bombs.

He got in BIG trouble.

helen
December 19th, 2008, 12:55 PM
Was going thru the Estes (http://www.estesrockets.com/) web site today and I noticed an option called Classic Series (http://www.estesrockets.com/classicflyer.pdf). It is a 9 page PDF document that describes 17 model rockets kits to be released during Spring 2009. These kits were originally desgined during the 1970's and 1980's and were originally sold by Estes and Centuri.

It also list an additional 25 rocket kits that are planned to be released in the Summer of 2009.

helen
August 4th, 2009, 04:04 PM
Launched a LOC/Precision Caliber ISP (http://shop.rocketsbymelissa.com/product.sc?productId=131&categoryId=14) rocket this past Sunday.

Da Rolling Eye
August 13th, 2009, 08:04 PM
Kewl, Helen. I have yet to take my daughter out for a rocketry outing. We finally picked up a few inexpensive rocket kits and finally found a launcher on Craigs. Now I'm shocked at how the prices of the motors have gone up. :confused:

Can you recommend a place that has good prices for the motors? Do you make your own?

helen
August 13th, 2009, 08:34 PM
There is a launch this Saturday at Windward Community College from 2:30 pm to 5:00 pm. As far as getting the engines locally you can try Hobbietat, Wellers and Hobby Company. Depending on the rockets you have get A or B engines, the field at Windward CC is not that big.

Also model rocketry is not about making your own engines.

helen
August 16th, 2009, 10:31 AM
Photos from the August 15 (http://www.flickr.com/photos/helen_rapozo/sets/72157621932019893/) launch (via Flickr).

Da Rolling Eye
August 18th, 2009, 07:01 AM
Aiya! Sorry we missed it, again. Didn't check back till this morning. :o

Okay then, I guess you don't make your own. :D
Actually, I was thinking more of the expensive ones that can be reused, but I'm guessing that the components for the fuel is hard to come by locally. Oh well. I'll be checking around the places you mentioned. I already picked up a pack from Hobbietat, but I know I'm going to need more. ;)

helen
August 18th, 2009, 08:39 AM
More than likey you are referring to reloadable motors. Even in that case you don't mix any chemicals, you just use the pre-made propellant chucks (otherwise known as grains) that you buy from motor manufacter into the reloadable motor.

While it can be argued that the reloadable motors has a cheaper cost per flight than a single use motor, you will need to up front the cost of the motor casing and time needed to prepare the motor for flight and to clean the motor after the flight.

craigwatanabe
August 18th, 2009, 08:43 AM
More than likey you are referring to reloadable motors. Even in that case you don't mix any chemicals, you just use the pre-made propellant chucks (otherwise known as grains) that you buy from motor manufacter into the reloadable motor.

While it can be argued that the reloadable motors has a cheaper cost per flight than a single use motor, you will need to up front the cost of the motor casing and time needed to prepare the motor for flight and to clean the motor after the flight.

Do you need a permit or a license to operate rockets equipped with reloadable motors? Sounds like these buggahs can go pretty high.

helen
August 18th, 2009, 09:01 AM
For the concept of using reloadable motors itself no, but there is an issue of being certified (http://www.nar.org/hpcert/NARhprintro.html) to fly rockets powered by H motors or higher.

helen
December 21st, 2009, 05:33 PM
How do you determine height?

Some rockets can carry an altimeter (http://www.flickr.com/photos/helen_rapozo/4199817454/). It is a battery powered device that measures the air pressure. It needs to measure the air pressure on the ground first, then it's placed in the rocket, as it goes up the air pressure decreases. After it stops decreasing the altimeter will then compare the air pressure levels between the ground and the lowest air pressure to get the height.

helen
August 22nd, 2010, 12:15 PM
Picked up a small camera (http://www.flickr.com/photos/helen_rapozo/4896582720/in/set-72157624546913298/) from the Brookstone store at Ward Centre around a month ago. It is small and light enough to fit inside a model rocket so yesterday I launched it a few times.

This video is from the ground (http://www.youtube.com/watch?v=NVj2i906Iwg) while this one is from inside the rocket (http://www.youtube.com/watch?v=HVs77G3_ZDE).

Nobunaga
October 8th, 2010, 08:30 AM
When I was a Cubmaster in the 1980's and early 1990's, we built and launched model rockets. I made my own remote ignition device, and I let each cub actuate the ignition. Some of them went as high as 1000 feet. They are a lot of fun.

speedtek
February 4th, 2014, 01:07 AM
Thanks Helen. My point of reference is 1970's technology. :o

Hey Speed, remember the launch console used at Honorocs events? It could control 7+ launch points on that converted saw horse like launch pad and had a vehicle-like safety key Mike Okuda or Mike Lim would always carry the key around their necks.

Yes I remember that Launch pad and how they controlled THE KEY! Got back into building again. Also bought some parts to build a control box.

I just talked to Mike Okuda. I asked him to find the old logo and some pics. He dont remember where he put them. I know someone here had the old logo. Post it up if you have it.

helen
August 22nd, 2021, 02:21 PM
Launched some rockets at Windward Community College on Saturday August 21, 2021. Did four flights. One of the flights I did was a LOC/Precision Graduator (https://locprecision.com/collections/rockets-2-63-diameter/products/graduator) rocket carrying a Jolly Logic Altimeter One (https://jollylogic.com/products/altimeterone/) using a Quest E26-4W motor which lofted the rocket to 243 feet and then it was recovered by 21 inch nylon parachute.

helen
August 22nd, 2021, 05:11 PM
Video of the LOC/Precision Graduator's flight via YouTube (https://www.youtube.com/watch?v=zjqeCWi4HhY).