Goonies

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DAllen said:
I donno why but that comment just struck me funny. :cheers:

I would forgo the 1/8" ply + fiberglass and go with a foam-core CF fins. If there is any imperfection at all in the fin alignment it will be bye-bye rocket + casing. Also, unless you get a tracker you will never find it.

-Dave
Click to expand...

Carbon fiber is waaaay beyond my abilities; even glassing is unlikely with my skill set. I'm pretty sure that the fins will stay on, though. I flew the Machnum Force to roughly Mach 1.1 and recovered it in one piece, and that was with 1/8" fins from a clementine box that were wood-glued on with nothing more than the Mark One eyeball for alignment - not a bit of epoxy except to hold the eyebolt on the nose cone. I think with decent quality wood and epoxy fillets it'll be okay.

It's probably a one-shot flight anyway - even with a tracker, recovering a 10" long rocket from 1.5 miles is a very long shot. And there is absolutely no way to fit a tracker in it. Every cubic millimeter will be occupied by motor, streamer, kevlar chute protector, and tracking powder, and the latter 3 all have to fit inside the nose cone. I'll just use a lot of tracking powder, which should produce a visible cloud, and just follow the line of sight to the puff. It worked for my 29mm machbuster, which was less than 100 feet off the line of sight thta I determined visually.
 
:clap::clap::clap: Mach7, you have some big goonies.:cheers: But what was it`s name?:2: There are 1 2 3 rockets.:) They are model space shuttles.:bangpan: They`re out in your yard I see.:gavel: How big are they?:eek:
 
The EGE said:
Carbon fiber is waaaay beyond my abilities; even glassing is unlikely with my skill set. I'm pretty sure that the fins will stay on, though. I flew the Machnum Force to roughly Mach 1.1 and recovered it in one piece, and that was with 1/8" fins from a clementine box that were wood-glued on with nothing more than the Mark One eyeball for alignment - not a bit of epoxy except to hold the eyebolt on the nose cone. I think with decent quality wood and epoxy fillets it'll be okay.

It's probably a one-shot flight anyway - even with a tracker, recovering a 10" long rocket from 1.5 miles is a very long shot. And there is absolutely no way to fit a tracker in it. Every cubic millimeter will be occupied by motor, streamer, kevlar chute protector, and tracking powder, and the latter 3 all have to fit inside the nose cone. I'll just use a lot of tracking powder, which should produce a visible cloud, and just follow the line of sight to the puff. It worked for my 29mm machbuster, which was less than 100 feet off the line of sight thta I determined visually.
Click to expand...
How Did It Work Out With Your Machnum Force Anyway?
 
The EGE said:
An update: A 38/240 case will definitely fit in the 7.5" tube of a Baby Bertha, with room for lots of tracking powder and a big streamer in the nose cone.

I'm getting a couple Baby Bertha kits soon, and one will be made into the Mach Goon. It'll get a 38mm motor mount and big 1/8" plywood fins for stability. If I learn how, I may fiberglass the whole thing.

The shock cord (1/8" kevlar) will be attached to the front of the nose cone with a blob of epoxy clay that will also serve as nose weight. The other end will be attached to the body tube just above the motor casing with a smaller blob. I'll use a 2" by 40" streamer stolen from my Comanche-3.

On an H242T, it sims to just under 7500 feet and Mach 1.4. I'll use about 10% of the original ejection charge so that I don't destroy the rocket, and lots of chalk powder for visibility. First flight will hopefully be at NERRF 6. The best part will be the looks on the RSO's face :D
Click to expand...

YAY!!! You Will Officially Go "SUPERSONIC" Good Luck Getting It back though
as with My 18mm machbuster its IS a one shot wonder:roll:
 
Machnum Force flew last August on a G78G. Sucessful flight to 4500 feet, good recovery. The Mach Goon has not flown yet.
 
Ok, finally got back to the GoonyPrize, with some Ideas on stabilization. I made large Nacelle cooling fins, and a bolt on plastic fin assembly. Finished the build, hope to test fly it next weekend. However the flight goes, it will be specatular. I am getting a reputation with our local club, about being "recovery challenged". If the flight goes as hoped, I will paint it then.*************No Flights today 5/15 Launch cancelled************ with all the rain, and tornadoes this week, and the rain today, I could probably not even get into the field!

P5091230.JPG

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Weather still won't cooperate, can't fly the GoonyPrize, so decided to go ahead and paint it.

P5191236.JPG

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Flew the GoonyPrize today, it was not pretty, unless you count funny! It strted up, and then just spun in the air, end over end. Someone got a video, and was going to post on youtube, will have to watch it when he gets it done, to see it, and try to figure out why.
 
mikeyd said:
Flew the GoonyPrize today, it was not pretty, unless you count funny! It strted up, and then just spun in the air, end over end. Someone got a video, and was going to post on youtube, will have to watch it when he gets it done, to see it, and try to figure out why.
Click to expand...

You need to get this one figured out. Its one of the best looking goons I have seen.
 
I finally built my first Goony - the Honest Goon. It tips the scales at 3.6 ounces and measures 15.25" tall.

I got the planset from Excelsior Rocketry, the Baby Bertha from Belleville Wholesale Hobby, and the nose cone parts from Balsa Machining Service. The nose cone consists of a BNC 70AJ nose cone, a piece of BT70 tube, and a TA6070 transition......

Goony0006 - Copy.jpg
 
Sorry the Enterprise is still in space dock. Do not quite have the technology to master it yet. That is what you get when you find a ship, sent back through time. I figured I had to crawl before I walked, so went back to the basics, with a piggy back design.

The Sub-Orbital Trans-Goon

subtg.jpg
 
mikeyd said:
Sorry the Enterprise is still in space dock. Do not quite have the technology to master it yet. That is what you get when you find a ship, sent back through time. I figured I had to crawl before I walked, so went back to the basics, with a piggy back design.

The Sub-Orbital Trans-Goon
Click to expand...

I jsut had to check since it was such a great design.
 
Suborbital Trans-Goon Painted, and decaled. Need to trim the brick, err Glider.

subtg2.jpg

subtg3.jpg
 
I also would like more info on these builds. It would be nice to see the size of tubes used, and the lengths of tubes.
The Goondromeda is a neat looking goony. Can we get some build info please?
 
Here are just a few of my recent goonies.

IMG_0084.jpg
.
https://i742.photobucket.com/albums/xx65/Techno_1/Model Rockets/HPIM1431.jpg
IMG_0040.jpg

IMG_0020.jpg

IMG_0089.jpg


All of my goonies come from the Baby Bertha Kit. I printed the decals using Testors decal paper.
Testors Decal Bonder was also used to diminish tearing and wrinkling.
I am currently working on adding more F104 Starfighters to my collection.
 

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