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Old Aug 03, 2008, 01:57 PM
Registered User
Calgary Alberta
Joined Jun 2002
277 Posts
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My EDF Launch System

I build a Launch system for my twister.
If there in No wind I sometimes have trouble.
A tricycle Launch System
This thing works GREAT . Mount the Jet on the Launch System
point down the runway and GO !!! . Note the small pin/wire
on the front to hold the jet on untill LiftOff.
VERY eaisy and Quick Build.
I call it the GLS 5000 ( Ground Launch System model 5000 )
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Old Aug 03, 2008, 07:14 PM
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USA
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neat i like
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Old Aug 04, 2008, 12:54 AM
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therealhiphop's Avatar
USA, UT, Springville
Joined Dec 2005
1,878 Posts
440GTX

Looks good! A while ago I was doing a lot of research on launch dollies, and although I did find a couple here, there aren't that many.

It really doesn't look like you need it at all. That bird should fly right out of your hands. I have an F-16 that weighs 35+ oz and I could almost launch it by hand. Although I ended up building a bungee launcher, I like your version of the dolly. Perhaps you should post more details like, does it have steering, or, how does the hook hold the jet and then release, etc. Nice work!
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Old Aug 04, 2008, 08:07 AM
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Australia, QLD, King Scrub
Joined Jun 2005
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That is ridiculously simple and so has to work. Do you use it in grass?? I'm gonna build one. Maybe my HET F20 will work as well. I would love to be free of the bungee
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Old Aug 04, 2008, 10:05 AM
Registered User
Calgary Alberta
Joined Jun 2002
277 Posts
Quote:
Originally Posted by therealhiphop
440GTX
It really doesn't look like you need it at all. That bird should fly right out of your hands. Nice work!
Thanks
You are right. The bird flys right out of my hand. But if there is No wind
and warm out, I have a little trouble reaching the elevator. There is No stearing. I fluked that it tracks straight. If not adjust the front wheel.
The rear just sits in the dolly . Note the 1/4 " sponge on the rear.
This holds it firm on the dolly . A small piece of piano wire about 3/8 "
on the front holds the plane in place. ( See picture ) I CA'd a small washer so the small hole will not get larger on the undercarrage of my jet. A soon as the nose lifts the dolly lets go and Airborne
I built it because My hand launching sucks Big Time .

Quote:
Originally Posted by twang
That is ridiculously simple and so has to work. Do you use it in grass?? I'm gonna build one. Maybe my HET F20 will work as well. I would love to be free of the bungee
I use it on a runway covered by a large Landscape tarp.
Fairly smooth. If you use it on Grass just use larger wheels.
No problems with my friends stock setup and mine with 2W and 6904.
You don't need much speed to get these into the air.

Did I say " I built it because My hand launching sucks Big Time ."

Fred..
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Last edited by 440GTX; Aug 04, 2008 at 10:19 AM.
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Old Aug 04, 2008, 09:08 PM
Checking CG is for NERDS!
Smokescreen38's Avatar
Joined Jun 2005
5,347 Posts
Very nicely done. Elegant simplicity...I love it!


Now..can you land on it?
I kid.
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Old Aug 06, 2008, 07:23 AM
WiggleWiggleWiggle
ozzi supercub's Avatar
South Australia
Joined Jan 2008
6,074 Posts
Quote:
Originally Posted by twang
That is ridiculously simple and so has to work. Do you use it in grass?? I'm gonna build one. Maybe my HET F20 will work as well. I would love to be free of the bungee
Hey Twang. Have you given the dolly a go yet? I want to build a small one for my foamies. I to suffer from "crappy hand launch syndrome"
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Old Aug 06, 2008, 05:57 PM
latinflyer
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United States, CA, Milpitas
Joined Dec 2004
747 Posts
Quote:
Originally Posted by 440GTX
Thanks
You are right. The bird flys right out of my hand. But if there is No wind
and warm out, I have a little trouble reaching the elevator. There is No stearing. I fluked that it tracks straight. If not adjust the front wheel.
The rear just sits in the dolly . Note the 1/4 " sponge on the rear.
This holds it firm on the dolly . A small piece of piano wire about 3/8 "
on the front holds the plane in place. ( See picture ) I CA'd a small washer so the small hole will not get larger on the undercarrage of my jet. A soon as the nose lifts the dolly lets go and Airborne
I built it because My hand launching sucks Big Time .



I use it on a runway covered by a large Landscape tarp.
Fairly smooth. If you use it on Grass just use larger wheels.
No problems with my friends stock setup and mine with 2W and 6904.
You don't need much speed to get these into the air.

Did I say " I built it because My hand launching sucks Big Time ."

Fred..
So have you tried on grass I want to build one but need to know for my F20 on grass.

Latinflyer.
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Old Aug 17, 2008, 02:14 AM
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Australia, QLD, King Scrub
Joined Jun 2005
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It works on grass. Sorry about the vid quality i will get more soon.

Danny
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Old Aug 17, 2008, 08:29 AM
Flying low is expensive.
pdiddyg40's Avatar
United States, CO, Boulder
Joined Jul 2008
2,398 Posts
awesome, nice design :]
-P.D.
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Old Aug 17, 2008, 09:42 AM
Registered User
Calgary Alberta
Joined Jun 2002
277 Posts
Quote:
Originally Posted by twang
It works on grass. Sorry about the vid quality i will get more soon.

Danny
Danny
Thanks for the grass test.
I will now make these in mass production
and make MILLIONS of dollars
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Old Aug 17, 2008, 06:49 PM
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Australia, QLD, King Scrub
Joined Jun 2005
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Quote:
Originally Posted by 440GTX
Danny
Thanks for the grass test.
I will now make these in mass production
and make MILLIONS of dollars


Mine is a little different, same concept though. Pix soon
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Old Aug 17, 2008, 07:33 PM
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Joined May 2006
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Quote:
Originally Posted by 440GTX
Danny
Thanks for the grass test.
I will now make these in mass production
and make MILLIONS of dollars
I am kinda surprised nobody sells these already
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Old Aug 18, 2008, 07:23 AM
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brati4's Avatar
Wichita,Ks
Joined Feb 2007
2,162 Posts
Quote:
Originally Posted by 440GTX
I build a Launch system for my twister.
If there in No wind I sometimes have trouble.
A tricycle Launch System
This thing works GREAT . Mount the Jet on the Launch System
point down the runway and GO !!! . Note the small pin/wire
on the front to hold the jet on untill LiftOff.
VERY eaisy and Quick Build.
I call it the GLS 5000 ( Ground Launch System model 5000 )
Dude, where are the plans? And can you give us a closeup of your hook system on the dolly and plane?
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Old Aug 18, 2008, 12:07 PM
jrb
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Edina, MN, USA
Joined Oct 1999
11,445 Posts
Steering is easy (w/plug in bootom or RX on dolly) and adaption to other planes; videos too: http://www.rcgroups.com/forums/showthread.php?t=705113
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