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Old Mar 04, 2012, 06:06 PM
USA: LakeGeorge, New York
Joined May 2010
4,840 Posts
100" Pusher Glider with Twin Booms A-tail

Glider with Pusher motor project.

How long shall the the Twin booms be compared to the wings?
Is there a certain percentage when measuring compared to wing span(ie...100").?

This plane is not mine, but I may want to re-create it with the help of someone.


I would use the main canopy and wings only on these:



Thank you.....
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Last edited by rclab1; Jul 07, 2012 at 06:35 AM.
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Old Mar 04, 2012, 08:00 PM
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HELModels's Avatar
Joined Aug 2003
2,656 Posts
I'd go with the ASW, looks like it has more room for stuff. I'd use carbon golf shafts off ebay for the booms. That's a cool idea to lop off the fuselage and add a pusher. I'd use photographs to get the decalage.

As for your question about ratios of wing span to tail moment, use the full scale as a guide. Find a 3 view of the full size, since those HK models are scale, and determine wing area/tail area ratio and length. If you shorten the tail distance, then increase the tail area. Do a search of this site for tail moment formulas and V tails, anything by Dr. Drela or Don Stockhouse is good info.
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Last edited by HELModels; Mar 05, 2012 at 01:35 AM.
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Old Mar 05, 2012, 05:22 AM
An itch?. Scratch build.
eflightray's Avatar
South Wales U.K.
Joined Mar 2003
13,795 Posts
Be very careful with large hand launched pushers.

Luckily the scars across the back of my hand have now faded
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Old Mar 06, 2012, 04:33 PM
I'm a pilot... 100 yrs to late
Thermalin's Avatar
USA, FL, Palm Harbor
Joined Jan 2005
3,506 Posts
That looks like the SR Batteries free flight e-version.. I wanted to make an RC Version.. looks like someone did it already..

For 10 bucks. .buy it and you'll have a fully fucntional prototype to scale up...

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Old Mar 06, 2012, 06:43 PM
USA: LakeGeorge, New York
Joined May 2010
4,840 Posts

Thanks for the post, but I want to make a;

1. VeryHigh performance OverPowered Glider....

2. able to Glide very well (long flightimes power 'off'),...

3. must be 'fast' (thinner wings) during the glide,

4. and over powered brushless motor just for fun (strong wings).....

thanks for the input up above:-)

I'm just throwing ideas here
This is a scratch build using another plane so my hopes are high

...again, this is for fun and experimentation and if it works out well, it would be worth it
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Last edited by rclab1; Mar 08, 2012 at 01:27 PM. Reason: info
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