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Old Mar 07, 2012, 06:55 PM
xatled99 is offline
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Build Log

yet another scratchbuilt twin boom pusher


For my second fpv plane, I've decided to go down the well-worn path of the twin boom pusher.

Parts list:

RQ7 / twin boom pusher links:
Design and stability references:
Lessons/future ideas:
  • Square CF tubing (slow stick fuselages) might have been easier to work with
  • A Multiplex Mentor wing would have been a better choice. A built-up wing would be even better.
  • I could have wrapped the CF/FG interfaces with thread and then soaked the thread in CA for additional strength.
  • Use 2.5" pvc downspout for the fuselage
Last edited by xatled99; May 05, 2012 at 03:29 PM.
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Old Mar 07, 2012, 07:26 PM
metalfred is offline
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Falling with style
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Subscribed! btw I have bought this exact same fake camera turret for my shadow. It looks good!
Old Mar 07, 2012, 09:45 PM
galaxiex is offline
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my karma ranover my dogma
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Cool!

The "twin boom pusher" seems to be a very versatile/adaptable design.
The more I mess with it... the more I like it.

Here's mine from awhile back... much smaller scale but that just shows how versatile the concept is.

https://www.rcgroups.com/forums/show...postcount=2547
Old Mar 08, 2012, 09:58 AM
IBCrazy is offline
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Engineer for Christ
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I love twon boom pushers!

Just 2 of my 6 dual boom pusher builds:

https://www.rcgroups.com/forums/show....php?t=1366238 - Minion airplane

https://www.rcgroups.com/forums/show....php?t=1348642 - Wraith airplane

They both fly great. Note the forward swept wings. This adds incredible stability.

-Alex
RCG Plus Member
Old Mar 08, 2012, 10:39 AM
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shoot, you could probably find a .40 sized trainer wing for free. have more dihedral, more lift & prob 50-100sqin more wing to carry more batts.
Old Mar 08, 2012, 11:43 AM
xatled99 is offline
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Unsurprisingly, the fake camera dome does not have the greatest optics.
Last edited by xatled99; Mar 16, 2012 at 04:00 PM.
Old Mar 08, 2012, 12:16 PM
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http://www.helmut-gerken.de/sunriser/riser1.htm

this plane is not for sale anymore

i think this plane is great for fpv

rob
Old Mar 08, 2012, 01:25 PM
rclab1 is online now
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USA: LakeGeorge, New York
I asked for some input on the 'builders section' 4 days ago- just for helpful brainstorming


Click LINK for Images.
https://www.rcgroups.com/forums/show....php?t=1607630

not mine, but I love the concept.
Old Mar 08, 2012, 03:31 PM
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The lunatic is on the grass
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Nice planes!
I've been looking at my Super Cub and thinking about chopping off the fuse right behind the TE and adding booms for a pusher set up maybe add in a front section fuselage that would screw to the firewall as the stock cowl does.
Have to do some more thinking...


Ridgewalker
Old Mar 08, 2012, 04:37 PM
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Do a Barrel Roll!
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Quote:
Originally Posted by ridgewalker View Post
Nice planes!
I've been looking at my Super Cub and thinking about chopping off the fuse right behind the TE and adding booms for a pusher set up maybe add in a front section fuselage that would screw to the firewall as the stock cowl does.
Have to do some more thinking...


Ridgewalker
I've though of that. Hardest part would be figuring out how to get that weight forward. You have a good idea there with that "nose extension". If a gopro was being used, that would really help balance it out too.

I'm starting my own twin-boom pusher soon too. I'm using an e-flite apprentice wing, 10x10mm sq carbon fiber booms, re-enforced foamboard for tail, and probably a custom fiberglass fuselage "pod".

Been busy with my tricopter though...
Old Mar 09, 2012, 07:10 PM
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The 24" square tube is 21oz.
Last edited by xatled99; Mar 16, 2012 at 03:56 PM.
Old Mar 09, 2012, 07:51 PM
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USA: LakeGeorge, New York
xatled99,

good start soo far.... I'm going to try and make this one

I want to use A-tail, but with Elevator ONLY? is that do able?

Last edited by rclab1; Jul 07, 2012 at 06:35 AM.
Old Mar 10, 2012, 08:36 AM
xatled99 is offline
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Motor's on the way. 4s 4000 looks like it'll do the job.
Old Mar 10, 2012, 06:19 PM
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I picked up some 1/4" aluminum arrow shafts to use as tailbooms. I should be able to mount them to the wing with part # 8871T31 from mcmaster carr. AUW should be around 48oz.

edit: the clamps seem too small.

edit: slow stick fuselage booms might be worth trying.
Last edited by xatled99; Mar 16, 2012 at 03:58 PM.


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