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Old Nov 08, 2012, 09:05 PM
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Quote:
Originally Posted by typicalaimster View Post
Hmm looks like they are out of stock. You guys bought up all the planes didn't you! I'd probably convert this over to a A tail vs the H tail they have going on. I'll keep an eye out for this plane and hopefully it'll come back in stock.

Sadly I'm a sucker for TBP's
their site says this
Quote:
First batches will be available from 15.11.2012
Nice looking kit.

I have thought of turning my Zephyr2 into a 'Boomer type' like this - but without a fuselage.
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Old Nov 09, 2012, 06:38 AM
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BCsaltChuck

in terms of aeroflight dynamics, what is the point of dual boom design, as opposed to regular airplane single boom with Hori/Verti tail. Is this more efficient?

I see that countries around the world prefer this twin boom pusher setup for 'drones'....

What about for us Hobbiest that prefer efficient FPV plane for long fligh times and glide factor.
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Old Nov 09, 2012, 07:35 AM
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The twin boom design breaks down into a smaller package vs your standard plane. It's a matter of portability. To me it's about looks.
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Old Nov 09, 2012, 07:41 AM
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Than there is line of thrust issue with easy star like configurations compared to twin boom.
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Old Nov 09, 2012, 08:58 AM
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hefest,

what do you mean 'easy star' like configuration? pusher type?

So, the Twin Boom is just for transport/breaking down easily?

Also,
how hard will this be to convert to "A" tail (opposite of a 'V' tail).?
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Old Nov 09, 2012, 10:41 AM
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Quote:
Originally Posted by LexusFPV View Post
hefest,

what do you mean 'easy star' like configuration? pusher type?

So, the Twin Boom is just for transport/breaking down easily?

Also,
how hard will this be to convert to "A" tail (opposite of a 'V' tail).?
Yes, I mean pusher configuration like easy star.
In such configuration thrust line is usually tilted to compensate for the off-center position of motor. With this configuration that's not the case and I see it as advantage. Also you can fit quite large prop on this one.
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Old Nov 09, 2012, 02:12 PM
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Quote:
Originally Posted by LexusFPV View Post
Also,
how hard will this be to convert to "A" tail (opposite of a 'V' tail).?
Converting to an A tail is rather easy. I'd suggest just using some balsa and whacking some tails out yourself. The material is light weight and durable. The nice part about the booms is it allows for a larger prop. I'd love to run a 11x7 on my Skywalker but the tail boom restricts the size of prop. With a TBP you're limited to the space between the boom.

The magic number for a A-Tail from what I remember is 110-120 degrees. I'll attach the spread sheet I was using when I was designing TBP's back in the day. I'd love to start designing some TBP's again.. Just don't have anyone that I know that can make cheap molds.
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Old Nov 10, 2012, 05:54 AM
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Twin boom allows for large prop / low kv motor, which always was the key of an efficient propulsion.
I would provide a foldable prop, though.
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Old Nov 10, 2012, 04:18 PM
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Damm, another to add to the list.
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Old Nov 10, 2012, 04:20 PM
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What are the specs on it?

What are the recommended motor/servo combo?
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Last edited by eroeder; Nov 12, 2012 at 01:42 AM. Reason: edit
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Old Nov 12, 2012, 01:43 AM
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I see there are two threads on this...
http://www.rcgroups.com/forums/showthread.php?t=1767087
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Old Nov 12, 2012, 06:35 AM
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eroeder, you asked whats a recommended motor/prop etc....

Someone mentioned that with pusher prop configuration,
its more efficient with "Low Kv motor, and big ass prop"
for very low cruising amps..... so it flight times will be longer:-)
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Old Nov 12, 2012, 09:39 AM
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Skyhunter recommended setup

Quote:
Originally Posted by eroeder View Post
What are the specs on it?

What are the recommended motor/servo combo?
T-Motor AS2820(3542) KV920 motor
11x7 or 12x6 APC propeller
T-Motor 60A ESC
8-15g metal digital servo x3
4S 14.8V 5000-25000mah li-po battery


Skyhunter - New 1.8m twintail FPV/UAV EPO platform Ground footage (1 min 33 sec)


Skyhunter - New 1.8m twintail FPV/UAV EPO platform Flight video (0 min 0 sec)
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Last edited by fpvmania; Nov 12, 2012 at 10:04 AM.
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Old Nov 12, 2012, 11:25 AM
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The specs say it comes with a 12mmx 10mm spar. That might be ok, depends on how the wing loads I suppose. Definitely looks like a good plane at first glance. Like I said in the other thread, it needs landing gear. Otherwise the tail might get damaged on landing. Secondly, the FPV camera needs to sit higher up, so the deck is clear for a HD camera.
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Old Nov 12, 2012, 11:40 AM
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FPVmania

Can You post vids' of this plane landing?....so it clears up that the twin booms
are strong as advertised.... also, it will show how the twin 'FOAM' vert/ horizontal stabilizers
in the rear of the plane will hold up.....

I ask because, the grass around here is too long for ROG take off, and ROG landings'....
(I don't need landing gears)....a modified 'skid' will be cool though.
Something SIMPLE!!!!
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