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Old 12-05-2006 | 10:10 PM
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soarrich
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From: The Villages, Florida NJ
Default RE: sig large sundancer arf

I'm looking for a good platform for it, for aerobatics and aerotowing. I was seriously considering the Sig Sundancer bipe for it.

It's a good flying plane, the only vice it has is that when you give it full rudder it will do a outside barrel roll! Lots of roll coupling, but everything else is great.

What size prop? Good prop clearance?

I used what was recommended 22x10, there wasn't alot of prop clearance, but the thing I do best is land, so I never broke a prop. I'm the only one I know with a Kange WACO Bipe that didn't change or strengthen it's LG and I have a Saito 170R3 in it, never broke it's prop either. The Kange is a nice bipe also, a little shorter fuse, so it fits in my Grand Caravan assembled, the SunDancer wouldn't. The GP Aeromaster is a nice flyer also, I don't have one, but I've flown it. It flies about like the SunDancer, but almost no roll coupling. I would rate them GP Aeromaster, Kange WACO, then the SunDancer for acro flying, all very close.


What torque value on the servos (A/E/R)?

I used 4 s-5131 56oz for the ailerons, HS- 635mg ~ 90oz on the elevators, HS-645 on the rudder.


How bad did you have to hack up the cowl to get the Fuji to fit?

See pictures. I used a Bisson side muffler, the stock one would wipe out the whole stsrboard side of the cowl.


You don't have the plane anymore? Why? Was it the !QUOT!weak wing!QUOT!?

No. The lower wing snapped in half, then the top wing let go. I had grabbed the 6 minute epoxy when putting the wing joiners in rather than the 30 minute epoxy I thought I had, so I had joined the top wing, and was joining the bottom it started jelling. I quickly put some thick CA on the last half of the bottom wing joiner and slid it together. As a sailplaner I thought that's OK, I don't glue wing blades in, and it seemed strong. The top wing I never really liked. Go to the Sig site and download the manual you'll see, 16 pound airplane using 1/4 x 1 basswood wingblade []. If I where to build another it would have better wingblades, and be glued properly[:@], my bad there. My Kange uses 3/4 inch aluminum tubing for wing joiners, there not glued, I could take the wings apart like a sailplane's wing if I wanted to, (they say to glue them in though, I think).

Overall I would say:
The GP is probably the most Acrobatic of the three.
The SunDancer is the most docile of the three, and the best looking.
The Kange looses to the GP in snap maneuvers, but that's a good thing if you're aerotowing[8D], and do to the dark symmetrical color scheme which can be confusing, (it can be had in a all beige that you add trim too though).
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