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2walla · 10-18-2009, 09:58 PM

I have a stock g62 w/spring starter on mine now. It has plenty of power and would be fine for floats. The cub has so much wing that it will fly at a very low throttle setting. The plane is plenty strong for positive manuvers. The wing attaches with two 8/32 bolts each side that you have to insert from inside the fuse thru the door opening. The bolts provide all of the shear strength and the clamping that hold the wing on. It can be a bear to handle to get the two bolts started and the struts aligned if you don't have a good helper. The weakness is that to retain the scale looks, the only structure holding the top of the fuse from spreading is a buttjoint with a 1/4x 2" piece of basswood that crosses just in front of the window on top the fuse. If you load the plane up with positive G's that small butt joint will pop leaving only the covering holding the loads. I am thinking that a wing tube setup would be better as it would pass the loads better thru the fuse to the other wing. I have looked at several other BUSA Cubs that have had the upper fuse modified.
I would also move the lower wing strut attachment point away from the stock location 1/4 to 1/2 inch aft as it can be hard to get the bolts that hold the strus on started- if you go from the top down you mark up the side of the fuse and if you go from the bottom the gear can interfere. It is a very scale looking plane and does fly really well.
I am thinking of tearing mine down this winter, clipping the wing and putting on an a bit more power. Can't bring myself to spring for a Hempel.

10-18-2009, 09:58 PM	#5
2walla Bad-ass Super Contributer! Join Date: Apr 2007 Location: Walla Walla Wa Posts: 1,162	Re: 1/3 scale Balsa USA Piper Super Cub. I have a stock g62 w/spring starter on mine now. It has plenty of power and would be fine for floats. The cub has so much wing that it will fly at a very low throttle setting. The plane is plenty strong for positive manuvers. The wing attaches with two 8/32 bolts each side that you have to insert from inside the fuse thru the door opening. The bolts provide all of the shear strength and the clamping that hold the wing on. It can be a bear to handle to get the two bolts started and the struts aligned if you don't have a good helper. The weakness is that to retain the scale looks, the only structure holding the top of the fuse from spreading is a buttjoint with a 1/4x 2" piece of basswood that crosses just in front of the window on top the fuse. If you load the plane up with positive G's that small butt joint will pop leaving only the covering holding the loads. I am thinking that a wing tube setup would be better as it would pass the loads better thru the fuse to the other wing. I have looked at several other BUSA Cubs that have had the upper fuse modified. I would also move the lower wing strut attachment point away from the stock location 1/4 to 1/2 inch aft as it can be hard to get the bolts that hold the strus on started- if you go from the top down you mark up the side of the fuse and if you go from the bottom the gear can interfere. It is a very scale looking plane and does fly really well. I am thinking of tearing mine down this winter, clipping the wing and putting on an a bit more power. Can't bring myself to spring for a Hempel.