UCD
I strongly agree with falcons. I have a 91 ys on mine and its plenty... You start adding too much weight and it wont be worth a crap......The trick is to keep the wing loading D
O
W
N.
You would also take a BIG risk in over speeding the air frame and losing all your performance...My 2 or 3 cents...
this pic was taken with a os 91fx...Later equiped with the YS 91 FZ