Originally Posted by
NM2K
Truthfully, I would go with a Saito 1.25 were I expecting good vertical performance from a 7.5 lb model.
Ed Cregger
The 1.25 should haul an 8 pounder unlimited vertical with power to spare. I'm running an Fa-125 on this Ki-61 with an AUW of 14.5lbs on a 71'' wing and it will hold a 60* climb forever. It's running a 15x8 MAS classic composit prop using 15% cool power at 9800rpm...May need to go to a 3 blade to back it off a bit, can't really add too much more diameter due to clearance and a 10'' pitch would be unlandable. (The Graupner in the pic is just a display prop)
