ORIGINAL: RVman
I am going to pick my seawind up this weekend. I have a brand new saito 82 for it which weighs 17.6 oz. Hopefully it will be powerful enough for the plane. I also plan on getting the retracts for it.
Tom
Saito 82 scales very well with nitro, so you get over 500 rpm of boost by going from 15% to 30% nitro, with which the 82 will go head to head with OS 91 Surpass. So it's same power for 2/3 the weight, but 3/2 the fuel cost.
It will swing Graupner 12.5x7 3-blade at over 10000 rpm, which should be adequate for flying this plane around. Again, this is a heavy plane w/ high wing loading, so take-off is the main concern when it comes to power. I believe that Saito 82 on high nitro will generate more thrust than 61 FX when properly propped.