ex-treme arf

I have a Webra speed 50 on mine. Might be too much. TT46 PRO or comprable would do it. I don't know about 4 strokes. I will say the that my battery pack is mounted under the fuel tank to get CG forward enough. you might be able to put the batt in the wing if you used a 4 sroke. mk

Irvine .53 for a 2 stroke Saito .91 for a 4 stroke

either of these is what I would use.....hands down. The Saito .72 would work nicely, but the .91 is only 3/4 oz. heavier so this is my reasoning.

good luck

Brad

IMHO, oh hell yeah a YS 91 is overkill. However, send it to me(are you in Central Texas by chance?) and I'll wring it our fer ya. mk