Gremlin advice
 

Put Os 46 in Gremlin for hell of it. Do ineed 1/8 reflex in elevons

Gremlin advice
 

I put a Supertigre 45 on mine for the same reason. I never changed reflex, just checked balance and trimmed in flight. Plane is VERY fast. I was running a 9x10 APC which is an awesome combination. calculated to about 125 mph.

Plane is very twitchy though, negative expo helps, especially on inverted low passes.

APC's are quite brittle though, and break on landings much more than Master Airscrews.

Give it a try, you'll have a lot of fun with it.

Gremlin advice
 

FYI, the reflex is a function of the airplane's design, not the amount of power the engine produces.

Yes
 

I am aware of that- poorly worded my question- Have no info on this plane- How much reflex is appropriate?r

Gremlin advice
 

1/8" seems like a lot, start at 1/16", as long as your balance is right (1 5/8 to 1 3/4") just trim for level flight at full throttle. It is a function of design not power but I think the faster it flys the less it would need, just a guess.