Originally Posted by ajbaker
+1. I still have no idea why that is that way. I have a V1 and a V2. The V2 flies best at 62mm and the V1 flies best at 72mm. If I move the CG to 60mm on the V2 it flies so nose heavy that it literally falls out of the sky on a 90 degree bank and it flies like a tank. The only difference I can see (and measure) between the two is the distance from the front (or back, if you wish) of the servos. And that is not enough to make any huge difference. So, for aerodynamic purposes, the fuselages and wings and empennages appear identical. Yet, the CG is so different.
Even with that, on page #1, I left the recommendation at 60mm for all versions. Do you have a V2 also?
I have a V1 that I put together using many build tips on this thread. I have used 60mm CG as stated in manual and this thread. Lately I'm seeing a lot of reference to a CG of 70 or more, which I think on a V1 is behind the spar. Is this correct. Is a no power glide test a good way to determine where the actual CG should be.