im getting pretty long runtimes with the mogli. I havn't checked but it feels like 8 minutes maybe. And on 5000mah thats about 40A. Im running a x637, feigao 9L and 3s2p lipo. esc is cool lipos and motor around 90F exept for the shaft on the motor wich sometimes can be really warm. I was thinking about changing prop to a x640 or a prather 215. would it work with my setup or will I burn everything??

I think it shouldn't work but at the same time I think I should be pulling a lot more amps on my current setup.

What do you guys think??

Try a 215, check temps often!

will do that.

do the prather props need balancing and sharpening??

Yes. i believe they do

The prather ones I got needed balancing

okay..thanks.
I decided to go with a graupner prop wich is closer jump from the 637 I have now. the graupner prop is 40mm dia and 59mm pitch - this is just an icrease of the diameter(637 is 37x59.2). will this give more speed or will it just accelerate faster?