I am purchasing a GSP Hellcat.. I was trying to decide which motor to put in it. The plane weighs 10lbs, 70" WS... It calls for a 90 2C, or a 120 4C. Can I fly this on the RCV 90? I was seeing if I could get away with it, or should I get the RCV120? I want to use a 3-blade prop. Didnt know if there would be enough ground clearance with the RCV120 with a bigger 3 blade prop?

Any suggestions?

use at least rcv 120, and about ground clearance the 3 blade prop has to be smaller then the 2 blade so if itīs ok with 2 blades, it has to by ok with 3 either

RCU had a review on a GSP Corsair a while back. 75.5" WS, 12.4 lbs, and an RCV90. The reviewer was very impresses with the RCV, but as you know, reviews are always on the positive side.

I think RCV engines are perfectly suited for small and mid-size warbirds. I'm currently breaking in a RCV90 for my 1/8 TF Corsair.

As for 3-bladed props, the only one on RCV's list of recommended props is 15.75x13 3-blade... for both the 90 and 120 sizes. I read somewhere that the 120 will give you an few hundred extra RPM over the 90 with the same prop.

Juice

Here is the review of the GSP Corsair with the RCV 90SP:

http://www.rcuniverse.com/reviews.ph...ew&reviewid=68