I purchased an RCV .90SP for the TF Spit I am building. Being able to turn a 4 blade prop was the primary reason for my selection. The second reason was to maintain as much of the cowl shape as possible. The recommended 4 blade prop is the APC 15 x 12.5. If the test flights go well, I may experiment with a 4 blade Zinger 18 x 10. That would be getting close to scale in size. Now I just have to finish some other projects so I can get back to working on my Spit.

Scott