Dear Ray

Thanks for your interest in using an RCV SP series engines.

Based on your specifications the RCV90SP would be perfect for your plane.

With regard to 4-bladed propellers, we have not trialled any Zinger 4-bladed props, however we know that an APC 15.5x12 4-bladed prop works well with the RCV90SP. Wooden props are generally less efficient than glass composite propellers but we would certainly like to here how you get on.

Best regards
Laurenne