RE: AVOID THIS ENGINE AT ALL COST!!!!!
40 LA in my 6-1/4 lb (no fuel) Coroplast LC-40 (Spad) plane. No vertical, no 45 deg. climbs, but it flys. On it's 3rd year. 2 deadsticks. (my fault - top end too lean) 10x6 APC prop. No complaints about this engine.
Balsa