RE: .049 gas engine needed for the Guillows F4U-4 Corsair Balsa wood Giant
John46
There are no gas engines in this size range. There are some good diesel engines available, but generally they are higher priced and take a bit more experience than a glow engine to get to run well. Not to say they are necessarily more difficult, just different - a well tuned diesel is an excellent runner and will give many hours of service.
The AP is available in glow only.