bgw45???????? Internal combustion engines have been around since the 1860’s and first used in a successful airplane flight in 1903. I miss your point. As far as modern RC airplane engines, I have several glow engines from OS and would personally be very interested in a 30cc gas engine from OS. My point is that from the picture, OS has their own design and I feel has a great reputation for quality. I do not have a problem paying for quality. I look forward to getting more information on this engine!