The Raptor 90 G4 has several new and interesting design features, one of which is the all metal fan. As you can see in the photo, this is a completely different design fan than we have ever seen before. It’s hard to describe in words, other than to say it’s hollow and does not have the usual internal fins to move the air. I would imagine from its design that this new fan will move more air for better engine cooling, while using less power to operate.
Jan 16, 2012 No Comments
About the authorA regular contributor to Model Airplane News, he is also the columnist for our “Rotor Speed” helicopter column. Paul has been flying RC helicopters since the early ‘80s and now enjoys all types of rotary machines, including scale and aerobatics, and he continues to experiment with modifications to improve performance.
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