RE: which engine?
I have a carl goldberg extreme 330 airplane. I want to make it faster it recomends a .46 engine. I have a tower hobbies .46 on the plane now, would it be to much to install a tower hobbies .75. I dont think weight will be a problem because I had to add weight to the front to make it more stable. what size prop should I use? If the .75 is to big what should I do to improve the speed with the stock engine?