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Old 08-06-2012 | 05:37 PM
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Maglin
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From: Wichita, KS
Default RE: Skyraider Mach 1 and FS52AR engine?

So I have to thank a new friend who happens to be an experienced pilot who managed to control a very out of wack elevator. Upon take off it was vertical and then straight down and then vertical and so on and so forth. He managed to land it off the runway in the grass and we adjusted all the flight surfaces and he was able to trim it out. I had to add a bit of down thrust to the motor as it would just start to clime on power. I have to say the four stroke is a huge win. I started with a 11x7 MAS prop and it was fast. The motor was spinning 11K RPM on the ground and not to sure how much in flight unloaded but it was screaming. My only other 11" prop was a 11x8 APC. I put that on and now was right at 9300 RPMs on the ground and it was a lot more manageable in flight with no over revving. It seemed to actually slow the plane down some probably because it is to much pitch for the motor but it was the ticket until my 11x7 and 11x6 APC props arrive.

The cheap little four stroke idles at 2600 rpms currently and every tank it got better. I've got maybe 8 tanks through it now. I think I flew it for about 20 minutes and still have just under a half tank of fuel in it. It does really well on fuel. My other buddy was so impressed with it he is going to get one. Anyways I'm very happy with it. I thought it was going to be to small and it's just right as was mentioned earlier. It also is very fast even compared to a .40 2 stroke with a 10x6 on it. If anyone reading this is considering going four stroke don't worry about the ASP FS52AR. It's perfect. On a great side note. I had almost no oil on the side of my airplane after 4 tanks through the engine. That has to be a huge bonus in my book.