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Nelson 40 info needed
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09-17-2009, 06:49 PM
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Ed Smith
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RE: Nelson 40 info needed
The rear exhaust engine shown in the picture is probably a Formula 1 engine. This engine was set up for use with a mini pipe, high Nitro content fuel and crankcase pressure, see the nipple.
If the intent is to use it for FAI use then the port timing in the sleeve is not correct. The ports are different from the F1 version. A full tuned pipe will be needed. The crankcase pressure should be blocked off and pipe pressure used. There will be a lot of work required to convert this engine from F1 to FAI use. Propellers for either are totally different. You have to decide which version you want.
See pictures of FAI version with pipe and position of pressure fitting
Ed S
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