Thread: Discussion Mills .75cc model diesel engine
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Old May 23, 2012, 04:14 PM
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The smaller .049 Cox engines all use a 5x40 thread screw or stud for the props. I need to check and see if a 5x40 screw is about the same size as the Mills engine crankshafts I have or not. I had not thought about trying a Cox 8x4 prop to see if it fit or not.
5x40 is about 1/8 inch size.
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