The current issue of Kitplanes has an article about engine starting problems and one point caught my eye. When connecting the big wires on either the master or starter relays you are supposed to prevent the thin nut from turning while tightening the outer attach nuts. If the inner nut turns in the process it could cause the inner contact lugs to turn thus preventing solid electrical contact. In fact Paul Dye, editor extraordinaire, admitted to having this happen which caused a hard engine starting problem.
Well, I have to admit that I didn't take the time to make a thin wrench to hold the inner nut before tightening the outer nut, but I did watch closely and couldn't see any movement there. I am sure I'm not the first one to do this. So my question begs.....is there a way to determine after the fact that I did not turn the inner contact surfaces of the relay? I am not looking for the quick "does it work" answer. (Yes it does work but how do you know it is right?). Playing devils advocate here.
Thanks for any advice!
Jim
RV9A Phase 1
Michigan
Well, I have to admit that I didn't take the time to make a thin wrench to hold the inner nut before tightening the outer nut, but I did watch closely and couldn't see any movement there. I am sure I'm not the first one to do this. So my question begs.....is there a way to determine after the fact that I did not turn the inner contact surfaces of the relay? I am not looking for the quick "does it work" answer. (Yes it does work but how do you know it is right?). Playing devils advocate here.
Thanks for any advice!
Jim
RV9A Phase 1
Michigan