Posted by loch on August 28, 2015 at 09:11:47 from (216.169.68.188):
I have an Int'l H4 magneto that someone long ago shoehorned onto a Continental F162 (Lincoln SA200 Shorthood welder). I've overhauled the mag, new points and condenser, it is an "L" (CCW) and I timed the rotor shaft and points cam according to the service manual. The magneto sparks like crazy on the bench, and turned at high RPM's (More than 60, counting from the rotor spindle). However, at starting RPM's, which are about 60, there is no spark. Is the reason a weak coil? The impulse spring and counterweights all seem fine, and moving properly. The actual engine timing and all the other timing (governor timing, rotor timing) is correct as far as I can tell and have triple checked.
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Today's Featured Article - What Oil Should I Use? - by Francis Robinson. I keep seein this question pop up over and over again in discussion groups all over the web. As with many things there are often several right answers and a few wrong ones. Some purist I'm sure will disagree to no end with what I will tell you but most of us out here in the real world don't really care do we ? Some of them only bring their noses down out of the air long enough to look down them anyway. If you are like me you are only doing this old tractor stuff because you enjoy it. You
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