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Re: Distributor advance - '47 H
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Posted by Bob on July 05, 2004 at 11:18:08 from (66.163.134.177):
In Reply to: Distributor advance - '47 H posted by Dave in CT on July 05, 2004 at 10:33:14:
I posted the parts view of this before. It's been a while since I've worked on one of these, and I'm still trying to figure out what you're dealing with. First of all, since the distributor only turns 1/2 engine speed, it only has to advance 1/2 as many degrees as the desired spark advance, measured at the crankshaft. It would seem that IH designed your distributor that way to limit advance movement... Maybe all the similar IH distributors are that way, or perhaps they made a model with limited advance, and that's what you have. I wonder if distributors designed for machines using tractor fuel had less centrifugal advance than distributors for gas burners? I know someone nearby that has 2 or 3 of these distributors lying around, and if I catch up with him in the next day or two, I'll look at them, and see how they're made. I'm located in north central North Dakota, where are you? I have a distributor machine that allows you to check out the advance curve versus speed. It would be interesting to spin up your distributor and see what it does, and the slot could be elongated to achieve the degrees of advance your engine requires.
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