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1910 Camshaft Set Up Help


1910Hupp

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As per the previous thread we have stripped the motor down and find now that one reason for the assymetric wear in the cam gear is that on the prevous owners rebuild the camshaft was not babitted parallel to the case meaning the cam gear was not at right agles to the crank gear which has probably contributed to the problem. I need some help from the experts Edgar, David ,Ken or anyone else regards the best way to set up the camshaft when we rebabbit it -Karl

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Hard to imagine that it was bored so far off as to cause a problem....the camshaft is in a separate case that bolts to crankcase, so it seems the camshaft bearings would need to be line bored parallel to the housing mounting surface.

Too thick a gasket on that housing mounting surface could affect backlash between crank and cam gears, causing damage.

That's not much help.....good luck.

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Ah yes David but today we have also found the camshaft has a 40 thou bend in it and the camshaft /Tappet carrier mounting plate has a warped face on it. You combine all these factors and we might be quite a way out of where we should be . Or you could go the Enrico Fermi (Manhattan Project Atomic Bomb Scientist) way . He had a theory that multiple small flucuations from the norm tend to cancel each other out and can be ignored in an equation . He was famous for calculating the force of the Trinity explosion (accurately as it turned out) by ripping up a page of his notebook and seeing how far the blast wave blew the scraps of paper. But I digress - Any way its put paid to my idea of using a plaster mould to hold the camshaft in its current positon when we pour the babbit . Karl

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Ah yes, now you've introduced the Random Matrix Chaos theory into the world of the Hupmobile.

Although with the space warping you're describing, maybe we're into the theory of relativity [one of which is that relatives will always be hired for a job position before an outsider].

But we do digress.....

Sounds like you know what needs to be fixed....Ken is on a long vacation so not sure he'll chime in....anyone else?

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