60ch

taper angle on Chrysler product rear axles

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Does anybody know what the angle of taper the Chrysler corporation used on the rear axles of their cars?  Was the taper the same for all of the cars?

Thanks, Terry

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Taper is usually described in measurement per inch. If you measure the diameter in two places exactly 1" apart and subtract the smaller number from the larger one you'll get very close. You don't say what year your car is... the earlier they are the more likely the taper is not exact. Quite some time ago there was a thread here on a pair axles Dandy Dave made for an early Buick. The taper of the axel did not match the inside taper of the hub perfectly. The best result will come from getting the taper as close as possible and lapping the axel into the hub.

 

Or... you place a protractor on the parallel part of the axel and move the scale to the tapered part. You'd use the angle for cutting a very short taper with the compound but I've never seen an axel that didn't have a long, very shallow taper. You can also turn a taper between centers by offsetting the tailstock but that would call for a lathe with a very long bed.

Edited by JV Puleo (see edit history)

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Another way would be to measure the ID of the hub at each end and the distance between these locations, accurately of course. Then (large dia. minus small dia) divided by length between measured diameters.

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Put the axle in a lathe with a center in the tail stock. Indicate the axle taper so its running true. Indicate one inch of the taper to get the thousands per inch taper. Use simple trig to arrive at the angle in degrees. Should be dead nuts accurate.....bob

Edited by Bhigdog (see edit history)

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