1928 driveshaft diameter

Posted by rrhorton On 2019/6/28 17:05:13

Had quite a shock when my machinist told me that the components of the U-joints were hardened and he could not drill out and sleeve the trunions. Since I have an Australian parts car of same year and model I decided to see what those components looked like. Sure enough there was less slop in the trunion bearings but the shaft trunions were more worn than my originals. Looking to use the best of both to assemble one unit, I found something strange. The left hand drive shaft is one diameter from end to end but the Australian shaft is larger diameter for most of the middle and tapers to the same diameter as the US one. As such, I cannot remove the trunion bearing plate from the shaft as I can with the US model. Did the Australian car have a different year shaft and U-joint assembly or were there different diameters based on some other reason such as rear end gearing, etc. Anyone know what is going on?

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