Technical Drive Shaft Diameter

[Brinky]

I have 500F 1969 with drive shafts measuring 17.23 mm. This seems strange as I am led to believe that they should be thicker. Where is the diameter measured mid shaft or at the spine.

 

[Bambino]

Brinky,

My 500F was originally fitted with 19.5mm halfshafts. With the conversion to a 126 transmission, I replaced them with the later model 25.0mm shafts as fitted to the 500R and 500L.

I'm not sure exactly where the diameter is measured. If I can easily find my old shafts, I'll measure them for you.

Chris

PS: The shafts fitted to the 126 transmission are also 25.0mm in diameter but are too long for the 500 due to the 126s wider rear track.

 

[JakeF]

Same here, 17,5mm or something. Measured in center of the driveshaft. Not sure were is the right place. I'm going to drop the gearbox here someday for service check.

 

[Bambino]

17.2mm and a bit mid shaft and 19.5mm at the level of the bearing housing/oil boot.

Chris