Rear Hubs Magnesium?

[Keith Meatyard]

I've seen several 73 JP's and HS's with 35mm front forks and the black magnesium front hub.  Did the factory put black magnesium rear hubs on the rear (not the conical) if they put them on the front, or did they sometimes have black magnesium on front with polished aluminum on the rear?  I know it's easy for folks to swap these forks around over the years, just wondering what Austria may have done.

Keith Meatyard

[Daniel P. McEntee]

Hi Keith;
    Yes, the rear hubs are magnesium also. I just repaired a rear hub for a '74/'75 Penton that had a bolt jammed in one of the sprocket holes. They usually have the word "magnesium" cast into it somewhere on the part, and are painted black as a corrosion protection measure. I would think the practice started with the '73 model year?
  Type at you later,
    Dan McEntee

[brian kirby]

The 35mm forks, black mag front hub and conical rear hub all showed up in '74 at the same time ('73 1/2 for the 250). All '72 and '73 175s should have the barrel cush drive rear hub and aluminum front hub and 32mm forks. The 250 only came with the conical, the cush drive barrel hub will not handle the power of the 250.

Brian

[Rain Man]

And let me throw another wrench in here, The earlier Piner/ six day had 2 diffenet size  cush hubs. All before Conical hubs.

Raymond
 Down East Pentons