Topic: Maybe: Mismatched Speedo and hub? Cb750k…

[alacrity]

Continuing saga of p.i.t.a. basket I acquired in a pile of boxes.
Some of the parts turned out to be from other models… most are good and correct mid70s k5-friendly.

Question about this one: the flats on the hub seem to have no functional use with the speedo drive receiver I have.

Is there a different one that makes use of the flats?

[bryanj]

Yes, the very early 750

[alacrity]

Yeah darn it.  I think I answered my own question…
:-(

So in addition to the Speedo drive I need the “gear box retainer” in this shape as per item 3 on the blow up.

[Don R]

Someone with an early rim would probably be happy to trade.

[754]

 The steel part you show is driven by a chromed steel cover.. and shoukd work on any hub  I think.. i have a chrome cover to sell..

[bryanj]

The new chrome cover (750 or 500) is easier to find than the early drive which is rare and easiest way to do a twin disc

[Medyo Bastos]

I have a repop of part #3 under my bed if you need one.


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[Rookster]

I think all the K hubs had the flats.  You don't need #3 in the parts diagram because you already have the correct drive.  The chrome cover #2 holds the drive you have to the hub.  It was only the very early K bikes that used the flats on the hub but they never changed the drawing. 

Scott

[754]

You can make yours look like the 3 in drawing.. but the right 2 will let  you run what you have..

[scottly]

This is what the proper #2 part looks like. Also, the K7 hub did not have flats.

[BenelliSEI]

I’ll send you the one you need if you send me that one? PM me your address. John D.