Author Topic: Mystery hub  (Read 1015 times)

Online Greybeard

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Mystery hub
« on: 13.06. 2015 14:32 »
In my box of bits I have a quick release type hub different from my '55 A10. Can you tell me what it's for?

beezermacc

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Re: Mystery hub
« Reply #1 on: 13.06. 2015 18:56 »
If the splines are the same as A10 then its from a rigid. If the splines are different its Triumph.

Online Greybeard

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Re: Mystery hub
« Reply #2 on: 13.06. 2015 20:00 »
Thanks Andrew,
The splines are different to my A10 so I guess it's a Triumph.

Online trevinoz

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Re: Mystery hub
« Reply #3 on: 14.06. 2015 00:39 »
A rigid what, Andrew?
A7/10 rigid hubs are the same as '54/5 swinging arm hubs.

Online RichardL

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Re: Mystery hub
« Reply #4 on: 14.06. 2015 04:58 »
So, definately not that.
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beezermacc

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Re: Mystery hub
« Reply #5 on: 14.06. 2015 08:27 »
I was actually thinking B31. My mate has a 1947 and it looks very similar to that, with cup and cone bearings. Apologies for the confusion. However, it turns out to be non-BSA, probably Triumph.

Online chaterlea25

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Re: Mystery hub
« Reply #6 on: 14.06. 2015 15:59 »
Hi All,
I cannot id the hub,
But I know the postwar B31's(up to 49?) and so on have a one piece hub with integral brake drum and sprocket
They have taper roller bearings

Without serious engineering facilities the sprocket on these cannot be replaced  *sad2*
So rebuilding the wheel with a new (if you can find one) hub is the only solution
What a dozy idea *problem* *problem* *problem*

John
1961 Super Rocket
1963 RGS (ongoing)

Online KiwiGF

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Re: Mystery hub
« Reply #7 on: 15.06. 2015 10:00 »
Here are some pics of a 1950 rigid b31 hub.....the bare hub in the pics has the drum riveted to the hub which was how it was done originally, the hub spoked in  to a wheel has been modified to have a bolted on drum/sprocket,  the drum is a bsa one maybe an a65.

The bare hub has a 46 tooth sprocket ring newly welded on, the original 42 tooth was machined off first, I doubt it is possibly to weld on a new 42 tooth ring sprocket as there would be hardly any strength in a ring of 42 teeth. The drum needed skimming after the welding job, as it was slightly distorted by the welding despite the best efforts of my machinest guy.

Hopefully if I ever have to renew a 46 tooth sprocket part of the ring can be left on the drum to prevent it distorting again. That was also why I did not opt for a 44 tooth ring ....which could have been used.... just about. The 46 tooth ring was made from a solid blank sprocket.

It is true new hubs are hard to find! And knackered ones tricky to refurbish.  The difficulties with renewing the sprockets might be why rigid b31s are a bit rarer?  *conf*

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Online chaterlea25

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Re: Mystery hub
« Reply #8 on: 15.06. 2015 22:09 »
HI Kiwi,
Nice mod,
As I said serious engineering required  *work* *work*

John
1961 Super Rocket
1963 RGS (ongoing)

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Re: Mystery hub
« Reply #10 on: 18.02. 2016 07:02 »
Therealolddog with a greybeard *smile* And you need to update your photo *whistle*
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Re: Mystery hub
« Reply #11 on: 18.02. 2016 09:10 »
Therealolddog with a greybeard *smile* And you need to update your photo *whistle*
Which photo Musky?

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Re: Mystery hub
« Reply #12 on: 18.02. 2016 19:37 »
Ebay
'51 A7 plunger, '57 A7SS now A10CR,  '83 CB1100F, 88 FXST .
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Muskys Plunger A7

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Re: Mystery hub
« Reply #13 on: 18.02. 2016 22:46 »
Oh yes, my beard wasn't totally gray then! That photo was taken in the London Eye