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Powerbike frame alignment

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Powerbike frame alignment

Post  ztis1 on Sat Feb 10, 2018 7:15 pm

I've just started the restoration of a 1940 Powerbike 50 and I have a couple of questions regarding the frame.
Can anyone tell me what the rear hub width should be? My rear stays are bent outwards on the right hand side.
The seat tube also seems to be bent but, on close inspection it appears to be several sections brazed together out of alignment. Is this usual? I don't want to spend ages trying to sort it out 'if they're all like that' and it's not really an issue.

Any help greatly appreciated.
Regards, Ian.

ztis1

Posts : 3
Join date : 2018-02-09

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Frame

Post  kerabo on Sat Feb 10, 2018 7:25 pm

If you dont get an answer I could measure my 56 if they are the same.

Have you not got the rear hub to aligh the stays. The wheel centre is going to be in line with the frame tube

Ken
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kerabo

Posts : 2217
Join date : 2008-02-11
Age : 67
Location : Falcon 87. Trials 93 Special. Powerbike 56. Falcon 81 Green Lane bitsa. Sunbeam S8. Honda Deuville.

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Powerbike frame alignment

Post  ztis1 on Sun Feb 11, 2018 9:50 am

Thanks Ken,
I have the hub but suspect it may be incomplete. I can see from the flats on the spindle roughly where it needs to be.

ztis1

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Powerbike 50

Post  FB vincent on Sun Feb 11, 2018 10:41 am

I think you will find the width across the British Hub Co/Harwil rear brake assembly is 5 3/4", but as you say, the flats in the axle must align with the frame cut outs.

The Powerbike 50 frame is completely different to the 56 frame, which is of all welded construction intended for the later Villiers 2F engine.

If you need a copy of the Powerbike 50 instruction and parts book send me a PM with your email address, and I will forward you a copy.

Sandy

FB vincent

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Powerbike 50

Post  ztis1 on Mon Feb 12, 2018 7:25 pm

Sandy,

Many thanks for the information regarding the hub.
I will PM you about the instuction manual (I have to wait 7 days as a new user)

Regards,
Ian

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