Author Topic: how long is the back wheel spacer  (Read 1308 times)

Offline anita

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how long is the back wheel spacer
« on: 10.08. 2010 20:14 »
Hi,could anyone please measure the overall length of the back wheel spacer, part number 67-6066 of your A10, because the badly sawn off gas pipe which was 'fitted' on my A10 needs replacing.  Bob is offering to make me a spacer in stainless but we've been unable to find the overall length that it needs making to.

Thank you
Anita
1951 BSA A10 plunger
1967 BSA C15
2004 Enfield Classic Bullet 500CC

Offline bonny

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Re: how long is the back wheel spacer
« Reply #1 on: 11.08. 2010 00:59 »
what hub is that anita ? the cast iron one or the ariel alloy one ?

Offline dpaddock

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Re: how long is the back wheel spacer
« Reply #2 on: 11.08. 2010 02:01 »
It's a '51 plunger, Bonny.

David
David
'57 Spitfire


Offline bonny

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Re: how long is the back wheel spacer
« Reply #3 on: 11.08. 2010 02:04 »
oh sorry i can't help then , i have both the ariel and iron ones from a swingarm frame .

Offline Stu55Flash

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Re: how long is the back wheel spacer
« Reply #4 on: 11.08. 2010 09:58 »
Hi

Mine measures 29.3 long, 30.22 dia for most of the length and 38.5 for the 'flange' end for about 4mm which goes against the plunger arm. This was measured with a metric vernier caliper. This is from a 1955 A10 plunger frame with QD hub.

Hope this helps.

Stu
"Keep a distance from lady "L" drivers in cars. Some are not mechanically minded, are slow to acquire road sense, an are apt to panic..." The Pitman Book of the BSA Twins.
Golden Flash Plunger 1955, Francis Barnett Falcon 67 1954, Ferguson TEA Tractor 1951. Looking for another project!

Offline anita

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Re: how long is the back wheel spacer
« Reply #5 on: 11.08. 2010 17:11 »
Thanks Stu

just goes to show that you really need the measurements, the bit of stainless Bob had in mind won't accommodate the flange so I'll just have to wait a bit longer until he's got a suitable bit of stainless again.  I've filed away the sizes.

Anita
1951 BSA A10 plunger
1967 BSA C15
2004 Enfield Classic Bullet 500CC

Offline dpaddock

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Re: how long is the back wheel spacer
« Reply #6 on: 13.08. 2010 13:25 »
Aluminum alloy works just fine for this application, Anita.

David
David
'57 Spitfire


Offline iansoady

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Re: how long is the back wheel spacer
« Reply #7 on: 13.08. 2010 14:49 »
Personally I'd be reluctant to use aluminium alloy. The spacer will be in compression and just possibly, as it's softer than the original steel, could allow the spindle to loosen itself.

But my metallurgy was done a long time ago and I may well be wrong.
Ian.
1962 Golden Flash (arrived)
1955 Velo Viper/Venom (departed)
2004 Triumph Tiger 955i (staying)

Offline dpaddock

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Re: how long is the back wheel spacer
« Reply #8 on: 14.08. 2010 01:36 »
I made up and installed an alloy spacer nine years ago for my A10 and it's worked just fine.
I would not have recommended it otherewise.

David
David
'57 Spitfire


Offline Desburnett

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Re: how long is the back wheel spacer
« Reply #9 on: 14.08. 2010 08:30 »
There is a satisfaction in manufacturing compnents, either of the two materials will be suitable for this application and are both superior to using Gas pipe. As it has been mentioned the length depends on which hub and brake plate is fitted. Later version spacer as fitted to SW arm models are listed on ebay . Based on experince these are guarenteed not to fit. Good luck and hpoe the gas pipe holds out until you source your stainless. If you are stuck drop me a PM and i can send you a billet of SS.