Author Topic: timing belt  (Read 328 times)

Offline dave st cleer

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timing belt
« on: 02.11. 2017 18:55 »
Hi All    I need help in finding a U K  supplier  of a timing belt for my 1961 A10 Rocket it was fitted  with a V shaped belt in about 2009 by previous owner  I have tried various sauces and can only find toothed  belts  with the only option to change the pulley's  at extra unwanted cost.  Any help  would be very much appreciated. Dave

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Re: timing belt
« Reply #1 on: 02.11. 2017 19:19 »
Hi All    I need help in finding a U K  supplier  of a timing belt for my 1961 A10 Rocket it was fitted  with a V shaped belt in about 2009 by previous owner  I have tried various sauces and can only find toothed  belts  with the only option to change the pulley's  at extra unwanted cost.  Any help  would be very much appreciated. Dave

It’s not a timing belt on a BSA.  Is it a dynamo drive belt?

https://www.bearingboys.co.uk/V--Wedge-Belts-1025-c?gclid=EAIaIQobChMI2s7Fos2g1wIVz73tCh0cCQHUEAAYASAAEgI25_D_BwE

Online duTch

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Re: timing belt
« Reply #2 on: 02.11. 2017 19:20 »
 A V-belt for ignition timing doesn't sound like a real Flash idea...or a Rocket either.. You sure it's a timing belt and not the generator drive belt ?


   TT rounded me up *conf*
Started building in about 1977/8 a on average '52 A10 -built from bits 'n pieces never resto intended -maybe 'personalised'
Have a '74 850T Moto Guzzi since '92-best thing I ever bought doesn't need a kickstart 'cos it bump starts sooooooooo(mostly) easy
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Offline dave st cleer

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Re: timing belt
« Reply #3 on: 02.11. 2017 20:55 »
Thanks for that you're dead right it is the dynamo drive belt but still can't find a v shaped replacement belt  they all want to supply a replacement kit with tooth belt and pullys at £100 plus . Thanks for your help. Dave

Offline KiwiGF

  • Last had an A10 in 1976, in 2011 it was time for my 2nd one. It was the project from HELL (but I learned a lot....)
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Re: timing belt
« Reply #4 on: 02.11. 2017 21:04 »
Thanks for that you're dead right it is the dynamo drive belt but still can't find a v shaped replacement belt  they all want to supply a replacement kit with tooth belt and pullys at £100 plus . Thanks for your help. Dave

A pic might help (and the forum loves pics  *smile* )

Your belt drive might be a home made job, or an early version of a belt conversion.
New Zealand

1956 A10 Golden Flash EA7-168x, CA10 913x, left BSA together for Liverpool, 5th Dec 1955.

1949 B31 rigid “400cc hot rod” (favourite bike)

1949 C11 rigid, but why!!! (cos it was cheap)

1937 B21, missing parts so mission impossible?

1952 Armstrong Siddeley Whitley for rainy days (with wife).

GL1800 Goldwing not sure why, maybe cos it always starts

Offline chaterlea25

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Re: timing belt
« Reply #5 on: 02.11. 2017 21:52 »
Hi All,
There were a couple of different versions of the vee belt dynamo drive kits
Sean Hawker, (CMES no longer in business) was one and I think Lyford classics sold a version
You need to go to an industrial belt supplier rather than a motorcycle parts dealer

Is there a number visible on the old belt?
If not you need to identify the size (section) of the  belt needed,

http://www.gizmology.net/pulleysbelts.htm,

Then, calculate the length needed.

https://www.blocklayer.com/pulley-belt.aspx

John




1961 Super Rocket
1963 RGS (ongoing)

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Re: timing belt
« Reply #6 on: 03.11. 2017 00:12 »
Most auto shops that sell belts will have a tool to measure it with. Needs the smaller version of this.
Cheers
'51 A7 plunger, '57 A7SS now A10CR, '76 XT500, '77 AG175 '83 CB1100F, '81 CB900F project.
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