Author Topic: Drive Chain Issues  (Read 443 times)

Offline hdawson

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Drive Chain Issues
« on: 09.04. 2018 12:12 »
Hi All.
What is the purpose of these attachments on my frame other than to impede my drive chain?
I would think that they should be topped with rubber or similar guides. They certainly seem to be worn in a way that
indicates much chain abrasion over the years.
After recently throwing a chain and finding it to be in appalling condition  *red*  I am in the process of purchasing a new one but am surprised by the lack of room after trying to fit a modern Regina z ring (530) which I have subsequently reserved for my modern Triumph.
Any tips?
Cheers, Hadrian.

61 BSA Super Rocket (cafe).
51 Matchless G9 Clubman.
81 Suzuki GSX 750 ES.
02 Triumph Sprint.

Online terryg

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Re: Drive Chain Issues
« Reply #1 on: 09.04. 2018 12:25 »
Do you mean the chainguard mounts on the swinging arm?
Terry
'57 'SR', '59 SR, '63 RGS

Offline PatM20

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Re: Drive Chain Issues
« Reply #2 on: 09.04. 2018 13:54 »
With half decent sprockets and chain there should be a good clearance between the top of these mounts.

I think that the top of the front mount has the least clearance.

Online muskrat

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Re: Drive Chain Issues
« Reply #3 on: 09.04. 2018 21:31 »
G'day Hadrian.
As said, chainguard brackets. If chain is adjusted correctly it won't rub.
530 X ring is what I run on the rHonda firebreather, much too heavy and power robbing for the BSA. 530 is the correct size and I only run o ring chains if dirt riding is expected.
Cheers

edit: corrected mistake.
'51 A7 plunger, '57 A7SS now A10CR,  '83 CB1100F, 88 FXST .
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Offline hdawson

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Re: Drive Chain Issues
« Reply #4 on: 10.04. 2018 11:30 »
Thanks for the feedback guys.
I thought that 530 is a bit excessive.
Do I need to change my sprockets to accept a 520?

61 BSA Super Rocket (cafe).
51 Matchless G9 Clubman.
81 Suzuki GSX 750 ES.
02 Triumph Sprint.

Online muskrat

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Re: Drive Chain Issues
« Reply #5 on: 10.04. 2018 21:16 »
Doh, double doh. 530 (5/8 x 3/8) is the correct size. I'd forgotten I converted mine to 520 twenty odd years ago.
Sorry mate. Std on HD quality chain will more than handle the massive power our bikes put out.
Cheers
'51 A7 plunger, '57 A7SS now A10CR,  '83 CB1100F, 88 FXST .
Australia
Muskys Plunger A7

Offline hdawson

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Re: Drive Chain Issues
« Reply #6 on: 10.04. 2018 22:47 »
Cheers Musky,
A friend of mine also had his sprockets modified to fit a 520 chain.
What is the advantage of doing this?

61 BSA Super Rocket (cafe).
51 Matchless G9 Clubman.
81 Suzuki GSX 750 ES.
02 Triumph Sprint.

Online Black Sheep

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Re: Drive Chain Issues
« Reply #7 on: 11.04. 2018 06:16 »
Not a lot really. A slightly lighter chain. Nortons used 520s for a long time then switched to 530s with their 650 twins. With Nortons, there's not much clearance behind the primary chaincase which is why some revert to 520s. A 530 gives a wider roller so in theory slightly slower to wear out.
2 twins, 2 singles, lots of sheep