Author Topic: final drive chain  (Read 2654 times)

Offline andy

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final drive chain
« on: 30.09. 2012 17:50 »
what is the final drive chain size and what are you lot useing "plain", "o"ring, "x" ring cheers.........andy
only 2 things needed in life wd40 and duck tape....if it moves and shouldn`t use tape if it don`t move and should use wd40.

Online Billybream

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Re: final drive chain
« Reply #1 on: 30.09. 2012 20:30 »
Hi.
I also was unsure best route to go, decided to play safe and used plain chain by Regina Classic, size = 5/8 x 3/8 x 97L, cost was less than £40.00.

1960 Super Rocket, owned since 1966, back on the road 2012 after being laid up for 29yrs.

Offline muskrat

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Re: final drive chain
« Reply #2 on: 30.09. 2012 22:04 »
I use plain on the BSA's but if dirt and mud are your thing go O ring. The O and X ring chains rob a bit of power.
Cheers
'51 A7 plunger, '57 A7SS now A10CR,  '83 CB1100F, .
Australia
Muskys Plunger A7

Online Rocket Racer

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Re: final drive chain
« Reply #3 on: 01.10. 2012 23:07 »
on my race RR I run a 520 heavy plate, using B series sprockets. Not O or X.
Given the pulses a B series loads onto a chain, The A series don't need a 530.

I like the 520, If I need to replace sprockets on the SR, I'll do the same.
A good rider periodically checks all nuts and bolts with a spanner to see that they are tight - Instruction Manual for BSA B series, p46, para 2.
New Zealand

Online Brian

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Re: final drive chain
« Reply #4 on: 01.10. 2012 23:13 »
Just one thing to check for particularly on the plunger models is that you have enough clearance around the gearbox if you use a heavy duty or a "O" ring chain, they are wider than normal and can touch the gearbox.

Online Rocket Racer

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Re: final drive chain
« Reply #5 on: 01.10. 2012 23:39 »
The standard swing arm A10's ran a 530 final and 428 primary (in modern speak).
Theres usually bugger all clearance on any beesa's to run O or X.
A good rider periodically checks all nuts and bolts with a spanner to see that they are tight - Instruction Manual for BSA B series, p46, para 2.
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Offline andy

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Re: final drive chain
« Reply #6 on: 02.10. 2012 17:36 »
thats great info esp about the clearance many thanks to all.  wink2 wink2
only 2 things needed in life wd40 and duck tape....if it moves and shouldn`t use tape if it don`t move and should use wd40.

Offline a10gf

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Re: final drive chain
« Reply #7 on: 02.10. 2012 21:51 »
Tried a "heavy duty" chain for a short while, not enough clearance to the primary case (plunger a10). Nearly ok, but not good. I guess the same would apply to an o-ring.

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Offline duTch

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Re: final drive chain
« Reply #8 on: 03.10. 2012 10:50 »


 Hey RR, any chance of interpreting chain lingo into brain-friendly lingo?  *smile*
 
 I'm kind of half way there, but got lost..and also for the benefit of 'browsers'.cheers
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
Australia

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Re: final drive chain
« Reply #9 on: 03.10. 2012 20:46 »
I borrowed this quote from a forum on moderns:

"A 520 chain has a roller width of 6.35mm, and the 530 has a roller width of 9.52mm, they both share the same pitch (distance between 2 pins)".

The B series all run a 520 as std, the A10's the wider 530, (havent checked what the A7's run) so a small weight penalty and the rollers still wear out.
a std 520 gives better chain clearance (being narrower) and is common to most modern high performance machines, so quite suitable for an A10 if both the sprockets being done. The 530 sprockets are wider.
I hope this makes sense...
With a 520 you also have room to run a heavier plate chain or even a power sapping X (the O is typically still too wide). I run a plain heavy plate 520 on the RR
A good rider periodically checks all nuts and bolts with a spanner to see that they are tight - Instruction Manual for BSA B series, p46, para 2.
New Zealand

Offline iansoady

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Re: final drive chain
« Reply #10 on: 04.10. 2012 10:19 »
In Imperial.....

520 is 5/8 by 1/4

525 is 5/8 by 5/16

530 is 5/8 by 3/8.


This site has dimensions.
Ian.
1962 Golden Flash (arrived)
1955 Velo Viper/Venom (departed)
2004 Triumph Tiger 955i (staying)

Offline duTch

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Re: final drive chain
« Reply #11 on: 04.10. 2012 10:29 »
Ta guys, knew it'd be simple, stuff I would've used to know, but haven't had to deal with for a while, having shaft drive on the Moto *smile*

 Cheers duTch
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
Australia

Offline bsa-bill

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Re: final drive chain
« Reply #12 on: 04.10. 2012 10:51 »
So Ian would it be correct to assume the first figure "5" is the link length in 8/ths and the second figure "20" is the link width in 1/6ths (inchs)

I do so like an orderly world
All the best - Bill
1961 Flash - stock, reliable, steady, fantastic for shopping
1959 Rocket Gold Flash - blinged and tarted up  would have seizure if taken to  Tesco

Online KiwiGF

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Re: final drive chain
« Reply #13 on: 04.10. 2012 10:59 »
Hi BSA bill almost but no cigar, 520 is 5/8 x 2/8, 525 is 5/8 x 2.5/8, 530 is 5/8 x 3/8 etc

Chain must be about the only thing still in imperial units eh.

I'm at the stage in my resto where I need to buy a rear chain and I'm a bit disappointed a 530 o ring probably won't fit, o rings lasting longer etc.
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Online BSA_54A10

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Re: final drive chain
« Reply #14 on: 05.10. 2012 19:38 »
Piston rings.
Bore in mm
width in 1/16"
Radial dept in 1/10"
Bike Beesa
Trevor