Author Topic: Alloy clutch basket issue  (Read 931 times)

Offline 427Thunderbolt

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Alloy clutch basket issue
« on: 19.07. 2016 03:59 »
Bought an aluminum clutch basket and discovered the bearing race is only 2/3 to 1/2 the width of the original . Looks like a special single bearing may be needed? Anyone here have one or installed one of these ?  If so any info would be appreciated .   May have to go back to original .   
Thanks
Chad

Offline duTch

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Re: Alloy clutch basket issue
« Reply #1 on: 19.07. 2016 04:50 »

 We probably need more info, like pictures and what it's fitting onto, and where it came from for starters... *dunno*
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 427Thunderbolt

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Re: Alloy clutch basket issue
« Reply #2 on: 19.07. 2016 04:58 »
Here's the pic

Offline 427Thunderbolt

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Re: Alloy clutch basket issue
« Reply #3 on: 19.07. 2016 05:04 »
57 a10 preunit Roadrocket

Online WozzA

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Re: Alloy clutch basket issue
« Reply #4 on: 19.07. 2016 07:26 »
The BSA 6 spring clutch part number is 42-3054  which uses the 2 rows of ball bearings
the one you bought I THINK may be for a 4 spring clutch with the roller bearings?  *????*
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Offline 427Thunderbolt

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Re: Alloy clutch basket issue
« Reply #5 on: 19.07. 2016 11:23 »
Damn it .    I should have researched it more .   I guess I'll go back to my original
Thanks

Offline duTch

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Re: Alloy clutch basket issue
« Reply #6 on: 19.07. 2016 11:44 »

 yeabutyeabut... yea can still use it if you get the rest of it; may not be the most economical way t do it, but from all accounts a better arrangement (I had a  '58 RR with 6 spring and it was a bitch)
 I'm sure others will add in, it's out of my realm *smile*
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

Online Greybeard

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Re: Alloy clutch basket issue
« Reply #7 on: 19.07. 2016 13:04 »
The BSA 6 spring clutch part number is 42-3054  which uses the 2 rows of ball bearings
the one you bought I THINK may be for a 4 spring clutch with the roller bearings?  *????*
The early 6 spring, like on my plunger has one set of rollers [/pedant]

Offline coater87

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Re: Alloy clutch basket issue
« Reply #8 on: 19.07. 2016 13:31 »
 I would get a hold of lowbrow, and ask them what is up. I have not bought from them, but buddies tell me they often have to call to get some more information from them.

 It might just be that they know exactly which bearing you need.

Lee
Central Wisconsin in the U.S.

Online RichardL

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Re: Alloy clutch basket issue
« Reply #9 on: 19.07. 2016 14:29 »
Looking at the Lowbrow site, they are showing the rollers right next to the basket.

I have a question. Will an alloy sprocket hold up for any length of time?

Richard L.
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Offline muskrat

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Re: Alloy clutch basket issue
« Reply #10 on: 19.07. 2016 19:40 »
G'day Chad.
It looks like a 4 spring job so you'll need the rest to make it fit (lots more $$$$). http://www.shop.srmclassicbikes.com/product/bsa-a10-a7-b3133-4-spring-clutch-pressure-plate-adaptor
https://www.draganfly.co.uk/index.php/bsa/bsa/category/910-4-spring-triumph-type-without-cush-drive

G'day Richard. It should last, bathed in oil. I have an alloy rear sprocket on the cafe, has outlasted 2 chains so far. I'd be more worried about the clutch plate tabs wearing the basket.
Cheers
'51 A7 plunger, '57 A7SS now A10CR, '76 XT500, '77 AG175 '83 CB1100F, '81 CB900F project.
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Offline 427Thunderbolt

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Re: Alloy clutch basket issue
« Reply #11 on: 20.07. 2016 19:37 »
Thanks all for pointing me in the right direction

Offline oka

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Re: Alloy clutch basket issue
« Reply #12 on: 21.07. 2016 05:15 »
I am using this chainwheel with a 3-spring clutch. I have used it for 5000 miles and there are no problems with wear yet.

Offline 427Thunderbolt

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Re: Alloy clutch basket issue
« Reply #13 on: 22.07. 2016 14:21 »
How many frictions discs and plates do you run in a 3 spring setup?

Offline oka

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Re: Alloy clutch basket issue
« Reply #14 on: 24.07. 2016 19:14 »
It is a 7 plate from Surflex.

You can see a more detailed description in the  thread "3 spring?" from 24.12.2015