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66S
PostPosted: Wed Jun 03, 2009 10:54 am 
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Hi guys,
Apparently, the pulley on UK Cooper S dynamo's (generators) was larger in diameter than regular Mini pulleys. Has anybody got knowledge of this difference?

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Al
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drmini in aust
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PostPosted: Wed Jun 03, 2009 12:39 pm 
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Yep, they were bigger here too. (I think maybe on the 997-998 Cooper also?)
That's why a Mk1 S takes a longer fan belt... 850 instead of 813.
Minis with alternators run an 825.

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66S
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PostPosted: Wed Jun 03, 2009 1:04 pm 
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Hi Kev,
Do you have one you could measure at all please?

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Al
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Wombat
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PostPosted: Wed Jun 03, 2009 1:12 pm 
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Was there a difference between Cooper S dynamos and other Mini dynamos? - I have a generator at home I can measure but it was off an 850

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66S
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PostPosted: Wed Jun 03, 2009 1:28 pm 
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Hi Dave,
The dynamos (generators) were the same, it was the pulley that differed. I'm figuring the S pulley was 3-5/8" or 3-7/8" but hopefully someone will be able to have a measure-up.

Al
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drmini in aust
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PostPosted: Wed Jun 03, 2009 1:43 pm 
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66S wrote:
Hi Dave,
The dynamos (generators) were the same, it was the pulley that differed. I'm figuring the S pulley was 3-5/8" or 3-7/8" but hopefully someone will be able to have a measure-up.

Al

I did look in the Mini King parts book but he doesn't list it.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:
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66S
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PostPosted: Wed Jun 03, 2009 2:10 pm 
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Hi Kev,
Knowing Joe Lucas, the correct pulley is likely to be a common one and shouldn't be too hard to find.

Regards
Al
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Morris 1100
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PostPosted: Wed Jun 03, 2009 6:49 pm 
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I just measured mine and it is 3-7/8"

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John Smidt
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PostPosted: Wed Jun 03, 2009 7:53 pm 
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drmini in aust wrote:
66S wrote:
Hi Dave,
The dynamos (generators) were the same, it was the pulley that differed. I'm figuring the S pulley was 3-5/8" or 3-7/8" but hopefully someone will be able to have a measure-up.

Al

I did look in the Mini King parts book but he doesn't list it.


You are correct Kev I did not include the S pulley :oops: Originally there were two types of pulley, One for 850 - 997 & 998, Original Part Number was 12A34 which superseded to a cast iron pulley AYG 9029 The other pulley was for the 1275 Original part number 12A34
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Aussie Brian
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PostPosted: Wed Jun 03, 2009 9:41 pm 
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close your wallet i can't read the tape

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Mick
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PostPosted: Wed Jun 03, 2009 10:15 pm 
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I think the Balrog lives in there Morris...

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Morris 1100
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PostPosted: Wed Jun 03, 2009 10:18 pm 
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See what happens when you stick a tape measure into an engine bay on a dark rainy night and let off a flash. I would bet that the spider webs are from redbacks. :lol:
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Fiji
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PostPosted: Wed Jun 03, 2009 10:22 pm 
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i rekon some hand measurments would be more accurate :D.

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Morris 1100
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PostPosted: Wed Jun 03, 2009 10:33 pm 
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Fiji wrote:
i reckon some hand measurements would be more accurate :D.

Here you go...

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I still can't see how that will help though? :?
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66S
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PostPosted: Thu Jun 04, 2009 5:55 am 
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Hmmm, dirt under the nails, must own a Mini.

Al
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