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PostPosted: Sun Sep 09, 2018 8:30 am 
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What company made the original production crankshafts for Cooper S?
Read it somewhere and cannot even get close to remembering. Google tends to list current makers/suppliers.
Thanks.


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PostPosted: Sun Sep 09, 2018 6:51 pm 
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Forged bmc cranks came from Garringtons in Bromsgrove, can’t remember cast parts or who did the machining...

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PostPosted: Sun Sep 09, 2018 11:47 pm 
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Location: Melbourne, Australia
The manufacturer may be listed here. I haven't checked.

viewtopic.php?f=5&t=21525


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PostPosted: Mon Sep 10, 2018 3:06 pm 
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I recall reading somewhere that Rolls Royce nitrided the cranks as they were the only firm in the UK that could do it....?


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PostPosted: Mon Sep 10, 2018 3:26 pm 
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Costafortune wrote:
I recall reading somewhere that Rolls Royce nitrided the cranks as they were the only firm in the UK that could do it....?


Indeed they could but there were plenty of nitriding facilities in the Midlands back then as there are today...

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PostPosted: Mon Sep 10, 2018 8:44 pm 
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Costafortune wrote:
I recall reading somewhere that Rolls Royce nitrided the cranks as they were the only firm in the UK that could do it....?


Bullshit :lol: :lol: :lol: , Shardlows were making and nitriding cranks before the second world war ,During the second world ( made cranks for the Spitfire engines and others ) and after the second world war and are still going today , though foreign :o :o :o owned like everything else Goggle ( Sharlows crankshaft manufactures )
Graces Guide is the most interesting read.


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PostPosted: Tue Sep 11, 2018 2:13 am 
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Location: Melbourne, Australia
There was a magazine article that stated Rolls Royce were doing the hardening of the Cooper S crankshaft (and maybe others) for BMC. Can't seem to find it now. :(


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PostPosted: Tue Sep 11, 2018 10:50 am 
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I too have heard that BMC claimed that Rolls Royce nitrided the S cranks. But as Goff states most clearly, there were & are many, many firms all over the country who could have then & could now Nitride a crank.

I used to get stuff done at one time & was charged £2.30 / KG.

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PostPosted: Tue Sep 11, 2018 11:17 am 
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I know I have all this somewhere.

If I recall Rolls were involved in the pre-production stuff, but they didn't do the production runs.


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PostPosted: Tue Sep 11, 2018 5:03 pm 
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mk1 wrote:
I too have heard that BMC claimed that Rolls Royce nitrided the S cranks. But as Goff states most clearly, there were & are many, many firms all over the country who could have then & could now Nitride a crank.

I used to get stuff done at one time & was charged £2.30 / KG.



Yikes, i wish you were my customer 10years ago... did that include gold plating :D

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