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RE: Differences between early T160 and Late T160
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Posted by DMadigan (US)   on Friday, September 14, 2018 at 11:32
- in reply to: Differences between early T160 and Late T160 posted by AllenGriffiths on Friday, September 14, 2018 at 00:00
A question since I do not have a T160, the first triples used HDA heads and changed to AM heads in '71. They went back to HDA heads on the T160?
DM
Replies   :
I have seen an AM casting T160 head recently.
The common practice in UK engineering at the time would be to dual source components of this type.
So Triumph would typically pay 50% of the tooling costs for the component.
The foundry would own the other 50% which would prevent Triumph from shifting the patterns to another foundry.
Triumph could then source from either supplier.
In the day -- when strikes were commonplace -- this enabled supplies to be available from the other supplier if one supplier was on strike.
Also by 75 it was probably useful for Triumph to play one suupplier off against the other in respect of cash being tight --they might have been on stop from one supplier so procured supplies from the other.
BTW---HDA were High Duty Alloys --part of the Hawker Siddeley Group (the Hawker part as in Hawker Hurricane of 1940 Battle of Britain fame) based in Gloucester UK.
AM were Aeroplane ansd Motor Aluminium Castings based in Smethwick Birmingham UK who were part of the AE Group (Hepolite pistons, Glacier bearings etc etc).
When working in the UK engineering industry in the 60s, 70s, 80s and 90s I had dealings with all these companies.
Hope I havent bored you! Hi Richard,
Not boring! I think that history on some of this is important, as we (moderns) may not leave information for the future like our forebears did. Motorcycle history can be found in old newspapers, publications when sharing was important to improve the beast, now performance and company secrets take precedence and the day all of this binary bullcrap vaporises with a solar pulse, I hope someone has bothered to printed all this !!!
Best regards, Allen. Hi Dave,
I have the head off my early T160 (XK Dec '74) and I will compare this with the H.D.A T160 head I have, I suspect they are H.D.A manufacture but I will not assume this and put them side by side and let you know if there are any differences.
Best regards, Allen. |
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