pewe
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| posted on 14/8/14 at 01:58 PM |
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Re-tempering spring steel
The foot-brake lever return spring on the bike needed shortening then re-tempering.
First part is easy - heat to cherry red with a blow-lamp, cut whilst hot, reform then plunge into warm oil.
Had never needed to re-temper spring steel but this youtube shows how easy it is.
Basically once formed re-heat to stage two blue then allow to cool naturally - simples.
Thought others might like to know that....
Cheers, Pewe10 
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NigeEss
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| posted on 14/8/14 at 10:53 PM |
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Handy to know.
There's a small factory local to me that makes springs. I have often bought the source wire from
them which is fairly easily formed into springs but when roasted in the oven at 200c tempers into
proper springs. 
Time is an illusion. Lunchtime doubly so.................Douglas Adams.
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