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Brake Pedal Springs

Beej

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As in another recent thread, I talked about shackles and finding springs I thought I had lost. It seems I still need 2 more. How does one go about buying springsof a specific length? What material do they need to be? etc.I did find this site, but the data required was like egyptian to me:
link




For those interested, here is a pic of the pedals, they are slightly different than the plans.


20081127_151943_Dscf0pedals751.jpg



I am trying to source the spring below:


20081127_152123_torquetuSPRINGb.jpg



The eye to eye distance is 2 13/16".


I assuming shackles are needed either end too?


This is a pic from the 70's plans. The 90's plans have the spring going into the corner diagonally.
 

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