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Hobbing a Brass or Aluminium Drive Pulley to Stop Belt Slippage

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Jim:
I've posted up photos before of hobbed pulley drives. It's a process that works very well and gives a professional result (very similar to what Wilesco does on their drive pulleys). I've done well over a hundred brass and aluminium drive pulleys now.

Here's a vid I did a few years ago of the process -

http://www.youtube.com/watch?v=adQg7KxkGf8

Jim:
Some pics of pulleys I have hobbed

Jim:
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Jim:
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Jim:
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