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Thread: non metal parts

  1. #1
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    non metal parts

    Hi

    I was just looking in my local motor store and a cheap cycle that was on display had a plastic crank, I was quite surprised.
    Is this ok, or is it just done for cost cutting?

    S

  2. #2
    Asi
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    I had seen a lot of plastic cranks on supermarket bikes (very cheap <60$, the whole bike is 60$) and with plastic brake levers, and others. But many of the "plastic cranks" are really from metal coated with a thick plastic housing (of 3-10mm thick).

    "Exceptionally" low quality that is

  3. #3
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    Very cheap bikes have this. I am pretty sure it is just to make it look like a more expensive crank as better ones have much fatter aluminum arms.

    Lots of cheap bikes have steel cranks which are quite skinny little things without plastic and I suspect this is what it underneatht he plastic on the bike you saw.

  4. #4
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    Indeed. There are no plastic cranks per se, just cheap steel cranks covered in plastic to disguise the fact they are pot metal steel.

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