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  1. #1
    Senior Member WJ13US's Avatar
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    Helicoil inserts where to get them

    I have a beater bike that has a striped thread. I want to install a helicoil and have a friend that has the tools but does not have any helicoils left. Is there a place I can get a pack of 5 or 6 or a single insert? Its on the chain ring side RHT if that helps.

    Bill

  2. #2
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    Most auto parts stores have them as do many hardware stores. Roger

  3. #3
    Member lovemachine's Avatar
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    helicoil

    http://www.mcmaster.com/#helicoil-inserts/=9nox09
    looks like they got 10 packs in metric

  4. #4
    Senior Member WJ13US's Avatar
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    Yes but the problem is the size. The bike pedals uses a 9/16-20 which seems to only be used on bikes. The best I've found is a pack of 50 thats costs about $65. I could get a cheap crank set for that price.

    Bill

  5. #5
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    The 9/16" x 20 thread is a common spark plug thread, so the right hand version should be available at any decent auto parts supply, probably in packs of 10. Many years ago, I contracted with an insert maker to wind the left hand version (which they were willing since they already made the RH version as a stock item) so I could sell crank repair coils for both sides. I sold many over the years, and you should be able to find a LH coil at the bike shop.
    FB
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    WARNING, I'm from New York. Thin skinned people should maintain safe distance.

  6. #6
    Senior Member WJ13US's Avatar
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    FBinNY

    I thought all spark plugs these days are metric therads. I did a quick search of on-line auto parts and all the helicoils were meteric except a couple had 7/8-18. Do you know (or anyone for that matter) of a metric size that would be compatable to the 9/16-20? meteric seem to be easier to get.

    Bill

  7. #7
    coprolite fietsbob's Avatar
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    For aluminum rank arm repairs there are doubly threaded sleeves
    inside and out.
    that include a tap to cut the new larger
    threads so thread in the sleeve.. not specifically helicoil (tm)

  8. #8
    Senior Member WJ13US's Avatar
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    Sorry Bob but even standard thread inserts don't seem to come in 9/16-20. two questions.

    1. What bonehead came up with that size for pedals?

    and

    2. Why did everyone follow him?

    Bill

  9. #9
    Senior Member DannoXYZ's Avatar
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    Hmmm, just because you can't find something, does not mean it doesn't exist. Try this:

    Bike Tools Etc - 9/16''x20 RH PEDAL RECOIL INSERT, Each $1.50

    I believe it was one of the Wright brothers that came up with that threading.

  10. #10
    Old fart JohnDThompson's Avatar
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    Quote Originally Posted by WJ13US View Post
    Sorry Bob but even standard thread inserts don't seem to come in 9/16-20. two questions.

    1. What bonehead came up with that size for pedals?

    and

    2. Why did everyone follow him?

    Bill
    Bike Tools Etc. has them, both left and right thread:
    http://www.biketoolsetc.com/index.cg...em_id=BI-916LB

    http://www.biketoolsetc.com/index.cg...em_id=BI-916RB

  11. #11
    Senior Member WJ13US's Avatar
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    Danno and JohnD:

    Thank you, thank you, thank you...you just saved my like $30.

    Bill

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