Nutsert or Helicoil

Discussion in 'The Garage' started by team ftb, Apr 16, 2013.

  1. showkey

    showkey Long timer

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    +2. ^^^^^^^^^^^^^^^^^^^^^^^^^


    No wonder I do not like flying ..........the plane is held together with helicoils:D
    Time to get aviation on the time-sert band wagon.
    #21
  2. Anorak

    Anorak Woolf Barnato

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    Perhaps there is a reason they use helical inserts?
    #22
  3. ttpete

    ttpete Rectum Non Bustibus

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    Helicoils work well as long as they are installed properly.

    A helicoil must be installed below the surface. The top end has to be seated down in a full groove so it will lock itself in place. The installation tang has to be broken off and removed. Most helicoil problems occur because of faulty installation.
    #23
  4. ericrat

    ericrat Long timer

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    I always install my Helicoils with Castrol Power RS 4T and ONLY on bikes running Michelin tires.
    #24
  5. ttpete

    ttpete Rectum Non Bustibus

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    And? :rofl
    #25
  6. mcma111

    mcma111 Long timer

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    What air pressure are you running in those Michelin tires?
    #26
  7. showkey

    showkey Long timer

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    Nitrogen and dyna beads...........:evil
    #27
  8. ericrat

    ericrat Long timer

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    Nitrogen is so last year, I have moved up to Argon. It has a covalent radius of 106pm... blah, blah, blah...

    Point is, hopefully obviously, that here are many solutions to this problem and like tire and oil threads a lot of huff without much real result past the basic information.
    #28
  9. GreaseMonkey

    GreaseMonkey Preshrunk & Cottony

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    Another blasphemous suggestion is that 1/4" is 6.3mm, you may be able to get by with going with a 1/4" bolt and running a tap into your boogered threads as they are, your spacers may have that much extra clearance in them.
    #29
  10. kantuckid

    kantuckid Long timer

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    Helicoils are great. Fact remains that there are lots of brands of inserts and some mfgs make more than one style or material as it is only logical for the variety of situations for where they're used. You have to use what works for that situation. It might be one of several choices or one certain choice.
    I chime in on these thread repair threads often & say the same things but my point is not opinion, just reality. Sometimes I choose based on what is available w/o buying a whole box or paying shipping on a tiny piece. I used "Thinserts" for my last repair. Some of the ebay sellers do smaller quantities.
    Fact that your repairing a frame tube makes me wonder how the threads were built into the frame? Say/show more?
    #30
  11. ggrimes2

    ggrimes2 Adventurer

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    Helicoil, Time inserts and PEM nuts all have their place. PEM nuts were developed as a way to use a mechanical fastener in sheet metal as well as for blind holes where you can't reach the opposite side. They are for sheet metal and work well.

    Helicoil (tradename) been around for years and are great when you have lots of material and can properly drill and insert the threaded item into a hole. They will not work well with a through hole as the coil will sometimes push out the backside. I've used them for these types of applications "but" had so do certain preparation and use adhesive or staking to retain the coil.

    Time fastener (and a couple variations) make a very nice insert. Keensert is another version which locked into place with a pin. Expensive and used only as necessary. I have used the NAPA/time inserts on a number of Ford pickups when the spark plugs blew out. Last count was eight motors and have has only a single failure. In that case the insert held onto the plug so both blew out of the head. Removal and inspection found that this head had been drilled and tapped several times so there was nothing left for the thin insert to engage.

    Do the job right, if you need find a local machine shop that can clamp and properly drill the hole for an insert. I'[ve got a KTM and parts ain't cheap so spend a few extra bucks and make it last. Cheers
    #31