Bike Forums - pedal helicoil

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- - pedal helicoil (https://www.bikeforums.net/bicycle-mechanics/230669-pedal-helicoil.html)

2manybikes

09-26-06 01:27 PM

Quote:

Originally Posted by moxfyre

Right, thanks :) I gather that the little tab on the helicoil serves as a retention device, so that it isn't merely held in by the external threads. With the Eldi pedal thread inserts, it's a simpler device which is just a bushing held in place by the external threads and Loctite.

The "inserting tool" holds that tab so you can screw the heicoil in place. Then it gets broken off so it won't interfere with a bolt.

waffenschmidt

09-26-06 07:59 PM

The little tab engages the helicoil insertion tool. It's not a retention device.

The helicoil is held in by the external threads, unless you epoxy it in. Maybe Loctite would work too; I've never used it on a helicoil.

Edit: Whoops, missed 2many's response. Sorry for the repeat.

moxfyre

09-26-06 08:07 PM

Quote:

Originally Posted by waffenschmidt

Gotcha. So there's no huge difference between the Eldi bushings and the Helicoil, except for the way they're inserted.

This has been very educational. I'm tempted to buy some Eldi bushings and practice rethreading old crank arms :)

ISeeDeadHuffies

09-28-06 08:26 PM

Helicoil = hardend steel wire ground @ 30 degree incuded angle & wound to form a thread. Eldi is a solid insert, threaded on the O.D & I.D. I believe the helicoil to be the better of the two options. Either way be sure to get it square. Slightly canted installation will be very noticable.

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