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Easton EC90 SL fork nut slipping?

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Easton EC90 SL fork nut slipping?

Old 01-05-15, 01:58 PM
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Bob Ross
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Easton EC90 SL fork nut slipping?

My wife has a bike with an Easton EC90 SL fork. Since it is a travel bike built with S&S frame couplers, the top cap gets unscrewed whenever we remove the stem from the steerer for packing.

For the first ~4 years that she owned the bike removing the top cap was a non-event: Unscrew the bolt, & try not to lose the spring and washers. Done, no problemo.

But the last 2 times we travelled we've encountered a frustrating new development: The star nut equivalent (I'm guessing this is what Easton referred to as the ITT™ anchor nut) is no longer staying in position inside the steerer. Upon unscrewing the top cap bolt this anchor nut (which looks like a flat silver 1-1/8" diameter disc w/ a threaded hole in the center) slips down inside the steerer, and it's a real PIA to get it back out and in place when we re-attach the top cap bolt.

So my question is, is this broken, or is it just that the friction that held that nut in place when new has finally succumbed to age? I.e., was there originally something besides just friction that held the nut in place?

Any insights would be greatly appreciated.
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Old 01-05-15, 02:09 PM
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On my Easton EC90 SLX for that part is screwed in correct if its the same you might just get it down to were it belongs and use something to make it stay where you want.
Locktite is one but I'd just put a dab of silicone in the corner of the stem and that ITT anchor so it stays in place so if needed you can still remove it easy.
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Old 01-05-15, 02:34 PM
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I have two Easton SLX 90 Forks and both have expander plugs in them. Typically these have a threaded hole for the top cap bolt and another larger hole for an allen key to tighten them in position in the steerer. It sounds like the compression bolt in your steerer has loosened allowing the plug to slip. See if there is an obvious second tightening hole to reset and hold the expander's position.
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Old 01-05-15, 02:51 PM
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Not familiar with your problematic Piece.


I got BBB's BHP21 BHP-21 - Headset parts - BBB the clever thing is the center Bolt inside the 6mm hex , its threaded 6x1.

so once the wedge is tight , the top cap screws in .. It can Be Buried entirely inside the steerer tube , OR,

As I Used it, the stack of Keyed shim spacers engage the keyway in the Quill.. in that situation the number of shim spacers
determines how much taller the Steerer tube Extension will be..

It may be more reliable , and simpler than the Expansion Plugs that were needed for CF Forks.

wiggle.com | BBB BHP-20/21 Stem Extender | Oversize Stems
the 20 is 22.2* ~ 21, 25.4..

* bolt hex is a next smaller size as I Understand .
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