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Old 07-05-2013, 05:22 PM
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JohnP2
 
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Default Let's talk thread lock (and shimming)



I've never used thread lock on my clutch bell to drive shaft setups and have had zero problems....until now.

The short version is I noticed the other day my clutch bell on my Mugen (Werks B6) has more play than I had initally set. Upon inspection, the screw going in to the shaft pin was a ittle loose (enough to move the bell out about 1mm). Initially I thought perhaps it was the shimming, but I've gone through about a gallon with this setup and it just now came loose. I tightened it up (bell spins freely) and after about 1 tank I noticed the additional play is back.

I'm VERY worried about putting thread lock on this. If I have to as a last resort - Iwill. It uses a 3x8 button head, but will switch to cap head in the event I strip it a little easier to get out.

Theortically you'd think there was some binding causing the screw to come loose, but as noted the shim set up is good (as I know them to be).
Has anyone else has this issue? How manyof you thread lock this screw?

Thanks!

EDIT: I just checked it and the screw was TIGHT,but there wasatleast 1mm more play then whenI set it last - earlier this week when I first noticed it. Either that or I'm going mad (always a possibility). Bearings are fine, spins like on ice, etc.I'll clamp itdown again (this time with a locking washer) and see what happens thisweekend.