Loose outer chainring
Here's the score; My drivetrain needed replacing - I have a Pro-lite driveline crankset, and looking on their website, they use 130bcd rings. I got the replacements - Shimano SG B-53 and B-39.
When I put it on the chainring bolts, they won't tighten up enough. I've measured, and they're the same thickness in diameter. There's however slight mm gap as can be seen in the photos below between the chainrings fixings and crank spider. I'm not sure this should make a difference though if they're being clamped down? When I put the old 53t chainring on, it tightens up fine without a problem. :?
When I put it on the chainring bolts, they won't tighten up enough. I've measured, and they're the same thickness in diameter. There's however slight mm gap as can be seen in the photos below between the chainrings fixings and crank spider. I'm not sure this should make a difference though if they're being clamped down? When I put the old 53t chainring on, it tightens up fine without a problem. :?
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In an attempt to find where the play could be coming from I discovered that the old chainring doesn't have a recess for the bolts - the new one does. I flipped the outer ring so the recess was hidden and it tightens up absolutely fine.
Looks like I'm going to have to source some washers -10mm inner diameter x 11mm outer diameter x 1mm thick i - going to be a nightmare!
Will also try all the LBS' - cheers!
Or is it loose!?
Corrected to avoid bondage frisbee-fetishists PM'ing me.
I'm going to try a few DIY shops, but I'm not holding my breath!