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View Full Version : Crank install chainrings seem close


Mike V
04-04-2020, 07:29 PM
I'm installing Campagnolo Chorus cranks 53/39 on an Merckx MXL. Italian Record bottom bracket 103mm. After install the inner ring is close to the frame.

Hindmost
04-04-2020, 07:47 PM
How close? Maybe a few more details, aluminum crank?

The install should be a no-brainer, right?

Mike V
04-04-2020, 08:08 PM
10 speed Campagnolo aluminum crank

The center of inner chainring is 3mm from chainstay

zmudshark
04-04-2020, 08:29 PM
What BB are you using? The proper Chorus/Record sealed BB is 102mm.

robt57
04-04-2020, 08:32 PM
Wrong taper on sq taper BB? Or worn to the point of climbing too far on the taper both a possibility...

Black Dog
04-04-2020, 08:53 PM
On some frames 3mm is all you will get.

Mike V
04-04-2020, 08:58 PM
After digging through the net it looks like 3-4mm is what clearance on this frame is normal.

52cm Merckx and large chainstays make it close

Thanks everyone :banana:

oldpotatoe
04-05-2020, 06:27 AM
After digging through the net it looks like 3-4mm is what clearance on this frame is normal.

52cm Merckx and large chainstays make it close

Thanks everyone :banana:

As has been mentioned..3mm is fine..BUT remember to install on a DRY spindle and use a torque wrench..Grease on crank BOLTS and WASHER but not on spindle..102mm BB spindle, BTW.