Bike Forums - View Single Post - What is it about 7 speeds?

10-19-20 | 04:29 PM

#18

dddd

Ride, Wrench, Swap, Race

Joined: Jan 2010

Posts: 9,811

Likes: 1,785

From: Northern California

Bikes: Cheltenham-Pedersen racer, Boulder F/S Paris-Roubaix, Varsity racer, '52 Christophe, '62 Continental, '92 Merckx, '75 Limongi, '76 Presto, '72 Gitane SC, '71 Schwinn SS, etc.

If you have access to a bench grinder with a good, sharp squared edge on the wheel, you can quickly remove the 1-2mm from the ends of the splines and then use an 11t top cog and lockring. Did this many times back in the 90's.

If you have a Dremel then this wheel will do the job nicely.
https://www.grainger.com/product/41HR09?cm_mmc=PPC:+MSN+PLA&gucid=N:N

S

aid:MS:CSM-2295:TVRYAD:20501231&s_kwcid=AL!2966!10!78821373774310!4582420881766878&ef_id=54772aa4b8f01bb5e32075 2aab79b9ff:G:s

EDIT: Also the similar Dremel #85422 (green) wheel for harder materials. What I use around here for modifying or restoring cog teeth, or for removing heads from Shimano chain pins when a "connecting pin" link needs to be removed from an installed chain. Also useful for massaging axle-stop and claw-hanger hardware to gain chain clearance.

Last edited by dddd; 10-19-20 at 04:59 PM.

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