Removing Elgin (Musselman?) rear gear?


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mickeyc

Cruisin' on my Bluebird
Jul 21, 2013
2,432
1,338
Rochester Hills, MI
#1
Got the outer ring off (right hand thread, righty loosey) and it looks like the gear is threaded too but I tried loosening it but afraid to clamp the piece it's attached to too tightly, afraid of messing it up. Any suggestions?

ring gear.jpg
 
Likes: tripple3

z-bikes

Finally riding a big boys bike
Jun 21, 2010
407
170
Green Bay, WI
#2
I think the gear comes off by turning it to the left, counterclockwise which means right hand thread. This would make sense because as you pedal it would tend to tighten up, not come loose. A standard right hand nut goes on by turning it to the right, clockwise. A left hand nut goes on by turning it to the left, counterclockwise. I'm about to take mine apart so I'll post here later to let you know if I got it off and how I did it.
 

100bikes

Finally riding a big boys bike
Mar 8, 2013
144
83
Minneapolis, United States
#3
To remove the cog, you would likely need to dis assemble the hub.
There is a tool designed to grab the driver in a vice to secure it.
The tool basically looks like a large nut with a slice through it.
The tool threads mate with those on the driver and when locked in the vice, no damage to threads.

The proper tool to spin the cog off would be either a chain whip or a hook type spanner designed for same.
 

tripple3

Riding Miles; Collecting Smiles
Sep 25, 2012
6,205
27,869
Beach Cities, CA 92708
#4
The cap is reverse thread; the COG is regular direction.
Take the cap "Loose" but not off. Reverse.
Remove the pedal and use a breaker bar on the crank to "Brake" the cog free "Backwards"
On the bike; with the chain and crank that tightened it up all these years.
This was explained to me but I have not tried it yet.
 

PCHiggin

Cruisin' on my Bluebird
Jan 22, 2008
3,168
911
Ryderwood, United States
#5
Ditto on the above,The sprocket is R/H thread,the lock nut/ring is L/H thread,you must have turned it C/W to get it off. Turn the sprocket CC/W and it will spin off. Hold the axle (on the opposite side of the hub) in a vise with softjaws. Hold the sprocket with a rag and it should come off without too much trouble
 

TR6SC

Wore out three sets of tires already!
Jun 12, 2016
991
2,529
66
Eureka, CA
#6
To remove the cog, you would likely need to dis assemble the hub.
There is a tool designed to grab the driver in a vice to secure it.
The tool basically looks like a large nut with a slice through it.
The tool threads mate with those on the driver and when locked in the vice, no damage to threads.
The proper tool to spin the cog off would be either a chain whip or a hook type spanner designed for same.
This tool is something that you can make at home. All you need is a brake clutch from an extra hub assembly. I made a couple of these for ND hubs. The apex gears for the Musselman are close enough to ND to use this tool, but why not make one?

The cap is reverse thread; the COG is regular direction.
Take the cap "Loose" but not off. Reverse.
Remove the pedal and use a breaker bar on the crank to "Brake" the cog free "Backwards"
On the bike; with the chain and crank that tightened it up all these years.
This was explained to me but I have not tried it yet.
This method requires you lace up the hub and install in the bike with a chain in place. Works great.
 

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