Floppy Gear Selector

I have a rather floppy gear change lever, and the condition has been made worse by the addition of CNW rearsets. Since this is just the beginning of my prime riding season, can I get away with replacing just the outer cover bush?

does it leak oil?

maylar said:

does it leak oil?

Click to expand...

No leaks. O-ring was upgraded to seal years ago. Amazing how much movement is allowed without leaking.

I suspect that's the problem with rear set application. Your lever on the gear shift is about 1/4 the length of the original, so the law of physics says you are putting 4 times the pressure on the bearing surface when changing gears. Also, the pressure is at right angles with that of the original lever, which has a balancing effect from the internal lever.
I*e when you push the original lever up, it causes the shaft to move upwards under load, but the internal part of the mechanism puts downward pressure on the pivot point. It isn't balanced because the internal lever is about 1/6th the length of the external one. AMC did get that right but you cant do much about the end to end rocking moment.
Have fun

Dereck.

Not sure what you mean Dereck, as the CNW rear set uses a reversed gear lever, not a linkage style lever with rose joints?

To be clear....the play in the selector spindle existed prior to installing the CNW shifter; The CNW shifter didn't cause the problem. The main issue is that the toe piece of the CNW shifter is 6 inches out from the case/spindle, as it wraps around the kick start lever. This creates a relatively long (compared to stock) lever arm with the outer case bushing as the fulcrum. The amount of movement at 6 inches is also more exaggerated that with the stock. I am going to replace the bushing....won't hurt.

Dave.
Thought it might have been like the remote linkages I have seen pictures of on this site. Looking something like the front drum tls brake linkage. If its a reversed lever then should be no extra problem. Haven't found the need for rear sets so not familiar with all varieties and assumed the above. Yakatak's description above does indicate more end to end rocking leverage is now in force. The bearing surface is only about an inch long or so and now its working against a 6"overhand rather than a 2"overhang. Just an observation.
Dereck