Anti-vibration weights

[nelmo]

My gear lever vibrates a lot (GBS quickshift) - can anyone suggest some sort of weight I can attach to the lever to dampen the vibrations?

Searched online but can't find anything suitable...

[IanS]

Could it actually be something like your propshaft being out of balance?

Yes the sierra has rubber dampers in the gear lever but these were noise limiters rather than vibration dampers so I suspect that something is well out of ballance.

[richyb66]

What about the nylon saddle that engages with the bottom of the lever.

https://www.bearingkits.co.uk/TYPE-9-GEARBOX-GEARSTICK-PLASTIC-SADDLE-OE/144.htm

[nelmo]

It's always been like this since I did my build 5 years ago. The prop was provided by GBS, so hopefully it was correctly balanced?

Below is the quickshift mechanism - as you can see, lots of potential for vibration with all those long lengths dangling...

 

I was really looking for some sort of weight I can bolt onto the lever, just above that rose joint.

 

Edited June 19, 2022 by nelmo

[richyb66]

MT75 then, not type 9.

Maybe a heavy rubber suspension bush on the bottom of the lever? What diameter is the bottom part?

Edited June 19, 2022 by richyb66

[nelmo]

Annoyingly, it's tapered but around 15mm...I was thinking of a load of penny washers covered in a piece of bicycle inner tube rubber - does that sound stupid?

[richyb66]

That would work, you're just adding mass to create a damping effect.

 

[nelmo]

I'll give it a go - what could possibly go wrong?