Bendy toy
Registered user
We moan about BMW but Yamaha are even sillier. Their rear suspension rocking knuckle is used on many bike models from Diversions to Fasers. It has four needle rollers, three precision ground hollow pins and at least one special bolt. Replacement parts cost a fortune. Even worse two of the roller outer sleeves are virtually impossible to extract because of a centre stop of larger diameter.
These bearings can be shot in 20K miles. Grease every service is a hassle but does very little because it quickly gets rubbed out and the rollers get a flat on one side.
It would be cheaper for Yamaha to use DU or polymer bushes but clearly they love their needle roller traditions.
These bearings can be shot in 20K miles. Grease every service is a hassle but does very little because it quickly gets rubbed out and the rollers get a flat on one side.
It would be cheaper for Yamaha to use DU or polymer bushes but clearly they love their needle roller traditions.