Re: Front derailleur issues

Frank Krygowski <frkrygow@sbcglobal.net> wrote:

On 4/14/2025 9:11 PM, AMuzi wrote:

 
Most common roller noise is a dry sleeve. It's just a simple journal,
often steel on steel, which will show a bright red dust if it's been run
dry.
 
Better designs are steel on bronze or oilite bronze and some are ceramic
sleeves.  All of them run better, quieter and longer with some oil on
the sleeve.
 
There are miniature cartridge bearing models which are seldom noisy and
run a very long time with factory grease under the seals.
 
Replacement is seldom necessary. Clean out the crud and oil it.

 
After one muddy tour I had a squealing idler pulley. I took the ball
bearing idler out of the ancient Huret Svelto derailleur in my parts box
and used it as a substitute. IIRC, that's still working well on the bike.
 
I do have some sealed bearing idlers in a drawer somewhere.
 
 

I’d suggest folks ride in cleaner and dryer environments! I not only get
Jockey wheels that wear down ie teeth loose their edges, but also the
bearing or possibly bushes do get to the point that they get sticky, can
lube them and so on, which keeps them going a touch longer but it’s fairly
futile effort really as well essentially it’s shot, and will keep on
squeaking/starting to jam.

Not every year but every other or so.

Is only the MTB/Gravel bike, the commuter bikes i can’t remember changing
them though both have new rear mech’s one is new ish bike the other had
Cues drive chain last year or so.

Roger Merriman