Re: Front derailleur issues

On Mon, 14 Apr 2025 20:11:59 -0500, AMuzi <am@yellowjersey.org> wrote:

On 4/14/2025 6:53 PM, Catrike Ryder wrote:

 
After several rides where I stopped to fine tune my old Microshift
deraileur, I rode today without touching it.  It performed all shifts
up and down quietly with no problems.
 
"So, my wife asked when I relayed that to her, are you going to return
the new one that's due here tomorrow?"
 
"Of course not," I answered. "I will rip the old one off and install
the new one that's designed for a big ring of 50 teeth."
 
The old one sits way to high above the 50 tooth ring, and even though
it's never overshifted the chain off the outside in my tests, it's
just wrong.....
 
I also have an idler making noise. I think it's bearings are shot. The
Catrike will go back on the repair stand tomorrow without my proposed
modifications.  The parts for that are not here yet.
 
--
C'est bon
Soloman

>
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.

THis idler is very old. It's one without teeth and on the return path
It used to be mounted between the bottom bracket and the crossarms,
and now it's the first one from the rear deraileur. It seems to be
wobbling on it's mount, so I suspect it's shot. I'll check it today.

--
C'est bon
Soloman