Re: Derailleur rattling?

On 5/15/2025 8:10 AM, Ted Heise wrote:

On Wed, 14 May 2025 16:36:58 -0500,
   Mark J cleary <mcleary08@comcast.net> wrote:

  On 5/14/2025 3:53 PM, Catrike Ryder wrote:

 

+1 to that last one. Making changes on the work stand is often
    followed by a stop a mile or two out on the next ride to
    get things right.

 Yup.
 

  He test road it and it was silent. He was a happy guy. Really
  over not much because it only had slight rub. The middle and
  small rear should be a working gear.

 Just a minor comment on that last bit.  On my tandem, the chain
doesn't like the two smallest cogs when on the middle ring.
Tracked this down to chainline, basically the chain comes into
contact with the inner side of the big ring and feints at shifting
to it.  According to my tandem dealer, there's no simple fix to
this, so I just don't use those combinations.
 

Right, bikes vary in that a lot.
It's affected by chain width, chainstay length, lateral crank position etc.
--
Andrew Muzi
am@yellowjersey.org
Open every day since 1 April, 1971