khm

@khm@hj.9fs.net

slacker / overachiever

supercomputing engineer at a national lab.
no, a different national lab.
part-time bureaucrat.
threat influencer.
I put two spaces between sentences and there's nothing you can do to stop me.

"His personality is forceful but not objectionable" -- Tri-City Herald
Website
https://sciops.net
pronouns
he/him
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khm@khm@hj.9fs.net

Replying to an earlier post

the Tourney is shimano's cheaper mountain bike line -- and I see from the picture the bike is a triple chainring. so you want a shimano-compatible 3x[?] mountain derailer where [?] is the number of cogs on the cassette.

can't see from the picture how this derailer mounts; that matters too. some have a clamp built in, some are bolted to a clamp, and some bolt straight to the seat tube.

regardless, the process is:
  • break the chain. it might have a quick-release link for this; if so, you need chain pliers, if not, you need a chain breaker tool.
  • remove the chain from the derailer
  • remove the derailer from the bike (tools: hex wrenches)
  • remove the shift cable from the derailer (tools: hex wrenches)
  • put the new derailer on (tools: hex wrenches)
  • put the shift cable (or a new cable) in the new derailer (tools: hex wrenches)
  • put the chain back on (tools: either a chain breaker tool (no quick link) or chain pliers (quick link))
  • set the derailer limits (either hex wrenches or (as in this photo) a small screwdriver)
  • ride bike
CC: @IrrationalMethod@social.coop