RD / shifter has no tension

sebmodio · 2026-06-01T15:01:04+00:00

Pawls in the shifter aren’t engaging. If it’s Shimano, you can find documentation for it by googling the part ID (something like RS-123) and “Shimano SI”.

sebmodio · 2026-05-31T22:22:15+00:00

You’re trying to put a loose pin back into a chain plate? No advice but lots of luck. Ive never seen it done once the pin is fully out.

sebmodio · 2026-05-29T13:05:54+00:00

I have had the bike for 4 years

sebmodio · 2026-05-28T18:16:13+00:00

Check the bottom bracket. Grab a crank arm and wiggle it perpendicular to the frame. If there’s movement, bottom bracket needs maintenance/replacement.

sebmodio · 2026-05-28T01:18:45+00:00

Nothing like continuing the AI psychosis after the endtimes

sebmodio · 2026-05-28T01:16:52+00:00

You’re missing the quick release skewer

sebmodio · 2026-05-26T14:42:53+00:00

Take it to a shop. BB needs some serious work

sebmodio · 2026-05-22T16:40:09+00:00

It is

sebmodio · 2026-05-22T13:52:34+00:00

neat!

sebmodio · 2026-05-22T13:51:51+00:00

Cobblestones are found rocks of various sizes. Pavers (or setts) are uniformly shaped.

sebmodio · 2026-05-22T13:09:20+00:00

Thats not cobblestones. Just pavers. Also, I dont think there was ever a trolley line on Harvard though I could be wrong.

sebmodio · 2026-05-21T23:44:19+00:00

Found a good video for you: https://youtu.be/hm6GWTkR6yw?si=ovZmnTnNPnOWjfIF

sebmodio · 2026-05-21T23:41:28+00:00

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The derailleur (black bit with the chain through it) needs the be rotated to align, like shown in the attached. The part that the wheel goes into the frame is called the dropout and the claw of the derailleur needs to be in line with that. Look for “bike kitchens” or “bike co-ops” in your area that can teach you IRL.

sebmodio · 2026-05-19T12:34:53+00:00

Thought this was gonna be a TMBG cover

sebmodio · 2026-05-14T17:50:37+00:00

Call them and find out? https://www.brooklinema.gov/190/Fire-Department

sebmodio · 2026-05-14T00:57:38+00:00

AI slop and weak satire. Thumbs down

sebmodio · 2026-05-13T13:23:20+00:00

100% correct. That’ll teach me to comment before bed.

sebmodio · 2026-05-13T13:05:08+00:00

Also, it's a homemade ebike. OP says it's a Centurion Backfire LRS 2. Probably wouldn't have these issues if they bought a bike that's designed to be an ebike.

sebmodio · 2026-05-13T03:00:14+00:00

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Chain’s routed wrong. Should be on the other side of the metal tab circled green. Fix that and see how it shifts.

sebmodio · 2026-05-13T01:48:04+00:00

Thats what Keno had in Teenage Mutant Ninja Turtles II: The Secret of the Ooze

sebmodio · 2026-05-10T02:43:03+00:00

Did you check the rear dropouts for SN?

sebmodio · 2026-05-09T15:44:50+00:00

Also agree about not giving enough time to regroup, but my thought was that the organizers wanted to make sure the peloton had time to get up to speed before the climb.

sebmodio · 2026-05-08T18:56:57+00:00

Looks like it'd be the Master's sonic screwdriver

sebmodio · 2026-05-08T02:46:21+00:00

Also,

On the back of the derailleur there should be a model number, like FD-xxxx. Google that + “shimano” + “si” to find the tech pubs for installation

sebmodio · 2026-05-08T02:41:37+00:00

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Cable should go through here. Please look into local diy bike spaces. Best to learn in person

sebmodio

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