Hi, I’m installing a Shimano R7000 GS rear derailleur on my bike to work with a 34t cassette for a trip to the Alps. I’m finding the Shimano dealer manual ambiguous in respect of installing the ot-rs900 cable. There are two plastic end caps, one with a tongue, and an aluminium end. What goes whe…

[image] foxyscott: What goes where, aluminium into the derailleur, and tongue into the frame? Yes, this exactly.

Cheers Chad. I queried it as the Shimano manual shows a tongue at the derailleur end.

I will recheck with my Shimano tech video. Metal in RD [Screenshot_20190728-110554_Chrome]

Thanks. That’s interesting, it still looks like there is a tongue there in the photo where the cable exits the barrel adjuster on its way to the groove clamp.

There is a tongue, but it’s part of the barrel adjuster. There’s an end cap that comes with the cable housing which apparently is supposed to mount into the frame. On my bike that doesn’t work because there is already a plastic (clear/translucent) cable liner installed that runs through the frame. I…

What’s the optimum length of this flexi cable to the derailleur? I’ve just changed inner and outer rear derailleur cables and shifting down the block is poor. I’m thinking I might have that derailleur cable housing cut too short or too long. I don’t have the old piece to compare to

I cut it to this length a few minutes ago. Can’t say it’s a huge improvement but it’s definitely not worse. The housing is so flexible i think it can be cut even more. Anyone with any advice?? [20220321_174330]

I was thinking the same. It’s just that bit sharp. Thanks for the reply

This webpage has a chart to help with cutting [image] OT-SP41+OT-RS900 Polymer Shift Cable Set for R9100/R8000 The secret in polymer coating is that when viewed under a microscope it looks like a series of tubes wrapped around the cable. This means less surface area rubbing the internal…

Shimano OT-RS900 Cable Installation

Equipment

Docwatts May 31, 2023, 7:48pm 11

This webpage has a chart to help with cutting

Topic		Replies	Views
How easy is it to replace gear cables? Equipment	18	2345	April 9, 2025
Switching to a Medium Rear Derailleur Cage Equipment	16	8115	July 7, 2020
Front derailleur indexing fail Equipment	9	2848	April 29, 2020
Need mechanical advice: shifting problems Equipment	30	1707	July 22, 2023
Elite Direto cassette - can’t align rear derailleur Equipment bike , trainer	35	16613	September 27, 2023

Shimano OT-RS900 Cable Installation

Related topics