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-   -   how do barrel adjusters work? (https://www.bikeforums.net/bicycle-mechanics/1168708-how-do-barrel-adjusters-work.html)

epnnf 03-20-19 07:22 AM

how do barrel adjusters work?
 
Went to replace the cables on the Kona. Cut the old cable, took it out & turned the barrel adjusters all the way in. I turned them & turned them & turned them........ They wouldnt stop; I could turn them in forever. Also, they were not moving. Previously, the barrel adjuster was a threaded thing- you could only turn it in so far before it would bottom & turn it out til it ran out of thread. Apparently, now there is a new design? sup?

andrewclaus 03-20-19 07:32 AM

Did you try removing the barrel adjuster completely? If it's not engaging the threads in the shifter, it should fall off without the cable in there. It's possible it's completely stripped, but I've never seen that happen. See if you can pull it out of the shifter and inspect both male and female threads. I assume you're talking about the adjusters on the shifters.

cyccommute 03-20-19 07:35 AM


Originally Posted by epnnf (Post 20846441)
Went to replace the cables on the Kona. Cut the old cable, took it out & turned the barrel adjusters all the way in. I turned them & turned them & turned them........ They wouldnt stop; I could turn them in forever. Also, they were not moving. Previously, the barrel adjuster was a threaded thing- you could only turn it in so far before it would bottom & turn it out til it ran out of thread. Apparently, now there is a new design? sup?

It sounds like your barrel adjuster is stripped. You didn't say which barrel adjuster however. Some brake barrel adjusters aren't threaded into the frame. They just fit in a socket and you use the jam nut to adjust the length. The Jagwire M6 on this page is an example That's kind of old school but still done on a few bikes.

Crankycrank 03-20-19 09:14 AM

Photos would help. Some adjusters have the knurled knob that disengages when pushed down and other designs exist.

curbtender 03-20-19 09:25 AM

You have the the inner bolt and spring in there? Some you just twist and others require you to pull sleeve up to adjust.

fietsbob 03-20-19 11:12 AM

You have to hold 1 side (of an inline adjuster) as you turn the other, it may take 2 hands..

they work by making the housing longer and so the cable relatively shorter..

epnnf 03-21-19 09:31 AM

https://cimg8.ibsrv.net/gimg/bikefor...17c331839c.jpg
https://cimg0.ibsrv.net/gimg/bikefor...6270ab58c6.jpg

rear shifter on my Kona

Originally Posted by Crankycrank (Post 20846665)
Photos would help. Some adjusters have the knurled knob that disengages when pushed down and other designs exist.

duh, guess they work the same way as the barrel adjusters on a typical RD:
(ignore dates on photos)


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