I need to re-tension a rear gear cable which was fitted a couple of months ago. The problem is that it is difficult to change from second lowest gear to lowest gear - it requires considerable pressure on the gear level. I have looked at online videos but I'm not sure whether to tighten or loosen the cable (using the allen nut - there appears to be no barrel screw) or screw in or out the de-railleur limiting screws. Hope you can help. Thanks.
gear cable
- Thread starter Dickie134
- Start date
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Ajax Bay
Guru
- Location
- East Devon
Screw out the L limit screw half a turn. Test. Maybe all that's needed.If not, another half turn, but no more. Check the cage will go across by hand.
No joy? Screw out the adjuster on the RD cable entry 'point', one turn.
Unusual for there to be no adjuster, but if so, cable 'shortening' increases the chance of getting the cage across to the largest sprocket.
Bear in mind this is 'mummy bear' as too much (aka cable a tad too short) will mean you can't get into the small sprocket.
Once good indoors, go and test on the road.
Last edited:
roubaixtuesday
self serving virtue signaller
Yes, pictures of shifter, rear derailleur and any bosses on the route will help.
But also, rest assured you can't do anything much bad whatever.
Very good guide here https://www.parktool.com/en-int/blog/repair-help/rear-derailleur-adjustment
But also, rest assured you can't do anything much bad whatever.
Very good guide here https://www.parktool.com/en-int/blog/repair-help/rear-derailleur-adjustment
bobzmyunkle
Über Member
Unless you overdo the limit screw adjustment and get the chain stuck behind the sprockets. Careful with that bit.
Dogtrousers
Kilometre nibbler
Or worse, put the mech into the spokes.
Done that. In my defence I was about 16, and an even bigger idiot than I am now.
Ming the Merciless
There is no mercy
- Location
- Inside my skull
Look closely and you’ll see
Ajax Bay
Guru
- Location
- East Devon
As you can see, the right hand screw (bike is upside down btw) is a long way out and the left hand one a long way in.
You can also see the allen nut on the cable but I can't see a barrel adjuster or similar.
I'm new to bike mechanics so simple instructions would be appreciated.
Thanks.
You can also see the allen nut on the cable but I can't see a barrel adjuster or similar.
I'm new to bike mechanics so simple instructions would be appreciated.
Thanks.
roubaixtuesday
self serving virtue signaller
I'm not sure which screws you are referring to.
Regardless, two things to point out...
1) The cable tension can be adjusted at the lever with the adjuster circled in blue. Turn anticlockwise to increase tension. But...
2) There's a big problem - the frayed end circled in red should not be there. Rather the end of the cable has a neat grommet on the end which slots in to the adjuster. It's astonishing the gears work at all! You need a new cable.
Thank you for your reply.
Turns out that with the bike upside down I had photographed the wrong lever: that frayed cable is the end of the seat dropper post!!
Sorry about that.
However, there is an adjuster (identical to the one you have circled in blue) on the gear cable and turning this appears to have solved the problem (although I haven't riden it yet).
Thanks again.
Turns out that with the bike upside down I had photographed the wrong lever: that frayed cable is the end of the seat dropper post!!
Sorry about that.
However, there is an adjuster (identical to the one you have circled in blue) on the gear cable and turning this appears to have solved the problem (although I haven't riden it yet).
Thanks again.
