Position of RD?

[Deleted member 89023]

Hi all, could any of you good people take a look at these photos and the position of the rear mech in relation to the hanger? The chain is reluctant drop onto the smallest socket (even with the gear cable disconnected) and I was wondering if the rear mech's positioning is the cause. The cage seems quite high when the chain does eventually drop onto sprocket number 9. Many Thanks.

 

[I like Skol]

This comes up semi-regularly. Your mech is mounted wrongly. What looks like the two pivot points should be aligned almost horizontally before screwing the mech into the hanger.

 

[I like Skol]

https://www.cyclechat.net/threads/rear-derailleur-installation-issue.251766

 

[Deleted member 89023]

This comes up semi-regularly. Your mech is mounted wrongly. What looks like the two pivot points should be aligned almost horizontally before screwing the mech into the hanger.

Thanks. The rear mech will need replacing soon so I will remember that advice.

 

[Ming the Merciless]

Rear mechs last decades if a crash doesn’t upset them. You sure it needs replacing, and for what reason?

 

[Deleted member 89023]

Rear mechs last decades if a crash doesn’t upset them. You sure it needs replacing, and for what reason?

The hex nut connecting it to the hanger has rounded so the mech cannot be adjusted. Might as well replace the hanger & mech.

 

[I like Skol]

Just unscrew it and remount. No need to disconnect the cable or anything.

 

[Deleted member 89023]

The hex nut connecting it to the hanger has rounded so the mech cannot be adjusted. Might as well replace the hanger & mech.

*hex bolt*

 

[Deleted member 89023]

Just unscrew it and remount. No need to disconnect the cable or anything.

Unfortunately I cannot unscrew it due to the above reason. The hex key just keeps turning in the rounded hole.

 

[Sharky]

Unfortunately I cannot unscrew it due to the above reason. The hex key just keeps turning in the rounded hole.

Try with a torx Allen key. Might get enough bite.

 

[Deleted member 89023]

Try with a torx Allen key. Might get enough bite.

Good idea that.

 

[Ming the Merciless]

The hex nut connecting it to the hanger has rounded so the mech cannot be adjusted. Might as well replace the hanger & mech.

So replace the hex bolt, rather than whole mech

 

[Deleted member 89023]

So replace the hex bolt, rather than whole

I've had a spare mech hanging round for a while, but yes, if I can shift the hex bolt I will just replace that.