If you want to use this gearing combo and not have chain issues you will need to buy the medium cage version of this rear derailleur instead of the short cage derailleur that you have right now. If you don’t want to do that just leave it how it is and don’t shift into the small cogs on the cassette while in the small chaining and you should be fine.
Scalage89 on
Cage is too short
BlazeBuilderX on
too short
Low_Transition_3749 on
Not too short, but you are pushing the limit on that derailleur with that cassette.
Salt_Plankton6199 on
Otherwise, when you don’t cross gears, what happens?
BD59 on
If anything, a pair of links too long. But it looks fine as is if you remember not to use the small/small combo.
Your shop is telling you it’s too short? Find a new shop.
Skindiddler on
Has anything been changed ratio wise? Could need a longer derailleur cage.
ViolinistBulky on
Remove one link I would say.
msainwilson on
You should never use this gear combo in the real world. Smallest chainring to smallest gear or biggest chainring to biggest gear.
jim2527 on
Why isn’t he chain properly engaging the front chainring teeth?
Pick your battle, with those components it’s 1 long on small small but if you remove a link it’ll be 1 link short in big big.
Regular-Host-7738 on
First of all: for the bikes with extra large rear sprocket, you should always use higher gears on the rear derailleur with a bigger front sprocket only – gear “3”!
If you have “3×9” gears (for example), this is doesn’t mean that you can use all combinations of gears: higher gears on the back is only for the biggest sprocket on the front.
Second, I believe it is little bit longer than required (but acceptable!). It is easy to verify: change front and rear gears to the biggest sprockets (both sides), then tension the chain as much, as possible (fold the links of the chain together) – in this situation rear derailleur should be turned to the front, almost horizontally, then just add two-three links and this is wil be your ideally chain length.
P.s. sorry for my English
Connect-Answer4346 on
I think that’s the best you can do with that derailleur. Maybe remove one link.
19 Comments
Looks too short to me
Either to long or the general alignment of the derailleur is chaos
Looks too short
Never kept the chain in X. Never!
Truth can be in the middle.
First looks fine, but second picture looks a bit too long.
How does it run on small-small gearing?
It’s a little long IMO but the real answer is don’t cross chain.
[https://sheldonbrown.com/gear-theory.html](https://sheldonbrown.com/gear-theory.html)
Looks ok. You could try using a [chain length calcluator](https://www.alpinetrek.co.uk/chain-length-calculator/) to confirm.
If you want to use this gearing combo and not have chain issues you will need to buy the medium cage version of this rear derailleur instead of the short cage derailleur that you have right now. If you don’t want to do that just leave it how it is and don’t shift into the small cogs on the cassette while in the small chaining and you should be fine.
Cage is too short
too short
Not too short, but you are pushing the limit on that derailleur with that cassette.
Otherwise, when you don’t cross gears, what happens?
If anything, a pair of links too long. But it looks fine as is if you remember not to use the small/small combo.
Your shop is telling you it’s too short? Find a new shop.
Has anything been changed ratio wise? Could need a longer derailleur cage.
Remove one link I would say.
You should never use this gear combo in the real world. Smallest chainring to smallest gear or biggest chainring to biggest gear.
Why isn’t he chain properly engaging the front chainring teeth?
Pick your battle, with those components it’s 1 long on small small but if you remove a link it’ll be 1 link short in big big.
First of all: for the bikes with extra large rear sprocket, you should always use higher gears on the rear derailleur with a bigger front sprocket only – gear “3”!
If you have “3×9” gears (for example), this is doesn’t mean that you can use all combinations of gears: higher gears on the back is only for the biggest sprocket on the front.
Second, I believe it is little bit longer than required (but acceptable!). It is easy to verify: change front and rear gears to the biggest sprockets (both sides), then tension the chain as much, as possible (fold the links of the chain together) – in this situation rear derailleur should be turned to the front, almost horizontally, then just add two-three links and this is wil be your ideally chain length.
P.s. sorry for my English
I think that’s the best you can do with that derailleur. Maybe remove one link.