5600 shifter not moving rear mech far enough ?

topdude

Hi, having a problem with shifting at the rear,
105-5600 r/h shifter
105-5701 rear mech
new jagwire cables
Sometimes the rear mech does not move enough to give a clean shift when shifting up to larger sprockets.
Always seems ok going down to smaller sprockets.
Sometimes there is an extra small click from the lever as it starts to move.
If i overshift with the lever the gear selection is good every time
If i pull the cable by hand it moves the mech easily and all gears snick in fine.

So, is it a compatibility issue or something wrong with the r/h shifter ?
Any advice apreciated

desweller

Have you fitted new cable housing as well as new cables?

Compatibility is not a problem with this selection of parts.

topdude

Yes, new housings and inners.

desweller

OK, the first things I would check then are:

1. Cable correctly clamped at derailleur end
2. Cable pip correctly seated in shifter
3. All housings fully home in their frame stops
4. Double check that the cables are free to move in all the lengths of housing

topdude

1. Cable correctly clamped at derailleur end
2. Cable pip correctly seated in shifter
3. All housings fully home in their frame stops
4. Double check that the cables are free to move in all the lengths of housing

Will strip the cable and check the above, will also flush shifter with WD40 just in case.
Thanks.

mattv

Try replacing the outer with shimano. Also, try UNSEALED gear outer end ferrules for less drag. Check hanger is straight and chain is nit stretched.

stanthomas

Yes, it's a compatibility issue. 5600 series and 5700 series pull a different amount of cable. 5700 / 6700 are interchangeable as are 5600 / 6600 / 7800.

desweller

5700 and 5600 are both 10-speed and have the same cable pull. I don't know where you are getting your information from but it's not a reliable source.

stanthomas

DesWeller wrote:

5700 and 5600 are both 10-speed and have the same cable pull. I don't know where you are getting your information from but it's not a reliable source.

Shimano say they're not compatible. Whether they're incompatible enough to make a difference is something we might debate. I know lots of people mix 'n match and I run a 9/10 mix myself but, when all else fails, keeping everything in the same series seems like the best option.

The OP complains of shifting to a larger cog which is usually the direction that works well 'cos it doesn't depend on spring tension or cable friction. Perhaps try backing out the cable tensioner half a turn to balance out the perfect up-shifts with the intermittent down-shifts?

dgunthor

parts should be compatible. is limit adjustment ok for the largest sprocket? (thinking maybe the derailier can't quite go far enough)

also, if it's a large sprocket, is the mech B screw adjusted ok so that there's sufficient vertical gap between the jockey wheel and the sprocket?

desweller

stanthomas wrote:

DesWeller wrote:

5700 and 5600 are both 10-speed and have the same cable pull. I don't know where you are getting your information from but it's not a reliable source.

Shimano say they're not compatible. Whether they're incompatible enough to make a difference is something we might debate. I know lots of people mix 'n match and I run a 9/10 mix myself but, when all else fails, keeping everything in the same series seems like the best option.

That's the brakes. Shimano slightly altered the MA for their brakes a few years ago, although in real terms I don't think it makes that much difference. Doesn't affect the shifting though.

topdude

Update, tried everything including cables and a different rear mech. It is definitely the 5600 shifter not pulling enough cable every time.
Is this a common thing ?
Will try to find a good / used replacement.
Thanks to all who replied.

stanthomas

DesWeller wrote:

DesWeller wrote:

5700 and 5600 are both 10-speed and have the same cable pull. I don't know where you are getting your information from but it's not a reliable source.

...
That's the brakes. Shimano slightly altered the MA for their brakes a few years ago, although in real terms I don't think it makes that much difference. Doesn't affect the shifting though.

Ok. Happy to stand corrected. All in favour of compatibility.

topdude wrote:

Update ... definitely the 5600 shifter not pulling enough cable every time.
Is this a common thing ?.

Shifters do wear out and it's common for the lever to fail to engage properly with the ratchet on the drum. But you would normally be able to 'feel' this because the resistance at the lever is noticeably less - it's not pulling any cable or moving the rear mech - until it 'catches'. If this is your problem then it's likely that the lever will soon give up altogether - no downshifts at all.

topdude

Hi, just to put this thread to rest the problem seems to be resolved now.
For anyone interested i tried,

Two different 5600 shifters
Two different rear mechs, Tiagra and 105
Several inner cables
Spent ages measuring cable pull at various points along the cable

Then removed my nice new "Jagwire silver braided" outers and fitted new bog standard black outers and instantly the shifting is perfect

The Jagwire outers look good but are going in the bin :?

Thanks to those who replied with suggestions.

dgunthor

glad you got it sorted, thanks for posting an update

keef66

dgunthor wrote:

glad you got it sorted, thanks for posting an update

+ 1, especially as I have a 5600 bike I was considering recabling with a Jagwire kit!