ahilito

Hi guys,

I'm completely new here, so excuses if I'm posting in the wrong section or anything.
I've already referred to this older thread but couldn't get any info to help: https://www.bikeforums.net/archive/in.../t-687361.html

I'm running a Shimano Ultegra 10-speed groupset. The front derailleur isn't even getting close to getting onto the outter cog (double chain-ring). The limit screw doesn't seem to get any movement at all. I've tried so much different stuff, so I'm on the verge of packing it in and going to a bike shop. This derailleur is brand new, could it be something to do with how I've got the cable in the brake-shifter?

It has full movement when I push the brake-shifter, but when it clicks in it's pretty far off the outer cog, though the change is substantial. It all seems fine apart from the stuff explained above.

Any help will be very very much appreciated.

Ahil

gw280

Did you take out the slack in the derailleur wire before clamping it down?

Take a look at this video which should be very similar to your setup if you're running 6700: https://www.pbkblog.com/shimano-dura-...on-video/2009/

ahilito

hey thanks for that video. You mean the pulling on the cable he does around 10.40, right? Yeah, I hadn't been doing that. But I've tried it a couple times just now and it still isn't helping. I notice he's holding the cable in place with his fingers. I wonder if I need to try with some pliers? I think I did that when I first installed the derailleur and it worked back then.

Psimet2001 

Put down the pliers and step away from the bicycle.

It's not that hard. The limit screw determines how far out the derail can move. The cable tension causes the derail to move out that far. the two together make the derail work correctly.

hao

your cable is too slack.

ahilito

yeah fair enough it is simple.

But regardless my high limit screw isn't getting any movement and the derailleur does need to be tensioned for the high limit to be adjusted right?

gw280

The cable itself is used to pull the derailleur out towards the big chainring. If the tension in the cable isn't high enough, it doesn't move out far enough. The high limit serves to move the derailleur the other way, i.e. it adjusts the high limit back towards the small chainring.

milkbaby

https://www.parktool.com/blog/repair-...ur-adjustments

The HL screw isn't supposed to move (unless you're using a screwdriver on it at the time); if it does, it won't be doing it's job properly. It's like a parking lot bumper, just an obstacle that part of the derailleur hits and keeps it from moving too far and throwing your chain off. Technically, you don't need any cable tension to set the high limit as you can push the cage over all the way by hand until it hits the screw and eyeball that it won't throw the chain over the outside of the big chainring...

ErichM

I always just set the low limit with the cable detached, then attach it with the shifter set on the low ring, pull it tight with my hand and set the high limit. If you have barrel adjusters then you can take the slack out of the cable with those, if not you can set the low limit screw a bit off where it should be so when you back it off it puts tension on the cable.

Anyway, check out park tool's website as linked to above, it has all the info you need.

Edit: When I say slack I mean a little bit of slack, you do need to attach the cable so the cable is fairly taut.

ahilito

sorry, I explained myself really poorly there. I mean my HL Screw isn't getting any movement out of the derailleur at all (not closer in or further out).
But I think what you're saying there makes things a bit clearer to me.

Thanks a lot for the links etc guys, I'll get back to it

Ansir

Its hard to see the movement on the high gear, I usually shift or push on the derailleur towards the big ring to get it seated in the new position.

Use your barrel adjusters for the fine tuning and if it gets to hard to downshift u have 2 much tension.