Cannondale brifter stuck?
09-26-21, 05:22 PM
#26
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New condition flightdeck?...that's probably 15 years old or more. Ultegra 9sp, I'm guessing.
Odd that they would be new condition.
Undo the cable pinch bolt at the rear derailleur so the cable is slack. See if the shifter then clicks without any tension. That is always my 1st step to determining what's wrong.
If it clicks as it should, then you know the shifter is fine and the issue is elsewhere(cables, housing, rear derailleur). If the shifter doesn't click as it should, you know the issue lies with it.
Odd that they would be new condition.
Undo the cable pinch bolt at the rear derailleur so the cable is slack. See if the shifter then clicks without any tension. That is always my 1st step to determining what's wrong.
If it clicks as it should, then you know the shifter is fine and the issue is elsewhere(cables, housing, rear derailleur). If the shifter doesn't click as it should, you know the issue lies with it.
From a quick search it might be.
Edited to add: The best we can figure is it is about 4-5 years old.
Last edited by pepperbelly; 09-26-21 at 05:35 PM.
09-26-21, 05:39 PM
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I can feel the cable tighten when I try to move it but the derailleur itself doesn’t move.
There may be some debris in it that I can’t see.
I will look again tomorrow in sunlight. If it isn’t something obvious I will take it to the bike shop. The rear derailleur was dusty inside.
There may be some debris in it that I can’t see.
I will look again tomorrow in sunlight. If it isn’t something obvious I will take it to the bike shop. The rear derailleur was dusty inside.
09-26-21, 07:01 PM
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Regardless, post some pics of the bike and components.
if the shifter does click and the derailleur doesn't move, then the cable is too loose. The clicking is the shifter taking up excess cable.
09-26-21, 07:22 PM
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I thought flightdeck died off once Ultegra 6700 was introduced back in '08 or '09 Apparently it wasn't killed off then.
Regardless, post some pics of the bike and components.
if the shifter does click and the derailleur doesn't move, then the cable is too loose. The clicking is the shifter taking up excess cable.
Regardless, post some pics of the bike and components.
if the shifter does click and the derailleur doesn't move, then the cable is too loose. The clicking is the shifter taking up excess cable.
Tonight I also noticed the front derailleur isn’t moving either.
It sat for a couple of years in a garage. He cut wood in there so there may be debris in the derailleurs. I will try blowing them out in the morning.
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09-26-21, 08:00 PM
#31
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Shouldn't this thread be moved to the 'Early Brifter Bikes - 7,8, and 9 speed subforum?
Which brings me to another question. I know there's no such thing as a brifter, but isn't there really no such thing as a 7 speed brifter?
Which brings me to another question. I know there's no such thing as a brifter, but isn't there really no such thing as a 7 speed brifter?
09-26-21, 09:08 PM
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I think RX100 came in 7spd with brifters for a while. Before it was replaced with Tiagra.
09-26-21, 09:15 PM
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09-27-21, 07:54 AM
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pepperbelly Shimano st-6500 shifters are serviceable. Go to YouTube and you'll see videos on the method. It's detailed work, but not impossible for those who are mechanically inclined. Untape the handlbar to just beyond the shifter mount, loosen the rear derailleur cable fixing bolt, and fully disconnect the shifter at its 5mm clamp mount. Remove the shifter and then you can begin looking at the internals. Use isopropyl alcohol to ease off the hood, don't tear it.
Then get to work. Take photos before you disassemble each step. This is not brain surgery.
Then get to work. Take photos before you disassemble each step. This is not brain surgery.
Last edited by Phil_gretz; 09-27-21 at 08:17 AM.
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09-27-21, 09:10 AM
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09-27-21, 09:18 AM
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New signature line test.
09-27-21, 09:29 AM
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Undo the pinch bolt so the cable is released from the derailleur and its a lot easier to determine. You can then figure out if its the shifter or not.
The derailleur should easily pivot with pressure once the cable is released. if it doesnt, then its damaged/broken.
The derailleur should easily pivot with pressure once the cable is released. if it doesnt, then its damaged/broken.
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09-27-21, 11:52 AM
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^This, real simple test. If the derailleur moves freely move on. Now with the cable disconnected from the derailleur see if it moves freely in the housing as you click through the positions on the shifter. Obviously in one direction you'll need to pull on the cable end to make sure it's moving in the right direction
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09-27-21, 12:24 PM
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Possibly could be that it was adjusted to that max movement of the cable jams the derailleur up against it's stop, then the tension in the cable is kind of 'locking' the mechanism in side the shifter. Releasing the cable from the derailleur pinch bolt will determine, as said above.
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10-01-21, 04:57 PM
#47
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The mechanic at the bike shop said the issue is with the shifter itself. He said it works but might have a problem now and then.
If it starts causing issues I will change them both.
If it starts causing issues I will change them both.
10-01-21, 05:27 PM
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clean the shifter...
here... same post I just made in similar thread, here in General Dis...
was specific for 6700s, but true for all Shimano Brifters (and possibly other brands as well... I wouldn;t know about that...)
"Cleaninig, cleaning, cleaning.
Shifters get gummed/gunked up after some time...
Take shifter off , remove hood, get a can of WD 40, spray the hell out of the entire internal mechs.. concentrate on the return spring area...
allow shifter to drain - do it again....
let shifter dry before installing again.
you will cause no harm.
you may resolve it completely...
You can check before re-installing - put a cable thru, use vise or step on cable, do long lever shift 'up', put tension on cable, short lever shift down... see how it feels/works/
The Brifters (6700) I have on my Marin Treviso came from a guy who said they no longer 'worked'... same issue, stuck and when operating very unreliable...
I've now had them for 8+ years, have had 25K miles in that time... work a charm !!! when they get a little funky - I'll clean them again...
I've cleaned 5 other shimano brifters the same fashion... all still functioning...
can't hurt, give it a try..." /post
some bike techs are like car mechs, 'it's easier to replace than to repair..." and more rewarding money wise...
Ride On
Yuri
10-01-21, 09:36 PM
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^This^. Shimano shifters nearly never break. The oem grease gets sticky and the ratchet won't release. You don't even need to remove the hood or take them off the bars. I've always done it on the bike. Spray some WD in there and shift them a bunch...they almost always work again after a bit of work. Sometimes right away, sometimes takes a while...don't give up too soon. Any bike shop mechanic that doesn't know this should turn in their tools.
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