Too much tension in rear derailer cable or s***** Brifter?
04-26-12, 10:38 PM
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Too much tension in rear derailer cable or s***** Brifter?
Hello all,
I am having problems with my Shimano RX 100 brifters. I recently alligned my rear derailer. I find that although shifting down gears is fine, as soon as I try to shift up a gear it skips all cogs and goes to the upper limit(smallest rear cog), set by the limit screw. Does anyone have any advice? I think it may be too much tension in the cable but am not sure.
Any help would be greatly appreciated thankyou.
I am having problems with my Shimano RX 100 brifters. I recently alligned my rear derailer. I find that although shifting down gears is fine, as soon as I try to shift up a gear it skips all cogs and goes to the upper limit(smallest rear cog), set by the limit screw. Does anyone have any advice? I think it may be too much tension in the cable but am not sure.
Any help would be greatly appreciated thankyou.
04-27-12, 08:48 AM
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Dried grease, dirt or rust is binding the mechanism and the little springs aren't strong enough to overcome it. Though WD-40 inflames many on this forum, it or something like it is perfect for this job. .Spray it in and work the levers back and forth to loosen everything, then flush once more and let it dry
Dried grease, dirt or rust is binding the mechanism and the little springs aren't strong enough to overcome it. Though WD-40 inflames many on this forum, it or something like it is perfect for this job. .Spray it in and work the levers back and forth to loosen everything, then flush once more and let it dry
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An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
04-27-12, 05:03 PM
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I have flushed the mechanism a few times with wd 40. Will try again today. I have read that pulling apart the brifter is a no no. However if it come to it will changing the spring help? Or should I use a specialized lubricant be the first course of action. Is there a non - discontinued shimano brifter which I can replace the rx100 with?
04-29-12, 04:27 AM
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Ok i have talked to a few people and read a bunch. Flushing it didn't work because the ratchet tooth was broken. The most common cause is the gunking up of components from under use, rust and dirt. The best thing to do for anyone else who has this problem is to degrease(not with wd40) over a period of a day while moving the components from time to time. THen make sure you re lubricate as well or thing will start falling apart.
As for me I dont want to give up on the Rx 100 STI and components are no longer produced by shimano, so, if anyone has an old RX 100 or 105 7 speed right hand shifter please let me know and I will make you an offer. Many thanks to everyone who took the time to respond and have a read of the problem at hand.
Happy hunting.
As for me I dont want to give up on the Rx 100 STI and components are no longer produced by shimano, so, if anyone has an old RX 100 or 105 7 speed right hand shifter please let me know and I will make you an offer. Many thanks to everyone who took the time to respond and have a read of the problem at hand.
Happy hunting.
04-29-12, 08:53 AM
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As for me I dont want to give up on the Rx 100 STI and components are no longer produced by shimano, so, if anyone has an old RX 100 or 105 7 speed right hand shifter please let me know and I will make you an offer. Many thanks to everyone who took the time to respond and have a read of the problem at hand.
Happy hunting.
https://stores.ebay.com/eeforme?_rdc=1
He may do repairs; I'm not sure. See his FB page "Shimano STI Shifter Repair"
https://www.facebook.com/pages/Shiman...r/137062087082
Dunno if he'll take your old brifters in trade or not.
Hope this helps.
-TH
04-29-12, 11:00 AM
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If I was you I'd read the writing on the wall and get some proper brifters.
You can make Campy brifters work with your Shimano derailleur with a Shiftmate. Alternatively, 8spd Campy brifters and a matching rear derailleur will shift your 7spd cassette perfectly, since it's the same 5mm spacing.
Not sure if there's a Shiftmate for SRAM, but then I'm not sure either how superior Doubletap is to STI.
IMO it's plain as day that Ergo is vastly mechanically superior to STI, and the new hidden cable STI is doubtless an even more horrendously complex rat's nest of bent and pressed steel plate. Yuck.
Bona fides: I've overhauled (complete disassembly) STI and Ergo, and for the record, IMO Shimano stuff is generally better* - except when it comes to brifters.
*Not ultimately better - Campy is porn and SRAM is light, but better in an all-things-considered, average scenario kinda way.
You can make Campy brifters work with your Shimano derailleur with a Shiftmate. Alternatively, 8spd Campy brifters and a matching rear derailleur will shift your 7spd cassette perfectly, since it's the same 5mm spacing.
Not sure if there's a Shiftmate for SRAM, but then I'm not sure either how superior Doubletap is to STI.
IMO it's plain as day that Ergo is vastly mechanically superior to STI, and the new hidden cable STI is doubtless an even more horrendously complex rat's nest of bent and pressed steel plate. Yuck.
Bona fides: I've overhauled (complete disassembly) STI and Ergo, and for the record, IMO Shimano stuff is generally better* - except when it comes to brifters.
*Not ultimately better - Campy is porn and SRAM is light, but better in an all-things-considered, average scenario kinda way.
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Sheldon Brown's bike info ~~~ Park Tools repair help
Half-step triple, using double gear ~~~ 6400 STI rebuild walkthrough ~~~ Want 8/9/10s @126mm OLD? OCR. ~~~ Shimano cassette body overhaul ~~~ Ergopower Escape wear repair ~~~ PSA: drivetrain wear
List of US/Canada bike co-ops ~~~ Global list
Sheldon Brown's bike info ~~~ Park Tools repair help
Half-step triple, using double gear ~~~ 6400 STI rebuild walkthrough ~~~ Want 8/9/10s @126mm OLD? OCR. ~~~ Shimano cassette body overhaul ~~~ Ergopower Escape wear repair ~~~ PSA: drivetrain wear
List of US/Canada bike co-ops ~~~ Global list
Last edited by Kimmo; 04-29-12 at 11:06 AM.
04-29-12, 02:15 PM
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Some bf member had two pairs of those for sale recently in one of the for sale fora.
Link- https://www.bikeforums.net/showthread...5-STI-shifters
Link- https://www.bikeforums.net/showthread...5-STI-shifters
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Shimano : Click :: Campy : Snap :: SRAM : Bang
Shimano : Click :: Campy : Snap :: SRAM : Bang
05-02-12, 07:15 PM
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I've got an RSX 7 speed pair in the basement. They worked fine when I took them off to put on Ultegra a few years ago. PM me if you want to make an offer.
