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Shimano 6501 left shifter help requested

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Shimano 6501 left shifter help requested

Old 04-14-19, 03:05 PM
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Shimano 6501 left shifter help requested

Worked fine for the double chainring.
Changed to a triple chainring set up.
When adjusted for the small chainring per ParkTool video, the front derailleur outer cage rubs on the chain.
When I adjust the barrel adjuster for no chain rub, the derailleur won't shift to the smallest chainring.
What are some possible solutions, beside using a different shifter?
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Old 04-14-19, 08:58 PM
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I believe you need a 6503 brifter for triple CW and what you have is a double CW brifter which does not have that extra throw needed for a triple.....
I suppose you could grind off a little of the FD body where it swings against the Hi-Lo stops if you had a dremel and a small enough cutter.
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Old 04-14-19, 10:07 PM
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No need to grind on the Ultegra front derailleur, the high-low stops are adjustment screws.
Could the 6501 shifter be disassembled and some grinding occur to increase the throw?
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Old 04-14-19, 10:12 PM
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Is the cable properly routed over the anchor bolt washer's nub? Andy
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Old 04-15-19, 07:34 AM
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Yes. From BikeWagon

Shimano Ultegra ST-6501 STI Left Shifter Lever 2/3-Speed Silver

Whether you are new to the sport or an avid cyclist, Shimano parts have you covered. Built to last, designed by bike enthusiast, this Shimano Ultegra ST-6501 Left Shifter Lever is an excellent upgrade for your bike. Shimano parts take you the distance.
  • Can be used with double or triple cranksets
  • Speeds: 2/3
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Old 04-15-19, 09:42 AM
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sch
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Looking at the Shimano lit ( https://www.manualslib.com/manual/12...o-St-6510.html )
the 6503 # I was recalling was referring to the FD not the brifter which apparently was one of those
usable for double or triple CW setups. So maybe the problem really is the throw of the FD. Brifter is
styled 6510. The adjustment screws on the FD bear against parts of the FD body casting. I was suggesting
a bit of metal removal from the FD body to increase the range of motion. You could back out the screws
completely, disconnect the cable and manually push the FD from one extreme to the other with respect to the CW and see what
coverage range is possible. If it won't go far enough you will need to modify the FD or get a 6503 variant.
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Old 04-15-19, 11:40 AM
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Opening up the FD limit screws will allow the chain to drop off both the big & small chainring if the cable were able to allow that much travel.
FD travel limit is not the problem.
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Old 04-15-19, 06:49 PM
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All 6500 left shifters were triple compatible. You need the triple 6503 FD for proper shifting on all 3 rings however
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