|Record 10 Ergo shifter glitch||gibbons|
Nov 14, 2002 4:54 PM
|I put some new Record 10 Ergo shifters on my bike, upgrading from some crashed Chorus. It shifts fine up to first gear, the derailleur is adjusted properly on cog alignment and travel. When I shift from first gear to second, I have to push the thumb once and nothing happens. On the second push, it "catches" and shifts.
Is this a break-in, time will heal kind of thing, or do I have a defective shifter?
By the way, I am new to this forum, and have noticed a little friction between the Campy and Shimano gangs. I have Shimano XTR on my mountain bike, so I have both. If you guys want to fight about brands, take it outside :)
Nov 14, 2002 5:27 PM
|I guess by first gear you mean the largest cog? What you describe in not proper and won't go away on it's own.
First, be sure that the upper derailleur pulley is not rubbing on the largest cog. An overlap of the pulley and cog could keep it from shifting. If there is rubbing, there is a screw that can be adjusted and should cure this problem. See the derailleur instructions for the location of this screw. On Record derailleurs it's no longer in plain sight, like shimano's "B" screw. If adjusting this screw does not eliminate the cog and pulley overlap, shortening the chain by one inch may be required. This may pull the derailleur forward enough to eliminate the interference. If this isn't the problem, try one of the following possibilities.
Slowly shift down to the smallest cog and be sure that there is not a "leftover" click, after the smallest cog. If there is, that's the problem. The cure is to tighten the derailleur cable.
If that's not the problem, try backing out the derailleur limit screw that keeps the derailleur from shifting past the largest cog. It's possible that you could barely be getting to the last click and the shifter gets hung up in the largest cog.
If that's not the problem, I would suspect a cable friction problem, except that it would show up on other shifts to smaller cogs, not just the first one.
It could be a defective shifter. The first Record 10 speed shifter that I owned always produced a weak click when shifting up from the smallest cog, and started skipping past the 14 tooth cog after 2000 miles of use. Sent it back for a free repair (which took 3 months). Even Campy parts aren't always perfect.
Nov 14, 2002 6:01 PM
|While you're not clear about what constitutes 1st gear (smallest or largest), the general advice when you're having problems at the end of the range is to re-initialize the system. Shift all the way to the smallest cog by punching the mouse-ear repeatedly (keep going past the bottom gear). Screw the barrel adjusters pretty much all the way in. Remove the cable and make sure your limit screws are set right. Re-attach the cable, take up the slack, and then start shifting through the range. Fine tune the cable tension, and it should all be good. If you've got a kink in the casing, no lube on the cable, or a frayed wire, this could be the problem too.|
|re: Record 10 Ergo shifter glitch||gibbons|
Nov 14, 2002 7:30 PM
|First things first, I define first gear as the biggest cog in the rear, easiest ratio like cars, lathes, etc.
The shifter's indexes are pefectly calibrated with the gears, there is no "jingling" from being off. It shifts perfectly into the big cog (where it has trouble shifting out). Once in first, the top jockey pulley is directly below the cog, but there is a tiny bit of "float" play towards the spokes. Once shifted and the lever is relaxed, the derailleur move a titch away from the spokes and centers up nicely. The "b-screw" is set right.
I used teflon grease on the cables when putting the new levers on. I have noticed that if I give the cable a tug with my hand, it doesn't need the double stab, it just goes right in with one punch.
By the way, thanks for the suggestions.
|Warranty work: 1st Position Pawl is not engaging||Spunout|
Nov 15, 2002 7:43 AM
|I would try to work this more, keep shifting around that top cog. Maybe some lighter lubrication?
Pulling the cable sounds like it is engaging the pawl in the downshift mechanism, so that is where it is stiff.
|Warranty work: 1st Position Pawl is not engaging||nelson|
Nov 15, 2002 9:11 AM
|It's possible the cable housing is not seated completely in the lever.|
|re: if you mean the largest rear cog = #1 cog||ThirtyFive|
Nov 15, 2002 6:49 PM
|my first guess is insufficient cable tension. if the cable is slack at all (or even just barely tight) the first click will just take up the slack but not move the derailer. when installing a new cable, i screw in all of the cable stops, pull the cable tight as i can by hand, and then unscrew the cable stops (both) 1/2 way to tension the cable. then i adjust. for me, skipping the tensioning always produces the behavior you describe|| |