Broken index->friction selector wire loop, any tips?
12-07-12 | 01:04 PM
#1
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rain dog
Joined: Oct 2009
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From: Northern PA
Broken index->friction selector wire loop, any tips?
Picked up a bike recently that has these Shimano 600 downtube shifters:
https://www.velobase.com/ViewComponen...=104&AbsPos=15
Unfortunately, that wire loop that is used to change it from index to friction is missing and it's stuck in index mode. Turning the center screw just allows me to remove the shifter, but doesn't affect the index->friction selection.
Anybody deal with this before and have any tips?
https://www.velobase.com/ViewComponen...=104&AbsPos=15
Unfortunately, that wire loop that is used to change it from index to friction is missing and it's stuck in index mode. Turning the center screw just allows me to remove the shifter, but doesn't affect the index->friction selection.
Anybody deal with this before and have any tips?
12-07-12 | 02:08 PM
#2
Bianchi Goddess
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From: Shady Pines Retirement Fort Wayne, In
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Ask around at the bikeshops in your area and see if they have any old broke shimano shifters. You should be able to glean that D ring from most any shimano shifter.
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“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk
12-07-12 | 02:35 PM
#4
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Something positive once you get it set back to friction: if you're running friction so that you can use something other than Shimano 6-speed, then no one will be able to flip the switch and foul up your shifting when you're not looking. 
12-07-12 | 03:15 PM
#5
Ride, Wrench, Swap, Race
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From: Northern California
Bikes: Cheltenham-Pedersen racer, Boulder F/S Paris-Roubaix, Varsity racer, '52 Christophe, '62 Continental, '92 Merckx, '75 Limongi, '76 Presto, '72 Gitane SC, '71 Schwinn SS, etc.
The wire is very hard stuff, so I would try to source one perhaps from a quick-release skewer nut if it can be made to fit.
It would be easy to file a couple of flats on the selector ring, and I recall seeing index shifters that were thus machined from the factory.
Perhaps a circlip plier could be made to engage the holes??? I would lube the shifter up first, then perhaps ply the shop mechanic with beer to get him/her to have a go at this(?). There is usually a hole in the back side of the shifter that is the best entry for some light lubricant (might make the ring easier to turn).
If cosmetics are of no concern, I would grip the ring on the mounted shifter with a pair of Vice-Grips, pushing in hard with the tool head-first to effect some purchase through wedging-action. This often works on various types of tapered-head, tamper-proof fasteners. Don't slip and ding you downtube though!!!!!!!!!!!!
It would be easy to file a couple of flats on the selector ring, and I recall seeing index shifters that were thus machined from the factory.
Perhaps a circlip plier could be made to engage the holes??? I would lube the shifter up first, then perhaps ply the shop mechanic with beer to get him/her to have a go at this(?). There is usually a hole in the back side of the shifter that is the best entry for some light lubricant (might make the ring easier to turn).
If cosmetics are of no concern, I would grip the ring on the mounted shifter with a pair of Vice-Grips, pushing in hard with the tool head-first to effect some purchase through wedging-action. This often works on various types of tapered-head, tamper-proof fasteners. Don't slip and ding you downtube though!!!!!!!!!!!!
12-07-12 | 04:18 PM
#6
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Confirmed! Fifteen minutes with a wire cutter, vice, pliers and an old spoke produced a D-ring. The form isn't perfect (I could probably do much better a 2nd time) but it is functional. It fits the holes perfectly and is stiff enough to allow me change the settings.
12-07-12 | 04:24 PM
#7
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From: Northern California
Bikes: Cheltenham-Pedersen racer, Boulder F/S Paris-Roubaix, Varsity racer, '52 Christophe, '62 Continental, '92 Merckx, '75 Limongi, '76 Presto, '72 Gitane SC, '71 Schwinn SS, etc.
Good work there, but btw didn't the selector ring on yours already have the wrench flats (looks like they are there at each of the two hole positions)???
Did you have to use a black spoke?
Did you have to use a black spoke?
12-07-12 | 04:38 PM
#8
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12-07-12 | 05:05 PM
#9
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12-07-12 | 06:49 PM
#10
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rain dog
Joined: Oct 2009
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From: Northern PA
Yes, there are flats. I took the OEM D-ring off mine just to show it could be done. I used a black spoke to prove to the naysayers that it actually was something I had fabricated. If I had gotten the form a little better, a stainless spoke may have looked too much like the OEM D-ring.
12-08-12 | 07:04 PM
#11
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Yes, there are flats. I took the OEM D-ring off mine just to show it could be done. I used a black spoke to prove to the naysayers that it actually was something I had fabricated. If I had gotten the form a little better, a stainless spoke may have looked too much like the OEM D-ring.
Just sayin.....
I have a D-ring, but it's not from that type of shifter. You can have it.
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