Thumb shifter conversion issues
01-16-12, 07:38 PM
#1
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Thread Starter
Thumb shifter conversion issues
I have recently converted two Friction shift road bikes to thumb shifters and more upright touring bars. The shifters are Sunrace SLM 10 (Red friction disc). They do not hold well, but they were also quite inexpensive. It seems to be a combination of flexing on the clamp, and the friction system. I am not thrilled about spending $100 or so on going to Silver, or some other type, but I will if I have to. I see Sunrace makes a nicer thumb shifter which is the SLM96 (see picture). It looks much more solid and better quality. Can't seem to find them except on their website though. Anyone know a source, or know about their performance? Anyone would like to share other solutions, Paul Thumbies?, Velo Orange clamps with Shimano levers? I am very interested.
Thanks,
Thanks,
Last edited by Gyro_T; 01-16-12 at 07:47 PM. Reason: add pic
01-16-12, 08:24 PM
#2
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Funny this thread should come up. For some reason, I started tucking the Old School metal thumb shifters aside, a few years ago. I have been meaning to get some pictures and tomorrow seems like a good time to do so, since I will have the camera out, anyway. For now, I know I have some Shimano, and a few sets of these two styles...
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01-16-12, 09:16 PM
#3
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I've got the SunTour Power Shifters with the ratcheting action- I really like those and I've also got a few sets of the Shimano Deore and DeoreXT thumbshifters. I love 'em.
If you're looking for new shifters... I don't think you're going to find inexpensive, new, quality, thumbshifters. The age of the thumbshifter ended around 1993. Grips and Triggers took over. Your choices for quality stuff is old stuff and pricey stuff.
If you're looking for new shifters... I don't think you're going to find inexpensive, new, quality, thumbshifters. The age of the thumbshifter ended around 1993. Grips and Triggers took over. Your choices for quality stuff is old stuff and pricey stuff.
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01-16-12, 09:51 PM
#4
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I installed Shimano 8 speed indexing bar end shifters on the VO thumb shifter mounts on the bike I built for my dad. They're great.
These early Deore friction shifters are pretty cool too.
These early Deore friction shifters are pretty cool too.
Last edited by ColonelJLloyd; 01-16-12 at 09:56 PM.
01-16-12, 11:27 PM
#6
Bike Sorceress
These are not too hard to find on older Huffy MTB's, and work great:
01-16-12, 11:51 PM
#7
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I like the older Suntours and they seem to work great on my Schwinn. I have not used the older Deores "Deerhead" models for very long but from what I understand they are very good.
01-17-12, 10:01 AM
#8
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Go vintage if you're looking for quality and affordability. You should be able to pick up some nice classy looking Shimano or Suntour on ebay for under $30.
01-17-12, 12:35 PM
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this is what I have total cheapies. I am not sure what you mean by not holding well, but I have had no problems with slipping out of desired gear. I am running this as a 1x8. The derailler is a deore xt. the cable set up is: cable with housing to cable stop on top of down tube. cable only from down stop to cable stop on chainstay then the at little loop of cable housing from the stop to the derailer.
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01-17-12, 12:59 PM
#10
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I keep looking at trying the DIY hackjob version where you mount dt shifters on clamps for I think mtb thumbies, doubt that helps you any though..
01-17-12, 01:42 PM
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I reused the thumb shifters when I put drops on my winter beater. I've found them to be wonderful companions to mitten or gloved hands. As a matter of fact, when Spring comes and the beater gets hung up....I miss the thumb shifters!
01-17-12, 07:22 PM
#12
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Ultegra 8 speed bar end shifters on some old Suntour mounts.
01-17-12, 10:58 PM
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if you can find one of this old Shimano 7 speeds sis, it can handle 8 speeds with proper indexing.
or go with Paul and a more modern Shimano bar end shifter. I find the Paul attachment screw for the right hand side shifter a little short and it can come loose.
or go with Paul and a more modern Shimano bar end shifter. I find the Paul attachment screw for the right hand side shifter a little short and it can come loose.
01-17-12, 11:10 PM
#14
Cheap 7 speed thumb shifters on amazon. https://www.amazon.com/Shimano-Handle...6863355&sr=8-2
01-18-12, 08:44 AM
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01-18-12, 10:05 AM
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Great idea.
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01-18-12, 11:32 AM
#17
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01-18-12, 11:36 AM
#18
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Please email me rather than PM'ing me. Thanks.
Tom Reingold, tom@noglider.com
New York City and High Falls, NY
Blogs: The Experienced Cyclist; noglider's ride blog
“When man invented the bicycle he reached the peak of his attainments.” — Elizabeth West, US author
Please email me rather than PM'ing me. Thanks.
01-18-12, 08:09 PM
#19
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Thread Starter
This is on a 28 tooth cog and a Suntour Cyclone rear derailleur. It is not hard to see why the lever has a hard time holding the chain and derailleur spring with the flex in those levers.
I appreciate all the input. I do not want indexed shifers. I don't know how a single lever index shifter works. But I will check out the 7 speed on ebay. I have some nice old Suntour DT shifters I might put on the VO thumb bar mounts. I am liking that idea a lot.
I appreciate all the input. I do not want indexed shifers. I don't know how a single lever index shifter works. But I will check out the 7 speed on ebay. I have some nice old Suntour DT shifters I might put on the VO thumb bar mounts. I am liking that idea a lot.
this is what I have total cheapies. I am not sure what you mean by not holding well, but I have had no problems with slipping out of desired gear. I am running this as a 1x8. The derailler is a deore xt. the cable set up is: cable with housing to cable stop on top of down tube. cable only from down stop to cable stop on chainstay then the at little loop of cable housing from the stop to the derailer.
