Downtube Shifter Help
08-17-11, 03:04 PM
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Downtube Shifter Help
I would like to mount a pair of Shimano 600 tri-color downtube shifters but the frame has no brazed-on bosses, how can I make this happen?
08-17-11, 04:22 PM
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I don't think the shape of the post or boss is quite right. shimano did at one time make a clamp for these shifters. you need to get a pic of one and start checking bike shops.
this is the clamp but there special backing peices for these. I am not sure if the standard concave style will work.
https://cgi.ebay.com/SHIMANO-DOWNTUBE...item1c1e1f5f4d
jB4qBOSZo3y4Sg~~60_3.JPG)
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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"
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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
08-17-11, 04:22 PM
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Not a problem if you can find a Shimano shift lever boss to solder on - If you go with a standard lever that fits the campy type boss you just silver solder on the boss using a jewelry torch and regular silver solder and flux used for soldering copper pipe plumbing - Yes this works - And yes it is strong enough to do the job - Follow the links for a little ore info...
Problem with shift lever boss: https://www.bikeforums.net/showthread...pes?highlight=
Regular Campy boss and other things to silver solder on see ART 296: https://www.framebuilding.com/Bosses.htm
Fairly good Chicom torch: https://www.harborfreight.com/micro-torch-42099.html
Soldering: https://www.youtube.com/watch?v=RwKdM...eature=related
Problem with shift lever boss: https://www.bikeforums.net/showthread...pes?highlight=
Regular Campy boss and other things to silver solder on see ART 296: https://www.framebuilding.com/Bosses.htm
Fairly good Chicom torch: https://www.harborfreight.com/micro-torch-42099.html
Soldering: https://www.youtube.com/watch?v=RwKdM...eature=related
08-17-11, 04:24 PM
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AH HA!! this is it. if you don't grab it I just might have to scoop it up for the spares bin
https://cgi.ebay.com/SHIMANO-vintage-...item3cbb0958a7
the backing plates of course adapt the shimano shifter to the boss, but that funky cutting on the edge adapt the backing plate to the clamp.
https://cgi.ebay.com/SHIMANO-vintage-...item3cbb0958a7
the backing plates of course adapt the shimano shifter to the boss, but that funky cutting on the edge adapt the backing plate to the clamp.
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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
“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
08-17-11, 04:25 PM
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This is the one you need.
https://cgi.ebay.com/DOWNTUBE-SHIFTER...item27b88b30b5
or you can snag the one Bianchigirl posted as I was making this post
https://cgi.ebay.com/DOWNTUBE-SHIFTER...item27b88b30b5
or you can snag the one Bianchigirl posted as I was making this post
08-17-11, 04:37 PM
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AH HA!! this is it. if you don't grab it I just might have to scoop it up for the spares bin
https://cgi.ebay.com/SHIMANO-vintage-...item3cbb0958a7
the backing plates of course adapt the shimano shifter to the boss, but that funky cutting on the edge adapt the backing plate to the clamp.
https://cgi.ebay.com/SHIMANO-vintage-...item3cbb0958a7
the backing plates of course adapt the shimano shifter to the boss, but that funky cutting on the edge adapt the backing plate to the clamp.
BG..... I was looking at that one and wondered if it would work. Do you know for sure?
08-17-11, 04:50 PM
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Capecodder I am 99.99% certain that is the dealio you need. if it doesn't fit I'll buy it from you.
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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
“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
08-17-11, 06:32 PM
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Rats - Are there or is there a braze on boss of this type...
If so it must really be elusive...
If so it must really be elusive...
08-17-11, 06:47 PM
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Heres an interesting post on these shifters on a standard boss...
https://www.bicycles.net.au/forums/vi...p?f=28&t=39974
https://www.bicycles.net.au/forums/vi...p?f=28&t=39974
08-17-11, 07:18 PM
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I've got one of those clamps on my Schwinn. The bike I got it from had some paint damage where the bezels hit the tube, so I smoothed the back edge of them a tiny bit with a file.
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