Okay, so what's this thing?
03-29-14 | 11:46 PM
#1
Thread Starter
"Fred"--is that bad?
Joined: Apr 2008
Posts: 512
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From: 214 Represent!
Bikes: Felt f85 (11); Trek 7.3 FX (07); Schwinn Super Sport (86); Specialized Rockhopper (87)
Okay, so what's this thing?
I just bought an 80's Miami Vice themed Rockhopper. I was thinking it was going to be all friction shift, but the rear is indexed.
The thumb shifter for the rear has a 'lever' that will move a small amount front/back (it will move 1/2" or so?). The friction front shifter doesn't have it.
I don't notice any difference with it moved forward or backward.
What does it do?
The thumb shifter for the rear has a 'lever' that will move a small amount front/back (it will move 1/2" or so?). The friction front shifter doesn't have it.
I don't notice any difference with it moved forward or backward.
What does it do?
03-30-14 | 12:09 AM
#3
Thread Starter
"Fred"--is that bad?
Joined: Apr 2008
Posts: 512
Likes: 0
From: 214 Represent!
Bikes: Felt f85 (11); Trek 7.3 FX (07); Schwinn Super Sport (86); Specialized Rockhopper (87)
Just gave that a try--nothing changed. I wish that what it was though. That would be a genius feature!
Thanks for the very quick response.
Thanks for the very quick response.
Last edited by DTSCDS; 03-30-14 at 12:14 AM.
03-30-14 | 04:56 AM
#5
Senior Member
Joined: Nov 2013
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From: Near Pottstown, PA: 30 miles NW of Philadelphia
Bikes: 2 Trek Mtn, Cannondale R600 road, 6 vintage road bikes
We have this on an ancient Western Flyer mountain bike and, yes, it does work: changes the rear thumb shifter from indexed to friction. No need for it on the FD. I assume if the RD got wacked in the woods and indexing was outta business you could just switch to friction and get home AOK. Maybe a fix for a problem that didn't come up.
03-30-14 | 05:05 AM
#6
spondylitis.org
Joined: Mar 2013
Posts: 1,053
Likes: 128
From: Fleetwood, PA, USA
Bikes: '84 Colnago Super; '90 Bridgestone MB-1; '81 Trek 930; '01 Cinelli Supercorsa; '62 Ideor Asso; '87 Tommasini Super Prestige; '13 Lynskey R2300; '84 Serotta Nova Special; '94 Litespeed Catalyst; etc.
Assuming that's a Shimano thumbshifter, the lever switches between indexing and friction modes.
And as others have said, yours may or may not be working. Try it a few times before you write it off, though.
And as others have said, yours may or may not be working. Try it a few times before you write it off, though.
03-30-14 | 08:03 AM
#7
feros ferio
Joined: Jul 2000
Posts: 22,413
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From: www.ci.encinitas.ca.us
Bikes: 1959 Capo Modell Campagnolo; 1960 Capo Sieger (2); 1962 Carlton Franco Suisse; 1970 Peugeot UO-8; 1982 Bianchi Campione d'Italia; 1988 Schwinn Project KOM-10;
Does it always run indexed or friction? In the latter case, your index detents have gotten messed up. This is no big loss -- I always run my SunTour thumb shifter in friction mode, anyway, which allowed me to change rear wheels from a SunTour 7-speed freewheel to a Shimano 8-speed cassette.
__________________
"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069
"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069
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