Locking Thumb Shifter?
04-14-26 | 01:22 PM
#1
Thread Starter
Amateur Member
Joined: Mar 2021
Posts: 5,112
Likes: 8,483
From: SoCal
Bikes: Cuevas & Cimmaron are my full time riders, small MB-3 and large Competition GS are my sometimers
Locking Thumb Shifter?
Anyone know who made these? or what the purpose of a locking shifter is?
https://offerup.com/item/detail/f824...e-6937c1b025a3
https://offerup.com/item/detail/f824...e-6937c1b025a3
04-14-26 | 01:44 PM
#2
Senior Member
Joined: Jun 2009
Posts: 597
Likes: 301
From: Brooklyn, NY
Bikes: 1970s Coppi/Fiorelli beater, 1973 Raleigh Competition, 1972 Bob Jackson, 1970 Cilo Sprint-X, 1985 Fuji Touring Series IV, 1969 Legnano Roma
maybe similar to the portacatena lockout available on campy downtube shifters for a hot minute?
04-14-26 | 02:31 PM
#3
Bikes are okay, I guess.
Joined: Jan 2015
Posts: 8,005
Likes: 3,770
From: Richmond, Virginia
Bikes: Waterford Paramount Touring, Raleigh Sports 3-speeds in M23 & L23, Schwinn Cimarron oddball build, Marin Palisades Trail dropbar conversion, Nishiki Cresta GT, Jeunet mixte
For a dropper seatpost perhaps?
04-14-26 | 03:08 PM
#5
Senior Member
Joined: Dec 2016
Posts: 2,921
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From: Long Island, NY
Bikes: Trek 800 x 2, Schwinn Heavy Duti, Schwinn Traveler, Schwinn Le Tour Luxe, Schwinn Continental, Cannondale M400 and Lambert, Schwinn Super Sport
Perhaps this is not intended for bicycles since handle bars for many things are close to the same size. But even with broadening the thinking, I'm still at a loss.
Perhaps to set the throttle on a small boat or machine?
Perhaps to set the throttle on a small boat or machine?
04-14-26 | 03:27 PM
#6
Senior Member
Joined: Feb 2014
Posts: 1,541
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From: Fort Collins, CO
Bikes: 1974 Paramount ~ 1974 Raleigh Pro ~ 1977 Pro-Tour ~ 1978 TX900 ~ IronMan 85,87:E/M,88:M/Pro,89:E ~ 98 Peugeot Festina Replica
Its for a Mountain bike suspension fork, locks out the fork from the handlebars.
