Front gear shifter question
#1
Senior Member
Thread Starter
Join Date: Feb 2017
Posts: 89
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 35 Post(s)
Liked 0 Times
in
0 Posts
Front gear shifter question
i was just cleaning up my garage and saw my old bike i used along time that is a 7 speeder.i was wondering why is there 8 shifts/clicks on the front gears if there is just 3 gears?
#2
Senior Member
Join Date: Aug 2005
Location: Pittsburgh, PA
Posts: 33,656
Bikes: '96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '20 Surly Midnight Special, All are 3x10. It is hilly around here!
Mentioned: 39 Post(s)
Tagged: 0 Thread(s)
Quoted: 2026 Post(s)
Likes: 0
Liked 1,095 Times
in
741 Posts
What drivetrain make and model?
#3
Senior Member
Join Date: Nov 2014
Location: Eugene, Oregon, USA
Posts: 27,547
Mentioned: 217 Post(s)
Tagged: 0 Thread(s)
Quoted: 18349 Post(s)
Liked 4,502 Times
in
3,346 Posts
Your front shifter is often designed so that you can do some fine tuning (trimming). So, as you shift the rear from small to large, if the front starts rubbing, give one more or less click.
It also allows easier compatibility between components.
It also allows easier compatibility between components.
#4
Senior Member
Join Date: Feb 2012
Location: Rochester, NY
Posts: 18,056
Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Mongoose Tomac ATB, GT Bravado ATB, JCP Folder, Stewart 650B ATB
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4195 Post(s)
Liked 3,837 Times
in
2,295 Posts
Agreed that lack of greater detail prevents a best answer. But CliffordK gives a possible one. Andy
__________________
AndrewRStewart
AndrewRStewart
#5
Senior Member
The fact that it has 8 clicks is just an artifact of how it was constructed. The idea would be the same if it had 20 clicks, or 100 clicks, or if it moved continuously with no clicks.
Modern shifters are usually "indexed", meaning that individual clicks correspond to individual gears. However, a few decades ago, nearly all derailleur drivetrains were non-indexed like your front shifting. This is called "friction shifting", and it was even used for rear shifting.