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2
votes
1answer
71 views

Unknown shifter mount

This screw goes thru the frame (downtube) to hold two shimano 7speed (indexed) shifters. Apparently, one of the bolts is screwed and needs to be replaced. Problem is that the guy who owns the bike ...
1
vote
0answers
100 views

Shift lever and boss (mount point) compatibility matrix

I've looked online, but haven't found one. Is there any sort of "matrix" available that puts shift lever boss type on one axis and shift lever on the other, and remarks on each pair's compatibility? ...
1
vote
1answer
123 views

How can I stop my shifters slipping when climbing?

I'm having trouble with my rear mech and/or shifters. Under heavy load (say, when climbing) the rear mech is slipping. The two photos below show my shifters before and after a climb. I've not touched ...
0
votes
1answer
464 views

Downtube friction shifters for 11 speed

I'm planning to build a steel lugged frame and equip it with downtube friction shifting. My question is: Do Dura Ace 7900 downtube shifters come with friction mode? The left lever does not have a ...
2
votes
1answer
285 views

Can I use friction shifters with a clutch style rear derailleur?

Can I use friction shifters with a clutch style rear derailleur like the 2014 Shimano Deore M615 Shadow Plus? Or does this put extra tension on the shift cable that will cause slips with a friction ...
2
votes
0answers
170 views

Change the angle of the arc of downtube / stem shifter lever to make it an alternative thumb shifter?

I want to mount the following SunRace clamp-on shifter set horizontally as a "thumb" shifter on a straight MTB handlebar (22.2mm). I will remove the left lever and only use the right with the clamp. ...
2
votes
1answer
573 views

Can I run a SRAM road rear derailleur with downtube shifters?

Can I run a SRAM road (apex/rival/force/red) rear derailleur with downtube shifters? I though you might be able to mount the bar-end shifters on downtube, but it seems like they are a ratcheting ...
3
votes
1answer
4k views

Installing downtube shifters on a bike with no bosses or cable stops

Following up on the same bike as my previous question, we were able to get it cleaned up an running very well at the end of last summer. My brother has been riding it for a few months now and the ...
3
votes
3answers
2k views

Does it matter which cassette I get for downtube friction shifters?

My grandpa gave me his old 1974 Raleigh International (all original Campy) as a graduation present. Since the stock wheels are for tubular tires, and I do want to ride it around town, I want to get ...
3
votes
2answers
698 views

New stem, bars & shifters on old Bridgestone 700

I recently bought a 1980's Bridgestone 700. I have trouble feeling confident on this bike between the narrow drop bars and the downtube shifter. This is my all-steel commuter and I'd like to put ...
12
votes
6answers
18k views

How do I efficiently shift gears on a road bike with downtube shifters?

I have bought a vintage Campagnolo road bike, so the shifters are on the down tube. I own a mountain bike and i am used to changing gears on that one, but don't know the proper technique to change on ...