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Questions tagged [downtube-shifter]

Shifter levers on the downtube of your bike frame.

3
votes
1answer
58 views

Problems with cheap housings

So, I converted my road bike from downtube shifters to STI brifters, and I noticed that the cable housings don't sit properly in the downtube cable stops, do you think that would be a problem ? EDIT:...
0
votes
1answer
73 views

Shimano downtube shifters 3x7 speed

I have an old road bike with 3x7 speed and STI levers. I need to downgrade it because I can't reach the levers due to my small hands. What downtube shifters can I buy to that will work with my ...
4
votes
1answer
833 views

Downtube shifters won't stay in low gear on rear derailleur

I've finished a bike restoration today and it's my first time using downtube shifters. They work and will span the full range of gears but won't stay in the big cog on the back for long, the shifter ...
2
votes
1answer
141 views

Question about Shifters

I have a bike with lever/downtube shifters. I hate them, feel like they don't stay in gear for more than 10 minutes at a time, and would prefer a bike that has preset gears. Is there a way to get the ...
3
votes
1answer
396 views

What are the steps required to revert from STI shifters to friction shifters?

I'm curious about trying friction shifters out for my commutes – especially since I had a shifter cable mishap recently that cost me a lot more time than it should have. My commuter is a '70s road ...
4
votes
1answer
631 views

Installing downtube shifters with no clamp

I am trying to convert my Schwinn Mountain bike into a road bike. I bought a set of Shimano SL-SY20A 3 (2) x 7 Speed Down-Tube Shifters. they have a clamp attached but my downtube is very wide and the ...
2
votes
1answer
424 views

Changing Campy index downtube shifters to 'only' do friction shifting

How do you change Campy down tube C-Record indexed shifters to be friction shifters? I don't like index shifters as they limit your options with the cassette you can use. Mine are Campagnolo Veloce.
8
votes
1answer
688 views

Different types of down tube shifter mounts

I wish to adapt down tube friction shifters to my frame. As shown in image 1, the frame is equipped with eyelets for this purpose. Image 1 My down tube Image 2 shows the shifter in question (I ...
3
votes
1answer
257 views

Preventing downtube cable stops from sliding out of place

I've got a vintage road bike with no braze-ons for shift cables: Instead, it's got a cable stop holding the cables against the downtube and parallel to the chainstays. Unfortunately, it seems to slide ...
5
votes
2answers
879 views

Friction-shift (rear) always changing up the gears

I have an old french touring bike (from the 70s or 80s) with downtube friction shifters. I recently had it serviced, and ever since there's been a constant pressure on the rear gears which means they ...
2
votes
1answer
186 views

shifting (hah!) from downtube to integrated shifters

My old racing bike has 1991-era Ultegra, but I have gradually accumulated a nearly complete set of Dura Ace 7402 (mostly new in box) and plan to upgrade the bike. 7402 was a transitional release and ...
6
votes
3answers
3k views

What's the strongest way to bond a cable stop to an aluminum frame?

I recently picked up another well loved GT road bike frame- it's in great shape aside from a missing downtube cable stop. The model is a ZR 4000 probably from 1999, it's 7005 heat treated aluminum. My ...
0
votes
1answer
161 views

I'm evaluating how to best match a new handset and rear wheel to a vintage rebuild [closed]

My first bike after move to Japan. Picked up an old 520 Cro-MO frame by Tsunoda - Grand Prix , minimal rust and decent paint. It had some old Suntour VX derailleurs, aluminum-far-too-narrow drop bar ...
0
votes
1answer
273 views

Ambidextrous backup downtube shifter for touring?

I'm heading out on a long tour soon on a bike with Shimano STI shifters. That choice was intentional as I don't like bar-ends. However, I notice the gear cables run through stops at downtube shifters ...
1
vote
2answers
2k views

Converting 80s bike to indexed shifters

I've just bought an early 80s steel framed bike with unindexed stem mounted shifters. As I plan to use the bike for commuting, I'd like to change the rear mech to use trigger shifters. I'm not so ...
2
votes
1answer
172 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
541 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
311 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
2k 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 D-...
3
votes
1answer
1k 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 ...
3
votes
1answer
786 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
2k 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
8k 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 ...
7
votes
3answers
4k 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
1k 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 ...
23
votes
7answers
65k 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 ...