Gripshifter with Road Derailleurs.

[Racer X]

Just changed the shifting bits on my gripshifters and after looking at the internals I reckon I could get a 10th gear in there with a bit o tinkering. Question, does anyone know whether the Sram road derailleurs use the same 2:1 ratio that the MTB ones use.

 

At present my only major prob is the lack of cassette choices, obviously a 11 - 28/29 is my best bet.

Racer X2008-08-17 07:11:04

[Speedi]

i like how you spell derailleur!

[HammerHed]

Sram MTB derailleurs are 1:1, which makes for much less tinkering with the gear.

[dylankeyter]

Please keep us updated with your project RacerX 

[Racer X]

Thanks  Dylan and HammerHead. Speedi stop showing your age.

[Racer X]

Right so after hours of taking the damn thing apart and then puting it back together I finally managed to get my tenth gear cut into the shifter. Now all I need is a 10 speed cassette with 29 teeth or more. I wonder if I'll get a 10 speed cassette onto a 9speed freehub body.

[Racer X]

Oh yeah there is enough movement in my X.9 to accomdate 10 clicks, will try get some pics up tonight when the the camera returns.

[turtlek]

good luck with the project sounds good

[Dirtbreath]

Not to knock it, but why do you want 10 speeds? Are you still running 3 chain rings? Do you actually need the gears or is it just to see if you can?

 

Saw a Giant MTB that had a Campag 10 speed installed. They used the triggers off a Campag touring bike. This bike had been run like this for over a year with no problems.

[dylankeyter]

Pictures please! 

[GoLefty!!]

RacerX, the shift ratio on SRAM ESP deraileurs is not exactly one to 1:1 but closer to 1:1.2 The road derailleurs are slightly different again with a Shift ratio of 1:1.4.

Shimano is about 1: 1.8(something)

 

You may find ot difficult to get the indexing working correctly.

 

You could order a 10s DoubleTap Trigger shifter for city bikes and fit a 12-27 SRAM Road 10S cassette with the 10s Long Cage rear derailleur.

That should give you a working and reliable 30speed system.

[Racer X]

 

Not to knock it' date=' but why do you want 10 speeds? Are you still running 3 chain rings? Do you actually need the gears or is it just to see if you can?

 

Saw a Giant MTB that had a Campag 10 speed installed. They used the triggers off a Campag touring bike. This bike had been run like this for over a year with no problems.

[/quote']

 

Just wanted to, why not. Yeah I've seen the Chorus hybrid shifters though I think you can only use V-brakes with them.

 

Only run 2 rings up front 32:44

 

[javadude]

You get 2 versions of the Chorus shifter, for Caliper or V brakes, but at $400 for a set they are a bit ridiculous. You also need a specific front derailleur for them as well.

[Racer X]

 

RacerX' date=' the shift ratio on SRAM ESP deraileurs is not exactly one to 1:1 but closer to 1:1.2 The road derailleurs are slightly different again with a Shift ratio of 1:1.4.

Shimano is about 1: 1.8(something)

 

You may find ot difficult to get the indexing working correctly.

 

You could order a 10s DoubleTap Trigger shifter for city bikes and fit a 12-27 SRAM Road 10S cassette with the 10s Long Cage rear derailleur.

That should give you a working and reliable 30speed system.

[/quote']

 

 

 

Thanks GoLefty, been bashing my head all morning trying to figure out why I said 2:1.

 

Where did you get those figures, its very interesting how the exact ratio was worked out.

 

The indexing is working pretty well, I managed to carve another gear in the shifter, will post pics later.

 

When I have the money I probably go for a 12-29 Token cassette.

 

Triggers, what u smoking. Gripshift or else I'll convert to road full time.

[Racer X]

 

You get 2 versions of the Chorus shifter' date=' for Caliper or V brakes, but at $400 for a set they are a bit ridiculous. You also need a specific front derailleur for them as well.

[/quote']

 

Never going back to V's. I like stopping thanks, what F.derailleur are you talking about?

 

[javadude]

 

You get 2 versions of the Chorus shifter' date=' for Caliper or V brakes, but at $400 for a set they are a bit ridiculous. You also need a specific front derailleur for them as well.

[/quote']

 

Never going back to V's. I like stopping thanks, what F.derailleur are you talking about?

 

Not sure. According to Jenson website:

• Requires flat bar compatible front derailleur
• Compatible only with Campagnolo rear derailleurs
• Front shifter works with double or triple chainring
• Brake levers are compatible with Campagnolo road caliper brakes
• Includes cables, housing
• Left Shifter
• Color: Black
• FD/Shifter Compatibility: Campy Flat Bar Double
• Brake Lever Actuation: Short Pull
• Brake Lever Use: Left
• Intended Use: Road
• Right Shifter
• Color: Black
• Shifter/Rear Derailleur: Campagnolo
• Brake Lever Actuation: Short Pull
• Brake Lever Use: Right
• Intended Use: Road
• Drivetrain Spacing: Campagnolo 10

Nice looking though: