Front Mech for a TA Cyclotourist triple

[Tommy27]

Will look into the Suntour Cyclone front derailleuras well then.

What rings are you running @non-fixie ?

 

[non-fixie]

Will look into the Suntour Cyclone front derailleuras well then.

What rings are you running @non-fixie ?

52-42-32 T.A. rings.

 

[Tommy27]

Ok, I'm currently running 46/ 30 on a 14- 34 block, should look into gear ratios to be honest to look for a similar range.

I want something a little lower to allow for climbing on gravel/ rough stuff during the warmer and drier months, while having a slightly higher "big gear"

 

[non-fixie]

One other thing you may want to look into with that kind of gearing is the rear mech you need for it to be able to shift to all combinations without too much compromise.

I recently bought a rather nice 52/42/28 Gipiemme triple chain set, and with a 14-34 block I will need something that can handle the 34T cog and a 44T chain wrap. I will probably try a Shimano RD-M550, which Shimano says will handle a 32T max cog and wrap 38 teeth of chain. As Shimano is reported to be somewhat conservative with its specifications I **may** just get away with it.

 

[Tommy27]

I've a Shimano 600 Arabesque, which is supposed to go up to 34t. Though that said my current block is a modern 10 spd and what with a triple and friction, I probably won't be running that and will probably go to 8spd at most to avoid over taxing things too much?

 

[bikeworkshop]

One other thing you may want to look into with that kind of gearing is the rear mech you need for it to be able to shift to all combinations without too much compromise.

I recently bought a rather nice 52/42/28 Gipiemme triple chain set, and with a 14-34 block I will need something that can handle the 34T cog and a 44T chain wrap. I will probably try a Shimano RD-M550, which Shimano says will handle a 32T max cog and wrap 38 teeth of chain. As Shimano is reported to be somewhat conservative with its specifications I **may** just get away with it.

View attachment 907018

I think that 38-44 difference in wrap means you'll be dragging chain some riders live with it.

 

[non-fixie]

I think that 38-44 difference in wrap means you'll be dragging chain some riders live with it.

Very probably. But since I don't plan to spend much time in the small-small combinations anyway, it it's a small price to pay for a 22 - 100 inch gear range.

That said, I really don't need that high a top end, so I may end up looking for another set of outer rings with a 3-tooth difference to do some experimenting with half-step gearing.

 

[sjcprojects]

I have a related Stronglight triple issue with a FD. In my case a Campagnolo Record FD works fine in terms of having enough travel, and it doesn't foul the crank-arm (I'm using a Stronglight asymmetric BB axle designed for a triple) - BUT for it to shift over onto the big ring, the shifter has to go ALL the way back so that it's parallel with the ground. Obviously this is not really ideal, but for the right about of cable to be pulled, this is the only way it will do it.

I'm guessing a Suntour Cyclone or similar would solve this, but it wouldn't really look the part on a 60s bike, so it sounds like a Simplex is the only option? And as mentioned, those are rather silly money...

 

[non-fixie]

I have a related Stronglight triple issue with a FD. In my case a Campagnolo Record FD works fine in terms of having enough travel, and it doesn't foul the crank-arm (I'm using a Stronglight asymmetric BB axle designed for a triple) - BUT for it to shift over onto the big ring, the shifter has to go ALL the way back so that it's parallel with the ground. Obviously this is not really ideal, but for the right about of cable to be pulled, this is the only way it will do it.

I'm guessing a Suntour Cyclone or similar would solve this, but it wouldn't really look the part on a 60s bike, so it sounds like a Simplex is the only option? And as mentioned, those are rather silly money...

Another not-too-intrusive option is to slip a bit of outer cable liner (or similar) over the shifter cable where it runs over the shifter barrel. This will effectively increase the barrel's diameter a bit, resulting in more cable pull.

It might give you just the extra bit of pull you need.

 

[Tommy27]

Yeah the Campag Front mech on my Jack Taylor Tandem works well with a TA 50, 40, 30 and a wide range 5 speed block at the back.

I don't know what mech it is though, guessing not a Super Record. But then the Tandem is surprisingly light and does have quite a number of high end parts on it, mixed with some more utilititarian. There's a Rally derailleur at the back though and Campag down tube shifters.

Looking through a book I've got on classic French builders, there's a lot of Huret Derailleurs from the 60s onwards, but I don't know which ones?