Shimano Trigger shifter

[cricklewood_graeme]

I recently saw a 7 speed trigger shifter on a bike which caught my attention as I need to replace my 15 yr old trigger which is falling apart. It looked like the 8 speed one which you can view at http://www.wiggle.co.uk/p/cycle/7/Shima ... 360014575/

I believe the Shimano 7 speed version code is ST 7S20 but I can't find it anywhere on the net. Does anyone know whether it is still available?

[Tonyf33]

I recently saw a 7 speed trigger shifter on a bike which caught my attention as I need to replace my 15 yr old trigger which is falling apart. It looked like the 8 speed one which you can view at http://www.wiggle.co.uk/p/cycle/7/Shima ... 360014575/

I believe the Shimano 7 speed version code is ST 7S20 but I can't find it anywhere on the net. Does anyone know whether it is still available?

The part you are looking for I believe is this one http://www.madison.co.uk/productinfo.as ... f=STT300PA

What purpose do you need the shifter for? Is it specifically for a hub geared bike? Or do you have a derailleur type with cantilever or v-type brakes?

Cantilever/single pivot/dual pivot compatible integrated levers are very hard to find these days. V-Brake types with integrated shifter are very easy to find second hand but here's a new examplehttp://cgi.ebay.co.uk/Shimano-EZ ... 5ad99f3aa3 & http://cgi.ebay.co.uk/SHIMANO-RAPID-FIR ... 335d20f7c8

You could also buy a 7 speed shifter pod on its own for very little money(£9 posted) http://cgi.ebay.co.uk/Shimano-Thumb-Shi ... 439f94b198

[cricklewood_graeme]

Thanks for your comprehensive reply Tony. My LBS informs me that the shifter I was looking at was phased out some time ago due to problems with it. I am not sure about that as I see the 8 gear version which looks identical, still being marketed by Wiggle. The Nexave system you pointed me to looks more robust than the ST 7S20. My setup is cantilevered brakes and 7 speed derailleur and I gather that limits me. Yes I could just buy separate shifters but my brake levers are knackered as well hence the idea of buying neatness with a combi system.

[AndyK]

Be careful though... I'm pretty sure the Nexave lever Tony points to is designed for use with "low-normal" rear derailleurs. That means that the spring on the rear derailleur pulls it inwards (towards the biggest ring/lowest gear) rather than (as with most rear mechs) outwards. Unless your current rear mech is low-normal (and I doubt it is if it's 15 years old) then you'll need to budget for a new Nexave rear mech to match the levers.

And even then, the Nexave lever is designed for V-brakes, not cantilevers. It might do the job (opinions vary) but you might find yourself needing to upgrade the brakes as well!

Incidentally, the Nexus 8-speed lever you pointed to is designed for use with hub gears - it won't work with a derailleur anyway.

[Tonyf33]

Graeme I found the Nexave cheaper here http://www.petracycles.co.uk/stt300-nex ... 12646.html

And even then, the Nexave lever is designed for V-brakes, not cantilevers. It might do the job (opinions vary) but you might find yourself needing to upgrade the brakes as well!

No that's not correct, Shimano specifically state that this is for cantilever AND V-brake, you just change the position of the brake cable puller see tech docs http://techdocs.shimano.com/media/techd ... 605559.PDF

[Tonyf33]

Even better, apparently the modified ST-EF50 has both the v-brake & cantilever position. These aren't readily available in the UK but I found a right 7 speed one for £20 posted from france http://cgi.ebay.co.uk/Manette-levier-fr ... 255a758d70

[AndyK]

Graeme I found the Nexave cheaper here http://www.petracycles.co.uk/stt300-nex ... 12646.html

And even then, the Nexave lever is designed for V-brakes, not cantilevers. It might do the job (opinions vary) but you might find yourself needing to upgrade the brakes as well!

No that's not correct, Shimano specifically state that this is for cantilever AND V-brake, you just change the position of the brake cable puller see tech docs http://techdocs.shimano.com/media/techd ... 605559.PDF

I stand corrected. I was looking at the tech sheets for the lever itself - they don't mention any adjustment device.