dx shifters - indexed?

[Btypark]

Hi folks

I've just fitted some old school integrated (sti) shifters and was hoping they would be indexed but it seems not. I have to feel my way through the rear sprockets rather than click and go. Is this normal for this age of shifter (1990)?

If so I'm happy to keep them but if there is something wrong with them it would be good to know :?

 

[legrandefromage]

They are indexed but the grease can hard and bugger up the shifting.

The DX sti is a sealed unit and not as easy to flush as later models.


This model?

although not exact, the DX are similar to these internally. This shows you the indexing and the pawls that stop working properly due to the thick grease and sometimes corrosion from damp storage.

They are not my favourite shifter but the left hand one has multiple clicks which was great for front mech positioning/ chainline/ chain rub

 

[Neil]

Hi folks

I've just fitted some old school integrated (sti) shifters and was hoping they would be indexed but it seems not. I have to feel my way through the rear sprockets rather than click and go. Is this normal for this age of shifter (1990)?

If so I'm happy to keep them but if there is something wrong with them it would be good to know :?

Do you mean like these:-



If so, they are indexed, but I suppose the internal grease may have gummed them up. Never happened on mine, though, I have a couple of sets (well DX and XT, and the XT ones look and feel identical).

Do the normal, first - check cables and adjustment, and see how the unit behaves with no cable tension - does it work as you'd expect with no tension on the cables?

 

[Btypark]

Re:

That's the fella's! Although they look a little more battle worn to be fair. I remember opening up similar shifters when I were just a lad and had the horror of springs and tiny parts flying off into the grass never to be found again! Twenty years later I wonder whether it would be wise to try this again in a more controlled environment, i.e, my shed!
There is no clicking/indexing at all on the rear mech shifter and it requires a lot of pushing to shift up no matter how loose the cable. Sounds like hardened grease as you all say?
Any advice on how to rectify this sensibly given that I'll have a few hours on a Sunday afternoon to do it, wife and kids permitting!

 

[legrandefromage]

Theres not much you can do for those - I've tried to refurbish a few but if the sealed part doesnt want to play, you are better off looking for another set.

You can try soaking them in some thin oil for a while so it breaks the crap down. They were never that great in the first place and the slightly later 'push /pull' ST-m95 version feels better - they were pretty much the blue-print for sti for the next 15 years at least.

 

[Btypark]

Re:

That sounds less than positive as a diagnosis I'll look into treating myself to a new set. Can't remember whether removing the cables is straightforward on these shifters? Will I need new cables too? Anyone got a spare set they would like to sell me?

 

[legrandefromage]

cable access is through a small flap on the side, mine are missing.

Early Altus STi bolt straight on but are not as easy to find but replacement XT are quite common. Later STI has a different mounting so wont fit without a modification

BR-AT20. ST-M520, ST-AT10, ST-M560 (which I've never seen in the flesh!) all fit

Catalogue from which just about every ST seemed to use the same mount for about 6 months before being dumped for a whole new fit/ design

 

[Btypark]

Re:

Aha! I'd be foolish not to treat myself to the XT's Do you know what the model number would be? M900?

 

[legrandefromage]

1993 model year catalog

M900 is 8spd

M95 is 7

http://www.retrobike.co.uk/gallery2/v/M ... gues/1993/

 

[Btypark]

Re:

Nice one - thanks for that. Not many out there for sale that I can see. I'll have to develop some patience!