Odd TOP PUSH shimano deore dx front derailleur

[ChipW]

On an old Trek 8000. Any idea what model this is? Tips on getting it adjusted properly? It is funky - has the cable attached to a bolt on the seat tube/BB

 

[legrandefromage]

its a normal mech with an extra bit added. it uses the cable outer for its push/ pull

 

[Tootyred]

M650 band on? Shold be stamped on the rear of the cage.

 

[bikeworkshop]

Iirc its a normal front mech, with an adapter kit to enable toptube routing without using the little wheel - which was what the frame boss was fitted for - to which the cable end is now attached.
One of my colleagues remembers fitting these to bikes new .

Tbh it wasn't much cop, the wheel is probably better:
Less outer to crush, and the force is applied as designed by shimano.

But it's an interesting piece of history - so you'll just have to live with it.