mtb cable discs with road sti

[cyberknight]

I will soon be doing a conversion to drop bar on my subway , i know i need to change the front derailleur to a road mech , does anyone know the clamp size i would need ? and could i get away with a double as i dont use the granny ring or should i go for a triple ?
I have some triple shifters on order .
The brakes are tektro cable discs , would i need brake travel adaptors to make them pull the right amount of cable?

 

[Nibor]

you most probably will as most MTB cable disc brakes are designed to work with V Brake levers which pul significantly more cable than road STIs

 

[martint235]

I'm not sure. I have BB7 disc brakes on the commuter with standard Tiagra STI levers and they work ok.

 

[Unimaginative]

Avid make two types of BB7; standard BB7 for v-brake pull and BB7R for road lever pull. If your bike came with BB7s and road levers then they'll most likely be BB7R's.

 

[cyberknight]

Avid make two types of BB7; standard BB7 for v-brake pull and BB7R for road lever pull. If your bike came with BB7s and road levers then they'll most likely be BB7R's.

It currently has road shifters/levers with tektro novella cable discs.

 

[lpretro1]

You will need the triple or it won't shift onto the big ring. Measure the diameter of the seat tube to establish what width of FD band you require.