i just got an inpred frame…it can gear cables stait from the shifter to the mech with one outer…which is sumthing i wanna do…but how much outer do i buy. its a 16inch frame

i think 1m 20-30cm iirc for my rear cable, i allways get a little more than i need every time.

Simonk

and the front?

Google Shimano SP41, and get 10m worth…..!

http://www.parker-international.co.uk/5084/Shimano-SP41-Outer-Casing-4mm-x-10m.html?referrer=froogle&utm_source=google&utm_medium=froogle&utm_campaign=pid5084

I bought the nice looking Fibrax stuff off CRC £5 each with inners for my 18" inbred, it comes in the perfect length for the rear using a shaddow mech or a bit too short for a normal mech, but as I added cable oilers I could use the offcut from the front one to make it right.

Invest or borrow some cable cutters as you wont be able to order 2 lengths pre cut as far as I know.

But full length cables last ages and its not worth spending loads as they stay smooth for ages anyhow.

I use Aligator cables from Clee Cyles on mine.
Nice silver braid and goes well with the Hope braided Hydro hose. Youll need 2 sets to do an inbread though as these cables are designed to be split between cable stops and run the inner sheath between them. If you`re acurate with your cutting you can manage a fair amount of spare for future use.
They work really well though.