External BB cups on '80s steel

cubedean

I'm wanting to run a modern campag chainset on my 1985 Gios, is there anything i need to be weary of? It currently runs a dura-ace 7400 chainset using a square taper BB.

Obviously Italian threads but is there anything else i need to check first?

cycleclinic

Nope it will work just buy cups for a 70mm shell.

ugo.santalucia

Any reason to replace a top of the range chainset which is still light even by modern standard with something that will last less and do exactly the same job?

PS: If they are the 7410 cranks, I might be interested in them

nicklouse

If you do change to external bearings do get the BB shell faced to get the max life from the bearings.

Which will still only be a fraction of the life if a decent square taper BB set up.

cubedean

ugo.santalucia wrote:

Any reason to replace a top of the range chainset which is still light even by modern standard with something that will last less and do exactly the same job?

PS: If they are the 7410 cranks, I might be interested in them

I want to run compact gearing which obviously I can't do with these.

They are CS 7402.

cycleclinic

Try FC-7402 CS is for cassettes!

I have a set of FC-7410 cranks and they are so lovely and light. Persoanlly I would train more so you can turn the higher gear. I used a 41T inner ring ona 5km 11%+ climb with a 27T rear sprocket. It has hard but doable. The 7402 is susch a nice piece of kit you would refret changin it.

Also you could run a stronglight impact double chainset in 50/34T they take a square taper BB but a shorter axle than the 7402.