power torque ultra torque???????
 

So i bought a campagnolo chrous groupset(10s power torque), turns out the crank is a Italian thread and my frame is enlgish(the cup is bigger than my frame). I am think of getting a english bb cup on ebay.
Question is will the bearing on my crank works for a english cup?
Does using ultra torque cup matters? The ultra and power torque cup looks identical.
thank you:(

Power torque cranks did not exist when Chorus was 10 speed. If you have power torque cranks, they are not Chorus, all Chorus cranks for 11 speed drivetrains are ultra torque, not power torque. Bottom bracket cups for power torque are not the same as ultra torque cups. I have 10 speed Chorus ultra torque cranks on one of my bikes. They only made 10 speed Chorus with ultra torque cranks for a couple of years before they switched to 11 speed

for power torque cranks you must use a power torque bb, they are different

I am sorry, mine is actually a centaur 10s group with power torque. My question so will the bearing on my crank fit the new english bb?

you need a power torque bb

PT systems have the right-side bearing pressed onto the BB spindle. The left-side bearing comes with the left BB cup. This is distinct from UT systems that have both left and right-side bearings pressed onto the two BB spindle halves and the BB cups are san bearings. Thus, as someone has stated, UT cups != PT cups.

Nevertheless, in either PT or UT, the crank and bearings are BB shell threading-agnostic. The difference lies in the BB shell interface. You can just get a PT English BB cup set and you'll be done.