Cranksets of this format are usually described as ‘compact’ and almost always supplied with a 50/34T chainring combination. Many riders are quite happy with this and look for nothing different.
We thought InfoCrank riders would be looking for more, so also offer the new ‘mid-compact’ 52/36T chainring set—as big as most riders outside the professional set will want to run.
We did ask Praxis, our chainring suppliers, about offering a 53T chainring as an option, but they didn’t think this was a good idea. In their view, a very strong rider using a 53T ring on a 110 BCD crank would be too risky.
So as part of our forward planning, we’re already designing an InfoCrank to the 130 mm BCD ‘racing’ standard. We’ve named it InfoCrank Classic and it will have 53/39T chainrings. Customers will be able to utilize other rings of this standard if they wish—some TT riders like to go up to 54/55T on the big ring.
Our upcoming Classic crank differs in design from the original InfoCrank and is fabricated in a different factory, but in one vital respect it is identical—power measurement, which remains within our strict tolerances.
That means if you have InfoCrank on one bike and InfoCrank Classic on another, your two torque measurement readings will be within 0.25 nm of each other.
Put it simply, your WATTS are WATTS (not WHATS?).
* BCD stands for ‘bolt circle diameter’.