d8veh said:
Any controller that has an LCD and at least 5 levels also gives very nice pedal assist. The advantage of a torque sensor isn't really enough to justify the expense, complexity and limitations.
Depends on how they designed the levels of PAS: there's 7 IIRC on the Fusin kit I've got, and I can't say I'm satisfied with how it works, regardless of settings, and it's lag for startup and shutdown when I start/stop pedalling is way too long. Needs to be instant, but that's not really possible with so few (5?) magnets--it would really have to use a continous ring magnet and an analog sensor like SIN/COS encoders use to get the kind of control I'd be after.
As I have yet to get the CAv3 fixed and setup with the THUN (laziness, money, and too many intervening events), I don't know how well it will work for me either, but I expect based on functional description and options in the CA that it will do exactly what I want.
As for how hard it is to setup, well, I think that Teklektik's UUG for the CAv3 should make it pretty easy for anyone to setup if they just follow the exact steps in it for what they want to do. So software setup is not that complex, and should be worth the extra effort to get the right settings, vs how at least some other PAS setups work.
Setting up the hardware itself could require tools most people won't have, because of taking out their old BB, so yeah that part is more complex than some PAS would be--but if the PAS sensor itself on a kit has to have it's bracket clamped under the BB locking ring, then that's no different--it may still require tools they won't have. (or misusing other tools for the purpose, risking damage to things).