So how to install this PAS? Is it even possible?

1. You can get a locking ring from a bike shop or off an old type BB.
http://www.ebay.co.uk/itm/Replacement-Bike-Bottom-Bracket-Crank-Cup-Lock-Ring-/180814075127?pt=UK_sportsleisure_cycling_bikeparts_SR&var=&hash=item2a195bd4f7
Unscrew your LH Bottom bracket a couple of threads; slide the sensor bracket over it and lock it in place with the locking ring.

2. You can remove the sensor from its ring bracket and make your own bracket, which you can glue or fix with a zip-tie:


3. It's designed to go on the right-hand side behind the chain-wheel. The BB on that side has a flange to retain it.

If you fit it on the left side, you have to flip the magnet disk so that it effectively runs in the opposite direction otherwise it'll only work when you pedal backwards.
 
yep just change that sid with one with a ridge on it. my fat bike bb came with one with no ridge and just swapped it with one
 
Thanks for the replies, I'll have to modify the magnet disc, the bb spindle diameter is 24mm and the disc is designed for square taper.. Probably just find a gigantic drill and drill it out..?
 
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