Installing pas sensor no lock nut

Nealh

Esteemed Pedelecer
Aug 7, 2014
21,018
8,589
61
West Sx RH
There will be a flange on the chainring side of the BB to retain the sensor ring, as the thread is a RH one from that side so it is fitted from that side.
If the BB and cranks were Isis, Hollowtech or GXP type then you could fit on any side.
 
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vfr400

Esteemed Pedelecer
Jun 12, 2011
9,822
3,993
Basildon
You can unscrew the bottom bracket a couple of turns to make enough thread for the retaining ring, which you can buy on Ebay for 99p. You will most likely have to flip the magnet disc when you put it on that side. You can grind off up to 3mm from the inside of the pedal arm if there's not enough room for the magnet disc,
 
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ldc

Pedelecer
Jun 2, 2020
58
4
You can unscrew the bottom bracket a couple of turns to make enough thread for the retaining ring, which you can buy on Ebay for 99p. You will most likely have to flip the magnet disc when you put it on that side. You can grind off up to 3mm from the inside of the pedal arm if there's not enough room for the magnet disc,
thank you