From The Currie Tech Dealer Wiki
PAS activates when rider pedals backward
A common assembly issue; If, in PAS mode, the motor activates only when the rider pedals backward, the PAS sensor ring on the bottom bracket must be flipped.
PAS not operational
Other things to check:
- Is the PAS button/toggle switch working? See: Non-Specific_Bicycle_Components#PAS.2FTAG_switch_testing
- Does PAS work when the crank is spun backward? See Common issues#PAS activates when rider pedals backward
- Is the fixed sensor ring damaged or disconnected?
There is sometimes a small amount of play between the battery and rack in RTMB systems. Because of this, customers may experience rattling noises coming from the rear of the bike when riding over bumpy terrain. The best way we've found to solve this is with self-adhesive vecro loop "dots," applied strategically to both wedge the battery in place and to dampen any rattling noise. Dots are being included with all affected bicycles, but extras can be found at any hardware store. Currie uses dots from McMaster-Carr (part # 9736K311).
Grinding noise from drivetrain
The Tricruiser transfers power from the motor and pedals to the wheel using three chains. The tension of these chains is adjustable, and proper tension is necessary to ensure that the trike operates as efficiently as possible and that it does not prematurely wear out due to poor adjustment. Please see the Tricruiser assembly guide for reference. Generally, chain tension should be such that the chain allows about 1cm of up/down play, but use best judgement in finding a point where the chain neither binds nor falls off the cogs during use.
Bike feels sluggish, or excessive pedaling force is required to activate motor
Things to check:
- First and foremost, the rider must understand that the TMM sensor self-calibrates each and every time the power is turned on. The controller sets a "zero point" based on the amount of force being applied to the torque sensor as the power button is pressed, and bases all future measurements from that point. Do not turn the bike on while in motion, or with any weight applied to the pedals.
The best practice for powering up a TMM bike is:
- Sit on the bike on a flat surface, balancing with feet on the ground.
- Press the "ON/OFF" button and wait for the initialization sequence to finish (a few seconds) before riding the bike.