TSDZ2B with OSF Upgrade
Those drawn to the TSDZ2 usually come to it by searching “torque sensing mid-drive motor.” Until the CYC line of mid-drive motors came out, the TSDZ2 was the only game in town for torque sensing, which is its primary advantage over the Bafang mid-drive motors. With torque-sensing, the motor not only senses that you are pedaling but also senses how hard you are pedaling and can respond accordingly. It can feel very natural to have the ebike respond by magnifying your effort with motor power and not just put out a constant amount of power whenever you are pedaling as the Bafang motors do,
The TSDZ2 is also lighter than the BBS02. If you are trying to respect a lightweight bike and keep your electric conversion’s weight to a minimum, the TSDZ2 will help.
The TSDZ2 also comes in a coaster brake version. If you have a coaster brake bike, this is the only game in town. No other mid-drive or rear hub motors can work with a coaster brake. You could put a front hub motor on a coaster brake bike, but front hubs have their own issues. The TSDZ2 coaster brake motor opens up a lot of fun bikes to the possibility of an even more fun ebike.
One of the best-kept secrets regarding the TSDZ2 is the Open Source Firmware (OSF). Electrify Bike Co. collaborated with some excellent European engineers to replace the firmware in the TSDZ2 to accommodate many different bikes and riding styles. OSF replaces the factory firmware and extensively customizes how the motor responds. Those that like to fiddle and fine-tune the performance have a vast array of options with this firmware.
OSF performs very well right out of the box. Still, suppose you want to make adjustments like changing the power performance on each level or increasing the torque sensitivity. In that case, OSF gives you many configuration options to make it exactly how you want it.
The latest version of OSF also works well with the coaster brake version of the TSDZ2. It works much better than the stock firmware. As a result, we have decided only to sell the TSDZ2 with OSF. Eliminating the stock firmware streamlines our product offering and allows us to provide consistent support to all of our TSDZ2 customers.