Seems like TQ systems have a long history. They debuted the drive systems back during the 2010 Eurobike.
Drives that look similar to TQ systems PIN drive have been around for sometime. Looks like
@Mikey- , and
@Timpo were not sure about the connection!
Here is a co-axial motor from E-prodigy.
https://electricbikeaction.com/bike-test-eprodigy-logan/
and the motor cutout for the co-axial motor.
While the E-prodigy bike is quite nice, a slightly detuned version of that has been used by Optibike on their Allroad models.
https://optibike.com/pioneer-allroad-limited/
TQ systems have a uniquely patented PIN drive. I haven't studied this in detail but I did experience first hand back in 2014 when I tested the Spitzing models. They were most impressive when it came to power.
and here is the cut out of the TQ systems drive.
Actually, in this video, they briefly mention the difference between the cycloidal gear boxes, planetary gear boxes and harmonic gear boxes.
There is a much bigger DIY supplier by name Cyclone that has similar co-axial motor like the E-prodigy but can be run at 72V for incredible power. I have seen people rave about it but I am not sure of their reliability. I had a friend who sold his Optibike and got a Haibike because the motor kept failing.
Cyclone motors are quite famous among the DIY crowd but they can be PIA to install and maintain.
http://www.cyclone-tw.com/
co-axial motor
and the 3000w DIY motor
They are not going to be efficient drive systems like the Brose, Bosch or the Shimano but they do offer massive power and I expect the range will be lower. But, of course, Haibike has their own programming and the bigger 630whr battery to compensate for the extra power requirements. The sensors, controller programming and the power delivery will be the factors that may separate TQ+ Haibike combo from the rest of the crowd. They will be quite a bit refined.
Only time will tell, how this drive systems will be received by the market but I am quite optimistic.
These motors offer tremendous power and can eat the drivetrain quite bad but I am sure Haibike has toned down the power ramp up to ensure these things don't happen.
So glad Haibike is pushing things forward and exciting to see a new tech on the horizon.