My motor has a D shape shaft and my pulley aswell this mean I just I just need to screw it in place in order to avoid sliding along the shaft.
At the moment I have it without a screw and it actually slides itself to stay adjusted with the wheel pulley.
What are your thoughts about it? Should I really tight it? I’ve rode it around 20km without problems. I think it makes less stress and friction as it adjust itself at the best position.