Originally Posted by rustamd  everything is just MHO
1. & 2. Set screw should be ok. I maybe would grind small flat on the shaft for set screw. One screw on flat and another 90* away should be more than enough, bu i suppose 3 will not hurt.
3. This will depend on how many tooth the pulleys are, i believe there is recomended number of teeth that should be in contact with belt at all times. But if enough teeth will be in contact, i would think it would be ok.
4. 8mm pitch HTD belt should be good. Mayne difference between belts are amount of backlash and tooth profile(i think). HTD shouldnt have much backlash. |
Thnk you rustamd, I have a 1:3 reduction , meaning a 20 teeth pulley and another 60 teeth one!