I have a craftsman 9hp 27" snowblower. It can barely keep up with the wet snow on the slowest speed, it keeps pushing and spilling over on the clean side. Can I change pulley sizes to get the auger to spin faster?
If I understand right now, the pulleys provide a mechanical advantage. Increasing the auger speed will decrease the torque available and may result in bogging down in wet snow. HP is torque times RPM, you have a fixed amount of HP, so higher speed equals less torque. It's why you have to downshift on a steep hill. You'll be right back where you started. Maybe you need a lower travel speed in the heavy stuff.