So those black perforated circle at the bottom of the router are air inlets? Or an inlet and an outlet? The PowerPro motor appears to draw air through the motor by a centrifugal fan but I haven't looked carefully at it enough to say that's all there is to it. I wonder if there's enough space between the pulley and the motor for an inlet shroud, and I don't know if the fan can maintain positive airflow in the rest of the headstock sufficient to keep sawdust out. I also wonder how well the motor cools at low speeds since the fan is limited to spindle RPM.RFGuy wrote: ↑Thu Sep 29, 2022 4:17 pm P.S. Related to the PowerPro cooling thread a while back, I still wonder if there isn't some way to implement something similar to what JessEm has on this router for a fresh air inlet/outlet to the StriaTech motor inside of the PowerPro headstock. IF it is a TEFC motor then it is just a matter of getting fresh, clean air to that motor fan, i.e. no additional cooling would be needed (passive solution) - just let the existing fan do the work.
In general though, designing a system from the ground up as JessEm probably did, the ideal would be having the motor fan provide all needed cooling and positive air pressure in the machine housing. Maybe a SS headstock is close to being able to do that.
An additional note, it's not that much of a test, recently running the bandsaw for at least a half hour as i cut a bunch of pieces with a jig I felt the belt cover and it was pretty warm which the motor pan seemed to remain at room temperature. So belt generated heat is another cooling requirement as discussed previously.