I E-mailed that vendor on E-bay and asked some questions. He said the nominal input
RPM for the pellet mill is 2200
RPM. He said the diesel version is upgeared slightly to get from the nominal 2000
RPM of the engine to that 2200
RPM input. So I am guessing that the
PTO version at Pellet Pro has a planetary gearbox on the input as it has the same pound per hour rateing with only a 540RPM input. It is a small pic, but if it is a planetary gearbox in that pic of the
PTO model, it sure is a small one.
He asked if I was interested in a
3PH model, and I told him yes, and also in a similarly powered hammermil for processing the raw material. I also asked him for a total price delivered from the wharehouse in Tacoma into the back of my truck. He replied that he has sent a message to his supplier in China so We are waiting on what they have to say.
I could see a neat little
3PH assembly with both onboard. You drop sticks or chips from your chipper, or hay/grass into one chute, and get pellets out the other
You will then of course have to cool and dry the pellets afterward...
Whatever pellet material you burn will have different combustion characteristics. A stove that can do multiple types will need a controller, pellet feed and possibly some airflow control that can provide differing volumes of combustion air and fuel to allow for this. That is probably why a manufacturer of a particular stove says use only 1 particular type of fuel. They probably havn't done the research to determine if a different type of pellet will burn correctly/safely in their design of stove.