Steam Sawing 7 Hardwood Logs - Part 2 of 3 - Focus on the mill.

Sawing 7 Hardwood Logs With Steam
21-75 Baker Uniflow
Air Set Sawmill, Hydraulic Turner
Now With A Laser!
Part 2 - Focus on the mill, first half of the job.
Part 3 will also focus on the mill, showing the completion of the job.
Part 1, posted several months ago, shows an overview of the operation, with the engine doing a spark show while working.
The engine is a 21-75 Baker Uniflow, the middle of the later Baker line of 19-65, 21-75, and 23-90 (drawbar and belt horsepower). Each of these engines produces well over their rated belt horsepower, as was the practice in the days of honest horsepower ratings, with massive torque. The Uniflow design has exhaust ports in the middle of the cylinder, similar to a 2-stroke IC engine, so that power is not lost pushing the spent steam back out through the valve chest, and the valve chest doesn't get cooled off on every stroke. The result is more power, and the ability to run at higher RPM than most steam engines, again increasing horsepower. A smaller flywheel/belt pulley is used to maintain standard belt speed.
This is an old sawmill, upgraded with air and hydraulic assist. The dogs are air set, the kickers are air, while the chain turner and deck chain are hydraulic. The air compressor, hydraulic pump, and edger are all belt driven from the main shaft. The only gas engine is a little Honda driving the sawdust blower. A stationary gas engine like this is permitted within the rules of this Amish community. The laser cutting guide is new this year.
Buckeye Steam & Gas Reunion
Middlefield Steam Engine & Railroad Park
Middlefield, Ohio
July 7, 2023
The whooshy sound heard part of the time is another engine running a Power Eater behind the camera.
Panasonic FZ-1000
[805]
230707g2 Jonas Sawmill Part 2