Put to the Test
Prony brake tests tractor, steamer horsepower
By Lyle R. Rolfe
Ever wonder if the horsepower listed for your tractor or steamer is correct? If you had a Prony brake, you could find out in no time.
Don’t try to find a Prony brake at your local farm implement store. Such devices are not produced commercially, says Doug Wise of Cedarville, Ill. But if you’re mechanically inclined, you can build your own – like he did.