There are a few A-T's in the area, nice tractors, good survivors. The reason for the size was simply a matter of scale: big engines, high torque, low quality metal, big wheels. They needed to be big just to stay together and keep traction. This was 1900's engineering at its finest, by the end of the prarie tractor days of the big Rumely's, Avery's and A-T's the technology had progressed to higher rpm, smaller sized engines with smaller flywheels. Manufacturing technology improved allowing more durable gears, more refined transmissions and no need for massive frames to haul the huge engines around.
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Today's Featured Article - Timing Your Magneto Ignition Tractor - by Chris Pratt. If you have done major engine work or restored your tractor, chances are you removed the magneto and spark plug wires and eventually reached the point where you had to put it all back together and make it run. On our first cosmetic restoration, not having a manual, we carefully marked the wires, taped the magneto in the position it came off, and were careful not to turn the engine over while we had these components off. We thought we could get by with this since the engine ran perfectly and would not need any internal work. After the cleanup and painting was done, we began reassembly and finally came to t
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