Eagle_gears

THIS PAGE WILL COVER CUTTING THE TWO GEARS, AND MACHINING THE CAM

This is the second engine that I have cut the gears for. The first was the Upshur. I purchased the gear cutters,rather than buying the gears, because the cutters were just about the same price as the gears, and with the cutters I can make as many gears as I need. If I "screw one up", I can simply make another. Actually not so simple, rather time consuming, but my time is free..

Here are the two gear blanks. I made both out of O-1 tool steel.

Cutting the Cam gear using Rudy K's technique. I used a 40 tooth master for both gears. The Crankshaft gear, being 20 teeth, required skipping every other tooth on the master..

This is the crankshaft gear, still on the arbor. The gear blanks are fastened to the arbor with Loctite, and heated to remove after cutting. The brass collar is used as an extra backup to assure that the gear being cut does not move on the arbor.

The finished gears. Slightly discolored from the heat when removing them from the arbor. They mesh perfectly, no binding at all.

The cam has been cut. Unfortunately, I had to do this twice. (Notice the screw in the cam lobe?) The first cut did not come out right, so I had to turn the cam completly off, flush with the gear face, then add a collar and re-cut the cam on it. It turns out that spacing 32 teeth is too many. I should have noticed this when cutting the cam on the first try. On the second try I cut till it looked right.

PAGE LINKS FOR CONSTRUCTING THE EAGLE