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Gear Cutting

Gear Cutting


 In order to cut the gears some research was needed as the first traction engine, I simply bought machine gears from HPC and Moffett's and machined the thickness and bosses to suit.
This time the intention is to make the gears from scratch as the cost is approaching £600 for a set of fully machined gears.

My initial plan for gear cutting the first 2 gears for the crankshaft,  probably make the first one in aluminium then if all is well remake in mild steel.

Here is an extract from the machine workshop book showing the dividing information for making the first 2 gears. This is assumed the dividing head has a 60:1 worm which luckily mine does.  This is not normally the case but I know the dividing head I have was a Hemmingway kit intended for Horology and ÷60 is important for clocks for some reason.

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