Thanks, Whiskey. I was raised in a small town in the Midwest, very poor and had to entertain myself with whatever was available, cheap. These days I could probably afford to buy things like the right angle attachment and 4th axis, but most of the fun is in figuring out how they work and making my own. Half the fun is in the journey, as they say!
Thanks Don, Dave, T, Hugh, I always appreciate and enjoy the comments.
Thanks, George. I had started looking at different helical angled gears because the gearing that drives valve trains usually has a small gear on the crankshaft and a big gear on the cam to get the 2:1 ratio. However, the crankshaft is usually the larger of the two and mechanically it makes more sense to have the larger gear on the crankshaft. Now, finding someone who sells helical gears is hard enough, but finding anything other than 45 degree helical gears is near impossible. That's really what's driven me to figure out how to make my own. Luckily for me, enjoy the process.
Chuck