Hi I am a retired John Deere mechanic & shop foreman 35 yrs. at it.
Self though home machinist I have a Bridgeport mill, 13 x 40 in. lathe, and a lot of other things that go with a shop. Once in a while i do repair for other people.
I have built several models i have
Red Wing water cooled
J & E Junior scratch built
J D 1/2 size of the 1 1/2 HP scratch build
Olds 1/4 scale
1/4 scale hot air eng.
Holt model if you go to You Tub & search Holt model eng. you will find it, it is Red
I have 5 model steam eng. various makes.
I also built a 1903 replica horseless carriage that i use in parades & tractor shows, one show is at the Royal George & have driven across the bridge several times. I am thinking about scratch building the Wyvern eng. i have been trying to make the helic gears for the side shaft. I made Chuck Fellows helic gear attachment and it works well, the hardest part is getting the right angles on the temp lets. Hope i didn't bore any of you Thanks Don