Part 4 video - Steam chest & valve rod machining.

This is the Part 4 video showing the machining of the steam chests and thevalve rods for my new twin cylinder slide valve steam engine, including views of the partly assembled valve mechanism in motion.

[@JCLabs]

Keep up the good work John. I look forward to seeing your little engine running.

[@leokuan3676]

lovely

[@kevCarrico]

fantastic!!

[@SangGenerasiMuda]

👏👍👍👍

[@schutendohkji548]

John,
I do like to have the valve stem guide at the top. Many of loco models in Ga. 1 doesn't
have it to support the stem at the front of the chest. The front tip of the stem stops
short of the front steam chest wall.
1. Don't you need to drill a hole thru at the top valve stem guide? Else, the stem would
go forward into the guide (sleeve) and compresses the air? Needs an air release hole?
2. So, you don't use gland packing or an O-Ring at the valve stem's entrance to the steam
chest?