Recent content by Bob44

Hi folks, I’ve been 3D printing for about 4 years. I use a Ender 3Pro and a S1 Pro. Room temperature, humidity and filament dryness and a bunch of other things affect the print quality and sticking to the bed. The weather even has an effect on 3D printing. Good luck patience is a virtue. When...

Liquid cooled Sterling I built about 10 years ago. A Rudy Kohoupt design

I forgot, I realize circuit breakers are not supposed to be used as off/on switches but I don’t know a better method. My air conditioner/heat pump is on a separate circuit which I leave on.

When I shut down my shop for the day, I have 4 circuit breakers I shut off, 2 for lights , 2 for machine and miscellaneous including battery chargers. Greasy rags in the metal container. Always something could still happen but at least I tried!

Jerry Howell website has good plans for a number of gas engine designs as well as sterling engines. All for sale.

Ah the sound of my AN-TPS 1 search Radar running on a pair of Continental 4 cylinder flathead 400 CPS generators in the cold German night, in my deepest sleep I heard the one started running out of gas; the 400 CPS whine would start to sag and go flat, suddenly the other generator came to life...

Gears made

I usually do my final lap on the valves with toothpaste, I think it gives a nice finish and seal on the valves and seats.

Made these for my Farm Boy about 3-4 years ago. I bought 1.5"x6" solid cast disks from Speedy Metals and cut them out on my mill using the measurements in the Howell plans. It took a while but they seem to do the job.

I think it's called a follower crankshaft. A couple engines in the Home Shop Machinist magazine uses them including the Rupnow 4 cycle. I had my doubts about it but it works fine. Also 2 cycle model air engines with rotary intake valve use a hollow crank. Just my .2 cents for what it's worth.

I have trouble building my normal size stuff; but sure have a lot of fun and that's what it's all about. Bob