Search results

One down, two more to go. :)

I met a guy at Cabin Fever who built this as his first engine (or so he claims). But he had as a mentor one of the top model builders.

Posting location could be useful.

I briefly had the castings for this engine before passing them along. It seemed to me that most of the small castings were easier to recreate from billet.

Yellow is a great color for that swiss cheese header. 😋

Maury is still around.

Very informative. I did a 2-start reversing screw for a larger model where I found a commercial tap and turned the shaft to match. I never thought about making the tap myself, nor using acme threads.

Can't imagine what the next project will be. Terry has really hit all the main themes for IC engines.

Just the wiring for the plugs looks to be a challenge, esp. if the wire doesn't scale.

You could also manually trim the end of the text e/g enough to allow the cutter to get through.

I would post the CB and nc files on the CamBam forum where there is a lot of expertise. Looks to me like a clearance plane issue/stock surface issue.

I'm away from home at the moment, but what I did was as follows. Any dimensions inside the frame are scaled to the track ratio, 7.25/3.5. Anything that is outside the frame is 2:1.

For air operation I generally use brass pistons in iron or steel cylinders. No need for rings.

A user on the CamBam forum said he had a program with 3M lines. He makes molds for fishing lures.

One other thing as long as I'm thinking about it. If you are going to make the boiler from steel, then it's a good idea to have blowdown valves on both sides (so you'd need another hole in the frame).

Too far forward

Still time to correct two errors in the plans that caused me the most trouble. The foot plate length was not scaled properly so that the holes for the walkways are too close to the centerline. So when you build the yokes to plan the mounting holes don't line up. Several ways to correct this...

I saw George's engine again at CF; it's a lot smaller than I had thought when following this build.

A beauty

Good time to finish any cad-cam work needed :)