GreenTwin's latest activity

I have seen a number of functional compound launch engines, but the model engine compounds at shows that run on air may be more for for...

Anything goes with model engine design, and so there is no way to compare apples to apples. If one wants to make an accurate model...

Here is the Stanley. Looks like the interior of my valve layout needs to be a bit larger if it is going to adhere to a Stanley or the...

From what I got from Martin when I purchased the castings has some differences from what I got from Mike Remus. Like you I went through...

It is hard to say if the original designer/builder adhered to typical steam engine norms, or did their own thing. Could be either. We...

So it just occurred to me, if OP took measured the valve travel without his Stephenson's link being in the full gear position, then it...

This is the Stanley design scaled down to give 0.2" steam ports, like on the OP's engine. It should be noted that in order to achieve...

And this diagram from "Verbal Notes" gives a lot of information about events for a steam engine, which are admission, cutoff, release...

This is my analysis of the Stanley. This material will give an actual commercial design to discuss. .

Your valve is designed around asymmetrical ports and bridges. I am not aware of a steam engine that had assymetrical ports. Asymmetrical...

They make some couplings that are used to attach pulleys and flywheels to shafts, and they are slit several times, with an allen screw...

Given that the port locations and sizes are somewhat approximate, I think the best that can be done right now is to make an...

The first plan was to make a wobbler, but then I saw the plans for a finger engine and figured it would be a better first project. The...

Very tricky piece. Turned out great ! .

I did it. After 40+ years as a Tool and Die Maker I wasn't about to let a wimpy piece of metal beat me. Before I went to the trouble and...