Jasonb's latest activity

This is the problem with looking at old books of full size vs having actually made a few model engines engines. You may not have seen...

Why would you want a Huco when there is no axial rotation? Your valve cavity is very short and as K2 says will see a lot of back...

Yes I was thinking a Simpling valve, it's on the right side to tee off the incoming main steam feed. Too high to be used to drain the...

This is what I came up with based on the sizes I scaled off the rubbing and 12mm of valve movement. Allows a bit of internal and...

Chris has given the eccentric movement as12mm though if an imperial engine may well be 0.500"

As the ports are mostlikely cored they eill not be perfectly even hence the odd numbers in my post above. going by the image with the...

But the sizes Chris measured do not 5, 4.1, 10, 5.9, 6 Going to need to tie it down a bit before deciding on the valve sizes.

Metric is fine for me too and what I generally work in, though I can cope with imperial. A couple of measurements with the metric mic...

Yes inside admission on the piston valve and the image sin post #127 show a passage at the bottom as well as the previously shown top...

Getting there now. Still not sure what the top and bottom slots of the five do on the slide valve. maybe hold the engine on end and...

I usually drill to the rod size so would have used a 1/4" drill for that. 4 thou under is going to be tight! What size did the team...

From the images in the first post there is not much thickness (maybe 1/8") to the end cover so unlikely and would still leave the...

Most of those shots with the wire are as I would have expected. It is what links the round piston valve chamber to the slide valve...

That should be fine, it's probably going to make less pressure than an engine does.

The parts with the springs on are part of the Ignitor. It is grounded so no earth wire needed. Most hit and miss engines have the...