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| How square is it? And or Where do you start? |
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| Stilldrillin:
I used to make some of the simplest, most effective parallels from steel banding strip. Two pieces of steel strip, both curved into a shallow S shape, to stand on edge. Instant, cheap, disposable parallels..... :headbang: |
| sbwhart:
[Both called slide valves. These are simular to the function of a valve in an internal combustion engine. But one valve will take care of both exhust and intake. I bet your going to ask how they work. I'll see if I can find a link for you to look at. Hi Chaps Found this link explaining how a slide valve works, tried to do it myselve but got bogged down :bang: http://www.mgsteam.btinternet.co.uk/svalve.htm The lap and lead symilar to advance and retard on an IC engine, it gives you a bit of leway when making a valve, as long as your just going to run the engine on air you can get away with quite a bit of error, I messed arround with the timing of my Beam engine I was suprized at how far I could be out and for the engine to still run. Have fun :wave: Stew |
| Bernd:
Great link find there Stew. That should explain it far better than words. Bernd |
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