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From :  Larry Cottrill
Date :  2002-01-23 16:45:41
Subject :  Re:Mini Myers Initial Tests -- Long Post
Bruno Ogorelec wrote :

>Larry,
>
>Thanks and congratulations! Great to see someone trying those odd ancient designs to see how they worked. Engineers used to be smarter back then because they had to be, without the amazing tools they can wield these days. Also, everything was on smaller scale back then and you could afford to experiment. Today, being too bold is simply too expensive.
>
>Concerning your test -- it confirms my fear that there is no way that machine could have sustained self-ignition. Of course, with some simple electronics, this is not a problem. As for working only with forced air, well, so many proven designs will do that until you adjust them precisely, let alone something as far out as the Myers. It is probably due to the very inefficient shape of the jet.
>
>Frankly -- even though I was the one advancing the theory that it works on teh choked jet principle -- I was amazed that the thing worked and that there was no appreciable blowback through the front jet.
>
>Are you sure it was not due to the air pressure -- you know, ram pressure preventing the expansion of gas towards the front, like on a pressure jet?
>
>Thanks again! A grand experiment!

Bruno
------------------
Bruno,

No, I cannot be absolutely sure of that. On the Synchrodyne, I had the advantage of being able to actually see that the gas was moving in the forward direction as predicted. Here, I can't see anything. If I had gotten it to pulse at really low air flow like the synchrodyne, I'd be certain, but not the way it is right now. I would think, though, that several things would be different if the incoming air was all he has to work against -- the nice character of the noise, and the reasonable pulse frequency, as examples. I really can't see good clean pulses of reasonable duration if he's not momentarily overcoming the inward flow and using the choke.

Then, again, one has to be really careful when things seem to be working the way one desperately wants them to ...

I think the next logical thing to do is break the tube and weld in another 8 inches or so and see if things change.

L Cottrill
------------------


Mini Myers Initial Tests -- Long Post (2002-01-23 12:25:39)
   Re:Mini Myers Initial Tests -- Long Post (2002-01-23 13:33:02)
     Re:Mini Myers Initial Tests -- Long Post (2002-01-23 14:33:27)
       Re:Mini Myers Initial Tests -- Long Post (2002-01-23 15:22:51)
         Re:Mini Myers Initial Tests -- Long Post (2002-01-23 16:19:07)
           Re:Mini Myers Initial Tests -- Long Post (2002-01-23 16:45:41)
   Re:Mini Myers Initial Tests -- Long Post (2002-01-23 18:17:41)
     Re:Mini Myers Initial Tests -- Long Post (2002-01-24 05:59:41)
         Re:Mini Myers Initial Tests -- Long Post (2002-01-24 06:11:02)
   Mini Myers Initial Tests comment and digression (2002-01-24 10:43:21)
     Re:Mini Myers Initial Tests comment and digression (2002-01-24 12:09:24)
           Re:Mini Myers Initial Tests -- Long Post (2002-01-24 13:22:31)
           Re:Mini Myers Initial Tests -- Long Post (2002-01-24 16:07:29)
       Re:Mini Myers Initial Tests comment and digression (2002-01-24 18:26:38)
       Re:Mini Myers Initial Tests comment and digression (2002-01-24 19:19:21)