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| building a Duclos "flame sucker" |
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| kvom:
The one we're building, from a book, is 1" bore x1.75" stroke. |
| AdeV:
Having received a copy of the Shop Wisdom of Philip Duclos just the other day :D :) :D, I can confirm that the book engine has a bore of 1" & stroke of 1.75", as per kvom's dimensions. |
| Dean W:
That's great, Jack! Runs like a scalded cat. Thanks for the pics and video! Dean |
| madjackghengis:
Hi all, thanks for all the positive motivation and support, I had to run my engine as I was getting on the net, just because. I'm glad to know the book version is much bigger, I'd hate for a student to lose the drive to build because of failure to succeed, and bigger is easier. I'm really looking forward to seeing the several various bigger engines built, and hear them run, it gives me a better idea of what I've got in mind and how it may work. I suspect Jim, the valve won't be a problem if you scale it up so the flex you feel in the valve feels like it will give a good seal, at spring temper, it would take a lot to buckle it, and the port shouldn't have to be more than say a quarter or a third the bore at most from what I've seen in running. Once they get going, the flame is pretty steadily drawn straight in steady, with no tendency to blow out, if it's positioned right. I'm also looking at the half a dozen ten to fifteen horse lawnmower engine carcasses laying about the storage shed, after giving their all mowing lawns, and thinking what would it take to make one of them into a flame sucker, they've all got about three or four inch bores and about the same strokes. Let's see, if I set up a conveyor to lift the cut grass up to the pre-heater to dry it, and then have it fall into the burner hopper, I can maybe set up a flame sucker lawn mower that's self feeding. I might be feeling a bit beyond myself here, but it's an interesting thought. Thanks much for the comment, Dean, you've helped keep me going on this, and given the motivation to go all the way with every new part till it ran. I got caught up by the several flame suckers that were being posted just a month or two ago, and I'm pretty stoked at seeing many more started, particularly the school projects, because starting young is how you get to where you can't live without these kind of things, and it's fulfilling to be a "Creator", few things even approach hearing that first pop and seeing the flywheel take off. We make the world run these days, even if no one else notices the fact. I've got to say I'm about as happy as a clam right now. :beer: mad jack |
| Mad_Grasshopper:
I could not resist taking a couple vids of this while I was visiting. <object width="425" height="344"><param name="movie" value="&hl=en&fs=1"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="&hl=en&fs=1" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="425" height="344"></embed></object> <object width="425" height="344"><param name="movie" value="&hl=en&fs=1"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="&hl=en&fs=1" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="425" height="344"></embed></object> |
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