Moderator: Mike Everman
Bruno Ogorelec wrote:Machine a steel plug for a fit so tight you cannot press it in without a mallet. Put the plug into deep freeze. Take out, hammer it in (it will be smaller and easier to push in), let it thaw. Presto! A fit so tight you won't take it out very easily anymore. Pulsejet operation will only make it tighter still.
mk wrote:Mark wrote:[...] And then sell it on eBay. [...]
...with the attached explanation, of course. 100 percent serious...hehehe...
Safed my day again. Thanks Mark.
Mark wrote:How about a young girl buying some pretzels in Nebraska, next door neighbor to Larry, and selling it for more than the few dollars she paid for the bag of pretzels. I think we should be designing Virgin Mary pulsejets to sell on eBay.
Mike Everman wrote:I tried the press fit method, granted I did not really try too hard, nor was it the thermal interference you're describing. unfortunately, Bruno, the head plate or plug stays cooler than the chamber wall gets, I think. The heat will relieve the stress you want in the press. Mine went from merely leaky to downright rattling. I had a press and then ran a pipe cutter fore and aft of the washer that was my press-fit bulkhead. I think the CC tube needs to press inside the bulkhead for best chance at it. and add some muffler bond, too.
Larry Cottrill wrote:Mark wrote:How about a young girl buying some pretzels in Nebraska, next door neighbor to Larry, and selling it for more than the few dollars she paid for the bag of pretzels. I think we should be designing Virgin Mary pulsejets to sell on eBay.
I don't think it would take much to do that by design, but to be valuable it would have to be something that occurs naturally or accidentally, like the shape of heat discoloration somewhere after the engine's first run or some such. You can't manufacture miracles that sell, you have to take them where you find them.
Mark wrote:[...] What I was half suggesting is that I could design a pulsejet and claim there was some hidden feature in the shape of Mary that produced extra thrust, a resonant secret waiting to be discovered. [...]
Mark wrote:[...] So if holy water is just natural and something you can't manufacture, where can I get some, so that my lawn will be greener than the neighbors.
Sorry, but I just find holy water to be water, I don't see it being manufactured or having any miracle cures. [...]
Mark wrote:Who can deny some of the previous valveless posts with the twisty augmenters didn't look every bit like a pretzel without the salt crystals attached?
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