Hi All, I added a RAPID PROTOTYPING SYSTEMS folder to the Links section to provide a place where links to information about affordable- and not so affordable-...
Frank, A great technology! Our son worked as a research assistant in the 3D printing Lab at MIT as part of his Masters program. I have personally used 3D...
I was able to have Yahoo Groups reactivate our group http://groups.yahoo.com/group/pop-pop-steamboats/ <http://groups.yahoo.com/group/pop-pop-steamboats/>...
Good morning & Happy New Year! Welcome... members new and established. I hope that you find/continue to find our group both interesting and informative....
Hi all, Just joined this group, some years ago I made several engines of varous types and mounted them in cut down cans (I had not the patience to build the...
Hi Dick, Welcome to the group. Go to <http://www.nmia.com/~vrbass/pop-pop/#payne> for information about the use of pop-pop engines in full-sized boats. For...
Hi Frank, thanks for the reply and the link, I am well aware of the poor efficiency of the pop pop etc and the likelyhood of disapointment. I never travel...
Hi Dick, Click on <http://www.youtube.com/watch?v=cvTnm7MRqsU> for video of the first jet powered boat. Actually it was an intermittent jet boat similar in...
Hi Dick, The efficiency of the pop-pop engine is not only poor, it is pathetic. And there are other reasons why powering a manned boat is not reallistic. Look...
Hi Frank, this is very interesting. As this boat is a half scale replica, I assume the only development work was to figure out how it was made and how it...
Hi Jean-Yves, This is a very interesting site. I have yet to digest all of it! The big pop pops are very impressive, but as you say the performance compared to...
... Presuming you're not just interested in (for instance) using steam to drive an axial-flow or centrifugal jet pump of the kind now common in jet boats, one...
The Rumsey engine worked essentilly like an old well pump. The engine draws water in through a forward port and expells it and some steam through a transom...
Hi Frank, I tried this link and got redirected to Google videos, Its amazing how swapping aviation fuel for water and doing away with the candle can up the...
Hi Donald, The thing that interests me about the pop pop is its simplicity and I can play around with them without a machine shop. I don't mind adding a valve...
Hi Pete, thanks for the link. Technology hurtles along so fast I wonder how many inventions are swept aside because they showed no immediate promise at the...
Hoo BOY!!!! You are treading dangerously close to one of my big cussbuttons!! " I wonder how many inventions are swept aside because they showed no immediate ...
I can add to this, how much technology etc has been forgotten because it is no longer relevant. An example is the Ironbridge, Shropshire, England. It is known...
Dick, I look back at my youth when I first saw the Raytheon Radarange at a Science Show in New Hampshire. I saw a egg cooked on a paper plate. I believe that...
Hi Pete, how often in life do we come across a new invention and think, I thought of that years ago, but never got round to doing anything about it! A couple...
... I had the idea for a lifetime electronic watch in 1977. Electronic watches were brand new then, it took Casio fifteen years to actually start selling a...
Hi Frank, not seen anything like this in the UK, apparently its illegal - most things are. http://www.messybeast.com/history/dogcarts.htm Nearest thing is...
Hi Donald, I take your point about efficiency and solar power, I was thinking of the sun as unlimited power, which it is, but as you imply the density of that...
Hi Dick, Your "messybeast" link reminded me of the year (1965) that I was in Argentia, Nfld. I was a Navy Seabee stationed at the NAVFAC site. It was like...
... From: "Richard Mundy" <coracles18@...> Sent: Friday, January 09, 2009 4:50 PM ... The Stirling engine has had two kinds of development: - reduction...
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