www.pulse-jets.com

Mark,
I've been thinking on how to make a "lifter" jar. The toughest part is suspending the fuel in a inverted jar. Been considering a aluminum fuel tray attached to the inside of the aluminum can.
Joe

I remember those little cans, used to have them all over the place.

I May still be able to lay my hands on one, I will advise, if I can find one or two.

This could take a few days.

I would be happy to drop it/them in a box to any where, if I can find them.


Cheers

Found one!

Where am I shipping it to?





.:.

http://www.istockphoto.com/file_thumbvi ... isters.jpg
Would be funny to start the little canisters up with another made of plastic, in keeping with a theme. ha
http://forevergeek.com/images/leyden/leydenjar.jpg
http://www.sparkbangbuzz.com/els/stgen.jpg

I bought some little aluminum bottles long ago and there are several small/tiny aluminum containers out there on some supermarket store shelves that might fit the bill too, with some rigging.
(Not the best examples below).
http://images.google.com/images?hl=en&i ... a=N&tab=wi
http://images.google.com/images?um=1&hl ... um+bottles

I was thinking though you might be able to find some really thin-walled steel or titanium tubing or vessel or part that would work just as well, weigh very little. I have some .002ths and .003ths and some .004ths and .006ths blued tempered spring steel if only I could get it to do my bidding or have some high tech company make me a bottle and snorkel out something that thin. Stainless would be better though, like aluminum or titanium, it wouldn't rust. I know they are out there. ha

A flattened jar makes a nice augmented version. Looks interesting also.

j.m. -

Of course (getting back to a literal rendering of the title of the thread), you really CAN make full-bore Tin Can Jets if you really want to. The trick is, you have to become expert at welding really thin stuff. I built the original Fo Mi Chin valveless engine and eventually got it running, then tore it up and re-built it as the Fo Mi Chin II engine. The only real problem (other than touchy welding) is that mild steel engines this thin don't last long in static running without some forced-air cooling. Ask me how I know. Ha.

The tailpipe for these was 1.25-inch OD antenna mast tubing from Menards. It slips right over the pressure can top lip, and then you just delicately weld it in all around. The spark plug mount is built up out of big washers, and finally a nut with the right thread for the plug. For details, visit the links below:

Original Fo Mi Chin prototype:
Construction: viewtopic.php?t=637
First run: viewtopic.php?t=1540

Fo Mi Chin II re-work:
Construction: http: viewtopic.php?t=1767
First run: viewtopic.php?t=1848
Strange Death: viewtopic.php?t=2289

L Cottrill

You should put that last picture on a Mug


The other day I found my self collecting together assorted trash. An empty canned air can, some 1/2" emt ( elbow, pre-bent ) some 1" ish straight Emt scrap, . , .

I think a jet is forming....

Enjoyed this thread. Here's one that I made the other day from a soup can and some scrap pipe.
Pete

cool! so how did you put it together? What happened to the seams and such after this run?

Where is the intake? Opposite of the tail pipe?

Looks like it's stuck on the side of the can.

Ha! I see it now. Looks like a Logan. Maybe in this instance a Lo-Can.

It's a goofy setup. I just had a thought - how simple and fast could I make one that would run? It's a #15 can that I drained of broth. I cut a 3/4" hole in one end and made a few relief cuts around the edge of that hole and then forced a length of thin walled steel pipe in. I made a couple of L-shaped braces out of metal strips cut from another can and just screwed them into this can at the juncture with the exhaust. Used a hose clamp to connect to the pipe. It's not very strong; it sagged (you can see that in the video) as soon as I put the inlet on. The inlet is a piece of 3/4" that I borrowed from another jet. Same as the exhaust - cut a hole in the side of the can - but the inlet has threads and I pressed it until it screwed in.
Drilled a hole in the end of the can for a spark plug, attached it to an an old weedwacker magneto assembly, stuck in a fuel line and turned it on. It didn't even need any air to start. Leaks like a sieve but runs as you can see. Kinda "proof of concept" thing.
I've run it quite a bit. Hasn't melted yet.
Pete

That's so rich. Nice work, Pete. Now to make a more robust one for the numerous requests for a simple weldless design.

The best tool I have is a spot welder, which I'm sure could be a DIY thing any number of ways (like a car battery and a couple of copper electrodes), but if a person spends $190, it opens up so many possibilities.
http://www.harborfreight.com/cpi/ctaf/d ... mber=45689

Wow that is not a bad price. Compared to these guys any way....

http://www.northerntool.com/webapp/wcs/ ... 114+765941

Quality may be a question but that could go both ways...

.:.