Pulse Jet Plans?

Anyone made a pulse jet before? I’m researching building a car scale pulse jet, anyone know of any good resources?

http://unitednuclear.com/index.php?main_page=index&cPath=28_47

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This is probably the best resource for pulse jet plans and info.

Pulse-Jets

I always wanted to build a big one, if not a full scale German pulse jet…

I watched a few of his videos on his YouTube. Doesn’t seem that hard.

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Great, let’s do a North Texas Makerspace V-1 “buzz bomb” contest … enough of the medieval rock throwing and battle bots.

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Reckon the hard part’s not dying.
He’s doing it pretty well, as far as I can tell…

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Currently I’m thinking a lockwood design would be the simplest to build (the design Colin Furze made), I added purchasing a ~50 inch wide slip roller to the next board agenda, which is the tool you want to bend the sheet metal into tubes before welding.

Also am I right in thinking that after switching the wire it is possible to mig weld stainless with our argon/co2 mix? I saw that helium mix is preferred, but we probably don’t want to have multiple bottles being switched out on the mig. (I need to get around to taking tig class…)


http://www.interestingprojects.com/pjbook/plans/lh55lbs.pdf
https://aardvark.co.nz/pjet/mylockwood.shtml

I wouldn’t say bend but roll. Have you reached out for pricing? Call Baileigh Industrial as they will give us a price break for being an educational non profit. They are the ones we are getting out shear & brake from. So they may work more on the pricing. Another thing to keep in mind is the spec on gauge it will do.

For those that don’t also know, you can roll cones with slip rolls.

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Plus I though Furze used hyrdoforming…


too bad we don’t HAVE a pressure washer…

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Haha … we don’t need no stinkin’ slip roller…

That was pretty cool really!

Do you know what grade of Stainless you’ll be using? On a methane reformer (cracks natural gas into free H2 and CO2 for fuel cells) we used 310L (because of some nasty nitrogen compounds produced at same time that 310L was restive to) although 310 Series Stainless will probably work.

I can tell you right now when you start forming Stainless Steel you will learn the true meaning of “Work Hardening” very fast.

Unless you plan on keeping this thing as using it a lot, go with a non-stainless alloy for workability. I’m sure it will last longer than you need against burn-out that SS provides. It’s cheaper and much more workable.

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Was thinking of 304, since that is the stainless sheet listed on metals4u and metals supermarket, so I could pick it up with no shipping charge. 321 is the other possible choice listed in the plans I found, more heat resistance but more cost

If you go the hydrofroming route this guy in the video did TIG’ing would be easy since there would be no need for back gassing the weld. But MIG should be fine since the weld isn’t “for strength”.

This will be an interesting project.

http://www.cottrillcyclodyne.com/Maggie_Muggs/Maggie.html Maybe something for the RC group.