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Your psychologist must really wonder about you... ;)

The Hydromite is actually not a true tunnel hull, but a hydroplane. It does use the same effect to some degree, but rides on the water on 3 points as well as on a cushion of air under the center. The tunnel hulls have the sponsons going full length, like a catamaran (The AquaRacer and AquaRod ). The...

How About this one? http://www.youtube.com/watch?v=9wYmUBdhl6s http://www.youtube.com/watch?v=RRisjcfYWrc I think there's a playground near us with one of those carousels that the kiddies have to push... I was thinkin of other usues... Blast the crap out of some idiot with the super bass boom box c...

A few Hydros & Tunnel Hulls (Maybe I'll build one in winter if I get our sailboat done) http://www.microhydros.com/hull_plans.htm http://www.rumrunnerracing.com/plans/hydromite.htm http://www.svensons.com/boat/ http://www.svensons.com/boat/?p=MechanixIllustrated/AquaRacer http://www.svensons.com/boa...

My garage floor has a very slight downhill slope towards the door. It's just enough to almost overcome the friction of the wheels. The problem is that this means the exhaust will be pointing into the garage (towards the back wall) instead of out the door! I will use the heat shield (still attached t...

While I was on my sick day yeterday I went to the hardware store, and next door is a hobby shop. They had a couple of R/C hydros, and I immediately realized I could put my engine in one of them. Then I saw a tunnel hull, which is less geometry critical, and I realized I will be building one someday....

Here you can see the dome of the bottom & lid of the combustion chamber:

Another way to do the tailpipe attachment was suggested by rocket builder Gene Border, ...you flare the FRONT end of the tailpipe so it won't drop through, and pass it in from the inside of the chamber till it contacts the rear chamber wall. I actually did that initially on this engine, but the thi...

I wonder if there are octagon boxes w/o so many knockouts. I seem to remember some boxes without a bottom... it would be easier to weld on two lids. But the I think the idea of a 1.5" length of 4" exhaust pipe with two lids would be easier. It wouldn't be a bad kit either. You could dome the lids an...

All right, Mark - now I've actually seen the videos. Very impressive, indeed! When you get a chance, please take careful measurements and post the final "as built" dimensions, INCLUDING how much the sides are domed out. Again, congratulations, sir! Find out if you can demo your engine for a church ...

Y'all are giving me incentive to run it again. At least I already have a fish scale (somewhere). I'll have to make a new carriage for it. I do have a smooth level floor in my garage (my Laboratory is too cluttered). I can point it out the door and run it to get the thrust measurement. I will not be ...

Some of the joke goes back to my statement that I don't need another hobby, and Jim's respons, in this thread: http://www.pulse-jets.com/phpbb2/viewtopic.php?p=49796#49796 Sorry for the confusion. I'm thinking maybe if I use a 1.5" length of 4" diameter exhaust pipe and make two domed lids in place ...

I think attaching a one pound propane cylinder in the middle and letting it take of across the desert like a big pinwheel would be an absolute gas! Or turn it horizontal, put some blades around the outside that are like a fan (sort of, actually more like a turbine engine's bypass section)... and mak...

"Hello, my name is Mark, and I'm a rocket scientist..." "Hi Mark! Welcome." Step one... admit there is a higher power. It makes me wish I were still in college so I could get credit for it and call it "Work". BTW, when I say it runs unbelievably well, I mean that I'm just astonished that it works so...

I Might be... but, naw, I don't have time for that. I have to admit that such an unexpected success really is exciting. I expected some fine tuning, but it just fired right off. I really can't get involved in another hobby! But if I see a Go-Kart chassis cheap, I might buy it for the future. I think...