Search found 4898 matches

by Mike Everman
Sun Aug 27, 2017 2:31 am
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1715
Views: 269396

Re: Odds and ends

How about on the bud bottle, consider the chamber to be the bottom 6.5 inches, and submerge a 6.5" snorkel down to the shoulder? Take the neck out of the equation. Then play with snorkel diameter. I would try that if I weren't 2,900 miles from home. I think the chamber is a good aspect ratio and the...
by Mike Everman
Sat Aug 26, 2017 4:19 am
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1715
Views: 269396

Re: Odds and ends

So, how are you deciding on a length?
by Mike Everman
Sat Aug 26, 2017 12:22 am
Forum: Valveless pulsejet forum
Topic: Mike's Build Log
Replies: 364
Views: 91265

Re: Mike's Build Log

Looks like one for "natures children", mark.

Have fun, Nick!
by Mike Everman
Wed Aug 23, 2017 9:20 pm
Forum: Valveless pulsejet forum
Topic: Mike's Build Log
Replies: 364
Views: 91265

Re: Mike's Build Log

Well, more that I want to do liqid fuel for pulsejet and gaseous fuel for pulsepots...
I'm in Costa Rica atm, so not doing anything but dreaming...
by Mike Everman
Tue Aug 22, 2017 8:34 pm
Forum: Rocket forum
Topic: Pulse jet rocket, first flight (ever?)
Replies: 9
Views: 4826

Re: Pulse jet rocket, first flight (ever?)

Hi Axel, are you out there? Looking to find out if you can give us some details about the pulsejet rocket. I just rediscovered your composite jet and rocket stuff again, and wonder if it's fueled by a can of WD-40? If so, brilliant, man! All these years gone, can you tell us more about the fueling c...
by Mike Everman
Tue Aug 22, 2017 4:26 pm
Forum: Valveless pulsejet forum
Topic: Mike's Build Log
Replies: 364
Views: 91265

Re: Mike's Build Log

Nick, refresh my memory; your long duration experiments were propane fired, no?
by Mike Everman
Mon Aug 21, 2017 9:47 pm
Forum: Valveless pulsejet forum
Topic: Mike's Build Log
Replies: 364
Views: 91265

Re: Mike's Build Log

Huh, I've not seen those can tops before. I've been thinking a lot about just the top end, that is held with the jam jar ring. Seals really well, like water tight as you can see in the video. I can iterate a lot of variations on jam jar top ends that way, without making the whole vessel. I just want...
by Mike Everman
Mon Aug 21, 2017 2:18 pm
Forum: Valveless pulsejet forum
Topic: Mike's Build Log
Replies: 364
Views: 91265

Re: Mike's Build Log

Great! I'll redesign on my trip for a full jacket, including water cooling of the "vortexifier".
by Mike Everman
Mon Aug 21, 2017 2:12 am
Forum: Valveless pulsejet forum
Topic: Mike's Build Log
Replies: 364
Views: 91265

Re: Mike's Build Log

Last PLAJET experiment before I have to take a couple of weeks off of this fun project!
http://www.youtube.com/watch?v=eVyjyci_NG8
by Mike Everman
Fri Aug 18, 2017 3:44 pm
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1715
Views: 269396

Re: Odds and ends

Well, you could obviate the thermal mismatches by using lap butt joints between metal plates and ends of tubes. "(details)" You are a crucible, a plate and two quartz tubes from a thermo-jet style. I can figure starting dims for you, based on crucible size. If you have one that hovers around 2:1, L:...
by Mike Everman
Thu Aug 17, 2017 1:54 pm
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1715
Views: 269396

Re: Odds and ends

It looked so promising!
by Mike Everman
Thu Aug 17, 2017 1:45 pm
Forum: Valveless pulsejet forum
Topic: Mike's Build Log
Replies: 364
Views: 91265

Re: Mike's Build Log

Methanol. Hah, I didn't know desiccant is termed a molecular sieve. What I don't know about chemistry would fill a large chemistry book! I am very keen on going to the bronze foundry. You know you can 3D print PLA and cast just like lost wax? Local art prof is doing that here in Santa Barbara. We sh...
by Mike Everman
Thu Aug 17, 2017 5:30 am
Forum: Valveless pulsejet forum
Topic: Mike's Build Log
Replies: 364
Views: 91265

Re: Mike's Build Log

A look inside the melted PLA Pulser. Who knows when the Vortexifier inside slagged. It did get progressively more stable until the walls got soft. This great running one has a 9mm hole. The next one I tried started at 8mm, and I then opened it up 1/64" at a time and never got a good run. Hmmm. Eithe...
by Mike Everman
Wed Aug 16, 2017 7:08 pm
Forum: Valveless pulsejet forum
Topic: Mike's Build Log
Replies: 364
Views: 91265

Re: Mike's Build Log

Ha! Hi Simon. just trying to break new ground and got caught up in it!
by Mike Everman
Wed Aug 16, 2017 2:05 pm
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1715
Views: 269396

Re: Odds and ends

"The intelligent look". Bwa ha ha