Search found 5007 matches

by Mike Everman
Fri Mar 01, 2024 9:45 pm
Forum: Pressure jet forum
Topic: Plans for my axial Gluie 130R engine
Replies: 2
Views: 733

Re: Plans for my axial Gluie 130R engine

Hi Kevin, love that Chicago rolled metal cone calculator. Nice utility.
by Mike Everman
Thu Feb 22, 2024 12:15 am
Forum: Valveless pulsejet forum
Topic: Please put your "I am new and need help" question here.
Replies: 404
Views: 1955051

Re: Please put your "I am new and need help" question here.

Welcome! Please let me know what links no longer work. The site was just updated last month for that very reason and they should all be working now.
by Mike Everman
Wed Feb 21, 2024 5:20 pm
Forum: Gas turbine forum
Topic: Got a few turbos I wanna play with
Replies: 1
Views: 739

Re: Got a few turbos I wanna play with

Nothing in the "Looking for plans?" in the right size range?
The UK Gas Turbine Builder's Assoc. (GTBA) is a good resource. Been a while for me.
by Mike Everman
Wed Feb 21, 2024 1:41 pm
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1850
Views: 854882

Re: Odds and ends

I don’t know what they might be used for, but McMaster had them and i bought some just because. I think you can relate!
Mark wrote:
Thu Feb 08, 2024 5:47 pm

What sorts of things are the hollow bearing balls used for or what do you use them for? They sound like something nice to have for special projects.
by Mike Everman
Wed Feb 07, 2024 1:38 am
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1850
Views: 854882

Re: Odds and ends

Hmm, I have some hollow 1” bearing balls…
by Mike Everman
Tue Feb 06, 2024 4:34 pm
Forum: Off topic forum
Topic: youtube
Replies: 1512
Views: 570927

Re: youtube

Maybe put a AA battery in a rocker, shorted with a high value resistor, so it heats until it dies? Or there are chem based hand warmers that might work. Sounds like it needs very little differential temp. Do you have an infrared thermometer to get a feel for the differential right before it stops wo...
by Mike Everman
Mon Feb 05, 2024 3:51 pm
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1850
Views: 854882

Re: Odds and ends

Literally two days ago I did this setup with a bimetallic strip from a thermostat. I did not have the dial to know how much it moves with temperature, so I had to measure it.
IMG_4318.JPG
by Mike Everman
Wed Jan 31, 2024 4:41 pm
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1850
Views: 854882

Re: Odds and ends

This is very distracting, Mark!
by Mike Everman
Tue Jan 30, 2024 7:16 pm
Forum: Off topic forum
Topic: youtube
Replies: 1512
Views: 570927

Re: youtube

Love the clockish one, thanks!
by Mike Everman
Tue Jan 30, 2024 7:11 pm
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1850
Views: 854882

Re: Odds and ends

The continuous rotation, is that all you? The rockers were one thing, but this is amazing. I feel like it is convective action, but works in a vacuum, no?
by Mike Everman
Tue Jan 30, 2024 7:06 pm
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1850
Views: 854882

Re: Odds and ends

Mark, that one is magical!
by Mike Everman
Tue Jan 30, 2024 7:02 pm
Forum: Valved pulsejet forum
Topic: Original Schmidt Tube
Replies: 11
Views: 15225

Re: Original Schmidt Tube

I think I would rather never be near one of those running.
by Mike Everman
Fri Jan 05, 2024 11:16 pm
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1850
Views: 854882

Re: Odds and ends

I feel like it would also work with a straight cylinder that is imbalanced so it rocks on a flat plate. If my thoughts on thermal bow are correct... Seems you would want high thermal conductivity at the contact, and low emissivity of the rocker so it does not lose too much to the environment, and hi...
by Mike Everman
Fri Jan 05, 2024 11:02 pm
Forum: Ramjet forum
Topic: rotating pulse detonation engine
Replies: 2
Views: 778

Re: rotating pulse detonation engine

Yeah, so much being done with this idea these days. I've been following it since we discussed it here somewhere years ago, and now it is real. Super cool!
by Mike Everman
Tue Jan 02, 2024 9:54 pm
Forum: Valveless pulsejet forum
Topic: From Russia without Valve
Replies: 20
Views: 3656

Re: From Russia without Valve

pjet wave simulator.gif

Hmmmmm. Posting does not seem to like .gif, but click on it. Not sure what it's good for.