First PEGASUS EXPERIMENT

[Fruitbat]

Is a bit like sticking batteries in series to up the voltage.
The limiting factor I think is the sealing and casing strength of the nearest pump to what you are evacuating.

FB.

[PLAYSWITHMACHINES]

Oh yes, they work both ways just as well, the vac side is very powerful, mine should get down to less than 24" (mercury) just hope it's enough.

Run them in series should be OK but i suspect the second one may overheat, they mostly have thermal trips in them.

Of course if you cool it with a fan & spray some water on it, it should keep running

Big freezer comps are even stronger than fridge ones

[robomont]

i had to go look at my gauges.the vac pump i have pulls down 25 inches of mercury not 25millimeters so i should have no problem pulling it down to correct vacuum pressure.

[Fruitbat]

Robo,

Listening to you plan and execute this, is magnificent.

There are so many people who spend their time slack jawed when they aren't working these days.

Good on you mate!

Fruitbat.

[Back]

Hey All

PWM
If you think that a Pop off is needed I have a new one that is set to 40 psi. I could send it it to Robo no problem.
Safty first
Bless
Back

[PLAYSWITHMACHINES]

Sure, that would be well within the range of the welded pipes etc.

I guess you should ask Robo if he needs it? it may need to be higher than that because even a standard flange can take 150 psi...
have to go, carry on guys D)

[robomont]

not worried.schrader valve will blow before then.i gonna happen though.gonna be monitoring the pressure .the top wasnt very hot last time due to the coils cooling it.kinda surprised me.there is 18 linear feet of coil so it dissipates heat very well.thats why i helieve i have to add more than what a hickory log can put off.planning on using propane torch next.waiting for burn ban to lift.didnt vid last time but will this time.it has to be heated for at least seven minutes for plasma to activate.it will only acivate at 25-50 torr/mm mercury .so i need to make sure the vapor pressure is correct.plus i should get the proper uv production.if not in this range then uv will drop off in strength.its the uv that ionizes the iron.this uv plasma also creates the magnetic field or ac resonant field.as pwm and ovaltech suggest.

[Back]

Hey Robo
Just let me know I have a few others that I could send you.
Bless
Back

Will check the ratings in the morning as to what I have

[robomont]

if its iron and has a decent surface to weld to i may hit you up.

[Back]

Hey Robo
The Pop off that I have is red brass and threaded. I know I have a 40 psi and i think that I have a 70 psi but still looking for it.
Bless
Back

[robomont]

gonna wait.for now.

[PLAYSWITHMACHINES]

You need to cap the schader valve (it has a thread on the outside, right?) and use teflon tape on the cap, that will increase it's pressure rating, only it means you wont be able to run the vac pump all the time.

If your welds etc are good, then it should hold a good vacuum for years

Also that's the best way to check for leaks, expect a small drop in the first few hours due to gas migrating out of the steel, but after that it should remain stable indefinitely. If its at or near 1 Atm. after 12 hours then it is leaking.

Then you will need to pump air INTO it to 10PSI or so, and use soap suds to find the leak.
Hell i don't need to tell you all of this....

[deuem]

Hey Robo, this is Deuem Chimming in.. I am almost back to normal. Give me another week or so...
Did you try it yey?

Deuem

[robomont]

Well i did a partial test today.i piled a bunch of wood around the base and put ten grams of mercury in it.i had a vacuum on it and pressure guage on it.it never leaked and never built up any pressure.i let air back into it and tried to get it to build up pressure and it never did.the coil is dissipating the heat too quickly.i still plan to put a torch to it at bottom but im beginning to think its not going to work.if it does it will have to be cherry red at bottom.
I think it will be like boiling water in a plastic bottle.the steel wont melt but its going to have to get very hot.
An oak fire just isnt even going to bring it up to temp.

That coil is too efficient.lol.

[ArMaP]

I may be saying something very, very wrong, but what if the coil was covered, so the heat does not dissipate as fast?