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Help please - Propel qestion

Place for general submarine conversation

Postby 84-1046442519 » Sun Apr 20, 2003 11:15 am

G'day All
I can only get a small amount of air brush propellant into the pressure vessel. I am tipping the can up side downd but transfer seems to stop and only a small amount is in the cylinder. Does temperature have somthing to do with it?
Thanks Keith
84-1046442519
 

Postby 65-1048892380 » Sun Apr 20, 2003 1:38 pm

I always thought you were supposed to chill the propel tank first, by filling it, and then venting it off, by using the tire valve. This would chill the tank so that more propel would be stored. I think there was a big controversy on this on the old boards, so you might want to check there.

John
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Postby 84-1046442519 » Sun Apr 20, 2003 7:28 pm

Thanks John
I will try that. How do you get back to the old message board. I do seem to remember that but I didn't know you could still go to the old boards.
Keith
84-1046442519
 

Postby 65-1048892380 » Sun Apr 20, 2003 8:50 pm

Try Here,
Linked off the Main Page

Message Board Search

John
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Postby 84-1046442519 » Mon Apr 21, 2003 9:51 am

Thanks guy's
I wasn't bleeding off pressure with the blow valve while filling and it works ok now.For the liquid to trasfer,there has to be a pressure difference between the filler can and the vessel. Depressing the tire valve does the same thing as explained by John. Also thanks to Matt for the e mail.
Regards Keith
84-1046442519
 

Postby M. Munger » Mon Apr 21, 2003 2:49 pm

Keith:
Good deal! Now that you're some getting gas in, vent it off like John mentioned, which will chill the system, then fill it up again. Beware of 'overcharging:' depending on how your tank is constructed, there should always be a bit of space for the gas to expand, or else you might have a bomb! I believe the SC has some safety recommendations which should be reviewed and implemented, let's hope everyone can still count to ten with their fingers after a day at the lake! Good luck!
Matt Munger
SC member #1848
What part of "Bonds skin instantly" DON'T you understand?? :-P
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Postby 84-1046442519 » Tue Apr 22, 2003 4:51 am

Hi Matt
I did worry about this myself so I installed a relief valve in the tank and had the tank tested to 500 psi. I am now confident to use it. You can check it out at my web site. Click on the link.
Keith
Ballast Tank and pressure vessel
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