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Post by pitciblackscotland on Dec 31, 2013 14:33:19 GMT -5
   I thought I'll get myself a christmas present and here it is. I love the military items on ebay, this is NOS item the eletric motor will be here next week just need to do a bit of work on it and she ready to fill scuba tanks, Which will be use for air impingement starting my turbine engine projects. As i live in the grey head nanny state of Australia i ask some local scuba diving shops if i can get a scuba tank refill they all said i have to be a certified diver to get a scuba tank refilled. So i say F#$%& em all this is why i decided to get one of these compressors. Cheers, Mark.. |
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Post by pitciblackscotland on Dec 31, 2013 14:37:26 GMT -5
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Post by turbochris on Jan 1, 2014 11:00:30 GMT -5
stupit scuba snobs think compressed air is THEIR bitch?
Hows the compressor, good machine? burst some bottles and post video.
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Post by pitciblackscotland on Jan 1, 2014 13:26:38 GMT -5
Hi Chris,
Your right there mate when i got a compressed air bottle for testing the JFS it cost me $100 for a bottle plus rent and maintenance fees WTF! this is from industrial gas supplies who think they are GOD. The compressor looks well built, i was told these were made back in the 60s. There are some on ebay at the moment 251402129756 161186023267 230736060137 LOL i don't know what the burst pressure for a scuba tank is?
Cheers,
Mark..
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Post by ernie wrenn on Jan 1, 2014 21:23:40 GMT -5
I modified a WW 2 B-27 air over/Hyd compressor to give 3500 pis to fill a Air Rifle I built. Shoots a 50 cal 250gr slug at 1025 fps.
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gidge348
Senior Member
Joined: September 2010
Posts: 426 
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Post by gidge348 on Jan 3, 2014 19:01:37 GMT -5
Good find Mark.
I found some CNG (not LPG) gas tanks at a second hand machinery yard left over from a bus trial.
90 litres and good for 3000psi cost about $40 because they were "out of date".
Ian....
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gidge348
Senior Member
Joined: September 2010
Posts: 426
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Post by gidge348 on Jan 3, 2014 19:04:01 GMT -5
I modified a WW 2 B-27 air over/Hyd compressor to give 3500 pis to fill a Air Rifle I built. Shoots a 50 cal 250gr slug at 1025 fps. In the nanny state of OZ we would have federal police, swat teams and the military here is they got wind of us having a pop gun with the string cut.... |
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Post by pitciblackscotland on Jan 3, 2014 20:38:16 GMT -5
Hi Ian,
Thanks mate, been looking around for some scuba tanks most of them are in OLD,NSW i would like to get one here in melbourne no rush as i need a yoke filler ,Pressure Reducing Regulator,oil (maybe turbine oil?) and some other bits then I'm set. 90 litre tank now that would be nice :-))) BTW awesome work on your gearbox project been keeping on eye on it sorry i carn't put any input as i don't know much about the large commercial built jet engines.
Cheers,
Mark..
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Post by pitciblackscotland on Jan 13, 2014 17:02:07 GMT -5
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Post by pitciblackscotland on Jan 13, 2014 17:09:33 GMT -5
   Still a bit more to go before running the compressor. Does anyone know how tight a toothed belt should be?? Cheers, Mark.. |
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Post by racket on Jan 13, 2014 23:42:36 GMT -5
Hi Mark
"Snug" is the word used in my manual , for a light pitch belt an inch wide the tension on the belt is ~25 lbs , .............so not too tight or not too loose , just right :-)
Your 15mm "displacement" sounds like a reasonable start as both of your pulleys are fairly large in diameter so plenty of teeth in engagement , no need for an extra tight fit .
Cheers
John
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Post by pitciblackscotland on Jan 14, 2014 3:09:56 GMT -5
  Hi John, Ok thanks for that, the belt was easy to put on the pulley and you can see in these photos both of the pulleys are 110mm in diameter. Cheers, Mark.. |
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Post by pitciblackscotland on Sept 4, 2014 3:50:51 GMT -5
Hi all, I finally got this compressor up and runing not happy with it as it took 40 mins to get 1,000 PSI air pressure in the tank. I did notice a leak where the condensation drain valve is so will get that fix and also check the rpm as this compressor should take ~25 mins to fill a scuba tank. youtu.be/VhqJY1ZXHJo?list=UUhmWRMa7r3wD3OV7m0I_eOQ Cheers, Mark.. |
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Post by racket on Sept 4, 2014 4:25:54 GMT -5
Hi Mark
It won't take much of a leak at those pressures to lengthen fill times :-(
Cheers
John
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Post by pitciblackscotland on Sept 7, 2014 3:27:19 GMT -5
Hi John, I decided to by pass the chemical dryer chamber and this has made a big impovement, it took ~14 mins to fill the last 1,000 PSI air pressure in the tank so very happy now :-))))) The filter in the chamber was halfway through its life as you can see in the photos when that strip goes to a tan clour it's finish and will take longer to fill a scuba tank and i don't think i need to dry the air as i wont be breahing the air. secound vid youtu.be/SSefoD_NJ-k Cheers, Mark..    |
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I thought I'll get myself a christmas present and here it is. I love the military items on ebay, this is NOS item the eletric motor will be here next week just need to do a bit of work on it and she ready to fill scuba tanks, Which will be use for air impingement starting my turbine engine projects. As i live in the grey head nanny state of Australia i ask some local scuba diving shops if i can get a scuba tank refill they all said i have to be a certified diver to get a scuba tank refilled. So i say F#$%& em all this is why i decided to get one of these compressors.
