Can you pump a 200 BAR charge up to 240?
My nutless dive shop owner will not fill my 3440 psi 150 cf steel dive tank beyond 3200 psi.
My feeble mind…ever grinding…has inquired whether there is a hand pump that could top off a 200 BAR fill to 240 BAR?
I realize it would take some pumping, but would it really be that difficult to get 40 more BAR in an air gun cylinder? I’m not trying to top off the dive tank, just bring the pcp cylinder up to max.
One of you geniuses out there have an answer.
Kindest regards,
Hoot:
All Replies
Viewing 9 replies - 1 through 9 (of 9 total)
Using a compressor assisted pump would make it easier. Plus Hoot is buff, he ain’t having no heart attacks, check out his abs 😉
Nice gesture but you’re just feeding his crack habit!
Cheers!
Sure. You can do it with a Hill pump but you will have a heart attack in the process. Do your self a favor and get a 71 or a 90 cf tank from Joe Brancato. I will even contribute $25 to the purchase. You have been such a informative and entertaining contributor to this forum it is the least I can do. You will not regret it. Let me know if you make the purchase and I will send the $$ your way.
Cheers!
My feeble mind…ever grinding…has inquired whether there is a hand pump that could top off a 200 BAR fill to 240 BAR?
I realize it would take some pumping, but would it really be that difficult to get 40 more BAR in an air gun cylinder? I’m not trying to top off the dive tank, just bring the pcp cylinder up to max.
One of you geniuses out there have an answer.
Kindest regards,
Hoot:
Your knees are shot from being on them too much in bikers bars doing ‘favours’
Your hands are shot from too many ‘handjobs’
Now you want to try and hand pump up to 240 bar??
You need to insert the fill hose into your rectum and let loose to get the required fill level.
Don’t overfill though, that tank can only take so much…!
Time for a ShoeBox Hoot! Or the new one from AOA. 😉
Screw the local dive shop owner. 👿
Knife
Praise from Caesar….. 🙂
3500 psi seems to bring the level up to a bit over 240 BAR.
I agree, AF pumps are crap. I’m going to “Google” Chinese Shoebox Compressor” and see what pops up!
Thanks for the info…
Hoot:
The AirForce Brand pump claims a 3600PSI fill pressure. My Hill pump claims 3300PSI. I’ve never heard a good word spoken about the AF pump though.
Viewing 9 replies - 1 through 9 (of 9 total)
- You must be logged in to reply to this topic.
Hoot: , I’ve been using Hill pumps for years. Having a son approaching 30, I find it amusing how many “men” find using a hand pump too hard. However…
To give you an idea of the rate of fill: it takes about 5-6 minutes to fill a R3M long, .25, from 150-200 bar. It takes about 4-5 minutes to fill an AA s510 Extra FAC from 150-180 bar.
The Hill can deliver 250 bar. However fit you are, you will be at a mechanical disadvantage if you weigh less than 150 lbs. (or, you could wear a small, weighted backpack :P)
In order to use a manual pump efficiently, without dying or cursing and setting it on fire, there are some key details:
1. You must be smarter than the pump.
2. Because you’re using your body weight, with arms held fairly straight for the compression, your hands, wrists, elbows need to be in reasonable shape, I’m missing half a wrist and can still do it.
3. It is a slow process if you don’t want to get tired. I top off guns after shooting, when I can take my time watching a movie or conversing on the phone. You need to let hand pumps cool down after five minutes or so-they can get damaged by heat otherwise. A 150 cf tank will take a very long time to top off. I’m getting a 17 cf tank and want to see how long it takes to get that up to 240-250 bar. Most young’uns waste plenty of time “thumbing” their devices 😯 texting, facebook, cell phones, etc. Then they complain about how long it takes to use a manual pump. For me, it would take about 1.5 hours to drive to a dive shop, fill a tank and return.
If you can afford a Raptor compressor, they seem to be the up-and-coming solution.
By the way, if you open up the bleed valve on a hand pump, make sure your genius dog is on a piss-resistant surface.