A Realy Simple Home Made
Posted 18 June 2007 - 03:15 PM
Compared to a Shoe:
The valve with its handel:
Cool first person view:
Well thats about it, comments are welcome as always.
Posted 18 June 2007 - 03:33 PM
Posted 18 June 2007 - 06:17 PM
For maximum efficiency?
1. Pump up. Count how many pumps.
2. Keep going until you hear a loud "bang".
3. Subtract one pump from the total. Rebuild your air bladder.
There you go.
Posted 18 June 2007 - 08:43 PM
Perhaps attach some sort of sleeve (1/2" CPVC?) using an e-clip in a groove on the end of that handle? That may increase opening time by all of a hundredth of a second, as well.
If one were really worried about opening time vs. ease of use, finding a compromise in length would be the simplest option in my mind. Obviously shorter = faster, longer = ease of use in this application...
Or just get some muscle on those forearms. Try taking a 2" or so cylinder (old piece of exhaust pipe), drill a hole in the middle (all the way through both sides), run a good sized length of string through the hole, tying one end to the cylinder the other to a plate-style weight (something you'd see on the end of a freeweight bench press bar). Twist the cylinder in both hands, wrapping the string around the cylinder. This should be lifting the weight in the air, at the same time exercising most of the muscles used when opening a ball valve.
Don't overdo it with wrist exercises: carpel tunnel syndrome is so enjoyable.
I like that duct tape sling. I may have to make one of those for my girlfriend's rifles...perhaps an AK.
Posted 19 June 2007 - 11:50 AM
Won't the handle that you added to the ball valve just make for a slower release? You get lots of torque with that, but not as much speed, right?
True. T=Fd, so the torque is great due to a long handle (d = radius). The opening time is longer, due to the distance you need to travel.
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