All very good advise.
I will add a drill and tap chart, might be an idea to save it or print it out. Reference materials always come in handy.
Search found 2503 matches
- Sun Feb 17, 2008 2:55 am
- Forum: Pneumatic Cannons
- Topic: Questions on valves
- Replies: 9
- Views: 2154
- Sun Feb 17, 2008 2:48 am
- Forum: General How-To & Discussion
- Topic: High Effeciency Piston
- Replies: 33
- Views: 9147
Flash: Very nice animations. 8) From the piston face rearward; teflon sealing face, u-cup seal (buna), nylon sleeve (to eliminate possible scoring), an eraser as a bumper (the only material that passed my hammer test :lol: ). The piston itself is machined from 1045 steel and has been hollowed out an...
- Sat Feb 16, 2008 6:35 pm
- Forum: General How-To & Discussion
- Topic: High Effeciency Piston
- Replies: 33
- Views: 9147
- Sat Feb 16, 2008 4:05 pm
- Forum: General How-To & Discussion
- Topic: High Effeciency Piston
- Replies: 33
- Views: 9147
Hawkeye: The o-ring moves with the piston. Pressure is non-selective, it does not care what it is pushing against. The o-ring is moved with the piston by the pressure differential created when venting the pilot volume. It is the same in your pump. The higher pressure side "pushes" toward the lower p...
- Sat Feb 16, 2008 2:31 pm
- Forum: General How-To & Discussion
- Topic: High Effeciency Piston
- Replies: 33
- Views: 9147
- Sat Feb 16, 2008 2:07 pm
- Forum: Pneumatic Cannons
- Topic: Where to find 3/16'' ID or 1/4 ID
- Replies: 18
- Views: 4254
- Sat Feb 16, 2008 2:00 pm
- Forum: General How-To & Discussion
- Topic: rifiling an ABS barrel
- Replies: 17
- Views: 4720
According to an interview with John Bokett (not by me, I read it), if your ball (marble) makes solid contact with the lands of the rifling, it will spin enough for excellent accuracy. You have already proven this to yourself. That being said, the surface finish on the marbles that I have seen was sh...
- Sat Feb 16, 2008 1:17 pm
- Forum: Pneumatic Cannons
- Topic: Where to find 3/16'' ID or 1/4 ID
- Replies: 18
- Views: 4254
- Sat Feb 16, 2008 11:03 am
- Forum: General How-To & Discussion
- Topic: High Effeciency Piston
- Replies: 33
- Views: 9147
I'm curious; If you guys can make a groove for an o-ring, why don't you use a u-cup seal? No need for an equalization hole or check valve. They are wear compensating. The greater the pressure differential, the better they seal. Your piston would work very much like a qev, and built from suitable mat...
- Thu Feb 07, 2008 1:27 am
- Forum: Pneumatic Cannons
- Topic: Push Button Piston Acuation
- Replies: 7
- Views: 2142
If by push button valve, you mean blow gun, then yes, you can.
http://www.spudfiles.com/forums/my-firs ... 12796.html
http://www.spudfiles.com/forums/my-firs ... 12796.html
- Sun Feb 03, 2008 11:08 pm
- Forum: Pneumatic Cannons
- Topic: Centering the Barrel in a coaxial
- Replies: 11
- Views: 2246
Thanks for the response. I'm using a 36" barrel, rigidity isn't too much of an issue, it's steel. My project: http://www.spudfiles.com/forums/high-pressure-co-ax-progress-update-t12803.html Ok, can we call that 1 vote for 1/3 chamber length from the piston face? Anyone else with a thought on this? E...
- Sun Feb 03, 2008 2:12 am
- Forum: Pneumatic Cannons
- Topic: Centering the Barrel in a coaxial
- Replies: 11
- Views: 2246
I am planning something similar to what psycix referred to. My question is where to put the stabilizers? At the moment, I am thinking about 1/3 of chamber length away from the piston face. Closer to the piston would yield better stability, but would it hurt flow? :? And so, tongue in cheek, I ask yo...
- Sat Feb 02, 2008 10:29 am
- Forum: General How-To & Discussion
- Topic: hunting...???
- Replies: 18
- Views: 4160
- Sat Feb 02, 2008 9:49 am
- Forum: General How-To & Discussion
- Topic: Best-Way to Convert an Air Tank... Into a "Slop" T
- Replies: 11
- Views: 2075
There is a product used to seal gasoline tanks that you might consider. It is a liquid, you pour it in and roll the tank around to coat the inside. Then pour out the excess. It works on gas tanks very well. There are several "brands", so check with you local motorcylce shops, and/or auto parts stores.
- Fri Feb 01, 2008 9:13 pm
- Forum: BB, Airsoft, and Pellet Guns
- Topic: Delete please mods
- Replies: 29
- Views: 10114