Breaking down the "Fast Burn Model"

http://www.network54.com/Forum/275684/message/1341251651/Airfierce...My+take+on+flow..don%27t+be+too+quick+to+discard+that+%26quot%3Bfast+burn%26quot%3B+powder+model 

Scot says (post referenced above): "This model is why I'm such a fan of fast, light strikers, valve bodies wide open to the reservoir, and open porting...kick the pellet in the skirt with a high pressure pulse, and get the valve shut as fast as possible..then don't let it open again."

why I'm such a fan of fast, light strikers: This has been demonstrated with the AC39x builds, which I'll attest to first hand (cuz I built one, with copious help )

valve bodies wide open to the reservoir, and open porting: your saying to_not_ restrict air path at all (reasonably speaking), even at the TP? Wider air path for as much of the "conduit" as you can? (Like more lanes on the highway)

get the valve shut as fast as possible..: again, another precept of airconservation. So use a heavy/heavier valve return spring to get it to shut quickly, and allow the delivered air charge to do its thing

then don't let it open again: so either adjust it so the springs stop the bounce, or use a HDD? And the lighter striker wont have the mass/momentum to open the valve again (hdd or heavy return spring)

Ok, so far so good. So open the port on the valve to something simialr to the TP? Some starting point/target wieght for the striker? ANd I'll assume you will need a heavier hammer spring to drive the now lighter strikerfast enough to overcome the now stronger valve spring?

Better order in some more pellets, more 7up and a reflux-friendly snack bowl. Some QT with the chrony is coming up

 

dr_subsonic's pneumatic research lab

the Lunatic Fringe of American Airgunning
Southwest Montana's headquarters for Airgunning Supremacy
Proud Sponsor of team_subsonic