clear valve flipbook
This flipbook shows my clear strait through v2 valve being fired at 3000 frames per second. A golfball is in the barrel for this shot. It's not the best view, so I'll try to get some better clips at some point. The sealing face appears to cling to the seat like pulling a suction cup off of a glass surface. If you go from the point that it appears the sealing face breaks loose completely the opening time is 6 ms, but 9 ms if you start from when the piston starts to move at all. Although the effective opening time is probably slightly less for each case since full flow is achieved before the piston is all the way back.
The piston is 3" in diameter, I'll try and put some better reference distances up later.
related linksstrait through v2
flipbook measurement tool
my high speed camera