Quote:". If you get a curve at the top instead of a plateau, you are correct, that is because the hammer is bouncing off the end of the valve.... Problem is, if you are getting that, do you REALLY have enough valve stem sticking out.... or is your maximum velocity LIMITED because the hammer is hitting the back of the valve?.... Better to machine a bit off the back of the valve (or use a longer stem) to make sure, IMO...."Small porting with enough valve stem sticking out can create this condition too. We wouldn't want (in-experienced) people reading this post think that you have to reduce the valve body length to increase valve stem length from the body or all going replacing their valve stems with custom ones.
Doesn't matter.Look at it this way,New guy reads this post.New guy with a stock gun puts in a regulator and does nothing else (newbe). Uses a low reg pressure (<1500psi) and adjusts RVA or HS to run a knee. He get's the condition of hitting the back of the valve with a curve instead of a knee. And doesn't get what other people are getting for power at the same reg pressure.Your first opinions are: cut the back of the valve to increase valve stem or buy a custom valve stem ?? Come on....I am tired of this too. Post is all off track and just argumentative