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piston questions
Posted: Mon Jun 23, 2008 1:18 am
by jr
How far will the piston travel once the pilot is dumped?
and at what point of travel is the majority of the psi gone from the chamber?
I'm an idiot.... can someone please move this to the pneumatic discussion for me.
Re: piston questions
Posted: Mon Jun 23, 2008 1:22 am
by MrCrowley
jr wrote:How far will the piston travel once the pilot is dumped?
and at what point of travel is the majority of the psi gone from the chamber?
Well in a frictionless enviroment, the piston will keep going.
It will go until it is told to stop by something we like to call 'the bumper'.
For the second question, probably when the piston has travelled half way.
Re: piston questions
Posted: Mon Jun 23, 2008 1:26 am
by jackssmirkingrevenge
jr wrote:How far will the piston travel once the pilot is dumped?
and at what point of travel is the majority of the psi gone from the chamber?
There are too many variables to give you an answer - it depends on how big your chamber is, how heavy and tight your piston is, what psi you're using and how good your pilot valve is.
Posted: Mon Jun 23, 2008 1:28 am
by jr
so any time after the half-way point I can stop the piston travel? Do all those veriables realy affect the distance a piston travels and how soon it can be stopped and returned..I know that the pilot volume will have an affect on the travel speed.. and that was the next big question.
Posted: Mon Jun 23, 2008 1:30 am
by MrCrowley
No.... You find the optimum piston travel and let the piston travel that far.
There is no 'halfway' point in a piston. EVERY PISTON IS DIFFERENT IN THEIR OWN UNIQUE WAY. NO PISTON IS THE SAME.
I suggest you do a lot more research. No offence.
Posted: Mon Jun 23, 2008 1:40 am
by jackssmirkingrevenge
For the record, your piston only needs to travel between 25 to 50% of the barrel diameter for maximum efficiency.
Here's some
theory for you to contemplate
