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Posted: Tue Oct 23, 2007 10:46 am
by octane89
Can someone answer this for me-
Is it possibly to have too much pilot volume? I have a 3" Tee, and the pilot volume is about the size of a 3" cap.
Posted: Tue Oct 23, 2007 10:53 am
by Pete Zaria
octane89 wrote:Can someone answer this for me-
Is it possibly to have too much pilot volume? I have a 3" Tee, and the pilot volume is about the size of a 3" cap.
Yes, too much pilot volume is a common problem. A larger pilot valve does help, though it's best to try to reduce this volume somehow, either by re-designing the valve or filling the volume with something (foam anyone?).
A picture would be helpful...
Peace,
Pete Zaria.
Posted: Tue Oct 23, 2007 10:58 am
by octane89
I'll have a pic soon and better explanation, but It's a new type of sealing piston Im working on, and where the piston slides back is the pilot volume (obviously), but I don't want to restrict the flow by not having it open enough.
Posted: Tue Oct 23, 2007 11:23 am
by octane89
Here's a pic to help get an idea of what Im doing.
Posted: Tue Oct 23, 2007 11:28 am
by jackssmirkingrevenge
Yes, too much pilot volume is a common problem. A larger pilot valve does help, though it's best to try to reduce this volume somehow, either by re-designing the valve or filling the volume with something (foam anyone?).
words of reason, music to my ears
Octane, the disc that seals with the barrel needs to be the same diameter as your rear disc otherwise it won't be stable and won't work.
Posted: Tue Oct 23, 2007 11:33 am
by octane89
Thats something I figured when I started to make the seals. But I have that part figured I believe. I was just gonna make it the same size, but cut away some of the unnessecary sections to allow it to "flow" back easier.
Posted: Tue Oct 23, 2007 11:40 am
by jackssmirkingrevenge
Apologies for the sh!te paintshop, but you mean like in the attachment? that would work well.
Posted: Tue Oct 23, 2007 11:44 am
by octane89
Yea, essentially the same unless I cut it differently.
Posted: Sat Nov 24, 2007 11:49 am
by wangpushups
This helped me out a lot, thanks.
Posted: Tue Dec 11, 2007 10:03 pm
by f.c
the coaxial design doesn't seem to be showing up just my luck considering i needed it.
Posted: Tue Dec 11, 2007 10:29 pm
by Hawkeye
Too bad that's the only coaxial diagram on here.
Posted: Tue Dec 11, 2007 10:39 pm
by MrCrowley
f.c wrote:the coaxial design doesn't seem to be showing up just my luck considering i needed it.
The co-axial animation is working for me, your talking about the one on the front page right?
Posted: Tue Dec 11, 2007 11:36 pm
by clide
f.c wrote:the coaxial design doesn't seem to be showing up just my luck considering i needed it.
Not sure why it wouldn't be working, Try <a href="
http://gbcannon.com/flash/coax.swf">this link</a>
Also the theory behind all of them is the same, so using another one would probably still let you learn the concept.
Posted: Wed Dec 12, 2007 1:52 am
by f.c
thank you. its great to see a forum where people actually help each other out spudfiles get a 10/10 in my opinion.
Posted: Sat Jan 12, 2008 8:54 pm
by anthony5640
how do i make a piston?