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Posted: Sun May 11, 2008 4:10 pm
by LynyrdSkynyrd
Thats not a bad idea.
As far as materials are concerned we were planning on using Ultra-High Molecular Weight Polyethylene (UHMW) for the back plate and the piston. everything else is just scheduled pipe fittings. UMHW is oil filled and very slick (and cheap).
I've been getting split impressions on machining it though. Some people say its a bitch to machine others say is easier than most plastics.
Posted: Sun May 11, 2008 4:32 pm
by Velocity
LynyrdSkynyrd wrote:Thats not a bad idea.
As far as materials are concerned we were planning on using Ultra-High Molecular Weight Polyethylene (UHMW) for the back plate and the piston. everything else is just scheduled pipe fittings. UMHW is oil filled and very slick (and cheap).
I've been getting split impressions on machining it though. Some people say its a [female doggy] to machine others say is easier than most plastics.
I've heard that UHMW Polyethylene is very easy to machine. Also heard good things about Delrin (don't know if they are different; believe they are related).
Posted: Sun May 11, 2008 5:22 pm
by LynyrdSkynyrd
UHMW and Delrin are the "self-lubricating" type plastics. Delrin is a little on the expensive side. And it doesn't have a high impact strength either comparative to UHMW.
Posted: Sun May 11, 2008 6:01 pm
by DonTheLegend
Modified piston, along the lines of what gippeto suggested. Reduces weight without increasing the pilot volume.
Posted: Sun May 11, 2008 6:35 pm
by jrrdw
Don, have you built any of this yet?
Posted: Sun May 11, 2008 6:53 pm
by DonTheLegend
No, haven't bought materials yet either.
Posted: Sun May 11, 2008 9:47 pm
by LynyrdSkynyrd
we're just kinda playing with ideas right now.
Posted: Mon May 26, 2008 3:10 am
by mike1010
what design program did you use to make that image it looks great?
Posted: Mon May 26, 2008 10:29 am
by DonTheLegend
Thanks, we used NX 5 to draw everything, and then we just took images of the screen with snipping tool (Vista only, I think).