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Machined PCP
Posted: Tue Apr 17, 2012 1:59 pm
by Goats spudz
Heres my new pcp that im building, im getting the barrel next week and the grub screws to hold the valve in, all the parts were machined in a Hurco TMM10 except for the custom valve head which was made on a Myford super 7, also i will blue all the steel parts when im finished and hand craft a walnut stock or maybe a milled aluminium one.
Posted: Tue Apr 17, 2012 2:07 pm
by Brian the brain
Gasp!
Can't wait to get my butt kicked!
Posted: Tue Apr 17, 2012 2:10 pm
by Goats spudz
Brian the brain wrote:Gasp!
Can't wait to get my butt kicked!
!
Posted: Tue Apr 17, 2012 2:16 pm
by jackssmirkingrevenge
Yay for machined projects, looking forward to see the finished results
Posted: Tue Apr 17, 2012 2:20 pm
by Goats spudz
jackssmirkingrevenge wrote:Yay for machined projects, looking forward to see the finished results
Did you spot the epoxy on the check valve?
Posted: Tue Apr 17, 2012 2:23 pm
by Brian the brain
Why the poll though?
or should I say:
Y U NO CONFIDENCE?!?!?
Looking supersweet!!
Posted: Tue Apr 17, 2012 2:30 pm
by jackssmirkingrevenge
Goats spudz wrote:Did you spot the epoxy on the check valve?
No reason why high strength adhesives and machining can't go hand in hand
Posted: Tue Apr 17, 2012 2:46 pm
by Goats spudz
jackssmirkingrevenge wrote:Goats spudz wrote:Did you spot the epoxy on the check valve?
No reason why high strength adhesives and machining can't go hand in hand
seen as it dosen't bare pressure, well yes
Posted: Tue Apr 17, 2012 3:22 pm
by Labtecpower
nice work
I hope I can make something similar after the summer holidays!
Posted: Tue Apr 17, 2012 4:25 pm
by Gun Freak
Looking good man! Looking forward to more!
Posted: Tue Apr 17, 2012 4:33 pm
by Goats spudz
Did a quick function test at 70 psi held the valve in with my hand and its quite powerfull, bear in mind this things going to be run at 1500 psi also the grub screws and m6 tap im getting tomorrow and the 24" rifled barrel in .22 im getting next week for free with a steel breech courtesy of a good friend who owns a gun shop
Posted: Tue Apr 17, 2012 7:13 pm
by Zeus
Good work, but you said you'll blue it. I'll change my vote if you don't.
Posted: Wed Apr 18, 2012 1:50 am
by Goats spudz
Zeus wrote:Good work, but you said you'll blue it. I'll change my vote if you don't.
I did a test on some other tube it gives a sexy firearm finish and is polishable
edit: ok, just got back, i have drilled the grub screw holes and tapped them.
Posted: Wed Apr 18, 2012 1:35 pm
by Brian the brain
The idea of the tube inside of a tube is simply brilliant!
It solved my problem..
I've got the solution for a balance act between a chambersealing valve and a hammervalve inside a tube.
I could not figure out how to get the sealing edge inside of the main tube for the piston to seal on.
the hammervalve will be counterbalanced in the rear of the piston and the diameter will be balancing out the main piston to about 80 to 90%,
Not only cutting down the pilot volume to less than what you'd think would be minimal but also scaling up the pilot valve massively compared to this reduced volume..without making it harder to open...
you've just helped me to figure it all out!!
please excuse me for wandering off topic a bit.
I'll be watching your build like a hawk!
Posted: Wed Apr 18, 2012 2:49 pm
by Goats spudz
Brian the brain wrote:The idea of the tube inside of a tube is simply brilliant!
It solved my problem..
I've got the solution for a balance act between a chambersealing valve and a hammervalve inside a tube.
I could not figure out how to get the sealing edge inside of the main tube for the piston to seal on.
the hammervalve will be counterbalanced in the rear of the piston and the diameter will be balancing out the main piston to about 80 to 90%,
Not only cutting down the pilot volume to less than what you'd think would be minimal but also scaling up the pilot valve massively compared to this reduced volume..without making it harder to open...
you've just helped me to figure it all out!!
please excuse me for wandering off topic a bit.
I'll be watching your build like a hawk!
Also if you dont own a shop compressor you can fill a soda stream tank and reg it down like i did, eliminating the need for a first stage!
