mcarterbrown.com  

Custom Projects / Custom Questions How do I customize? What do I customize? What do I use? Share you experiences and faults here!

Reply
 
Thread Tools Search this Thread
Old 03-03-2013, 09:40 PM   #1 (permalink)
GMO Population control
 
RatFink's Avatar
 
Join Date: Jan 2008
Location: Under a De Facto government

RatFink's Counter Sniper (Finished! 8/20/14)

At long last, it's finally finished, as I had originally envisioned it. It's tuned well now, runs on unregged CO2. It's easy to aim with Wally's awesome drop stock, it puts the barrel right in front of your eye and it shoots soooo straight. I have to say I am very happy with how this turned out.



This has been an ongoing project of mine for over two years. I have picked at it a little at a time and slowly, but surely, it's almost done. In an effort to get psyched for SPEW West and get this thing done within the next month, I'm throwing up my build thread. I have made most of the parts for this marker myself. My goals were to build an old KP style brass bodied marker that is as advanced as possible Bringing some nostalgic style to a Half blocked Sheridan based Sniper type marker. Two main goals of quiet and light weight.
Here is where I am now.

I started by designing a direct feed slip over feed neck with detent that fit a clamp I picked up on the cheap.

I then talked to Ty and picked up some .679 barrel stock as well as some Sheridan bottom tube. I ported the barrel with progressive sized holes. I milled and drilled the bottom tube according to what needed to be done.

Ty had some great ideas, and we talked for quite a while throwing ideas back and fourth. when we were done, I ended up going with a cartridge valve from an air rifle.

I took the front of the valve off as it was accommodating for 12 gr. CO2's and I just wanted a small expansion chamber to tap into. I then dug up an old bent titanium landing gear strut.

I then whittled a hammer from said strut.

I then embarked on coming up with a sled, as I saw no other option for my build, but to go with a half block style.

with the sled moving forward, I needed a bolt. I had some Delrin rod stock to turn down. I added a detent and drilled in a fixture at angle to incorporate a Venturi style porting, hoping to cut the standard brash Sheridan sound signature down a bit more.

I happened to have some old Titanium brake pad pins from a race bike I was able to easily turn into a bolt pin.

I got tired, so I took a nap.

I wanted the bottom tube to be as short as possible to keep it tucked tight, so when I had my lengths set, I started turning out my pump handle. this turned out to be quite the trick. Long story short, I made the handle two piece, so the front half would index to the inside diameter of the lower tube, enabling me to add a return spring and the hollow rear section was knurled and turned out to register on the O.D. of the lower tube. The result is a slop free smooth pump handle turned from Delrin.

Once I got the hot work done, this is basically what I had. Titanium was used for the pump rod as well and the threads were turned with a single point cutter on a lathe.

It was time to move on to the trigger group. I came up with my basic design following Cocker sear and hammer geometry. I had to adapt the geometry to work in the wood and this is the rough of what I have come up with.

I still have some more drilling and tapping in order to get everything to finalize, but here is the trigger group on the barrel assembly.

I needed to make a nice trigger guard that would re-locate the through holes in the wood to coincide with my new trigger group, so I came up with this. It sort of sandwiches the wood between the guard and the trigger group.

3/10: This weekend I drilled and tapped for both the cocker detent, and the 1/8 pipe thread for the air source. I aired it up with no leaks. I got it to dry fire and it sounded pretty weak. I may need a softer valve spring.

I'll post up more pictures as I make progress, and I hope to make a lot of progress fast now.
3/28/13
I made a little more progress. I stopped by ANS the other day and picked up a nos Cocker RVA for a few bucks. I have always liked how they did these.

I only wanted to scavenge this part form it.

Then it was back to the CNC for some more work on the Counter Sniper's RVA body.

The Mill hiccuped a few times while profiling the back block, but it's nothing that won't buff out. I'm going to leave it raw cut for now though.

4/3/13 I burned out the ASA today. It took most of my day and it's not finished with all the milling I want, but it's plumbed through and ready to go for the weekend.

Nailed down to the wood...

I ordered a Dyna valve from Palmers the other day, so basically just waiting for that to come for a final assembly, test and tune. SPEW III is this weekend and I really want to use this beast.
4/4/13 Damn USPS... I ordered my Dyna valve on Monday, here it is Thursday and no valve in the mail yet. I only live about six hours from the place, you would think it would have been here by now. I need some time to get it tuned...

Well, I went off to SPEW with the beast just last minute slapped together. I had to regulate the input pressure down to get the velocity up to playable, but I had a blast with it on Sunday and even scored two eliminations in the very first game I used it in, which I take as an omen. This thing has a great destiny ahead of it...
Edit update: My new valve arrived and it was even the aluminum body I was looking for.

I ported the transfer and left everything else alone. I threw a Palmers dyna valve in it, the green spring I was last using, mated it to my transfer chamber and right out of the box it shot 320fps! I was happy I had fixed the problem that I had created by boring the old valve and creating too much surface area at the cup seal causing low velocity.

I did a little more work to the trigger group while I had it apart as well.
Update
I had Wally do up a nice piece of wood for me so that I can get the drop I wanted along with a more vertical grip, so I can keep my elbow tucked in. It's perfect now, puts the barrel right in front of my eye and my goggle/mask doesn't hit the butt stock.


After two years, I finally profiled the ASA like I had originally wanted…




I would like to thank Sean Chip, Woouulf and Ty Mcneer for all their help along the way.
__________________
Quote:
Originally Posted by Scougar View Post
I still don't get the obsession with pump, as I love paintball in any form nowadays, I just can't tolerate cheaters and morons with a gun who think the objective is to cause as much pain as possible.
Emotional pain.

Quote:
Originally Posted by PitBull View Post
i think the phantom needle is in my arm for good now..
Feedback

Last edited by RatFink; 08-22-2014 at 11:57 AM.
RatFink is offline   Reply With Quote
Old 03-03-2013, 09:47 PM   #2 (permalink)
but it do
 
Bleeds's Avatar
 
Join Date: Mar 2008
Location: Lexington, VA
Send a message via AIM to Bleeds Send a message via Yahoo to Bleeds

Fan of EMR
Brass N Wood Fan
Kilt Fan
Palmers Fan
That looks simply amazing! Can't wait to see this finished!
__________________
My Feedback
SpecialOps Vest [L] F/S/T

"There isn't much that I feel I need, a solid soul and the blood I bleed."
Bleeds is offline   Reply With Quote
Old 03-03-2013, 10:25 PM   #3 (permalink)
Post Whore
 
ksciupider's Avatar
 
Join Date: Nov 2010
Location: NC

Brass N Wood Fan
Palmers Fan
RTP Fan
You sir, are an ARTIST! Thats all im going to say, the gun looks amazing!
__________________
Quote:
Originally Posted by Party View Post
They always get moody after you try to **** with them.
Now what's a cocker?
Women are a lot like Pokemon, it doesn't matter how good you are, You cant catch any if you don't have any balls.

Ksciupider's Feedback
http://www.mcarterbrown.com/forums/f...-feedback.html
ksciupider is offline   Reply With Quote
Old 03-03-2013, 10:40 PM   #4 (permalink)
MCB Member
 
i-bunker-u's Avatar
 
Join Date: Dec 2010
Location: Ontario Canada

i came to this thread again and Im now changing my pants for the second time
__________________
Current Sales




I live in Canada but have a USA address as well
i-bunker-u is offline   Reply With Quote
Old 03-04-2013, 09:54 AM   #5 (permalink)
MCB Member
 
Spider!'s Avatar
 
Join Date: Dec 2008
Location: Houston, TX

That's great!

Love the titanium bits with the brass.

I've been hoping to see more CNC stuff on sheridans. I know brass parts would be very expensive as short run items, but there are a lot of possibilities between wood, brass, CNC, and solder.
__________________
My Feedback
Spider! is offline   Reply With Quote
Old 03-04-2013, 04:29 PM   #6 (permalink)
MCB Member
 
Join Date: May 2008

love the look of the feedneck and bolt/half block system.
__________________
My MCB feedback: http://www.mcarterbrown.com/forums/f...ml#post2245661

For Sale: http://www.mcarterbrown.com/forums/m...ml#post3163559

wanted: cocker beaver tail, reg extender, black anno palmer reg in good shape, ANS 90 frame, mine rail that can be mounted backwards for more length (dovetail).
James_Blond is offline   Reply With Quote
Old 03-04-2013, 04:59 PM   #7 (permalink)
Brass Monkey Customs
 
tymcneer's Avatar
 
Join Date: Oct 2006
Location: Baltimore MD

Brass N Wood Fan
Kilt Fan
How much to make a run of those feed necks?

Ty
__________________

Brass Monkey Customs

Brass Freak compatible and Equation inserts in .665, .670, .675, .678, .680 and .685

Still selling brass tubing, with .678 barrel stock now available!

My feedback: MCB - eBay - AO
tymcneer is offline   Reply With Quote
Old 03-04-2013, 06:00 PM   #8 (permalink)
Wookie D*ck
 
russc's Avatar
 
Join Date: Apr 2006
Location: Vancouver, BC

Can't say I enjoy using vert fed rifles, but great work!
__________________
Quote:
Originally Posted by agentSmith View Post
oldschool play is about sportsmanship and respect, oldschool gear is available on Ebay.
russc is offline   Reply With Quote
Old 03-04-2013, 06:18 PM   #9 (permalink)
Ask me about my
 
Skibbo's Avatar
 
Join Date: Oct 2009

wow. amazing. one of the nicest sheridan's i've seen in a long time!
__________________
Quote:
Originally Posted by heinous View Post
i find this easy to masturbate to
Designer of the first legit looking ego pump, the EgoP!
BUY IT HERE!!


Tinkerer/ Pump lover
Team Akkadian Paintball Squad
OK D-Day '09 - German 716th IR
FEAR THE TREES!
Feedback:
http://www.mcarterbrown.com/forums/f...ml#post1067010
Skibbo is offline   Reply With Quote
Old 03-05-2013, 08:31 AM   #10 (permalink)
GMO Population control
 
RatFink's Avatar
 
Join Date: Jan 2008
Location: Under a De Facto government

Thanks for the kind words guys. Just as planned, I'm reaping motivation and moving forward. A few more details and the trigger group will be finished.
Ty, I could in no way produce a run of feed necks. I don't have the time, or the resources. I would be willing to share the model with anyone interested. The odd part would be the lever clamp. I found one from some old stock bnib that didn't fit any relevant marker, picked it up cheap and just threw away the neck.
__________________
Quote:
Originally Posted by Scougar View Post
I still don't get the obsession with pump, as I love paintball in any form nowadays, I just can't tolerate cheaters and morons with a gun who think the objective is to cause as much pain as possible.
Emotional pain.

Quote:
Originally Posted by PitBull View Post
i think the phantom needle is in my arm for good now..
Feedback

Last edited by RatFink; 03-10-2013 at 08:56 PM.
RatFink is offline   Reply With Quote
Reply

  mcarterbrown.com » Custom » Custom Projects / Custom Questions

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Forum Jump


All times are GMT -4. The time now is 08:46 AM.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO
© MCB Network LLC