Paintball

[D G]

I'm ressurecting my mech autococker. Efficiency is nice. Speed doesn't matter. The goal is to have a smooth shooter that is as quiet and recoil-free as possible. Here's what's in my parts box:
. 2k right feed body
. cp shorty reg w/gauge
. dye single finger hinge frame
. belsales roller sear
. ccm 3-way
. palmer rock reg
. wgp sto ram
. aka lightning bolt
. tech-t delrin back block
. belsales rex dialer hammer
. aka tornado valve
Like I said, my goal is to achieve as quiet and as recoil-free operation as possible. I know a well-ported barrel is important and I have that taken care of. Just wondering if there's anything else I can do as far as parts before it's put together.

[russc]

I don't recommend the DYE Frame. They are very uncomfortable to me due to the unrounded backstrap, they make the gun taller, and have a snappy pull compared to the smooth pull of a slider. The way the trigger guard is set up also prevents wraparound grips from being used properly.

They are also expensive because they look cool and can be auto-triggered for pumps.

[drg]

Originally Posted by russc

The way the trigger guard is set up also prevents wraparound grips from being used properly.

Huh?

[D G]

with the roller sear, i love the trigger pull on the dye frame. i also use stock wgp grips, which have different finger groove spacing, allowing for a comfortable grip. photos demonstrate better (not my ressurection gun)

dye stickies on the hinge would leave the middle finger cramped. wgp grips have more space for the middle finger and don't cradle the pinky, allowing a good grip with this frame. the trigger frame is actually the one part i'm good with. it's other parts i'm not set on.

[Stainlessbutcher]

I'm waiting on one of those Dye Swingles myself. I made a deal with ChefDave for one and I can't wait to get it on my cocker. As for your set up, if you keep the reciprocating mass as light as possible, you shouldn't have significant recoil. If you can find a good stock(old three piece) wgp ram and polish the bejeezus out of the innards, they work well on lower pressures thus dampening the "slam" of the back block coming back atcha and reducing a little bit of the recoil...that's been my experience anyhow. Low pressure/High volume for propelling the ball is debateable till everyone is blue in the face. I can go either way and it doesn't make a lot of difference in recoil. However, LP does suck down a lot of gas/Co2.

[brycelarson]

I've got a 12" Dye Stainless Boomstick - it weights about 2 pounds.... It's a great way to reduce recoil.

I've got a Dye single swing on one of my snipers - great feeling little trigger. I'm sure it would scream as a semi - nice short pull.

I tend to play semi with my index finger along the side of the gun - pull the trigger with my middle finger - so the slightly small lower portion of the grip isn't a problem.

The lighter the bolt and main spring you can get away with will lower the pressure you have to run your LPR - which should keep things from kicking around too much.

You might also want to check into a light weight back block - maybe a milled one.

[D G]

my back block is delrin and weighs almost nothing. the aka bolt is the older aluminum version, so i may actually look to update that with something delrin. i was looking at the low blow bolt. even if it doesn't do what it claims to, it's still light.
my next thought is getting a qev. my undestanding is that it'll allow for faster cycling. i don't care about speed, but i take faster cycling to mean less pressure needed or just a lighter touch. i'm not sure.

[brycelarson]

actually, the faster cycling is going to give you more kick.

Basically the formula for kinetic energy is 1/2 Mass x Velocity(squared)
so making parts move faster will increase the total impact of the moving parts.

I think if you're staying single trigger and not an e-grip then the QEVs will have negligible impact. You really only need them to speed things up when you're really screaming - you know the 15bps+ thing.

[D G]

i thought that QEV's on a mech will just give it a snappier, smoother trigger feel, not really much speed. i don't know how to go about plishing the insides of my ram (and don't trust myself not to mess it up somehow), so i thought about picking up an eclipse ram, as they're supposed to be the smoothest rams out there.
also, my aka bolt is the older, nickel plated non-milled version. it's about the same weight as the stock bolt, perhaps even a bit heavier. the other decision i have to make now is if it's worth picking up a delrin one.
these wouldn't be cheap mods and i have no experience in fine tuning cockers, so i'm just wondering if they're even worth it on a mech cocker. as it is now, the gun has a fairly short and smooth trigger pull and operated at around 200psi. i can say that i'm happy with that, but what if there's better? ...

[Railgun]

QEV's won't give you a snappier trigger feel since the ram isn't hooked to the trigger. But you already knew that....

There was an excellent thread on mechanical setups and using QEV's over at Custom Cockers. Van Tripes jumped in with some advice on a setup using only 1 QEV and the results were that you could use less pressure from the LPR to cycle as fast as without it and more pressure but now with the lower pressure and some fine tuning it's possible to set it so you only pinch a ball rather than chop it. Using a delrin bolt so the reciprocating mass is less would likely be part of that magical setup. It may also have required the use of his special ram with the larger shaft that uses full force for cocking but reduced force due to the ram design for the ball loading cycle. I can't remember. You'll need to go and search over there for something like "single qev" or some such within the mechanical forum.

My plan is to order a ram and QEV from him and see how it works out.

Oh, and with the reduced pressures and forces used for recocking the "kick" is reduced as well.