2 vm's together

VM-onster · 01-11-2008, 01:32 AM

Was wondering if anybody had links or info on how to stick two vm's together and work as a pair like a double trouble. I have a few laying around and want to give it a whirl. I need to know the trigger set-up and how to get them both to work together more than the body style... thanks

VM-onster

Titus · 01-11-2008, 01:55 AM

Talk with Dave "Capital Paintball" on here, he has one, which is very sweet

P4p3Rc1iP · 01-11-2008, 09:22 AM

Tape!

capitalpaintball · 01-11-2008, 10:13 AM

I used a plate across the trigger assembly's to mount them together, then I bolted a motor to the side, the shaft has alternating lobes so as the motor spins one gun fires then the other. I can achieve a decent rate of fire but each gun is only shooting half that speed, should avoid any chopping problems.
theres a video in the vm of the year thread, but ill try to post a close up of the triggers working.
Dave

HP_Lovecraft · 01-11-2008, 10:32 AM

VM's are a good gun for a dual conversion because of the ambi cocking knob, and some have the ambi feed.

The lobed method above is pretty easy. I've made offset lobes using nickels with offset holes, held to a threaded rod with nuts.

Another method which I've considered is to get 2 solenoids for each trigger. They are cheap around $5 or so. Get a 3-way switch so one activates when pulled, and one when released. No need for a board, though I'd imagine that it would be trivial to hook one up (seriel, or parrallel). Dwell is no issue since you would be actuating the trigger, and not the sear directly.

However, I wonder about a good mech conversion. Would be easy with pneumatics, but for a mechanical solution? Well, you could link the hammers together. That would be easy, then remove one sear, and have a single sear catch both? Would that work?

Or an alternative approach is to NOT link the hammers together, but have linkage from the #1 hammer "trip" the trigger on the #2 gun.

Another idea I've had is to drill 2 1/8" holes into each valve, so you could link them directly together with a short 1/8" pipe. The benefit would be to hide ugly external gas lines.

nick

infamoussmiley · 01-13-2008, 01:37 PM

Actually, I've been playing with the idea of making a "Dual Body" i.e. a vm body made for two sets of vm-68 internals, but I'm still trying to figure our how to do the trigger system that it would be select fire - semi double shot, or alternating semi fire. I was thinking electronics, but I'm just not sure. I want one trigger, not two and I want the set up to be sturdy and tough...no weak points.
Until, I figure out the trigger system

, I'm holding of on making the dual body.

smiley

HP_Lovecraft · 01-13-2008, 02:06 PM

I remember having this odd idea a while ago:

Basically, expand the valve mount on the side, so that you can divert gas into a second breech/feed assembly. The 2nd bolt can be easily hooked to the cocking knob. Heck, you could add a 3rd breech on the other side (and secure the valve underneath)

Now, in theory you would only then need to make the valve push out more air. This is the tricky part though, since it would require much larger holes, and longer dwells, and heavier springs, etc, etc.

This is exactly how the old China Paintball (RAP4) S4 worked:

Look closely, and you can tell its just a regular VM68, with a 2nd breech attached.

nick

chplnstone · 01-13-2008, 03:07 PM

this brings thoughts of the grinder to mind...

chplnstone · 01-14-2008, 01:34 AM

here's one from capitalpaintball:
S4_LAUNCHER - MCB Gallery

VM-onster · 01-15-2008, 01:53 AM

man those are some sick doubles! looks like a lot of work. gonna take me a while for sure. Still working on the full auto to become more than bursts at a time.

01-11-2008, 01:32 AM	#1 (permalink)
VM-onster Active Member Join Date: Dec 2007 Posts: 265	2 vm's together Was wondering if anybody had links or info on how to stick two vm's together and work as a pair like a double trouble. I have a few laying around and want to give it a whirl. I need to know the trigger set-up and how to get them both to work together more than the body style... thanks VM-onster

01-11-2008, 01:55 AM	#2 (permalink)
Titus Sunstar Paramedics Slave Join Date: Mar 2006 Location: The Group W Bench Posts: 7,093	Talk with Dave "Capital Paintball" on here, he has one, which is very sweet __________________ Celani's Paintball Dealer for APP, CCI, Tippmann, JCS, etc Feedback Willing to be a 3rd party for shipments to Canada and outside of the US, just PM me.

01-11-2008, 09:22 AM	#3 (permalink)
P4p3Rc1iP Active Member Join Date: Aug 2006 Location: Leeuwarden, The Netherlands Posts: 493	Tape! __________________

01-11-2008, 10:13 AM	#4 (permalink)
capitalpaintball MCB Member Join Date: Jul 2006 Location: Coventry R.I. Posts: 444	I used a plate across the trigger assembly's to mount them together, then I bolted a motor to the side, the shaft has alternating lobes so as the motor spins one gun fires then the other. I can achieve a decent rate of fire but each gun is only shooting half that speed, should avoid any chopping problems. theres a video in the vm of the year thread, but ill try to post a close up of the triggers working. Dave __________________ my feedback: http://www.mcarterbrown.com/forums/f...-feedback.html

01-11-2008, 10:32 AM	#5 (permalink)
HP_Lovecraft Post Whore Join Date: Aug 2006 Location: Southern Maine Posts: 2,742	VM's are a good gun for a dual conversion because of the ambi cocking knob, and some have the ambi feed. The lobed method above is pretty easy. I've made offset lobes using nickels with offset holes, held to a threaded rod with nuts. Another method which I've considered is to get 2 solenoids for each trigger. They are cheap around $5 or so. Get a 3-way switch so one activates when pulled, and one when released. No need for a board, though I'd imagine that it would be trivial to hook one up (seriel, or parrallel). Dwell is no issue since you would be actuating the trigger, and not the sear directly. However, I wonder about a good mech conversion. Would be easy with pneumatics, but for a mechanical solution? Well, you could link the hammers together. That would be easy, then remove one sear, and have a single sear catch both? Would that work? Or an alternative approach is to NOT link the hammers together, but have linkage from the #1 hammer "trip" the trigger on the #2 gun. Another idea I've had is to drill 2 1/8" holes into each valve, so you could link them directly together with a short 1/8" pipe. The benefit would be to hide ugly external gas lines. nick __________________ www.montneel.com My Myspace nonsense "the evidence strongly suggests that neither Billy nor Adam (Smart Parts) could have invented the electronic paintgun" -Garr M. King, U.S. Judge

01-13-2008, 01:37 PM	#6 (permalink)
infamoussmiley Seasoned Member Join Date: May 2006 Posts: 512	yeah... Actually, I've been playing with the idea of making a "Dual Body" i.e. a vm body made for two sets of vm-68 internals, but I'm still trying to figure our how to do the trigger system that it would be select fire - semi double shot, or alternating semi fire. I was thinking electronics, but I'm just not sure. I want one trigger, not two and I want the set up to be sturdy and tough...no weak points. Until, I figure out the trigger system, I'm holding of on making the dual body. smiley

01-13-2008, 02:06 PM	#7 (permalink)
HP_Lovecraft Post Whore Join Date: Aug 2006 Location: Southern Maine Posts: 2,742	I remember having this odd idea a while ago: Basically, expand the valve mount on the side, so that you can divert gas into a second breech/feed assembly. The 2nd bolt can be easily hooked to the cocking knob. Heck, you could add a 3rd breech on the other side (and secure the valve underneath) Now, in theory you would only then need to make the valve push out more air. This is the tricky part though, since it would require much larger holes, and longer dwells, and heavier springs, etc, etc. This is exactly how the old China Paintball (RAP4) S4 worked: Look closely, and you can tell its just a regular VM68, with a 2nd breech attached. nick __________________ www.montneel.com My Myspace nonsense "the evidence strongly suggests that neither Billy nor Adam (Smart Parts) could have invented the electronic paintgun" -Garr M. King, U.S. Judge

01-13-2008, 03:07 PM	#8 (permalink)
chplnstone bringing back the dead Join Date: Jan 2007 Location: pensacola, florida Posts: 883	this brings thoughts of the grinder to mind... __________________ happy with me? http://www.mcarterbrown.com/forums/f...-feedback.html sales thread: http://www.mcarterbrown.com/forums/r...new-brass.html myspace: http://profile.myspace.com/index.cfm...ndid=106059990 chivalry isn't dead, just taking a long dirt nap... home from california and tired as all get out...

01-14-2008, 01:34 AM	#9 (permalink)
chplnstone bringing back the dead Join Date: Jan 2007 Location: pensacola, florida Posts: 883	here's one from capitalpaintball: S4_LAUNCHER - MCB Gallery __________________ happy with me? http://www.mcarterbrown.com/forums/f...-feedback.html sales thread: http://www.mcarterbrown.com/forums/r...new-brass.html myspace: http://profile.myspace.com/index.cfm...ndid=106059990 chivalry isn't dead, just taking a long dirt nap... home from california and tired as all get out...

01-15-2008, 01:53 AM	#10 (permalink)
VM-onster Active Member Join Date: Dec 2007 Posts: 265	man those are some sick doubles! looks like a lot of work. gonna take me a while for sure. Still working on the full auto to become more than bursts at a time.

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