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View Full Version : LP Anti Chop Mod for Angel LCD Series


Snertz
05-02-2004, 09:48 PM
If anyone has been following my thread on my LP theory for the LCD generation of angels, they will notice that I've found a setting and setup that will allow the LCD to run at a much lower pressure that it will actually stop on most paint and pinch instead of chopping and making a huge mess of everything. I say most, since if you use some of the ultra brittle tourny paint like ultra evil, it may still chop if it misfeeds; In the end the marker is much gentler on paint, has a lower sound signature, and lower more controllable kick.

CAUTION! This mod requires you to have at least the toolkit with guage, and to pull the entire marker apart. If you have any problems with messing with delicate parts (well, somewhat delicate) or don't have the right tools, seek out someone who have/can do this before attempting.

I will not be held responsible for any damage that may occur to your marker. I will, however, try and help in troubleshooting your marker, so feel free to contact me through PM's or posting here, or through AIM: Aleeous Neo

And with that, Let's get started!

First here are the parts you will need to get, along with the tools that you will need:

Tools:
Angel tool kit <- VERY Important!
Dental pick
-or-
small blunted nail with a hook bent in it (see pic)
Needle nose pliers
Metric Allen key set
AA Guardian
-or-
ASA/Guage combo (see below)
Some sort of lube ie. Angel Juice
Chrono
Decent paint!
Lots and lots of papertowels!

and

Lots of patience! This mod will be neither fast or extremely easy, but anyone with an IQ higher than that of a trained monkey should be able to pull it off.

Parts:
Cocker spring kit, more specifically, cocker valve spring. The lighter, the better.
High flow air system
Possibly a volumizer on the LPR side (Explained later)

Follow A) if you have an external LPR, and B) If you don't.
How to do it:

A) 1.Remove your LPR/Insert peice. The valve spring should follow with it.

2.Replace this spring and replace it with the lightest valve spring in the spring kit

3.Reassemble everything, putting lube on all O-rings so you don't run the risk of tearing them. Set Dwell at 14.

4.Turn the LPR to Zero, and the minireg output to 200psi. Turn the snap ring all the way out, until there is almost no resitance in moving the hammer forward, but not so much that there is no resitance.

5.Without paint, turn up lpr slowly while pulling the trigger, until the marker fires.

6.With paint, fire over the chrono slowly, while turning up the LPR. Keep an eye on the velocity, and when it shows no large increase in velocity, stop adjusting the LPR. Lock the LPR at a slightyly higher pressure.

7.What velocity is the marker shooting now? If it is too low, turn up lpr slightly, then while shooting slowly over the chrono, turn up the minireg until you see no increase in velocity. Repeat turning up the LPR and minireg until you hit your target FPS. Now for the possibly messy part..

8.Tape a ball halfway into the breech, and fire the marker once. With any luck, it'll stay intact, and the bolt will just bounce off the ball. If it does bounce, pull 4 more times. If the ball is intact, then move on to step #10. Now if the ball splattered like a smushed melon, then move on to the next step.

9.Increase the dwell by 2 points, and repeat Steps #4 - #8. If it still breaks, then keep on increasing the dwell by 2 points and repeating the steps until it doesn't.

10.Readjust the snapring as described in the manual. Put a hopper on, and rip of a string of paint. There should be no noticable drop off at all, provided that your air sytem and external LPR can keep up. Congrats, you made it through, and your marker is now setup to pinch!


B) 1.Plug the guage from the toolkit onto your angel. If it is around/on 50psi, skip to step #3. If not keep on following this step. Follow the instuctions given in the manual on how to remove your LPR. It should look like the first pic. The circled part is the stem that we will adjust. The second pic shows what they would look like if seperated. What we want to do here is turn this stem in (clockwise) very slightly, about 1/4 turn.

2. Reassemble the marker with the lighter valve spring and put the guage from the toolkit on the LPR side. Set minireg output to around 400psi, and check where the LPR pressure is. If it is at or around 50 Psi (kinda unlikely unless your lucky rabbits foot is working over time) then you're done and can move on to the next step. If it is above 50 Psi, then take out the LPR again, and turn the stem in a little more. Reassemble and check the pressure, repeating until you get around 50 psi. If it is below 50psi, then take the LPR out and turn the stem out slightly counter-clockwise. Repeat until you get around 50psi.

3.Set minireg output to around 200psi. Turn the snapring all the way out, until you feel almost no resitance in moving the hammer/bolt combo. Set the dwell to 14.

4.Gas up the marker and try firing it. It should cycle fully. If not, add a shim to the LPR and try again, repeating until the marker cycles. You shouldn't need to add too many or any in at all.

5.While firing slowly over the chrono, slowly raise the minireg pressure until you see no rise in FPS; At this point any adjustment to the minireg should result in a decrease in FPS.

6.Where is the FPS sitting? If it is above your target (unlikely), decrease the minireg output until you hit your target fps. If it is below your target FPS, add a shim to the LPR and increase the minireg until there is no increase in FPS (kinda like step #5) Repeat this until you raise the FPS to your target FPS.

7.Now for the potentially messy part. Tape a ball halfway into the breech and pull the trigger once. If you're lucky, it'll remain intact; pull the trigger 4 more times, and if the ball remains intact, then you're pretty much done. Take out the taped ball and put a hopper on. Rip off a string of paint; there should be no noticable drop off at all. If there is, try adding a volumizer on the LPR side, to compensate for the lower pressure it's running. Move on to step #9. Now if your gun just made a mess all over the place, then move on to the next step.

8.Take all the shims out of the LPR, reset the minireg to 200psi, and up the dwell by 2 points. Now repeat steps #5 - #7. You should eventually hit a point of balance between the Dwell, LPR pressure, and minireg pressure that allows for pinching. Move on to the next step.

9.Readjust your snapring by following the directions given in the manual. You're now done, go have fun with your newly revamped angel!

And that is it! Long time consuming mod to do, but a pretty cheap mod that adds another layer of protection. Combine this with the new JAM bolt and any ACE system and your angel will never ever chop again!

Buh buh buh! Another one bites the dust!
-Snertz

Notes:
If you're using an adjustable air system with either a gutted minireg, or a gasthru, then set the output from the air system to the psi's specified in the instructions for the minireg output.
An easy way to check the output from your minireg is to take a 0-1200psi guage, put it on a ASA, plug the rest of the holes on the ASA, and screw the minireg onto the ASA, then gas it up.

C.Carles-AOG
05-02-2004, 10:44 PM
How efficient is this?
I'll just wait for the MT retro. Also, what if the minireg is gutted? The good news is this mod seems rather harmless and completely reversible.

Snertz
05-02-2004, 10:57 PM
Should be just as efficient as before. I assume that if the minireg is gutted, then the user is using an adjustable air system, which at that point should turn the output of that air system to the PSI settings specified for the Minireg.

rise
05-02-2004, 11:51 PM
another thing to add, you don't have to manually change your lpr (as in step B:1), you can remove all of your shims, dropping the psi to about 40ish. if you do it manually, i think you'd have to re-locktite it so it won't move out. but yea....you could just remove the shims if you were lazy like me :)

Snertz
05-03-2004, 12:00 AM
Good point! I neglected to mention that you want it to be at 50psi with out any shims, but to check before you tear it all apart! Edited to mention this.

Thanks!

Vantage_TeS
05-03-2004, 09:32 AM
Found a couple things that could fixed up, I will rework it tonight hopefully and PM you.

Jose_Rico
05-03-2004, 11:47 AM
My only concern is how does this mod affect efficiency?

Vantage_TeS
05-03-2004, 11:55 AM
Theoretically it would remain the same. While you are using less air pressure per shot, you are using more air volume so it balances out. My guess is it would be pretty close to the stock efficiency, give or take 100 shots.

Watch this space for more surprises :)

Snertz
05-03-2004, 05:57 PM
Yup, that was the first Q asked, above, by C.Carles

More surprises eh?? :P

RonnyMcDYO
05-07-2004, 04:44 AM
Actually if you think of this you would be increasing air efficiency, not a whole heck of a lot, like Vantage said. Ive actually been looking to do this to my IR3 and I think ive found a spring much lighter then the cocker one you have there. It can be found in the Evil Angel Valve kit, along with a larger valve guide and plastic valve stem. Just though id point that out to some of ya.

collin
05-14-2004, 04:29 PM
and this willl stop yourgun from chopping completely

Snertz
05-14-2004, 07:24 PM
This will pinch most paint. THe only stuff I don't think it will pinch all the time is something very very brittle like Ultra Evil. I haven't gotten to do testing with some very brittle paint yet, but it pinches everything else I have tried, all mid grade.

RgMekanic
10-10-2004, 11:59 PM
hate to dig up old threads, but this intersts me.

Did anything ever come of it? Did anyone try it?

gilgo
10-11-2004, 05:49 AM
Does it cycle as fast as before? I know lcd´s are capped at 20bps but can you hit that after this mod considering the lower pressure to the ram? And if so is the fps stable when hitting 20bps?

lcd99shooter
10-12-2004, 05:13 PM
hey, i just got my lcd and it chops like a mofo can u tell me where to get the JAM bolt and ACE system.thanx

lcd99shooter
10-12-2004, 05:14 PM
where can i get a jam bolt and ace system

-=Pandemonium=-
10-12-2004, 05:25 PM
you can get anti chop eyes with the Fly Conversion, done by the master techs.


Im not exactly sure where to get the Jam bolt...but i have one lying around, but i dont need it since i got the fly conversion and never chop.