LPR no worky

[corrupt123]

recieved my kit this week. began assembly a few days ago and ran out of air.

so today, i had (took) the afternoon off school, and i literally spent close to, if not as much as or more than 5 hours at the field, trying to get it set up.

i was aiming for the settings as fallows.

LPR @ 40-45 PSI
DWELL @ 8
inline @ 200-280 (hovered around 240/250 mostly)

now, i just couldnt do it! something is wrong, or i have done something wrong, with the LPR and the external LPR adjuster. i set the stock LPR to 100 psi, and than installed the external adjuster. i noticed, when screwing in the screw to turn pressure down, it would take a VARY long time for the needle to go down. normal?

anyways, i just could not get in the area of 40psi ! of the 5 hours i spent, between 3 and 4 i spent on the LPR adjuster alone. everytime i got it to around 40 psi, it would eithor creep down (FSDO) or, when i fired (which would be a FSDO shot anyways) it would jump up 5-10 PSI and stay there.

i am SURE i am not getting FSDO due to any other reason. i had the gauge on the ENTIRE time, and i watched the pressure creep down. even when i had it at i think 44psi, it would creep down to 41 PSI, and this would be enough FSDO to make my first shot in the area of 140 fps, and my second in the area of 260.

i also noticed, when i ripped on the gun (dryfire) the lpr would climb higher and higher. not by much, probably go up 2-3 psi for every 3 seconds of continious, fast fire, but climbing none the less.

i experimented by adding and removing shims at random, i was thinking "the adjuster cap puts pressure on the piston to lower LPR pressure, so if my pressure is creeping down, i need more pressure pushing back aganst the cap" this led me to putting more and more shims in. at this point, i think have something in the area of 20 shims inside my LPR. the result? well, i find that i can get down to 40PSI, but again, it just doesnt work. and, when i screw in the adjuster screw even 1/4 of a turn from the point where it is at 40 psi, it drops down to 5 psi. and a fast drop too, not slow like i had mentioned above.

i am royally pissed. i got everything working, for the few shots i took, i was running @ 40 psi without blowback or nothing. completely fine. with the exception of FSDO.

can ANYONE help with this? i am thinking maybe a softer spring in the LPR adjuster cap. or removing the spring completely? i figure complete removal will hold the piston stiff where it should be. and the piston moves away from the front of the gun when recharging, so no problem right?

lastly, i have heard of some people drilling through the center of the brass point to increase airflow. true or false? could it help? i'll do it in a second if it will help.

oh, and i'd like to add. as much as i know i could just pop off the adjuster cap and use the stock LPR, i just payed $155+ for a whole kit, so i am using a whole kit.

[corrupt123]

just thinking about it. could it be the internal o-rings on the LPR piston, etc???

[Scott7d]

about your lpr creeping and how slow it goes down, when turning it down, mine does the exact same thing.

Im kinda mad too because of everything I bought, im only using the hammer. is that my choice you ask? No its not, because i dont like having FSDO, shootdown, or valve orings busting.

Evolve has been REALLY cool about every thing though. But i dont think the molded cup seal they are sending me will fix the rest of the probs. I am in NO WAY spending money on more "upgrades" that came out 2 weeks after I bought the kit. If i cant get everything workin, look for a used kit to be on sale

EDIT: also try your LPR at 50psi till things wear in, thats what it reccomends in the instructions. I think some of peoples probs are trying to run LPR's too low right off the bat and not waiting, just because evolve says they were able to run one at 35, doesnt mean EVERY gun will be ok at 40, or even 45, at least not in the early stages.

[corrupt123]

got my kit used, but i soppose you're right

by the end of fed, it had better be running at 40 psi.

[corrupt123]

ok, i want everyone who owns a kit to reply to this

how consistant are your LPR's with the evolve kit? i honestly think this is just a case of bad consistancy. considering you're adjusting the pressure in an unordinary way, and with a spring (not consistant) i am not surprised at the fact that some people are having problems.


unless it's the gauge, which i highly doubt, i am finding that the LPR w/ the evolve adjuster has a consistancy of about +/- 4 PSI, when you rip, it will climb higher and higher, when left to rest, it will dropo back to or close to the original pressure, this is however, over a timespan of 20+ seconds. it may drop a few PSI if left to sit for a really long time.

is there any chance evolve would like to comment? im curious so see what kind of consistancy the LPR was giving u guys when u were running flies @ 35 + DWELL 8. i think experimentation needs to be done with the springs, and i think that will help. or re-designing somewhere else.

[corrupt123]

just shot in my basement. nothing went right chop explode break one after another. only at high ROF too. im seriously pissed. this weekend is the last chance i give it, only because the paint today may have been bad.

[sharps990]

just shot in my basement. nothing went right chop explode break one after another. only at high ROF too. im seriously pissed. this weekend is the last chance i give it, only because the paint today may have been bad.

this happened to me the first time i tryed it

from what i have heard it has happened to other people too

dont worry about it...just keep shootin and tunin ur gun till you get it right. there is a good 2000+ shot break-in time for these things and like others have said most ppl are taking the kit out of the box slapin it on the gun and expecting to run at 35 psi

i ran my kit at about 58 for a good 2 cases till it broke in

sharps

[corrupt123]

well i got the kit used. the guy i got it off said he's run it for about 4 cases of paint.

like i said, im giving it another shot. than, i will eithor give it one more with the stock LPR, or retire the whole thing for a month or two. let me cool off, just aswell, i have a tourney mid march and berely enough funds as it is to play. cant spend my spare time and money trying to get this workin.

lastly, i'd like to add. im thinking about whipping up something on a lathe of my own. but i have a question. the LPR piston, when left in rest ungassed, is a fair distance from the shims (distance equal to that of the spring stack) when gassed and being used, does the piston move away from the front of the gun? compressing the spring stack? if so, that means that the evolve adjuster uses a mechanical connection between the brass arm in the adjuster, and the brass tip that pushes aganst the piston, and the spring is only there for stability when the piston moves away from the adjuster, so as to keep the peices aligned, and precent anything from falling out of place?

if this is correct, im thinking about whipping up a little longer arm or tip (part that presses aganst the piston) or both, and replacing the stock spring with a much lighter one, but one that is still strong enough to keep tension so as to keep the paices aligned. effectivly, this should help. a softer spring will allow the piston to return to it's position faster, better, and more consistantly. im thinking the stock springs are a little too stiff, that, and/or they're just crap. there have been a few people saying that their springs arent straight, or even constructed well for that matter.

anyways, sharps. what kinda settings are you running now ? just curious as to what they can get to if you're patient. aswell, u using the WHOLE kit, i.e. volly, valve, hammer, and the external LPR adjuster?

[El Pirata]

ok, i want everyone who owns a kit to reply to this

how consistant are your LPR's with the evolve kit? i honestly think this is just a case of bad consistancy. considering you're adjusting the pressure in an unordinary way, and with a spring (not consistant) i am not surprised at the fact that some people are having problems.


unless it's the gauge, which i highly doubt, i am finding that the LPR w/ the evolve adjuster has a consistancy of about +/- 4 PSI, when you rip, it will climb higher and higher, when left to rest, it will dropo back to or close to the original pressure, this is however, over a timespan of 20+ seconds. it may drop a few PSI if left to sit for a really long time.

is there any chance evolve would like to comment? im curious so see what kind of consistancy the LPR was giving u guys when u were running flies @ 35 + DWELL 8. i think experimentation needs to be done with the springs, and i think that will help. or re-designing somewhere else.
Unfailingly if a pressure drops without user input then there is a leak! Now if the pressure gets higher then something inside the reg is not doing it's job. It could be something wrong with the evolve kit or it could be something wrong with your LPR or how it was assembled the last time.

I'd remove your lpr and inspect your o-rings as well as add some grease to your lpr o-rings. I'd also add some grease to the o-ring on the evolve lpr volumizer. Aster doing this dis the leak stop? Did the creaping pressure stop? If not let us know.

[Trigga Nometry]

corrupt - Do me a favor and measure the length of your adjuster screw on the Newton LPR Cap. My screw is about 5/16" long (about 8mm). I am being told that my screw is too short and I got the wrong screw. Before we flood with Evolve with issues, can you quickly measure the screw and let use know how long it is?

Also - if anyone who is not having problems with their Newton LPR Cap could do the same it'd help us out. I know that it'll mess up your settings but I was just wondering how long the working LPR screws are.

It makes sense, because I cannot bring my LPR down below 60psi either because the screw is in all the way. A longe screw will fix the problem.

Does this get me mad at Evolve? No because I know that every LPR is different and I'm willing to bet that some LPR's will work just fine with a shorter screw.

[El Pirata]

That's a really good point. That being said it also might be that some lpr's might be better off running at 80psi before adding the evolve kit. I know I had a hard time reaching 50psi with my evolve kit and after removing 2 shims it worked fine from then on.

[corrupt123]

too many things to try, to little air.

as it stands right now, im going to just clean up my gun, and set my pressure at 50 psi with the stock LPR. it's friday, and i dont want to spend all night on it. and so i'll be setting up for tomorro.

anyways, TR, i just checked my screw with a vernier caliper... really accurate. came up with exactly 8mm. i am in contact with evolve because of the replacement cupseals, and so i think i'm okay there.

please, dont get me wrong, im not mad at evolve. im more.. anxious. as stated above, i have a tourney in 3 weeks, and having the kit working would be nice.

aswell, monday i will be drilling out the LPR piston pin, the brass peice that presses aganst the LPR piston on monday, as i've heard good results. i have check o-rings all around the LPR (not the LPR housing as i cannot remove it but the piston and the rings on the evolve adjuster) and they're fine. i replaced the lpr piston ring with another, new harder ring, and greased excessivly. i noticed some increase in LPR stability but nothing satisfactory.

[Trigga Nometry]

corrupt - Did you have problems in getting the Newton Cap LPR down after the stock LPR was set to 100psi? If you did, let me know. For example, I could not get it below 60psi because the screw was too short and would put enough pressure on the LPR. I just got a longer screw and now it works fine.

If you cannot get a screw yourself, PM me your address and I'll send you a 12mm screw to try out.

[corrupt123]

if evolve doesnt send me a screw, i'll pick one up from work. i work at RONA, the canadian equivelent to Home Depot. type M4 12 mm u said right?

im still waiting on the bit size used to drill out the evolve peice that sits aganst the piston. im thinking 1/8th? i'd really like to whip one up oughta aluminum, and drill it excessivly... not only down the center from end to end but across on the sides at the back (thin part) to allow the air to go sideways aswell.

anyways, if you feel like send me a screw for free, i wont turn it down. lemme know i'll PM you my address. note im in canada though, so it'll be a buck or two for the shipping.(letter)

*edit

forgot to add, yeah with the stock (8mm) screw i was okay adjusting pressure. what i did was pull the screw ALL the way out, than worked my way down. mind you, i was on my last few threads when i was in the mid 40's range (psi) and as i mentioned before, when i fired a few shots it would jump up to mid 50's and stay stable there, so i guess you could say, i didnt have a good time getting it to stay at 40. boy do i hope the new screw and drilled out piston peice will give me an adjustable LPR that works like the stock one.