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Blubenz

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Reply with quote  #16 
Quote:
Originally Posted by Guges Mk3
Is the cylinder air tube secure and not loose and is the nozzle undamaged?

I had a wiggly cylinder head air nozzle once that would now and then back up during a mag change and then the piston would eventually push it back into position...
absolutely no wobble up down left right or any other direction

Also no scratches or any other damage to nozzle.



Also on another note in the diagram picture, there was a second spring installed over the spring pointed to in red. It was removed thinking that was the issue by the gun tech, and it made no difference negative or positive. I was just curious as to why that’d been there.

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Drivenbykarma

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Reply with quote  #17 
Dam super weird.you've done due dilligence on covering all the obvious possibilities,i honestly had the same issue with a lvoa c. It wasnt as drastic as a mag change,but could go up 2 30 shots before correcting an then it was fine. After me an another better tech dissected it.we went hard. (It was the techs personal gun which became mine) we replaced everything an i mean everything..what it finally came down to, was either piston head or the fett. Cant say for sure because they were replaced at the same time. Although im thinking it was somehow the krytac fett. Why it would do that i have no idea. But after a gate titan was dropped in. It was fixed. Good luck. Weird tho aint it
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Drivenbykarma

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Reply with quote  #18 
Oh an in some cases. That second spring can cause a fpa drop if its not there. I'd lost it on a spr an crb both had an almost 20fps drop but varied. After not being able to find a replacement due to krytacs website being down. I made one out of a motor sprng i.i.r. c
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Blubenz

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Reply with quote  #19 
Quote:
Originally Posted by Drivenbykarma
Oh an in some cases. That second spring can cause a fpa drop if its not there. I'd lost it on a spr an crb both had an almost 20fps drop but varied. After not being able to find a replacement due to krytacs website being down. I made one out of a motor sprng i.i.r. c

Yea I figured the second spring was there for extra tension against the air nozzle to assure a better seal for FPS... but again the part isn’t listed on the exploded view so I’m not even sure it’s supposed to be there. ( like a spring bounced across the assembly room landed in a box of barrel springs and just happend to be installed by accident on mine)


Hm. Thats not reassuring.

It may help me get over not wanting to open the gear box though.

I had bought a maxx hopup I wanted to stick in this but I found out the stock krytac nozzle isn’t within spec to be compatible with the maxx. I’d have to crack the gearbox and install a maxx nozzle.


I didn’t want to do this because of the warranty, but at this point the warranty isn’t really doing me any good...


FYI I normally run 380fps with .20s

With the 6.01 Prometheus barrel and the Prometheus bucking r hopped it’s a laser when it functions correctly and really seems unfair to use, Maybe the mag issues is it’s way of leveling the playing field
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Kraken_Wrangler

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Reply with quote  #20 
Quote:
Originally Posted by Blubenz
It was removed thinking that was the issue by the gun tech, and it made no difference negative or positive. I was just curious as to why that’d been there.


The heavier spring is a tensioner that presses the hopup against the gearbox. This is to force a decrease in the chamber gap. Smaller gap = better compression. It also changes how certain magazines interact with the chamber. If the magazine has a far seat, it will force the hopup forward and cause a compression issue very similar to your description.

That being said, certain magazines will force this problem too.

What kind of mags are you using?
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Blubenz

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Reply with quote  #21 
Quote:
Originally Posted by Kraken_Wrangler


The heavier spring is a tensioner that presses the hopup against the gearbox. This is to force a decrease in the chamber gap. Smaller gap = better compression. It also changes how certain magazines interact with the chamber. If the magazine has a far seat, it will force the hopup forward and cause a compression issue very similar to your description.

That being said, certain magazines will force this problem too.

What kind of mags are you using?

As discussed earlier in the thread, it doesn’t matter what type of mag I use ( high mid low, half full full to the rim, pts epm, bamf, Kwa, elcheapos...) they all have the same effect, I’ve used brand new mags old mags, mags I’ve borrowed that feed perfectly from a friend that has a krytac lvoa s at the fied I play at, they all do the same thing, THEY FEED FINE BUT THR FIRST 5-15 SHOTS GO ABOUT 30 FEET, THEN MAGICALLY START SHOOTING CORRECTLY. I’m at a loss as to what’s causing this, I don’t think it’s a mag issue at this point because of the amount of mags I’ve tried. Just my assumption.

Just a side note: I’ve also tried wedging the mags in with some felt to take up the slack to the point of no wobble (forward and rearward) thinking it may be something to do with the mag position, not that though.
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Blubenz

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Reply with quote  #22 
Quote:
Originally Posted by Drivenbykarma
Dam super weird.you've done due dilligence on covering all the obvious possibilities... what it finally came down to, was either piston head or the fett. Cant say for sure because they were replaced at the same time. Although im thinking it was somehow the krytac fett. Why it would do that i have no idea. But after a gate titan was dropped in. It was fixed. Good luck. Weird tho aint it


I’m going to try this this weekend just to eliminate it. I’ve ordered a maxx 21.00mm nozzle, maxx cylinder head, and piston head. I also ordered a m120 spring to try and get it a hair closer to the 400 mark( right now I’m running right at 360fps with .20g)

I didn’t order a mosfet, I don’t think that would affect that because of it being electronic and programmed to do a certain thing. ( I think this is a mechanical issue because it’s an on and off problem, I’d assume a programmed issue would be constant)

Another FYI: in the year I’ve had this gun it’s never been in ANY kind of moist situation,( yea I’m one of those people that won’t play at the first sight of a cloud)
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Kraken_Wrangler

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Reply with quote  #23 
Quote:
Originally Posted by Blubenz
As discussed earlier in the thread, it doesn’t matter what type of mag I use ( high mid low, half full full to the rim, pts epm, bamf, Kwa, elcheapos...) they all have the same effect, I’ve used brand new mags old mags, mags I’ve borrowed that feed perfectly from a friend that has a krytac lvoa s at the fied I play at, they all do the same thing, THEY FEED FINE BUT THR FIRST 5-15 SHOTS GO ABOUT 30 FEET, THEN MAGICALLY START SHOOTING CORRECTLY. I’m at a loss as to what’s causing this, I don’t think it’s a mag issue at this point because of the amount of mags I’ve tried. Just my assumption. Just a side note: I’ve also tried wedging the mags in with some felt to take up the slack to the point of no wobble (forward and rearward) thinking it may be something to do with the mag position, not that though.


It helps to demystify the problem and look at it logically. Were it me, I would borrow another Krytac gun and swap upper/lowers. If the old upper exhibits a problem, then it's likely the upper. If the old lower exhibits problems, it's likely the lower.

What is changed in the first 15-30 rounds?

-Magazine Tension.


Then we run down the logical tree. We know the gun does this consistently with the first 30 rounds or so. That means the error isn't random. We know the gun fires normally after the resistance becomes lighter. So we can say it's likely not the seals. And we know the gun is loading and chambering correctly. So it's not a chamber issue.

This leads me to believe you may have a problem with your nozzle/tappet plate/tappet spring.
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Drivenbykarma

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Reply with quote  #24 
I agree with the idea that it could be a tappet,after i thought about it a bit,i did change my tappet to a shs one,when i did the cyclinder head an fett install. Also on those Max model hop ups.. they are hit or miss with guns.. but generally dont like krytacs well. Even with the appropriate nozzle from them. I was a rep for a max for a bit . And while they are awesome hopups in some guns. They wont work for d*ck in others including so far,my mk1 spr my mk2 spr or my krytac Lmg..and trust me i tried. On a couple different guns the max hopups actually got me a 20fps increase. While when installed into my krytacs i was getting a 60-80fps loss. So i put em to use elsewhere. Good luck. The cyclinder heads are good,but the front rubber buffer on almost all of mine had to be glued down. So look at that,cause its a b*tch trying to replicate it if it falls off. Good luck.
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Blubenz

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Reply with quote  #25 
Quote:
Originally Posted by Drivenbykarma
. Also on those Max model hop ups.. they are hit or miss with guns.. but generally dont like krytacs well. Even with the appropriate nozzle from them. I was a rep for a max for a bit . And while they are awesome hopups in some guns. They wont work for d*ck in others including so far,my mk1 spr my mk2 spr or my krytac Lmg..


I’m aware, I actually already had the hopup installed and it worked a couple shots but because the nozzle was not the correct size it was catching and sticking 3-4 shots. I also had to file down the “fins” ( the guides on each side of the hopup to keep it from rotating) as they were too long to even put the outer barrel housing back on, and put the pin in.
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Blubenz

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Reply with quote  #26 
Quote:
Originally Posted by Kraken_Wrangler
This leads me to believe you may have a problem with your nozzle/tappet plate/tappet spring.


Any idea as to how it was like this straight out of the box?

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Blubenz

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Reply with quote  #27 
Boom! All maxx internals and it works flawlessly with kry hopup. Will swap hopup to maxx tomorrow and post results.

Honestly I’m just happy at this point it feeds perfect, now I can concentrate on getting kills instead of worrying about shooting until I can hit something 40ft away!

Here’s a great tear down and rebuild video that would be great for a beginner trying to upgrade a lvoa or similar

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Blubenz

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Reply with quote  #28 
So apparently this was the only thing out of place while I had the gearbox apart. Still don’t know how this would have been like this from the factory though

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Kraken_Wrangler

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Reply with quote  #29 
if the compression components were flubbing shots, it's likely the gun was jamming the piston on the forward stroke.
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Drivenbykarma

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Reply with quote  #30 
Quote:
Originally Posted by Blubenz


I’m aware, I actually already had the hopup installed and it worked a couple shots but because the nozzle was not the correct size it was catching and sticking 3-4 shots. I also had to file down the “fins” ( the guides on each side of the hopup to keep it from rotating) as they were too long to even put the outer barrel housing back on, and put the pin in.


Yes the bb catch is a great idea,an all things considered it is very close in design to the krytac hopup (more of a metal higher quality version, If yo u will) which I've long considered the best design for an m4 based rifle.And by far the best stock hop up to come from a manufacturer. And although the max comes looking all pretty, by the time you've trimmed sanded an fit,just to get it 2 work right,it's a whole different color,my first test se pro is now totally silver from, all the adjusting I did,my second one is only half silver,cause the second time around I turned my attention to the outer barrel an did some dremel'n on that a bit 2 find a happy medium.lol for this much work, I could've just cerakoted a krytac hopup, that'd give me something that uniquely looks cool an works great! LoL
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