barrel break and chop....

hawaiian_bread · 03-19-2011, 08:31 PM

what would be the reason my mini would have barrel breaks and chop? I went to the field today with the new Boss bolt and put it to the recommended settings. Went to the chrono and lowered my pressure to 140psi, dwell to 24 blinks and my back cap was turned out about 3 1/2 times. It shot at 273-280 so I took it out to play. Single shots didn't really cause problems but when I shoot a bit fast I got barrel breaks. My mini shot perfectly well before the bolt with my current setup.

So I got a bit fed up with constantly going to the chrono to change settings and decided to put my original bolt back on and put it back to its regular settings. I dismantled and cleaned + lubed everything while my friends were playing and hit the field once the mini was back to original before the bolt upgrade. I still got barrel breaks....

What am I doing wrong??

Mr Virus · 03-19-2011, 08:46 PM

Did you check to see if the exhaust port on the poppet stem was clogged?

Darkwulf · 03-19-2011, 08:50 PM

Did you check the paint?

hawaiian_bread · 03-19-2011, 09:14 PM

Mr Virus: I cleaned and relubed everything including the poppet
Darkwulf: There was 3 mini's today and 2 had barrel breaks and 1 worked perfectly fine using the same case of paint

Darkwulf · 03-19-2011, 10:22 PM

Usually a barrel break is a paint or paint/bore match issue. What kind of paint was it and was it a winter paint?

hawaiian_bread · 03-19-2011, 10:37 PM

the paint was Hostile Creations Riot paint and I also did the blow through test with the barrel and it didn't take much force to blow the paintball out the barrel. All 3 mini's had .001 bore size difference from .688-690 and the .688 didn't have any problems. I have a .689 barrel bore for reference.

Darkwulf · 03-20-2011, 06:55 AM

Hmmm Never heard of that paint but that doesn't mean anything. Is it cold weather paint because sometimes that stuff is a little brittle or was it colder than usual outside? This one has me stumped so far.

hawaiian_bread · 03-20-2011, 12:28 PM

Well I believe the paint is fairly a new brand and I don't believe it's cold weather paint. We did the drop test and paint was not brittle at all. But the weather we played in was much colder than usual in Southern Cali as we were expecting rain. I'm still confused at the fact that out of 3 mini's only 1 performed flawlessly and that was the one with a smaller bore...

hawaiian_bread · 03-20-2011, 08:39 PM

Anyone have an idea as to what I can do?!?! Could the barrel to paint match be the only problem?

Bloodymurder · 03-20-2011, 09:11 PM

make sure that the exhaust port on the poppet is clear. This has nothing to do with your poppet being lubed. Check to see that the bumper on the end of the bolt is there, and still good. Make sure that the spring is on the right way, and also make sure that the poppet is properly reset.

140 operating pressure is just too low. Turn it up to at least 160 with the boss bolt, and 190 with the stock, and try again with dwell at 7ms. How far out is the back cap?

and also, if 2 out of the 3 were breaking paint, chances are it's the paint. try something different.

klutch50 · 03-21-2011, 12:26 AM

this brings up a question i had about barrel/paint match, I have an Empire barrel kit and how tight do you wanna make the fit?

TheEnglishGuy · 03-21-2011, 04:31 AM

Check to ensure the Restrictor is in place and the correct way round, I've read that directly affects how hard the Mini/Axe is on paint.

Paint quality combined with weather temperature is the biggest factor I've seen in paint breakage. I've seen days when everyone is breaking, no matter what marker they've got and then the next day everything's perfect again.

English

hawaiian_bread · 03-21-2011, 11:31 AM

English - I'll check that tonight as I think that's the last thing I can check now. I already checked the poppet last night like Bloodymurder said. I'm hoping it might've been the weather though. I noticed a DLX Luxe was also having barrel breaks that day.

D-2-the-why-her-son · 03-21-2011, 01:06 PM

did you also check to see your detents were in good condition and not sticking, sometimes its the simple things that can cause problems or even a low battery? giving the solenoid issues.

hawaiian_bread · 03-21-2011, 01:11 PM

D-2-the-why - I did check the detents, even unscrewed it and cleaned it just in case and checked if the eyes were clean as well. Also changed the battery out and still got barrel breaks.

TheBoss33 · 03-21-2011, 01:53 PM

Quote:

Originally Posted by hawaiian_bread

D-2-the-why - I did check the detents, even unscrewed it and cleaned it just in case and checked if the eyes were clean as well. Also changed the battery out and still got barrel breaks.

Barrel break are usually paint issues. If it was in the breech I would tend to think it could be settings, blow by or something like that.

hawaiian_bread · 03-21-2011, 02:12 PM

I did have a chop but I know that was due to me messing around with the settings. I plan to hit a field to use their chrono just so I can mess around some more and put my Boss bolt to it's full potential. Hopefully last sat. on the field was just a bad day and next time it won't happen. I guess I'll pay a little more for premium paint.

Ty29 · 03-21-2011, 03:13 PM

Quote:

Originally Posted by klutch50

this brings up a question i had about barrel/paint match, I have an Empire barrel kit and how tight do you wanna make the fit?

Honestly, use the smallest bore size you have. The smaller the better.

Tests have shown (yes, I can provide proof) that you get the SAME amount of breaks inside the barrel no matter what size you use.

Since size has nothing to do with how many breaks you get, that means the only thing it affects is efficiency.

So...with a smaller barrel bore, less air will escape around the larger ball, giving you better efficiency. Therefore, use a .685 at all times (unless your paint is HUGE, in which case a .687 or .688 will do).

codyemerick · 04-05-2011, 02:54 PM

Usuall an overbore problem change the paint and se what happens

Teahouser · 04-05-2011, 03:08 PM

Quote:

Originally Posted by hawaiian_bread

what would be the reason my mini would have barrel breaks and chop? I went to the field today with the new Boss bolt and put it to the recommended settings. Went to the chrono and lowered my pressure to 140psi, dwell to 24 blinks and my back cap was turned out about 3 1/2 times. It shot at 273-280 so I took it out to play. Single shots didn't really cause problems but when I shoot a bit fast I got barrel breaks. My mini shot perfectly well before the bolt with my current setup.

So I got a bit fed up with constantly going to the chrono to change settings and decided to put my original bolt back on and put it back to its regular settings. I dismantled and cleaned + lubed everything while my friends were playing and hit the field once the mini was back to original before the bolt upgrade. I still got barrel breaks....

What am I doing wrong??

If you don't have any paint in the breech then it sounds like its a paint/barrel bore issue as everyone has been suggesting.

hawaiian_bread · 04-30-2011, 08:34 PM

So I finally went back out to the field with the same setup but a smaller bore barrel. Weather was fantastic unlike last time when it was freezing. I shot a case of Delta Force paint and it was flawless. Not a single break the entire day! Boss bolt performed amazingly as well! Thanks to everyone for the suggestions! I'm always learning so I'm glad to be part of a great community!