Tribal loosing pressure!

[boozer]

Hello, this is my first post to the forum. I have a Tribal BBT 1.0 that I cannot seem to get working correctly. As long as you are shooting the gun every few seconds, everything works fine. If I let the gun sit for anymore than 30 seconds (maybe less), the gun seems to loose all pressure, barely firing the first shot out of the barrel (Sometimes it will load 2 or 3 paintballs before it has enough pressure to remove the jammed up paintballs). Does anyone have an idea as to why my gun would be doing this?

Thanks

[shiftycastro]

sounds like the lpr....... or the aoc.

how is your gun set-up?

[D V US]

Sounds like the classic first shot drop off (FSDO) syndrome. All too common in stock Tribals. Sometimes, but not always, turning up the dwell will help to at least get the first shot out the barrel, and turning up the AOC (LPR) can also help but if you aren't familiar with the procedure I would advise against it. Best way to go is to contact Edwin and get or have him install one of his marvelous LPR thingys.:ThumbsU3: Give this a look, and welcome to the Tribe.
http://www.tribal-paintball.com/products.html

[boozer]

I have tried turning the dwell up, it does help get the 1st ball out but still is not solving the problem (Plus I had it all the way up and it was eating the gas!). I have not tired turning the LPR up… I just recently got the LPR adjustment screw loose so I have not yet had a chance to play with the pressure. I am also using a stock regulator which I have no clue if it has ever been cleaned, so I will be sure to put a new one on it before I test it again. Thanks for the help

[Slider25]

I had the same happen to my mephy after I changed the hpr! The big difference was the stock aoc, and I replaced it with Edwin's LPRC and all is sweet now. Not only does it hold pressure and shoot consistant, but now it uses a lot less air (gas)! I shoot the tank down to under 200 psi!

[Edwin]

Unfortunately FSDO can be caused my many things!!!

HPR, LPR, NOID, RAM, etc.
Most cases it is the RAM, but I had HPRs do it. Lots of times, just a complete dissassemble, Lube and reassemble will solve it.

I would go through and lube everything first.....
Unless you have spares of everything, then I would do Trial and Error. Replace HPR--yes/no
Replace Noid--yes/no
Replace Ram--yes/no
Replace LPR--yes/no

Basically you have to be equiped to fully repair and maintain your Tribal to solve this problem.

HPR Gauge
LPR Gauge(s)
Chrony
Extra Air
Paintball
Tribal Tools
Lots of Spare time.

else Send to Warpedmephisto

[~kaos~]

Yep.... I've seen that problem at least a dozen times and it usually involves the HPR, the AOC or both. Quality control has always been an issue with totally stock Tribals. Anyone here can tell you that one bolt from one Tribal might not fit in another.... same with AOC assemblies. Setting up A Tribal using the stock items is not impossible but it does take some knowledge.(xtra parts are a pluss to have as well).
FSDO can usually be corrected by polishing the ram shaft & inner cylinder. Adding Edwins ram assist spring to that would just about gaurantee you'll never experience FSDO again. You'll need to make sure your LP side is at least 100+psi (i like 110-115), if you have a stubboun marker 120-125 works. You'll need an AOC gauge or RAM gauge to set that tho. Some markers work fine with the AOC, but upgrading to one of Edwin's LP solutions or using an lp adapter and Cocker style LPR is MUCH EASIER. In addition you'll get better performance.
Last but by no means least I would chuck the stock HPR unless it was rebuilt by Warped......
Welcome to the TOG, have fun.

[boozer]

I have started going though the gun and replacing all the o-rings and such.... and noticed some damage to the aoc. The damage had left some burrs around where the o-ring sits, would this cause the gun to loose cocking pressure? I cleaned the area up the best I could hoping that this will solve the problem or at least make it to where you can let it sit for more than 30 seconds. On an off subject, I finally got my Mephisto back from my old house and the bolt seems to have swelled a bit (not enough to lock it up) but it does not move as freely as it once did (it is a Delrin bolt). Is there anything I can do other than purchasing a new bolt?

[D V US]

I don't think the burrs would cause it to loose pressure, just make it leak causing the AOC to constantly keep up with the leak. Frankly, ditch the AOC in favor of one of Edwin's marvelous lpr contraptions. It will make life much easier. As for the bolt, you can chuck it in a lathe and turn it down a couple thousandths. Check the inside of the body first and make sure the slot for the bolt pin hasn't been dinged. If so, this will have to be smoothed out before any bolt will work. Good luck.

[boozer]

Thanks to a gun and some parts from shiftycastro, my Tribal BBT is fully functional! I replaced the AOC and valve and everything works correctly. Plus I was able to keep the third gun functional as well. Now a Proud owner of three Tribals :D

[boozer]

I spoke to soon, I aired the BBT up today and let it sit for 5 minutes and on the first trigger pull, nothing but a cycle of the noid. Could it be one of the grub screws leaking pressure off? I am running out of ideas here... I have replaced the AOC, valve, and ram...

[pbstr4l]

so you heard the noid cycle, but the bolt doesnt move at all?, i'd recommend a ram spring

[boozer]

sorry, forgot to add that it has a ram spring installed... I kept messing around with it today and it seems as if the valve is moving forward just a little bit, enought that the ram cannot strike it. (I aired the gun up and couldnt get the pressure out of the ram, had to cycle the noid to release the pressure) Would the valve moving forward block the flow that allows it to fire?

[boozer]

Ok, the gun is finally working correctly. After changing the AOC, valve, and ram and then testing it, the gun went from firing to just hissing air out of the grip. It had to be the noid; it was the only thing in the gun that hadn't been changed. After replacing the noid the gun shot like a dream.... but did it still have the FSDO.... NO! I left the gun aired up, came back to it after 15 minutes and the first pull sounded identical to the rest. The real test we come at the field but at least now I can feel confident about playing with it. I decided to test the broken noid on my mephisto that I knew was working and the noid leaked just the same right around the grip.

The only problem now....... I need a new noid. Is this the correct noid?

http://www.airsoldier.com:8080/cgi-bin/mivavm?Merchant2/merchant.mvc+Screen=PROD&Store_Code=AOS&Product_Code=SKIN-K3H03&Category_Code=SOLENOIDS

http://filebox.vt.edu/users/wnester/Pictures/paintball/bbt.jpg

[boozer]

i found the right one.... I need to read a little more before posting, sorry