Murphy's Law BKO

[Rich4444]

I think I'm going to name my BKO the "Murphy's Law BKO"
LOL, my idea, don't steal it!! LOLOLOL I'm engraving that in the side of the thing this weekend I swear LOL

Ok, to date: (this thing was never much from the factory)
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1. Swelled Bolt : Sanded
2. Bad HPR I think: Replaced with CP
3. Bad air consumption: Added Mitey Max and Vapor Valve
4. LPR : Slight Dent, sanded the Plunger.
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Well, I'm replacing my BKO now (trying an Epic)...but I'd like to still have it as a backup or for new players to use on my team when they come to a tourney.

Current Problems:
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1. Blowback: Enough to fubar my Halo B. A gravity hopper looks like a popcorn popper when I use it.

2. Velocity: I'm not sure now if it is the LPR still acting up, because that seems to be working good, but the Velocity is still all over, and I'm wondering if the Blow Back is now causing the problem. I can seem to tune it within 10 fps (not bad), but then, like this weekend, I set it down for 15 mins, and went to chrono for a tourney game, and it went from a steady 265 down to 178 and 198!!! What is that all about?!
Then, I rechrono'd at that chrono, and it shot 265 again, and I came off the field, and it was 313!!! (4 point penalty!). I used my Spyder Xtra the rest of the day with no problems.
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So, what do you think?....

Ok, so, I think maybe when my bolt swelled, that I didn't sand it enough, and it is still getting drag, and maybe that is keeping the bolt open too long, causing inconsistant velocity, and also allowing blowback. Lubing the bolt good with White Lythium Grease seemed to really help a lot when I did that the first time, but it hasn't gotten it to the performance it should be for the upgrades I have on the marker.

I think, this weekend, I'm taking my stock bolt to a laithe, and I'm going to groove into it an O-Ring groove, and put an O-Ring (hey, why not two LOL) onto the bolt, and see if that helps at all. Then, I'm going to just check the LPR again and make sure that is working fine.

My only other option is a new bolt, and a new LPR, but I don't want to spend any more money on this marker than I need too. I've already upgraded everything BUT those two parts on the marker (and stock chip and solenoid)... and I just don't want to sink any more money into it!

I'll let you know how the O-Ring job comes along. I figure I can give it a better sanding in a laithe too, so that it sands it evenly all the way around, if I can get my bolt into a laithe without damaging it :)

Also, I'm going to FIRST check my regs and really chrono it up well (have a pocket chrono now, those are awesome!). Anyway, I think I might be setting my LPR just a little too high, and it could be overworking it. So, I'm going to check that again, and make sure I'm not pushing too much pressure (BKO 2003).

I'll let you know how it all goes, and how my Epic works when I get it!

[Rich4444]

Oh yeah, and I'll take my old stock HPR and try it on my marker now that it has been a little better, and I'll see if it still acts up or not with my LPR situation resolved.

If you can't remember, my guage on my HPR use to bounce all over, I mean 250, 150, 200, 150, Up, Down, ALL OVER. It was terrible. THAT has been corrected since I put my HPR on, so I figure my stock HPR was just bad, but I'll test it this weekend now that I worked on my LPR also, and see if it was my HPR, or a symptom something caused by my LPR issues.

I'm betting the HPR is still bad, or needed to be cleaned. Ever since I bought it and first took the regs apart, and Plungers were just TIGHTLY stuck into the marker. That is probably why when I would clean it, it would work for a day and act up again. All that time I thought it was my stupid Solenoid coming loose, it was just my plungers getting enough lube. I realize now that the plungers are suppose to move a little freely and not be stuck so tight :o :laugh: :|

[artshark]

Hey, if you can smoothly lay in a depression for an o-ring, power to you. Just work slowly. I've messed up on the lathe many-a-time in school, so always add aslittle as possible each time you go and ALWAYS capliper after each cut!



Art

[lotus_esprit5]

Good luck with modding that bolt. If it doesnt work, Vapor bolts are only $28 on www.tantrumpaintball.com

Let us know how the Epic works out. I'm curious how well they work with that no-bolt design. Supposedly that have just about no kick, no chops, really good accuracy, plus they're small. I heard they are working on a vert feed version and potentially an e-frame.

[Rich4444]

Hmm, sounding hard modding the bolt now, but for $28 for a new one, what the heck! That isn't bad for that vapor bolt, I thought they were more. I really liked my Vapor Valve.

I hardly ever use a laithe, but I figure, it is plastic so it shouldn't be too hard. My pop has nice tools also. I'll do very small cuts at a time. The Oring will have to fit pretty good, so I'll be carefull. Really, even if I mess it up, it shouldnt hurt as long as I can get ONE O-Ring to fit someplace infront of the hole on the bottom :o (I hope hehe).

That is why I wanted the Epic too. Only the Mechanical trigger is available, but it is suppose to have a nice pull. The only thing bad I've heard, is that it is a gas hog, and you can "short stroke" it like an autococker.

I just hope it is quiet when I shoot it. I've heard that both ways, and I love quiet markers :) Then I can snipe on the speedballs fields :)

I think it is only 2.5 lbs also. That would be pretty light, and it has a tiny profile like a Mag.

[lotus_esprit5]

2.3 lbs. very svelte :cool: .

[artshark]

Svelte=hot? Helsvete is hell, right? :|



Art

[Rich4444]

Bko update...

Ok, so I looked at my marker again this weekend. Even with the Epic coming, I want the BKO as a backup or for a friend that might play next year.

I gave up on that bolt idea. I looked at it closer, and I just think that it would be too hard to get an Oring in, by the shape of the bolt (the little groves on the side) to still have it do it's job. Maybe I'll try it yet since I might consider replacing the bolt know anyway :) I'll do it as a last ditch effort. I MIGHT have caused the blowback when trying to sand the bolt after it had swelled.

Then I checked the LPR. It WAS acting up again, and I think it is the white lythium I'm using. I compared it to some shocker lube today, and it wasn't nearly the same quality lubricant the shocker lube is. The White Lithium I had from the local hardware store was a yellowish color, and melted easily, and smells strongly. There still must be enough petrolium in it to cause problems.

I sanded my LPR plunger again, Put the O-Ring back on, put shocker lube on it, and fixed that. Then I took it over the chrono. Funny, but it shot VERY consistant, when I had it tuned up at around 320 fps. It was great for consistancy there. I'm thinking the upgrades on the marker either are overpower my current LPR (so I'll replace the LPR), or maybe the valve spring is just a little too weak and the valve stays open too long with the high flow valve.

So, I'm going to check that valve spring, and maybe replace the LPR if I have no other choice (at somepoint, that is cheaper than shooting any more paint over a chrono LOL).

I'll let you know what I find out! But, when I tuned my LPR and HPR to try and get 260ish out of my marker, it would jump from 235-291 ish. That is just not accurate enough to make me happy for the cost of the marker. If I tried to bring it down lower, it would go from 168 - 240, just crazy inaccuracy.

Over 300, it is right on the money. I never realized that before, because I don't like to tune a marker that high of velocity, because I don't want to use it that high at a field. My fields penalize over 300 walking off a field in tourneys, so I want it safely at 255-265 fps.

[yoda101]

Originally posted by Rich4444
Bko update...

Ok, so I looked at my marker again this weekend. Even with the Epic coming, I want the BKO as a backup or for a friend that might play next year.

I gave up on that bolt idea. I looked at it closer, and I just think that it would be too hard to get an Oring in, by the shape of the bolt (the little groves on the side) to still have it do it's job. Maybe I'll try it yet since I might consider replacing the bolt know anyway :) I'll do it as a last ditch effort. I MIGHT have caused the blowback when trying to sand the bolt after it had swelled.

Then I checked the LPR. It WAS acting up again, and I think it is the white lythium I'm using. I compared it to some shocker lube today, and it wasn't nearly the same quality lubricant the shocker lube is. The White Lithium I had from the local hardware store was a yellowish color, and melted easily, and smells strongly. There still must be enough petrolium in it to cause problems.

I sanded my LPR plunger again, Put the O-Ring back on, put shocker lube on it, and fixed that. Then I took it over the chrono. Funny, but it shot VERY consistant, when I had it tuned up at around 320 fps. It was great for consistancy there. I'm thinking the upgrades on the marker either are overpower my current LPR (so I'll replace the LPR), or maybe the valve spring is just a little too weak and the valve stays open too long with the high flow valve.

So, I'm going to check that valve spring, and maybe replace the LPR if I have no other choice (at somepoint, that is cheaper than shooting any more paint over a chrono LOL).

I'll let you know what I find out! But, when I tuned my LPR and HPR to try and get 260ish out of my marker, it would jump from 235-291 ish. That is just not accurate enough to make me happy for the cost of the marker. If I tried to bring it down lower, it would go from 168 - 240, just crazy inaccuracy.

Over 300, it is right on the money. I never realized that before, because I don't like to tune a marker that high of velocity, because I don't want to use it that high at a field. My fields penalize over 300 walking off a field in tourneys, so I want it safely at 255-265 fps.

rich if u still want to try the bolt idea lmk i have a never used vapor bolt sitting in my bag, i was planning on using it but then the blind bolt came out and have gone to that. If you want it its yours for $20 shipped

[lotus_esprit5]

svelte ( P ) Pronunciation Key (svlt)
adj. svelt·er, svelt·est
Slender or graceful in figure or outline; slim.

There ya go art.

I think the spring could be it. Thats certaintly the cheapest solution. It makes sense if you think about it, how if the spring is too weak it would not work as well at lower pressures. The lower pressure in the internal air chamber would allow the valve to stay open longer before the weak spring shut the valve again. I'm hypothesizing here, so anyone can feel free to correct me. But then the variation in consistency shows that the pressure in the internal air chamber must be fluctuating alot from shot to shot, so that indicates an inline problem, yet you have a CP inline, and I'm sure you've already checked that anyway. hmmmmm....I'm stumped, its too late an I'm probly wrong and not making sense. I'm just PO'd that you put a bunch of money into your gun and it still doesnt work like it should, I guess maybe Satan possessed it the minute it came off the assembly line. Try throwing some Holy water on it. "The power of Christ compels you!"

[artshark]

Oooh. I swear it's Swedish. Has that Scandinavian feel!



Art

[Rich4444]

HAHAHA That is funny stuff!

Hey Yoda, I think I'll take you up on your offer. I'll even send you an extra $5 for shipping. I'll send you a PM.

That is the same thought I had on the Spring. But now, I'm starting to think that the spring is just one problem, making my shooting velocity range high. I don't know if it is the cause of the inconsistancy. I started thinking a spring is a pretty simple device to cause that sort of problem, regardless of what other parts I have or where the pressure is set. With simple blowbacks, I find with High Pressure Air, they are very consistant.

I bet it is #1 the bad bolt causing blowback is also causing drag, messing with the hammer operation, or #2 a bad solenoid not operating the hammer right, or #3 a bad LPR not giving proper pressure to the solenoid. It is one or a combination of those 3 things. But, a new bolt will help the blow back, so I'm taking Yoda's offer :) After that, I'm checking the spring and the LPR.

Those 3 things would most likely give bad hammer to valve contact, opening the valve too long/too short, and making air pressure to the ball inconsistant. The spring is just raising the overall shooting velocity I'm thinking, making it hard to tune it lower, but not making it more inconsistant.

I bet it could be #1 though. I think I had problems with my initial bad HPR, but I think a bad bolt also caused all sorts of issues since the HPR was replaced.

[yoda101]

PM sent back