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Age; A Factor?

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kendall View Drop Down
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    Posted: 29 September 2012 at 5:20pm
Hello,

I have a few Tippman A5's on hand and a thought did occur to me. In short, I have never replaced my internals, and I wonder if my marker is lacking efficiency because of it.

I have had the markers for a very long time. My primary marker, which has a serial number beginning with '2' has been great to me over the years - in fact, they all have, which is something that a Tippmann owner comes to expect with it's great durability. After every time I've taken my markers out, weather it was a short day of paintball or a grueling day, I've made a habit of tearing down every marker and cleaning it thoroughly. I clean all dirt, paint, etc. from the internals and externals including the disassembling of every rail. I also check and lube every o-ring. It may be a little excessive, but I believe in taking care of markers as the only proper practice if you expect your marker to hold up.

So, as mentioned in the opening statement, I have never replaced my internals (besides o-rings), and I'm wondering if my marker would fire better if I did? I feel that it doesn't shoot as consistently accurate as it once did.

The one fault that only my primary and secondary markers have, is that the Drive Spring Guide Pin (part no. CA-15) that fits into the Drive Spring is bent on both markers. I think, though I'm not certain, that this is due to the faulty manufacturing of my stock made by Rap 4. It is the standard six position stock, and I wonder if the hold where the spring and pin fit into may not be bored deep enough. Any thoughts on that? And, would this bent pint disturb the efficiency of my marker?

So, upgrades? Replacing parts? I need guidance from the best. So I'm here.

Thanks guys and gals.
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tallen702 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote tallen702 Quote  Post ReplyReply Direct Link To This Post Posted: 29 September 2012 at 8:34pm
I don't know what Tippmann's official response would be (Paging Tippmannemployee1!) but as someone who has spent a lot of time around older Tippmann markers, I can say that I've never seen a marked difference in a complete valve rebuild unless there was something seriously wrong with the valve in the first place. As for the other internals like the mainspring, guide rod, etc, it's not a bad idea to replace some of those over time. Especially the mainspring. It'll eventually lose its "springiness" and not push the hammer/striker forward with as much force meaning lower velocity or less consistent velocity.

I'd definitely replace those bent guide rods. If they're bent out of true, then the spring isn't putting all of its force forward due to the bend in it.

Of course, the biggest aid to accuracy is good paint-to-barrel match. It could simply be that the paint you're using these days isn't as big as it was several years ago, and thus doesn't fly as true down the barrel causing inaccuracy.

So, in short, It's not a bad idea to replace the mainspring and guide rod. Make sure to check your sear as well and see if it's starting to wear on the back edge. If you're ordering parts, might as well make the shipping costs count. Then check your paint to barrel match. If it drops right through the barrel, the paint is smaller than the barrel and won't fly as true. If you have to force it through, the paint is bigger and dragging on the barrel causing inaccuracies. If you can pop one in without it falling out, and then blow it through like you would with a blowgun, it's a good fit.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote kendall Quote  Post ReplyReply Direct Link To This Post Posted: 30 September 2012 at 5:43pm
Thanks Tallen, you're always a great help with your insight. I have a replacement spring set already, but will be ordering a couple guide pins soon. I fear that it will just continue to happen, but that remains to be seen. I was incorrect about the stock, I have a Tapco stock on this marker. I have an image uploaded (albeit a low quality one) of the bent guide pin. Has anyone ever seen this?

http://imageshack.us/a/img802/2572/a5guidepin.jpg

Also, I tried what you recommended and the ball simply falls through the barrel. I have a few boxes of Spectrum Rec paint with no caliber size. I use a Lapco 10inch Big Shot barrel, and having searched through the forum I see that Lapco, J&J, and some two-piece Evil barrels are pretty popular amongst the guru's. Does anyone have a preferred paintball for their Big Shots? Resources are somewhat limited around here, so my next paintball purchase will likely be over the internet - so advice would be greatly appreciated if anyone has had good results with a particular paint using this barrel type.

I will replace the springs and guide pin in the coming week or so, and post the results. Thanks again
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Post Options Post Options   Thanks (0) Thanks(0)   Quote tallen702 Quote  Post ReplyReply Direct Link To This Post Posted: 01 October 2012 at 7:53pm
Yeah, bigshots are called "big shots" for a reason. They like bigger paint, which is great if you're using lower-grade paint (like field paint). If you're unable to find something that doesn't just drop right through, I'd suggest either a J&J ceramic (which tends to run a tighter bore) or possibly investing in a multi-caliber barrel kit (e.g. Freak barrel kit).

As for the bent guide rod, I've seen it once or twice on rentals, but very rarely. It's usually an indication that the hole for the pin in the stock/end-cap was off-center, or that the end-cap/stock protrudes too far into the body of the marker, making the hammer hit the guide rod on its return stroke.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote TippmannEmployee1 Quote  Post ReplyReply Direct Link To This Post Posted: 03 October 2012 at 4:20pm
Tallen702 is correct on all accounts.   

Your bent guide pin is most likely from constant disassembly & reassembly.  Sometimes the stock gets pulled out on an angle causing it to slightly bend the the guide pin.  Also this bent guide pin can cause drag on the rear bolt & will cause velocity fluctuations & accuracy issues.  Time for a new guide pin in both you markers. 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote kendall Quote  Post ReplyReply Direct Link To This Post Posted: 04 October 2012 at 4:45pm
Thanks again Tallen, and thanks for the extra assurance there Tippmann Tech. I have a sneaking suspicion that a certain RAP4 ump stock may be to blame as well. I used it very briefly on my primary marker but did not like it at all. It also has a velocity adjuster on the back, and upon further examination there is a set screw that seems to be stuck, leaving the rear velocity adjuster closed tight to the back of the end cap. The Tapco stock I have had for a long time, but the RAP4 just came to mind as a possible problem.

I've already ordered the new Guide Pins and Springs,  and if it continues I'll go and replace the Tapco stock as well. I think there is a chance (although slim) that the hole in the stock wasn't bored out to correct specs, causing the pin to bend on impact. I'll be sure to post up the results as this seems from the outside like a somewhat rare happening - but is getting easier to understand.

I realize there is a possibility that I didn't line up the stock correctly, but taking apart and cleaning and reassembling the markers can't be a bad thing, can it?


Edited by kendall - 04 October 2012 at 4:48pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ceesman762 Quote  Post ReplyReply Direct Link To This Post Posted: 05 October 2012 at 11:01am
Kendall, have you polished the insides of the shells yet??
Innocence proves nothing
FUAC!!!!!


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Post Options Post Options   Thanks (0) Thanks(0)   Quote kendall Quote  Post ReplyReply Direct Link To This Post Posted: 05 October 2012 at 12:31pm
No, I haven't, but I plan to with a handpeice dremel tool and cloth wheel. I suppose that should suffice? Funny thing is that they both still look nearly new after all this time. 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ceesman762 Quote  Post ReplyReply Direct Link To This Post Posted: 05 October 2012 at 12:58pm
Originally posted by kendall kendall wrote:

No, I haven't, but I plan to with a handpeice dremel tool and cloth wheel. I suppose that should suffice? Funny thing is that they both still look nearly new after all this time. 

Try these videos.
http://www.youtube.com/results?search_query=polishing+tippmann+a5+internals&oq=polishing+tippmann+a5+internals&gs_l=youtube.3...50.10547.0.11046.26.24.0.2.2.0.321.1844.22j1j0j1.24.0...0.0...1ac.1.dYjCLgidWtc

I used a very fine sand paper with some tooth paste and water.  After woods  used the polishing wheel of my dremel with the polishing compound to make it shine.

Innocence proves nothing
FUAC!!!!!


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