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View Full Version : Removing Blow Back From a 98c


Ronkend
01-21-2004, 02:36 PM
Ok, I've seen this mod where you drill a few holes in the left side of your gun and it helps you shoot faster, is this true??? I want to know because I'm entering a tournament in a few weeks and I can't use my RT and I have access to a place where I can do this mod, so do you think it's worth it???

Coenen
01-21-2004, 03:16 PM
You're not talking about milling "gills" into a 98C reciever are you?

I've been here for a while and I've never heard of this one. Why would you want to reduce the blowback anyway? You're using a blowback gun for cripe's sake, it needs blowback to work. How would that even help you cycle faster?

I guess maybe NN would know something about this.

IMO it's sounds dumb, why would you want more holes for crap to get into your gun anyway?

Sounds like a bad idea to me at least find someone else who did it and unserstands it before you go off and frill holes in your gun.

BunkeringKing
01-21-2004, 03:21 PM
well you might wanna drill a few holes in the elbow to reduce blowback into the hopper but thats about it.

Ronkend
01-21-2004, 03:29 PM
Maybe it doesn't reduce blowback but it's the mod on model98.net where you drill small holes into your reciever.

Coenen
01-21-2004, 03:38 PM
Ahhh, I see, you want to vent blowback that you feel is effecting the ball stack in your elbow.

I've still never heard of venting through the left reciever, but I have heard of going through the elbow. It's supposed to make the feed rate a bit better I have often contemplated it, but I don't hink I'm going to do it.

Here's a simple test, get 1 piece of kleenex, gas up the marker, put the kleenex on top of the elbow, fire. Make sure that you don't let the marker's kick effect this. If the Kleenex stays put on the elbow you don't have a blowback problem and can refrain from doing this. Try it a couple of times to make sure. If the kleenex is actually blown off by the blowback, vent that puppy.

This doesn't help your rate of fire it helps your feed rate.

Ronkend
01-21-2004, 03:45 PM
I understand that it doesn't affect my ROF but essentially it would....if balls are being prevented from falling then it would slow my ROF even though I have a RICO..........

Coenen
01-21-2004, 03:54 PM
If you're not chopping it isn't affecting your ROF.

Natural Newbie
01-21-2004, 04:17 PM
Make sure when you do the blowback test you are shooting paint.

E r y k
01-21-2004, 07:34 PM
omg guys drilling holes in your feedneck adds 9823742983479492837 BPS that it will load.

no, the difference will be minute. if that was true, i think everybody would have holes in their feedneck

theres no need for the mod, the elbow is not fully enclosed anyways when its connected to the m98 body, there is still a gap.

yakitori
01-22-2004, 05:24 AM
Originally posted by E r y k
omg guys drilling holes in your feedneck adds 9823742983479492837 BPS that it will load.

no, the difference will be minute. if that was true, i think everybody would have holes in their feedneck

theres no need for the mod, the elbow is not fully enclosed anyways when its connected to the m98 body, there is still a gap.

Im w/ eryk on this one. what is it gonna do, add like 1 bps. the gap in between the elbow and the reciever isnt enough?

I wouldnt do this mod. just keep the hopper full and it should reduce the blowback with the weight of the paintballs.

-=ReD-hAzE=-
01-22-2004, 05:39 AM
If you seriously think that your rate of fire is being effected by not having those holes drilled. Then by all means, drill away and increase that feed rate by maybe a fraction of a bps. Maybe it would even be enough of a differance so that you could round it up, to one. :rolleyes:

I personally think if someone is worrying about their feed rate enough to try drilling holes in their feed neck. They're not doing the whole paintball thing right. And they need to just go out and play some more paintball.

Ronkend
01-22-2004, 12:03 PM
Ok, just flame away............**** I just wanted an opinion not a whinning thread

E r y k
01-22-2004, 12:07 PM
Originally posted by Ronkend
so do you think it's worth it???

if i recall properly, you wanted to know if it was worth it.

we just stated our opinions. not whining.

its common sense dude, do you think a hole 1/3 cm in diameter will have that much effect when you can go pick up your m98 and look where the elbow is and see that there is a gap all around it.

yakitori
01-22-2004, 12:16 PM
for real, I wasnt trying to flame you, or whine. I was just giving you my honest opinion. I wouldnt give you advice that I wouldnt take myself. Its up to you if you wanna drill a hole or holes in your loader. afterall, its "yours". I just honestly dont think it will do much.

Also, Id like to point out the fact that if you drill holes in there, you might take a dive into some sand and make a gritty mess of your loader and front bolt, and even be shooting sand granules through your barrel. If you do that, your gonna have some scratches on the inside of it. then youll be buying a new barrel and a new elbow. but then again, you can do that anyway because of the gap.

If you wanna increase ROF and decrease chopping. Get a lapco direct feed and ACI elbow from countypaintball. Thats what I did and I have definately noticed a performance improvement. It is a simple upgrade, no disassembly required. It is made of high quality metal (I think aluminum), and it wont fall off when you unlatch. I havent chopped since I bought one, and thats w/ an RT and crappy galyans paint.

Turambar
01-23-2004, 09:43 PM
He's talking about milling the gills of an m98. That can't be done on 98c's. Milling holes into your receivers won't help you at all. It'll actually lower your efficiency like crazy. Plus you have a way higher chance of getting crap inside your gun that way.

But since you have a 98c, you can't mill the gills (since there are no gills), but I suppose you could put holes in the receivers. If you want the negatives I stated above.

You can easily drill the holes into your elbow and not have any negative effects so why not do it? If it doesn't do anything it doesn't do anything.

E r y k
01-23-2004, 09:48 PM
like yak said, its just another hole for dirt/debris to get into...

which could even lead up to getting your mirror finished barrel to get scratched.

Natural Newbie
01-23-2004, 11:07 PM
How will it lower efficiency?

Ronkend
01-24-2004, 05:48 AM
I'm talking about drilling holes in the reciever not milling gills........where that came from i don't know.....

Coenen
01-24-2004, 06:26 AM
B/C they're the same thing

On an original Model 98 there are gills up front if you mill them out you get the effect you're looking for

On the 98C, since there are no gills, you get the same effect by drilling holes.

tippmann1223
01-24-2004, 07:22 AM
i was goin to drill the holes on my reciever. now i have a little silver dot from where i started the drilling

BattleHazard
01-24-2004, 04:57 PM
i drilled 2 holes in the elbow and it DID HELP!!! it is worth it, i used to have to shake my hopper because it would jam up, now the blowback is alot less and the balls dont go all the way up past the neck.


it takes 5 minutes at the most with a hand drill, and it does nothing bad. it worked for me great, and i have not money for a new hopper, so i drilled. im happy with it, you should be too, good luck and happy paintballing :D



drill the elbow, not the receaver, look on model98.net i think

Turambar
01-26-2004, 03:44 PM
Originally posted by Natural Newbie
How will it lower efficiency?

Well, with holes in your gun at the chamber, gas would be escaping pretty quickly out of them. And that would make it so you used more gas to achieve the same velocity.

Maybe that's just my thinking, but that's how I see it.

And Ronkend: as Coenen said, drilling holes in the receiver and milling gills are pretty much the same thing. Just with different models.

dbs1054
01-26-2004, 04:02 PM
http://www.model98.net/vents2.jpg
http://www.model98.net/vents1.jpg

Natural Newbie
01-26-2004, 04:24 PM
The bolt seals on the barrel, so the holes won't lower velocity or efficiency.

All the holes will do is vent any gasses that are blown back, and any blowback gasses would have been there with or without the vent holes.

dbs1054
01-26-2004, 04:44 PM
I saw the pic so I posted them but I can not figure out why the hole would do anything because the cocking arm is in a big azz hole on the other side. If there was air trapped there then it might let it out but how much air could get trapped there with a 3" long slot cut in the area?

Turambar
01-26-2004, 05:19 PM
Originally posted by Natural Newbie
The bolt seals on the barrel, so the holes won't lower velocity or efficiency.

All the holes will do is vent any gasses that are blown back, and any blowback gasses would have been there with or without the vent holes.

Ah, I totally forgot about the bolt sealing with the barrel. Heh. :P

lance9001
02-13-2004, 10:37 AM
I havent done this to mine, but i thin kthis is what you are talking about. http://www.model98.net/mod10.html

Coenen
02-13-2004, 08:28 PM
Not to be an a**hole or anything, but did you read this thread at all before posting and bringing back from the dead?

If so, I'd like to know how you missed the fact that the same ideas and even the same pictures from that link are contained within this very thread.

Pay attention. Let this die.

nitemare
02-14-2004, 01:15 PM
Hey You guys, check dis out...

http://www.ballisticsports.com/milling.htm

JDS753
02-15-2004, 08:02 AM
wow...slow crowd here today...let this thread DIE

oh and y would u send ur gun out for like 6 weeks, pay $50 and not no exactly what was geting done to the narker, when u can do it urselkf with a drill and a drillbit, or a dremil tool?

nitemare
02-15-2004, 10:20 AM
It was ment to be a proof for the mod is working actually, and wasn't meant to be an advertisement of some kind.:rolleyes::|