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modding a multi pump gun? 
PostPosted: Mon Dec 29, 2008 10:43 pm Reply with quote
bayou
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im not new to air gunning but im new to the idea that you can mod them, and sense im a mod freak i have to know what kind of things i can do to the guns i have to get them to have more accuracy/power.
i have a ruger air hawk spring gun and a p.o.s daisy powerline 856 that i want to mod. but sense the air hawk is less than a week old and still under warranty i dont want to mod it yet.
so im wondering is there any thing i can do to my old daisy to give it more power?
thanks

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PostPosted: Tue Dec 30, 2008 6:50 am Reply with quote
Crosman140
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Hi and welcome to the forum. Someone with an intelligent answer will most likely be along soon.

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My Critter Gitters
.22 Crosman 140 (1955)
.177 Crosman G1 (2009)
.177 Crosman 1377 (2009)
.177 Daisy 880 (1993)
BB Daisy Red Ryder (2012)
BB Crosman 1600 (1980)
BB Marksman 1010 (1979)
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PostPosted: Tue Dec 30, 2008 7:12 am Reply with quote
broommaster2000
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To be honest, I'm not sure what can be done to a low end gun like that Daisy you've mentioned. I wouldn't do a powermod on such a gun, since it might actually break down trying to achieve that... Neutral

You can put a tunekit into the Ruger, though, but if you're really that keen on warranty... Well, that's why we often recommend a gun that isn't a rebatched chinese one.

Still, there should be nice tuning-kits around, and that Ruger does look a bit like a certain Diana model so there's a big chance that tunekits for a certain Diana also fit into that Ruger.

I'm not sure which model though.

Hope this kept you reading long enough for someone else to post a reaction that will help you a tad more. Mr. Green

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PostPosted: Tue Dec 30, 2008 8:59 am Reply with quote
Apollo
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The Ruger Air Hawk is supposed to be a chinese clone of the Diana 34.
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PostPosted: Tue Dec 30, 2008 10:21 am Reply with quote
Slavia
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I think if I owned the Daisy I would forget power mods and concentrate on other (simple) stuff. There's a lot of plastic in that gun, and it's not really conducive to radical modification.

I would polish the muzzle crown for accuracy. I would do as much trigger work as I could without going overboard (deburring, shimming to prevent play, etc.) I like trigger shoes, so I'd make one. Finally, I would add weight to make it easier to hold on target.

Then there is the normal stuff - cleaning and lubrication, for example. Trying different pellets. Shooting at different power levels (number of pumps) to see where it's most accurate.

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PostPosted: Tue Dec 30, 2008 11:00 am Reply with quote
bayou
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ok thanks guys, i didnt think that there was much i could do to help the old daisy.
im not keen on keeping the ruger under warranty, that is if i can get parts for it then i would rather fix it myself then pay then shipping to the factory.
is there any good places to get parts for these guns?

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PostPosted: Tue Dec 30, 2008 11:12 am Reply with quote
broommaster2000
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Well, to be honest, you'd need a spring and spring guides and a good lubing to tune a springer. That's stuff that most people can't really do themselves because it takes a bit of knowledge to make spring guides.

It's also easier to drop in (for instance) a Maccari kit that already comes with some good fitting spring guides to begin with.

The Diana 31/34 is a very good platform to begin with, so I guess the Chinese version only needs some of the rough edges getting polished, and then a good lubing and tuning to get it where you want it.

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PostPosted: Tue Dec 30, 2008 11:22 am Reply with quote
bayou
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ok thanks a bunch. what is a good lube for a spring gun?

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PostPosted: Tue Dec 30, 2008 1:34 pm Reply with quote
cw
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Molybdenum disulfide and graphite. I have found this to
be the best. Use a very small amount.

http://www.airguns.citymax.com/catalog/item/251484/42989.htm
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PostPosted: Tue Dec 30, 2008 1:44 pm Reply with quote
broommaster2000
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There isn't one lube for a gun. I use some stuff called Heavy Tar for the spring. I also use the aforementioned Molypaste.

However, a lubetune needs to be done more then once. After a certain (rather undetermined in my case) amount of shots it needs to be lubed again.

This doesn't necessarily go for spring and spring guides, although if they do break down, it's obvious it needs replacement. (Doesn't happen a lot, as far as I know).

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PostPosted: Tue Dec 30, 2008 2:17 pm Reply with quote
cw
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Yes, Heavy tar can be used also. It will reduce velocity
and is mainly used on inexpensive guns with vibration
issues due to large tolerances between the spring guide/s
and spring.

Heavy tar must be applied very sparingly and will migrate
into the piston and eventually have to be removed.

There is another product, Clear tar, also called Velocity tar,
with a teflon additive that will exhibit less of these problems
while still dampening vibration. All in all, it is usually best to
fabricate a new spring guide that fits the spring very tightly
and forgo any tars in favor of moly/graph lubricaton. In the
end consistency will be much better.

http://www.airguns.citymax.com/catalog/item/251484/42987.htm

With a correct fitting spring to spring guide interface you
will have a smooth, vibration free gun with retained and/or
improved velocity.
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PostPosted: Tue Dec 30, 2008 3:21 pm Reply with quote
bayou
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ok thanks thats very good to know because i was going to get some of the airgun tar for my gun! now i wont. thanks alot!

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PostPosted: Wed Dec 31, 2008 6:22 am Reply with quote
Crosman140
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Bayou,

As you can see from my siggy, I own a little cheapy Daisy Powerline 880.

The best "mod" to these little shooters is just to pump it up higher if you want more power. BUT, you won't really gain much from this action from what I read and understand.

These little daisies will reach around 700 fps. This is ample power to do most jobs. Punching paper, a bird, mouse, rat or occasional squirrel.

Many guns lose their accuracy the faster the pellets go. So, you might be able to pump it up 15 or 20 times, but you could lose accuracy and you will probably blow out the seals quicker.

Air guns are a funny breed. They don't make much sound, especially the pneumatic ones. So, the thought is...they can't do much damage. But they are like quiet sniper rifles. They WILL get the job done...most effectively and without the report of powder guns. Smile

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My Critter Gitters
.22 Crosman 140 (1955)
.177 Crosman G1 (2009)
.177 Crosman 1377 (2009)
.177 Daisy 880 (1993)
BB Daisy Red Ryder (2012)
BB Crosman 1600 (1980)
BB Marksman 1010 (1979)
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PostPosted: Wed Dec 31, 2008 12:50 pm Reply with quote
broommaster2000
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Crosman140 wrote:

Many guns lose their accuracy the faster the pellets go.


Hey C-140, where did you get that idea? As long as you keep the pellets under a 1000 Fps, there mostly won't be that much of an accuracy issue.

If you try to pump a pumper to such a level, if the seals hold up in the first place, then you're probably a bit to tired to fire the rifle accurately.

In spring guns, it can also be a bit of a problem, because the more powerful they get, the more recoil you'll get. So that also results in a loss of accuracy, especially when you're not using the right shooting technique!

If you can get someone else to do the pumping, I'm sure you'll have quite some power. Mr. Green

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PostPosted: Wed Dec 31, 2008 6:20 pm Reply with quote
Crosman140
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[quote="broommaster2000"]
Crosman140 wrote:

Many guns lose their accuracy the faster the pellets go.

Quote:

Hey C-140, where did you get that idea? As long as you keep the pellets under a 1000 Fps, there mostly won't be that much of an accuracy issue.

point made, thanks for your help...his gun is rated at about 700fps. If he pumps it 15-20 times, he could go past the speed of sound (1128 fps at sea level at 70 degrees F) and thus lose accuracy. Sorry that I didn't expound on that in my first post.

Quote:

If you try to pump a pumper to such a level, if the seals hold up in the first place, then you're probably a bit to tired to fire the rifle accurately.

Nope, look at the rifle he's talking about, daisy powerline 856. I guarantee, he won't be tired after pumping that 20 times. A very easy gun to pump...well, unless he's 6 years old.

_________________
My Critter Gitters
.22 Crosman 140 (1955)
.177 Crosman G1 (2009)
.177 Crosman 1377 (2009)
.177 Daisy 880 (1993)
BB Daisy Red Ryder (2012)
BB Crosman 1600 (1980)
BB Marksman 1010 (1979)
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modding a multi pump gun? 
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