GTA
Airguns by Make and Model => Daisy Airguns => Topic started by: jkingrph on May 27, 2022, 01:54:58 PM
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Picked up a 747 and the cocking lever is very loose, uncocked turn the gun to the side and the lever flops open, just about all the way. Is there any way to tighten it up. The gun seems to shoot well by the sound of firing and sound a pellet makes hitting my pellet trap. I am thinking about resealing it as the foam wiper looks bad, so will go ahead and do a complete reseal while I am at it.
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you do need a felt to be functional. as far as flopping open... the head of the piston is adjustable. look up how to adjust it... many videos made on it. dont get greedy... 395 fps is good (you'll understand the comment after you fix your gun ;)lol
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I had one.
I had a 777 too.
There is a rivet in the cocking linkage I think that has loosened up.
Maybe smack it with a hammer.
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you do need a felt to be functional. as far as flopping open... the head of the piston is adjustable. look up how to adjust it... many videos made on it. dont get greedy... 395 fps is good (you'll understand the comment after you fix your gun ;)lol
Piston adjustment made absolutely no difference. Not knowing what the problem is I have a new cocking lever assembly on order as well as a complete reseal kit.
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I had one.
I had a 777 too.
There is a rivet in the cocking linkage I think that has loosened up.
Maybe smack it with a hammer.
I see that rivet, it appears to have three stake marks on each side, May try to enlarge those. Just went out to the garage and tried it The rivet was a bit loose but tightening it did nothing. I got my chronograph out and the best it would do is about 305 fps. so I suspect the 0-ring is not tight enough. When I get may parts in all the 0-rings will be replaced, for starters.
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I got my parts in late last week, and finally got around to working on it today. I had picked up a reseal kit that used polyurethane O-rings and some stacked/split rings for wipers,that look much like rings in a internal combustion engine. along with a new valve assembly , and finally a new cocking lever assembly as the rivet had worn the hole in the arm . Kit came with a tiny tube of superlube silicone grease which I used along with some superlube silione oil.
Getting the barrel with the valve assembly off was a job as everything was very tight, then getting the piston with those polyurethane wiper rings which were tight was not easy. When I finally got it back together no flopping lever anymore, yeah, and I got a lot of velocity back. When I tested it the other day it was barely hitting 300fps, mostly upper 200's today it was around 390
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today it was around 390
:) its perfect. clean the bore, find its happy pellets and enjoy one of the most underrated air pistols ever made.
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I have been doing just that. If these things were still being made, and a reasonable price they should sell well. Easy to cock, accurate and quiet. I am liking the better than the Crosman 22xx types I built last year. No drop off in power in cold temp or if shooting quickly to cool the CO2 cart.
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different beasties... i like the 7x7 guns, but my 22xx guns can hunt out to 35 yards without a problem. PCP or Co2. I actually like the Co2 better. its easy to top off, its self regulating and believe it or not, temp makes less of a difference than you think (most applications in .22 differ about 2 fps per degree, and on a gun that shoots mid 5s that is about .3% variation. if you start shooting at 75 degrees and it goes up to say 90 degrees, you are looking at 30 fps difference. Zeroed at say, 25 yards, a target at 35 yards is 2.17 in below the line of sight at 75 deg, and only 1.86 at 90 deg. the difference is literally .30 of an inch at its max hunting limit.). Co2 gets a bad rep, in my opinion. its actually a great propulsion system.
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I think the thing I was noticing more was the drop off in power as a CO2 cart depletes. They can get to the point where I see the pellet looping out toward the target. No, I am not going to give up my 22xx types, but I am liking these 7x7 types for a quick go, no need to have an extra cart handy or oil to place on tip( I did have two carts stick in the housing, requiring a disassembly of the gun to get it out. I since learned to put a mirror polish on the tip of that piercing pin, and have had no trouble since. I built up one for my grandson last Christmas and gave it the same treatment.
Right now I am looking at getting some wood grips for my 747's
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Jeff, check out Vern Austin (Mystery Man) on ebay for grips. I have several pairs for my 747s and 777s and fit/finish is superb! They are beautiful and very reasonable.