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 Post subject: Barrel Tightness
PostPosted: Fri Aug 24, 2018 5:51 pm 
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Joined: Fri Jan 25, 2013 9:51 pm
Posts: 253
Location: Dryden, Ontario
How tight do you guys set your barrel on Springers? Should the barrel fall easily, when you let it go after cocking or should it stay in any position on the clock?(Phantom and Quest)


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 Post subject: Re: Barrel Tightness
PostPosted: Fri Aug 24, 2018 7:15 pm 
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Joined: Fri Jul 27, 2018 10:34 pm
Posts: 284
Location: Bowmanville, Ontario
Justmyluck wrote:
How tight do you guys set your barrel on Springers? Should the barrel fall easily, when you let it go after cocking or should it stay in any position on the clock?(Phantom and Quest)


Check out my post about missing my Benjamin. I do a lot of work to the hinge.
It's not so much how easily the barrel falls, but how much play there is in the hinge. If there is side to side play, or up and down, it will effect accuracy.

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Fully rebuilt Benjamin .22 classic
Some other junk rifles


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 Post subject: Re: Barrel Tightness
PostPosted: Fri Aug 24, 2018 7:27 pm 
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Joined: Mon Sep 05, 2005 10:55 pm
Posts: 6834
Location: Rocky Mtn Hse Alberta
The barrel should stay put anywhere in the ‘after-cocked’ stroke.
Smooth resistance just right

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 Post subject: Re: Barrel Tightness
PostPosted: Fri Aug 24, 2018 8:01 pm 
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Joined: Mon Aug 08, 2016 7:23 am
Posts: 2631
Location: Somewheres near the Atlantic
Till I cannot get any side to side wiggle.


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 Post subject: Re: Barrel Tightness
PostPosted: Fri Aug 24, 2018 8:58 pm 
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Joined: Fri Jan 25, 2013 9:51 pm
Posts: 253
Location: Dryden, Ontario
OK, one gun barrel free falls like dropping a rock and I discovered side to side wobble.The other gun barrel falls slowly but doesn't stay, can't detect any wobble though.This gun is very accurate and it never occurred to me the different tensions in the barrel would make one air rifle accurate and the other all over the place.I wonder if I should leave the accurate Phantom alone or tighten it up also.The Quest gets done for sure.Thanks everyone.


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 Post subject: Re: Barrel Tightness
PostPosted: Fri Aug 24, 2018 9:10 pm 
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Joined: Thu Mar 01, 2018 8:01 pm
Posts: 201
Location: Klowntown BC
is this a simple 'tightenthescrew' adjustment?
..or effected by bushings/washers etc?
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enquiring minds
want to know


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 Post subject: Re: Barrel Tightness
PostPosted: Fri Aug 24, 2018 9:10 pm 
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Joined: Fri Jul 27, 2018 10:34 pm
Posts: 284
Location: Bowmanville, Ontario
For some reason, previously, when I've tightened the barrel screw, accuracy goes bonkers then it seems to settle down after a little while. But definitely don't want any wiggle. You gotta think, every time you firez that barrel is flying all over the place before the pellet even leaves.

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Fully rebuilt Benjamin .22 classic
Some other junk rifles


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 Post subject: Re: Barrel Tightness
PostPosted: Sun Aug 26, 2018 9:45 pm 
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Joined: Sat Jan 25, 2014 9:16 pm
Posts: 1233
Location: United States
If you tighten the bolt too much you bow the ears inwards and the washers won't be able to keep it true. Ideally you need to shim the (metal) washers w/ thin plastic ones to take up that slack. Ideally, imo, the bolt should only snug it all up. If you're using the oem plastic washers you're kinda screwed bc they don't do much, if so you should swap in some metal ones that fit perfectly, or fit perfectly w/ plastic shims. Quality guns are machined to take very thin steel washers so the bolt is just there to hold it together as described. Also, the Crosman bolts have a tapered head so if tightened too much they may lock up for good. Like how a tapered drill chuck can be put on by hand but require pounding and/or a wedge to remove. Car ball joints are similar too. Usually the machine work of a chinese gun isn't good enough to cause this lockup, but it can happen. Then you have to drill out the head and replace the bolt which is a pita.
If the assy is loose, either loose period or you have the oem plastic washers then the barrel relies more, or entirely, on the pressure of the latch pushing the barrel block against the barrel bolt. The problem with this is the bolt is not precision either so it may teter and be diff each time, and any rotation of the bolt will change where the barrel points.
Sux but it is what it is. You can sand the bolt to be more true, and the bushing/sleeve it sits in but usually the bushing is good to go. So I sand the bolt and make metal washers + plastic shims all fitted to be snug w/o the bolt.
Carpenter has a thread of how he's doing all this, but he has cool tools most of us don't, but you can see the jist of the bennies and do what you can to make it better.


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 Post subject: Re: Barrel Tightness
PostPosted: Sun Aug 26, 2018 9:52 pm 
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Joined: Thu Mar 01, 2018 8:01 pm
Posts: 201
Location: Klowntown BC
thank you.


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 Post subject: Re: Barrel Tightness
PostPosted: Sun Aug 26, 2018 11:34 pm 
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Joined: Fri Jul 27, 2018 10:34 pm
Posts: 284
Location: Bowmanville, Ontario
Chevota wrote:
Carpenter has a thread of how he's doing all this, but he has cool tools most of us don't, but you can see the jist of the bennies and do what you can to make it better.


I am willing to help or machine small parts if someone needs something. Feel free to pm me.

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Shawn


Fully rebuilt Benjamin .22 classic
Some other junk rifles


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