A question for the technically gifted

[tjk]

A few weeks ago, I noticed that after breaking the barrel on my Crosman rifle, the barrel would freely swing after initial cocking. I heard somewhere that you should be able to position the barrel in any given place without it swinging freely. I removed the stock and tightenned up the pivot boltas much as posible,and still it swings as described above. When returned to the shooting position, there isn't any sideways movement, but broken there is some side to side play in it. I figure the plasticwashers/bushings are worn out and thought of replacing them with some type of metal/SS 'shim' washers, but not sure what thickness to get. Any suggestions???? Does this sound like a good fix,...or am I once again,....in right field on this issue?!?!?!? Thanks, tjk

your on the right track.
i use brass washers for a G 1.
you need to snap the verns on it to know what size washer to start with.
they will probably need to be fitted.
so the dremmel or lathe will work or chuck it up in a drill.
you may need to clean up the seat that the washers fit into as well.
even after doing this to the G 1 the barrel does not stay in place in any position after cocking.
but it's better then the plastic washers that are stock.
Fix does some really NICE hinge work.

[Splash]

Thomas, as long as you don't have any play after cocking, I wouldn't worry too much about it. In order to replace them with anything other than Factory, you'll need the tools to machine the parts. If you ask Bob real nice he may make you a set out of delrin.

[tjk]

Super Big Thanks Fella's. Craig, Thought brass might be better after I posted this question, unfortunately I'm not much of a machinist, and have no idea what 'vernes' are. Slang for Micrometer maybe?!?!?!?! LOL's Also, thanks  Paul for the specks,....been roaming through the McMasters-Carr book this morning, maybe I'll get lucky!!!!! But I think I'll go with the old saying,...'.if it ain't broke, leave it the heck alone'!!!!! Sage advice Mike, thanks. If things start going South, you can bet the farm I'll be giving our pal a call!!!!! I thought about the delrin too, as it might not require as much lube as a 'metal to metal' joint. But then again, I'm not a machinist!!! More of a "bubble-gum mechanic"!!! LOL's Thanks again Guys, GTA is a great place to be!! tjk

[gamo2hammerli]

All three of my Crosmans' barrels swing freely after cocking (Storm XT, Sierra Pro and even a really old Expotec).....but not side to side.  Once in shooting position, the barrels are snug and tight.  I think it's when it's in the closed position and if the barrel move sideways that's when you'll definitely lose accuracy......

[tjk]

Thanks Stan, so far so good in the barrel lock position!!! Just the slight side to side play after the cocking piston shear connection. So I reckon we're good to go for a while!!!! But I'm sure it was my shooting that threw the accuracy off,.....plus maybe a few 'cold ones'!!! Thanks, tjk

Thomas,
"verns"   vernier calipers.

[tjk]

Thanks for setting me straight on that one Craig,....looked them up in the MMC book, and I've been calling them by the wrong name!!!! I've got a set of them with a 'true' micrometer at home. Min are digital with both metric and inch read-outs!!!! I reckon that peeves you when non-machinist call tools by the wrong name!!!!! ......Like when I hear people refer to l concrete as cement!!!!!! I'm a carpenter by trade, But you get the idea. LOL's tjk

Thomas,
that mcmaster catalog is like a candy store, i love it.

[tjk]

Like the Holy-Grail of,......everything!!! LOL's tjk

[gunsup0331]

I used 5/16" grade 8 washers from the hardware store, the od/id is spot on and a little cleaning up gets them fitting perfect. I can tighten my quests breech bolt till the barrel ALMOST stays stationary, but i just keep it tight enough to where it wont swing freely about.

[tjk]

Thanks for the tip Brandon, I'll get some this weekend, and if needed later on down the road, I'll try your suggestion. Nice to know some things can be found locally!!!!! Thanks Again! tjk