Anyone recognize this muzzle brake/weight?

[whyzee]

I see now that the crosshatching is on the ‘inside’ of the tube, and not on the outside of the piston. Your camera focused so nicely that I thought the piston was still inside the tube, reminiscent of a bicycle Seatpost, inside of a walmart bike frame
Perhaps the crosshatching was to aid in seating the piston seal LOL
How does the stock look?
Good luck with your new project.

 

[hkshooter]

View attachment 314664View attachment 314662View attachment 314665View attachment 314666

I assume you are referring to Ed Krzynowek? Providing I spelled the name right.
This is very disturbing. I've had Ed tune two guns for me, an R1 and an R9. Both are smooth and buzz free, the R1 puts up some impressive numbers. Both are seemingly very refined and accurate. Now I wonder what's inside of these two. These rifles perform so well and are so slick and pleasant to shoot I can't imagine anything inside them like you are showing here.
If I could I'd take them apart just to see what's inside but I don't have the know-how or the tools.

 

[thumper]

I assume you are referring to Ed Krzynowek? Providing I spelled the name right.
This is very disturbing. I've had Ed tune two guns for me, an R1 and an R9. Both are smooth and buzz free, the R1 puts up some impressive numbers. Both are seemingly very refined and accurate. Now I wonder what's inside of these two. These rifles perform so well and are so slick and pleasant to shoot I can't imagine anything inside them like you are showing here.
If I could I'd take them apart just to see what's inside but I don't have the know-how or the tools.

Well if they are doing fine, just enjoy them.

 

[thumper]

I see now that the crosshatching is on the ‘inside’ of the tube, and not on the outside of the piston. Your camera focused so nicely that I thought the piston was still inside the tube, reminiscent of a bicycle Seatpost, inside of a walmart bike frame
Perhaps the crosshatching was to aid in seating the piston seal LOL
How does the stock look?
Good luck with your new project.

The stock has been refinished (no idea by who) and it's decently done. Personally, I hate refinished beech stocks and I don't care for this one either. But it's fine. It's not beat up at least.

The crosshacking is not in the compression area that the seal rides in, thankfully. It's just on the part that the piston skirt rides on. Won't hurt anything since the piston is harder than the tube. But I'd certainly rather it have been left alone, or at least not done so deep.

 

[KWK]

Nice little lathe! 9” South Bend?

Thanks, yeah that's an SB 9. I have two real nice ones. This one sat in storage at a factory about 50 years. Was custom built (special ordered) by South Bend for winding some kind of thread onto bobbins. Was never used as a lathe. I had to get a compound rest for it because it didn't have one the way it was set up. And no motor drive. The slides and bed had zero wear. I bought an original motor drive assembly with a huge 2 phase motor on it at that auction for $5.00. Yes, 2 phase motor! 2 phase service only exists in a few buildings in Philadelphia and someplace in Connecticut.
This lathe has another rare special order feature. Rare for a SB9 hardened bed. An X in the numbers on the bed near the tailstock indicates special order. This one has two X'es. I am the first one to cut metal on this lathe. Meticulously repainted with custom mixed original color. Bed length and model number were never stamped on the plate on the quick change gearbox. It's blank. First picture is how it came minus the chucks. Apron and lead screw are removed already. Diamond in the rough.

 

[Heathrow]

I assume you are referring to Ed Krzynowek? Providing I spelled the name right.
This is very disturbing. I've had Ed tune two guns for me, an R1 and an R9. Both are smooth and buzz free, the R1 puts up some impressive numbers. Both are seemingly very refined and accurate. Now I wonder what's inside of these two. These rifles perform so well and are so slick and pleasant to shoot I can't imagine anything inside them like you are showing here.
If I could I'd take them apart just to see what's inside but I don't have the know-how or the tools.

Detailed strip down instructions/guides/pictorials/youtube videos abound - if you are careful and pay attention to detail it can be done - being able to service/inspect your own springers will take your airgunning experience and knowledge to the next level. If you purchase rifles second hand this practical know-how becomes increasingly important.

 

[1BadDart]

Thanks, yeah that's an SB 9. I have two real nice ones. This one sat in storage at a factory about 50 years. Was custom built (special ordered) by South Bend for winding some kind of thread onto bobbins. Was never used as a lathe. I had to get a compound rest for it because it didn't have one the way it was set up. And no motor drive. The slides and bed had zero wear. I bought an original motor drive assembly with a huge 2 phase motor on it at that auction for $5.00. Yes, 2 phase motor! 2 phase service only exists in a few buildings in Philadelphia and someplace in Connecticut.
This lathe has another rare special order feature. Rare for a SB9 hardened bed. An X in the numbers on the bed near the tailstock indicates special order. This one has two X'es. I am the first one to cut metal on this lathe. Meticulously repainted with custom mixed original color. Bed length and model number were never stamped on the plate on the quick change gearbox. It's blank. First picture is how it came minus the chucks. Apron and lead screw are removed already. Diamond in the rough.

View attachment 314700
View attachment 314695

You did a fantastic job on it. I have one that was made for a government contract, it was made in the 60's if I interpreted the serial number correctly.

 

[KWK]

You did a fantastic job on it. I have one that was made for a government contract, it was made in the 60's if I interpreted the serial number correctly.

A 60's SB9 will have a plunger type tumbler (all 10k's have plunger) gear set up instead of the older lever with a cinch bolt. Neat thing about the older style is you can adjust the lash in the tumbler gears for very quiet power feed with minimal jingle. I'm considering nylon end gears for extra quiet operation.
Sorry if we're hijacking a bit here.

 

[hkshooter]

Who could I send these to to have them looked over inside?

 

[Heathrow]

Who could I send these to to have them looked over inside?

crickets chirping - the universe is telling you to take a look yourself.

Kidding aside, if you were nearby I’d say come on over and let’s take a look.

 

[Arzrover]

"My only real beef is with the transfer port, it has been "worked on" from the inside and counterbored fairly deep. It's kinda slammy feeling, probably because the port is effectively bigger. Worst case I'll bore it completely out and press in a sleeve to the size I want. But it won't hurt it the way it is."

Years ago, Maccari experimented with port size by drilling and tapping the port to use some grub screws that were drilled to different sized holes. They were Loktited in place and that also helped seal the threads for blowby.

I've kept that in mind for a couple of my projects... rather than weld and drill or sleeve.

Bob

 

[hkshooter]

crickets chirping - the universe is telling you to take a look yourself.

Kidding aside, if you were nearby I’d say come on over and let’s take a look.

Thanks. I'm in Indiana.
Looking myself isn't in the cards right now. Lack of time to learn how to do and then also do is the reason I contracted someone else to do the tune in the first place. I have enough going on without adding another hobby.
These guns are remarkable performers and as smooth as can be, I can't imagine they'd look anything like the pics here. Still makes me wonder though. I guess if I ever have problems I'll find out then.