Can someone help me with sterlings?

grande · 01-06-2007, 01:08 PM

I'm a sterling newbie and need all the help I can get.
With HPA (HP reg) my gun only makes a little POP. What Am I doing wrong?
I know the springing will lead to higher/lower velocity, any pics of the springs to use?

I also got thisreally long spring with it, what is it for? I feel stupid.

Thanks guys

THE-SHOOTIST · 01-06-2007, 01:59 PM

You haven't stated what type/model/year Sterling you have, so it's kinda hard to help you. Most Sterlings will run fine at about 800 psi, so a "High Output" HPA tank should work. My Sterling has a "factory lightened" hammer, and is a VERY old Sterling, so I had to get creative. I sent it to Palmers for a detent, and a valve tune, and still chronoed in the low 240's due to the hammer's light weight. I resolved my velocity issues by running liquid CO2.
Pics of your rig will help me, also pics of your hammer, if you have a "lightened", you may want to replace it.
Also, now that Sterlings have re-entered the market, you can get parts far more easily, so a new set of the "velocity adjustable" internals and springs will make tuning yours muck easier.

grande · 01-06-2007, 02:23 PM

My sterling is old as well. I'll take pics of everything

EDIT:
I are take pictars

grande · 01-07-2007, 04:08 AM

as you can see theres this short and fat screw on the floor and a long one in the bag. Just wondering what the long one is for?

It has a adjustable bolt but all it does is restrict the airflow. I tried it with original bolt and it just made this little pop sound.

What does changing the lenght of the rod going to the center of the pump do? Doesn't it put more tension in the spring = higher velocity?

I don't know ****, please help me out!

Walker · 01-07-2007, 04:38 AM

The short spring is for the valve, the long one is for the hammer.

Take a look at this site... It has a lot of info on the Sterling. If you look under General Q & A you will find a couple animations on the operation of the Sterling.

http://www.geocities.com/lea_wu/sterling/index.html

Changing the length of the rod, changes the point at which the sear aligns with the hammer. This will affect the point at which the pump arm must be in order for the trigger to trip the sear. Don't adjust it unless absolutely necessary.

Good Luck......

Walker

grande · 01-07-2007, 05:43 AM

it had that short spring as MAIN SPRING!

I also recieved two similar sterlings in a trade, they didn't have a main spring at all (they didn't work either). Now the puzzle is coming together!

Thanks guys for help, as always.

grande · 01-07-2007, 06:41 AM

Ok, it made a louder sound now = more velocity, still not enough. However when I tried one of the longer ones it leaked down the barrel (valve spring too weak for it). It looks like the really long springs he gave me were for spyder and he cut them to make a right strenght spring.

Walker · 01-07-2007, 11:23 AM

Without an adjustable bolt (restricts or permits air flow), velocity adjustment is a matter of balancing the springs. I get mine so that it shoots high, then bring it back down with a regulator.

Walker

jhyan · 01-07-2007, 06:14 PM

I use cut spyder springs in my sterling, since I don't have a velocity adjust bolt or pickup (the thing that hooks up with the hammer).

The spyder spring should be cut so it is just long enough to not rattle in the gun when it is not cocked. If you are having to compress it much to get it in the gun it is too much. I also pretty much only use the weakest spring from the spyder spring kit, as the two hard ones get me up in the 350fps and 400fps range

THE-SHOOTIST · 01-08-2007, 05:41 PM

You have the "Factory Lightened" hammer as I do. As I said, a valve job from Palmer's helped, but I was still low velocity-wise, so I'm running it on liquid. I do however dislike the large cloud discharged when I fire the gun, so I'm looking into a new set of internals for mine.
Beauty of a Sterling by the way. Mine's red, and the site rail is milled at an angle where the barrel screws in, same pump handle. Be careful with these pump handles, they are prone to cracking.

01-06-2007, 01:08 PM	#1 (permalink)
grande Seasoned Member Join Date: Nov 2006 Location: Finland Posts: 599	Can someone help me with sterlings? I'm a sterling newbie and need all the help I can get. With HPA (HP reg) my gun only makes a little POP. What Am I doing wrong? I know the springing will lead to higher/lower velocity, any pics of the springs to use? I also got thisreally long spring with it, what is it for? I feel stupid. Thanks guys

01-06-2007, 02:23 PM	#3 (permalink)
grande Seasoned Member Join Date: Nov 2006 Location: Finland Posts: 599	My sterling is old as well. I'll take pics of everything EDIT: I are take pictars Last edited by grande; 01-07-2007 at 04:02 AM.

01-07-2007, 04:38 AM	#5 (permalink)
Walker MCB Member Join Date: Apr 2006 Location: Spokane, WA Posts: 2,200	The short spring is for the valve, the long one is for the hammer. Take a look at this site... It has a lot of info on the Sterling. If you look under General Q & A you will find a couple animations on the operation of the Sterling. http://www.geocities.com/lea_wu/sterling/index.html Changing the length of the rod, changes the point at which the sear aligns with the hammer. This will affect the point at which the pump arm must be in order for the trigger to trip the sear. Don't adjust it unless absolutely necessary. Good Luck...... Walker __________________ Member of the Old Farts Paintball Players Association (OFPPA) "Where You Wrap Up the Day, With Beer and Bengay!" Nelson Owner's Group Last edited by Walker; 01-07-2007 at 11:19 AM.

01-07-2007, 11:23 AM	#8 (permalink)
Walker MCB Member Join Date: Apr 2006 Location: Spokane, WA Posts: 2,200	Without an adjustable bolt (restricts or permits air flow), velocity adjustment is a matter of balancing the springs. I get mine so that it shoots high, then bring it back down with a regulator. Walker __________________ Member of the Old Farts Paintball Players Association (OFPPA) "Where You Wrap Up the Day, With Beer and Bengay!" Nelson Owner's Group

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01-06-2007, 01:59 PM	#2 (permalink)
THE-SHOOTIST MCB Member Join Date: Apr 2006 Posts: 248	You haven't stated what type/model/year Sterling you have, so it's kinda hard to help you. Most Sterlings will run fine at about 800 psi, so a "High Output" HPA tank should work. My Sterling has a "factory lightened" hammer, and is a VERY old Sterling, so I had to get creative. I sent it to Palmers for a detent, and a valve tune, and still chronoed in the low 240's due to the hammer's light weight. I resolved my velocity issues by running liquid CO2. Pics of your rig will help me, also pics of your hammer, if you have a "lightened", you may want to replace it. Also, now that Sterlings have re-entered the market, you can get parts far more easily, so a new set of the "velocity adjustable" internals and springs will make tuning yours muck easier.

01-07-2007, 04:08 AM	#4 (permalink)
grande Seasoned Member Join Date: Nov 2006 Location: Finland Posts: 599	as you can see theres this short and fat screw on the floor and a long one in the bag. Just wondering what the long one is for? It has a adjustable bolt but all it does is restrict the airflow. I tried it with original bolt and it just made this little pop sound. What does changing the lenght of the rod going to the center of the pump do? Doesn't it put more tension in the spring = higher velocity? I don't know ****, please help me out!

01-07-2007, 05:43 AM	#6 (permalink)
grande Seasoned Member Join Date: Nov 2006 Location: Finland Posts: 599	it had that short spring as MAIN SPRING! I also recieved two similar sterlings in a trade, they didn't have a main spring at all (they didn't work either). Now the puzzle is coming together! Thanks guys for help, as always.

01-07-2007, 06:41 AM	#7 (permalink)
grande Seasoned Member Join Date: Nov 2006 Location: Finland Posts: 599	Ok, it made a louder sound now = more velocity, still not enough. However when I tried one of the longer ones it leaked down the barrel (valve spring too weak for it). It looks like the really long springs he gave me were for spyder and he cut them to make a right strenght spring.

01-07-2007, 06:14 PM	#9 (permalink)
jhyan MCB Member Join Date: Apr 2006 Posts: 926	I use cut spyder springs in my sterling, since I don't have a velocity adjust bolt or pickup (the thing that hooks up with the hammer). The spyder spring should be cut so it is just long enough to not rattle in the gun when it is not cocked. If you are having to compress it much to get it in the gun it is too much. I also pretty much only use the weakest spring from the spyder spring kit, as the two hard ones get me up in the 350fps and 400fps range

01-08-2007, 05:41 PM	#10 (permalink)
THE-SHOOTIST MCB Member Join Date: Apr 2006 Posts: 248	You have the "Factory Lightened" hammer as I do. As I said, a valve job from Palmer's helped, but I was still low velocity-wise, so I'm running it on liquid. I do however dislike the large cloud discharged when I fire the gun, so I'm looking into a new set of internals for mine. Beauty of a Sterling by the way. Mine's red, and the site rail is milled at an angle where the barrel screws in, same pump handle. Be careful with these pump handles, they are prone to cracking.