lp10 regulator adjustment

[bryan]

I have a 8month old lp10 that is low in velocity, <130mps.
seals are fine, tried different pellets with slight improvement.

owners book does not mention if the regulator is adjustable/servicable.
no gunsmiths near me.

going to pull it apart next few days, any info would be good.

[jipe]

There is a thread somewhere on the forum explaining how to do it, below a copy of the explanations:

From the exploded diagram in the LP 10 manual, you would be turning screw #20 to do the adjustment, in for higher velocity and out for lower. However you will see in the exploded diagram that screw #10 appears to be a set screw which, when tightened, would prevent #20 from turning, so you must loosen #10 first, and then retighten after adjustment.

velocity plays a very crucial role, having very low velocity or very high velocity is sure to give you bad scores. the optimal velocity for steyr lp 10 is around 525 fps or 160mps . ( using finale match blue 7.7 gr pellets)
adjusting the velocity in steyr lp10 is very easy :

1. remove the grip with a 4 mm LN key.
2. remove the front sight if u have combro , fix the combro on the muzzle end, put a plastic rod in the barrel from the muzzle end to check that the path of the pellet travel is lying in the centre of the censor rings. adjust and fix the combro.
in case of using any box type chronograph like chrony, it is not required.
3.take 2-3 shots one by one and record the result.
4.now take a 1.5 mm LN key and a screw driver, look for a screw in the center of a C ring( it is a full ring holding a screw the ring has a cut on it when any sideways presure is applied on the ring it locks the screw) when you see from behind. in line with this C clip on the right side of the pistol there is a small hole which is infact the lock for the C ring, its a 1.5 mm LN screw
5 now the real task---losen the 1.5 mm LN screw 1 1/2 turn by turning anticlockwise. now turn the screw that is in the centre of the C ring in small increments of 2 to 3 minutes in clockwise direction, and tighten the side screw and take few shots, keep repeating the steps until you gete it closer to the 525fps/160mps mark approx.


.*** note the cut on the ring should be either on top or bottom, at 12Oclock or 6Oclock position, other wise the side screw will not press the C ring and the screw wont be locked.

**** after good use of 2-3 years normally the velocity spring needs change, and if the variation from shot to shot is more than 20 fps there may be other problems like the regulator malfunction, worn out O rings, oor simply the mechanism that hits on the valve pin has become sticky, for this please look for a more qualified person.

Rahul Sharma Ladakh

P.S. if that guy is living in Ladakh as written in his signature, obviously not a lot of gunsmith to help him out there !

[jonyb]

I have a 8month old lp10 that is low in velocity, <130mps.
seals are fine, tried different pellets with slight improvement.

owners book does not mention if the regulator is adjustable/servicable.
no gunsmiths near me.

going to pull it apart next few days, any info would be good.

just had my lp10 serviced by our steyr guru in u.k. harry preston. and he has stripped and cleaned my regulator and reset at 70 bar.the velocity was set at 160 m.p.s
this was with jsb match diablo 520gr 4,5

[bryan]

thanks, that was exactly what I needed.
had tried searching, but couldnt find anything.

any pictures of adaptors to set the lp10 regulators.

I have an adaptor to set my p70, (fwb air rifle) it is an aluminium block with a pressure guage that the regulator mounts to , then screw bottle to the regulator and adjust.
newer ones had the metering valve to allow you to simulate firing to ensure pressure goes back to the set point each time.

[dtayal]

My LP 10 was giving velocity problems. I changed the spring. But the problem continued. I have opened the regulator from the mounting and set it back. Air Pressure has stopped altogether! What could be wrong? Should I open & clean the regulator? Any special settings required on reassembly? How are you guys measuring he velocity?

Help.

Dtayal