Adjusting the power of a Steyr Lp 10

Dev · Post by **Dev** » Thu Jun 03, 2010 3:49 am

I bought a brand new one and have over the last three months realised that the shot count isn't where it should be. One air cylinder yields about 70 shots before touching the yellow. Normally one should get about 170 shots per fill or so I have read. I think (have not been able to chrono yet) that it maybe shooting harder than it should. I will run it over a chrono but does anyone know how to adjust the power down, just in case?

Please don't beat me up for this sacrilege but I need to learn a lot.

Regards,

Dev

ken4all · Post by **ken4all** » Thu Jun 03, 2010 4:29 am

The velocity of my LP10 from factory was about 165 m/s. I kept it like this.

In the Steyr technical video they say it should be between 155 and 160.
Have look at http://www.youtube.com/steyrsportwaffen ... knIAlut_hE

I just changed to a Morini, and that does only 147m/s. On thing I can notice after only 3 practice sesions with it, is that it's less forgiving than my Steyr. But of course that could also be due to me, it will take some time to get used to a new pistol.

Richard H · Post by **Richard H** » Thu Jun 03, 2010 7:11 am

Remove the grip and at the back there is a large slot screw that is the velocity adjustment. Before adjusting the velocity Posen the small set screw that locks it on the right side. After adjusting relock the set screw make sure that the slit in the split ring around the velocity adjustment screw is pointing at 12 or 6 o'clock.

170 shots might be a bit much 120-140ish is realistic at around 525 fps. I wouldn't adjust it until you have access to a chrony.

RobStubbs · Post by **RobStubbs** » Thu Jun 03, 2010 3:03 pm

As Richard says, chrono it first and adjust the velocity if it's too fast.

Rob.

deadeyedick · Post by **deadeyedick** » Thu Jun 03, 2010 7:47 pm

What they don't explain correctly in the owners manual is that the yellow section is included in the cylinder capacity. Its simply coloured yellow as an indicator, similar to traffic lights.
I filled a cylinder, and started firing until I had reached the lower limits of the yellow. Sure enough, around 180 shots had been fired, and my pistol chronographed 527 feet/sec.
The 200 bar in the main cylinder moves into a n internal chamber within the pistol that holds about 80 bar, which is the actual propelling force, not 200.
Moral of the story is not to pay attention to the yellow section on the gauge, as there is still more than 80 bar of compressed air left until you almost reach the bottom.

Dev · Post by **Dev** » Fri Jun 04, 2010 1:07 am

Very valid points gents. I will first chrono the pistol and then see if adjustments are required. Thank you for the tips on how to do it, this I will keep in my records.

Warm Regards,

Dev

joker · Post by **joker** » Fri Jun 04, 2010 5:46 am

deadeyedick wrote:What they don't explain correctly in the owners manual is that the yellow section is included in the cylinder capacity. Its simply coloured yellow as an indicator, similar to traffic lights.
I filled a cylinder, and started firing until I had reached the lower limits of the yellow. Sure enough, around 180 shots had been fired, and my pistol chronographed 527 feet/sec.
The 200 bar in the main cylinder moves into a n internal chamber within the pistol that holds about 80 bar, which is the actual propelling force, not 200.
Moral of the story is not to pay attention to the yellow section on the gauge, as there is still more than 80 bar of compressed air left until you almost reach the bottom.

This point I have also confirmed on my LP2 - I can get 200 shots at 520 fps. The fall off at the end is very fast (within 10shots) and very obvious even without a chrono attached (sound, bad target punching and droop).