Chinese Airgun Forum: Re: RE: Blow out disk

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Re: RE: Blow out disk July 10 2008 at 11:11 PM		Somewhat tuned (Login gunster) YFOT
Response to RE: Blow out disk

It has a tapered valve stem,Some extra holes drilled around the puncture pin.It has a 1/16" probe at 1 3/8 inch length,and barrel porting.I had the spring shimmed some but I didn't like the effect on the trigger so I changed that.It has the icemaker tube seal replacement. I expected 780fps or better with hpa but 735 is the best I've seen.My umarex 850 and also my qb78 will break 700fps with co2 so I'm disappointed with this one but it is a very accurate gun.

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Re RE blow out disk - Jay J on Jul 11, 2008, 1:13 AM

I think Mike uses a trick valve spring..(taper wound?) that helps output - classicalgas on Jul 12, 2008, 11:09 AM

Still trying - James From Ok on Jul 13, 2008, 2:14 PM

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