Search found 8 matches

by Skid
Tue Apr 09, 2019 10:46 am
Forum: TECHNICAL
Topic: S300 pot and Venturi screw factory settings?
Replies: 11
Views: 4419

Re: S300 pot and Venturi screw factory settings?

Don't get me started on Hoover's. I had to buy her the latest Dyson because apparently the Miele was too heavy to manage on the 3 occasions each year she used it :|

Guess I better not mention all the shotguns and motorbikes either ;)
by Skid
Mon Apr 08, 2019 7:49 pm
Forum: TECHNICAL
Topic: S300 pot and Venturi screw factory settings?
Replies: 11
Views: 4419

Re: S300 pot and Venturi screw factory settings?

Well that was easy. Fitted the new pot, valve, valve spring and another new mainspring just to be safe. I also really polished the hammer guide rod so it was like a mirror. First shot was well into FAC territory using my standard Bisley LRG, so screwed the Venturi screw in a touch to bring it back t...
by Skid
Thu Mar 28, 2019 2:37 pm
Forum: TECHNICAL
Topic: S300 pot and Venturi screw factory settings?
Replies: 11
Views: 4419

Re: S300 pot and Venturi screw factory settings?

To quote a favourite phrase from an old apprentice master of mine many years ago......The hammer rail is as dry as a witches tit. I did initially try with a minuscule dab of oil although it made no difference but after speaking with AA a couple of weeks back they also said to keep it dry because lon...
by Skid
Wed Mar 27, 2019 11:30 pm
Forum: TECHNICAL
Topic: S300 pot and Venturi screw factory settings?
Replies: 11
Views: 4419

Re: S300 pot and Venturi screw factory settings?

Hi BBF. Thanks for the tips but yes, gun cocks as smooth as before, no undue effort needed. The seal between the barrel/block is still good and in place, I made a point of checking it each time it was stripped and reassembled but I've ordered another new one for when I replace the valve and pot anyw...
by Skid
Wed Mar 27, 2019 5:54 pm
Forum: TECHNICAL
Topic: S300 pot and Venturi screw factory settings?
Replies: 11
Views: 4419

Re: UPDATE - S300 pot and Venturi screw factory settings?

For anyone in a similar situation, I rang Air Arms and spoke to a really helpful tech guy. Good news is he gave me a start point for the Venturi screw.....one third covering the hole. The bad news is he's just as stumped as me why the muzzle velocity had dropped so much so suddenly :cry: The interes...
by Skid
Tue Mar 26, 2019 1:36 pm
Forum: TECHNICAL
Topic: S300 pot and Venturi screw factory settings?
Replies: 11
Views: 4419

Re: S300 pot and Venturi screw factory settings?

Thanks for the info TenMetrePeter. I was hoping for an easy solution with a simple base setting but that's too much to hope for when engineering is involved ;) I fitted a new hammer spring when I changed all the seals so suspect the firing valve and/or its spring. For the sake of about £25 I'm going...
by Skid
Mon Mar 25, 2019 9:23 am
Forum: TECHNICAL
Topic: S300 pot and Venturi screw factory settings?
Replies: 11
Views: 4419

Re: S300 pot and Venturi screw factory settings?

It looks like the new pot will be the same design now as the 400 series pot from the parts lists I've seen online. They obviously updated it. Which means I can set it to 57/58mm from what I've read on here unless you know different. I still need to know what the air metering screw should be set at t...
by Skid
Fri Mar 22, 2019 6:07 pm
Forum: TECHNICAL
Topic: S300 pot and Venturi screw factory settings?
Replies: 11
Views: 4419

S300 pot and Venturi screw factory settings?

Hi all, new member here although I've had my S300 from new and never even thought about joining until now :D Not sure if anyone else is still using this antique but the gun is an original S300 .22 classic, non-FAC 12 ft/lbs single shot version which I bought about 20 years ago.....annoyingly just a ...