GTA

All Springer/NP/PCP Air Gun Discussion General => PCP/CO2/HPA Air Gun Gates "The Darkside" => Topic started by: Missed-Em on August 19, 2018, 09:42:14 AM

Title: Urban probe problem
Post by: Missed-Em on August 19, 2018, 09:42:14 AM

My Urban probe will fill the cylinder but leaks around the probe as it fills.  Have replaced both O-rings and still the problem.  So, what are the possible causes/solutions?  I can't find the correct O-ring sizes, anyone have it?  While I'm asking all these questions, how about a location for an Urban schematic?

Thanks - Steve

Title: Re: Urban probe problem
Post by: avator on August 19, 2018, 11:02:09 AM

Mine always has seeped just a little. I can hear a faint whistle as I fill. I still manage to get it full everytime and I have a compressor so I don't sweat it much. Would be nice to find a foster conversion tho.

Title: Re: Urban probe problem
Post by: Back_Roads on August 19, 2018, 11:10:32 AM

 A couple wraps of teflon tape inside the o-ring groves may give a better seal, if o-rings are not fully seating. It worked for me in a pinch.

Title: Re: Urban probe problem
Post by: MB on August 19, 2018, 12:41:16 PM

Here are the orings : http://www.airgunspares.com/store/product/16110/BSA-BSA-Buccaneer-Probe-O-Ring-Part-No.-16-9048/ (http://www.airgunspares.com/store/product/16110/BSA-BSA-Buccaneer-Probe-O-Ring-Part-No.-16-9048/)

You should a light coat of Molykote grease on them :

http://www.airgunspares.com/store/product/12807/BSA-Molykote-Grease-Sachet/ (http://www.airgunspares.com/store/product/12807/BSA-Molykote-Grease-Sachet/)

Title: Re: Urban probe problem
Post by: MB on August 19, 2018, 12:45:15 PM

Schematic

Title: Re: Urban probe problem
Post by: avator on August 19, 2018, 01:52:25 PM

Thanks for that Mike.

Title: Re: Urban probe problem
Post by: Missed-Em on August 19, 2018, 07:31:21 PM

Sorry, but I must have slept thru the Urban 101 class. I believe the Phox is the Brit version of the Urban, but how does the Coyote, et. al. fit in?

Title: Re: Urban probe problem
Post by: MB on August 19, 2018, 10:23:18 PM

Phox Urban, Chacal, Coyote, BSA Buccaneer, essentially the same internals

Title: Re: Urban probe problem
Post by: MB on August 19, 2018, 10:25:38 PM

You can see the similarities here, thanks to Marc In Iowa

https://www.gatewaytoairguns.org/GTA/index.php?topic=136008.0 (https://www.gatewaytoairguns.org/GTA/index.php?topic=136008.0)

Title: Re: Urban probe problem
Post by: Missed-Em on August 20, 2018, 10:22:02 AM

Thanks Mike.