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 1 
 on: September 12, 2017, 04:15:24 AM 
Started by steveinla - Last post by steveinla
Hi rkr, and Rancidtom,
Thanks for posting those "O" ring sizes. I'm making a list.
R, Steve

 2 
 on: September 10, 2017, 12:17:48 AM 
Started by Cantshoot - Last post by echo1974
Its a real shame you have stopped your hands on stuff darrin, as ive been very pleased with your work/advice in the past. But family comes first. Good luck m.

 3 
 on: September 08, 2017, 04:33:34 PM 
Started by steveinla - Last post by RANCiDTOM
Pellet probe rings:
.177  2mm bore 1.5mm cord thickness commonly sized as 2x1.5mm
.22  3mm bore, 1.5mm cord thickness commonly sized as 3x1.5mm
Use NBR70 grade.
I haven't got a .25 bore barrel and pellet probe to measure at the moment so can't confirm the size of the .25 pellet probe ring however BS006 does sound small, are you sure it's not BS007? I'm pretty sure I've fitted one in the past, BS007 equates to 3.68 x 1.78mm

 4 
 on: September 08, 2017, 08:34:23 AM 
Started by steveinla - Last post by rkr
Well, I dug out my spare parts box:

Air tube O-rings: 2.62 x 18.72 = -116
Transfer port O-rings: 1.78 x 5.78 = -009
Fill probe O-rings: 1.78 x 4.47 = -008
Pellet probe O-rings:

.177 = 1.45 x 2.1 or thereabouts - perhaps 1.5 x 2.0
.22 = 1.6 x 2.9 or thereabouts
.25 = 1.78 x 2.9 = -006

If someone has exact sizes for those pellet probe o-rings please post.


 5 
 on: September 08, 2017, 06:48:03 AM 
Started by steveinla - Last post by steveinla
Hi K38 and Rancidtom, thank you for your replies. I will try your suggestions.
R, Steve

 6 
 on: September 07, 2017, 11:20:45 AM 
Started by steveinla - Last post by RANCiDTOM
I have never bothered to write out a spreadsheet as I use my mental spreadsheet and my vernier calipers when my memory fails or I have a springer to "improve" as the fit of the O ring piston seal can be crucial to getting a spring gun to work correctly, I often fit different sizes than those supplied in the "kit of parts" as bought from e-bay or other suppliers. Sometimes it's pure trial and error, sometimes an informed guess before the right size is found.
BSA have used many different O rings across the range mainly imperial sizes but there are a few metric sizes thrown in to confuse the issue. Quite often there is a very near equivalent imp/met O ring that will do the job in PCP guns.
As a general rule the type and grade of O rings you require are Nitrile 70 Shore hardness, sometimes listed as NBR70. Different materials or hardness will usually make for poorer performance apart from in such uses as fill probe BS008 and bottle O rings BS111 where I recommend Nitrile 90 grade (NBR90). Avoid the polyurethane types as these are less resistant to silicone based lubricants than the Nitrile rings.

 7 
 on: September 07, 2017, 09:30:11 AM 
Started by steveinla - Last post by K38
Greetings Fellow BSA Owners!
 I am looking for a chart, or table that lists the different "O" rings used in BSA guns. I have several BSA guns and would like to buy a bunch of "O" rings without having to disassemble them to find out what sizes they take.

I tried using the search feature, but it told me that a search term needed to have at least two characters. Well, the "O" in "O" ring is singular...so what do you do with that? Hmmm.
Thanks!
Steve
  Hi steveinla , Try    bsa oring     There is no organised chart from what can see .Nice idea and a rewording  job for someone to make with a lot of time on there hands..
     Volunteer required..  K38..

 8 
 on: September 07, 2017, 04:04:38 AM 
Started by steveinla - Last post by steveinla
Greetings Fellow BSA Owners!
 I am looking for a chart, or table that lists the different "O" rings used in BSA guns. I have several BSA guns and would like to buy a bunch of "O" rings without having to disassemble them to find out what sizes they take.

I tried using the search feature, but it told me that a search term needed to have at least two characters. Well, the "O" in "O" ring is singular...so what do you do with that? Hmmm.
Thanks!
Steve

 9 
 on: September 05, 2017, 11:47:10 AM 
Started by Cantshoot - Last post by XTX
I am still around and still "in the trade", as mentioned above I am focusing on the eShop and development work for now.

Gone are the days when I could be in the workshop for 14-16 hours a day, 7 days a week, 2 young children have put a stop to that. Maybe once they get older and I get a bit more free time I will start taking on tuning work again.

I am working on releasing more YouTube videos and guides to help you all do your own tuning and to help you find and fix common problems with your rifles. There are also loads of new models of HuMa regulators which I need to fit and play around with to find the best settings for DIY fitters to use, as well as making videos and guides for them. I also plan to develop new parts and accessories for various rifles, which I never had time to do when I was tuning rifles.

Maybe one day I will even get enough free time to visit the forum more often than every 6 months  :hee20hee20hee:

 10 
 on: September 01, 2017, 11:36:15 PM 
Started by jd - Last post by arron yeates
Not sure mate mine was a warraty issue he fixed. Give him anemail

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