Thanks Richard. Our prayers have been answered. I released another video tonight to update the RB2 saga....You should check out the video but suffice to say that she's spittin' 7.9gr Premiers at 800 fps now. Thanks as always my friend.
They are beautiful. Very well built. (Except for that ridiculous scope rail) I don't pay much attention to my hand anymore. It doesn't really bother me at all. It could definitely have been a lot worse. Thanks very much my friend.
This rifle (one of the classics) was carefully designed and built by experts in their field, it doesn't need anyone to change a design that already works perfectly. A true classic air rifle.
Perhaps, but if you were paying attention at the beginning of the video, you would have noticed the EXTREME spring buzz that the rifle was producing at the shot. In my mind, that's like having a "classic" car with a hole in the exhaust. It's not supposed to be that loud, and so a little work can correct the issue without harming or detracting from the car's classic status. Thanks for watching, my friend....
Thanks Thomas. I'm very happy with it now and the low power issue has been corrected. Turns out that there's an adjustment screw that restricts the transfer port built into the rotary breech. I opened up the screw and she's pushing a little better than 10 ft lbs. Thanks for watching.
Hi Kevin, Thankyou for your video, I really enjoyed it. There's no comparison in the difference you made to the noise of this air rifle after you pulled the trigger. Just fantastic! Eventhough I live fairly near to BSA, and like to see them do well, I've never been a fan of the Airsporter. It's just never appealed to me at all, and I think you were lucky if you had one that was accurate. It just does nothing for me. However, that said, you've done a fantastic tune there and a great example of someone demonstrating knowing exactly what they're doing and improving something no end. Very well done, great respect my friend.
Kevin that was a superb tune on a beautiful rifle. I certainly learned a thing or two. The sound at the end! My first rifle was a BSA Meteor but it didnt sound as good as your Stutzen. Just subscribed. Looking forward to more great videos. Thanks from the UK.
Hi Kevin, that's a fine looking rifle, great piece of timber on it. Always liked the Stutzen style of rifles but kind of rare on air rifles, haven't seen to many of them out there over the years. As always love the videos.
Thanks Graham. I've always loved the Stutzen stocked rifles. I've been wanting one of these since they were introduced in the eighties. Now I have two, a Mk1 and the RB2. I'll be tearing into the Mk1 at some point too so keep an eye out for the vid....
That's alot better but as you say a bit disappointing on the power, it will definitely be the rotary breach no question my rb2 was running the uk legal limit of 12ftlbs with ease.
Hi Kevin! The old 22:s BSA are very sensitive to choice of pellets. I have 3 and have found out that the rb2:s runs best with FX or JSB rs. Both airsporter and Supersport. Groups around 1 inch, 45 yards. I really enjoy your videos, thanks!
That took me back to working on my RB carbine, puzzed as to what piston seal you had on it though, mine was black bsa standard, i had a spare but didn't fit it as the original was perfect, good camerawork kevin, i could almost smell that ether when you were flushing out the cylinder, I use dry slide to coat the insides now i've finally managed to get some again, it's been like rocking horse poop to find here for many years. Still have spare mainspring to fit too bsa if you were closer i'd have given you to try in it.
The power plant on these rifles was closely based on BSA's Supersport and Superstar rifles, so some of the tuning methods are common to all. A British £1 coin placed inside the piston as a piston weight was a common way to up the power a bit, this wouldn't work on the airsporter because of the piston rod (which in itself, adds weight to the piston) though your rifle was going coilbound when you removed the top hat, it may be worth removing a couple of coils from the spring to allow the weight to be used. The transfer port on UK spec guns was considered to be too large, some tuners inserted a brass tube to reduce the volume of air in the transfer port, I don't know what the German spec breeches were like but I've never seen any rotary breeches here in the UK with the restrictor fitted. The Supersport export was good for about 16 ft/lbs, the Superstar I had managed 12.8 with an old, tired spring and needed cutting down to get it within our power limits, they were capable of a lot more, so you should be able to get nearer 12 ft/lbs with the Airsporter. And that Maxi-grip scope rail is a real pain! I'd advise fitting it as soon as you have the piston on, some use clamps to compress the rail against the cylinder, those ones with the nylon pads are good, and a little chamfering on the leading edges of the keys and key slots helps get them in too.
Hi Rob. Thank you for your informative comment. I ended up doing a follow-up video to explain what I found. Several viewers mentioned a throttle screw located in the breech block. I tore it down again and sure enough, there it was. I opened it up all of the way and the rifle is producing a little over 10 ft lbs now and I'm satisfied with that. The scope rail key hole system is a nightmare to disassemble and would've been even worse to reassemble had I had the original foam rubber strips to mount beneath it. The 3M tape that I ended up using was a few thousandths of an inch thinner so reassembly wasn't so bad. Thanks so much for watching my friend
@@razor1962 Yes, I read those comments, the wealth of information out there is amazing, and the restriction screw was mentioned on an airgun forum thread concerned with tuning the Airsporter RB2, I can't remember if the consensus was they were early or late rifles, though your rifle appears to have a safety and an additional lever in the trigger block, I've not seen that before, is it just a safety catch or anti-beartrap lever?
@Rob Pollock It's got a safety system but no anti-beartrap. Agreed, the internet has made information available to us at lightning speed. My viewers have helped me out more than once.
🤣 Yeah, I guess I was on the right track. So pleased with how it turned out after backing out the throttle screw. Smooth, fast and solid now. Shoots as good as it looks.
Hi p&p if you can get the rotary breech out and that has the transfer port inside why dont you drill it out to a larger size or drill out and tap then make different brass transfer ports to screw in if that is possible it could solve your problem then you could adjust the power to suit lovely gun sounds great all the best fred.ps have a great xmas .
Hi Fred. Actually I did a follow-up video on the RB2 in which I share what I learned and how I solved the power issue.ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-DdiUKlz14jQ.html Thanks so much for watching my friend.
As far as stuck things go, buy a 5-gallon plastic bucket with a tight lid. Also a gallon of WD-40. Put whatever in the liquid and set it away for a week. Take a pistol or revolver, and it will about fall apart in your hands.
i have a german rws mod 50 carbine which was set at 6ft lbs and it had a 4mm transfer port so i reduced it to 2mm and she now gives 8 ft lbs same spring set up and everything.
@@razor1962 well kevin it may be wise to ask the bsa airsporter experts on the forums what size their 12 ftlbs transfer ports are. having a large transfer port looses swept volume and tap loaders loose swept volume because of their design . i would imagine a 12 flt lbs in .177 will be a different size to the .22 ? my bsa lighting in 177 has approx a 2mm transfer port which is why i reduced the 4mm in my mod 50 i just jb welded a reducer in. from what i gather transfer ports are a bit of a dark art but i suppose a transfer anywhere between 2-2.5mm should improve power . it the pellet needs pressure think of it like a water hose when you put your thumb over the end it creates more back-pressure and fires the water further under pressure i think air works on the same basic principle but i'm no scientist.
@@wichywoo Makes sense when you think about it. I guess I just never gave it much thought. The trick is, I would imagine, knowing how much back pressure is too much. Trial and error I suppose. Each design will most likely be different from the next.
@@razor1962 correct there's a fine balance between pressure and getting a smooth shot cycle because its no good just having power if you cannot hit a barn door because of a rough shot cycle recoil , piston slam etc . there's a lot of different factors at play and every gun is different so there's no one size fits all . its nice to see you got it sorted out with a grub-screw did you have to reduce the the transfer port by screwing it in ? you did n excellent job by the way . I've got a vintage bsa superten mk 2 pcp i'm currently working on. those are nice rifles .
Opened up the transfer port. It was crowded out pretty well with the grub screw. Gun shoots beautifully now. Nice fast locktime and smooth, firm recoil. No vibration. Not harsh at all. Thanks for the kind words my friend .
Actually the problem turned out to be a lot more simple than that. There's no abrasive damage to the piston seal. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-DdiUKlz14jQ.html
@@razor1962 Well, here in Germany the pentagon with the F has a comparable symbolic power. You have noticed yourself that it is quite difficult to elicit a decent muzzle velocity from this type of air rifle. Certainly the configuration of a real pentagram is different. Greetings back my friend!
Thanks so much. Yes, it was pointed out to me that there was a throttle screw and it did solve my issue. Thanks for your comment and thanks for watching my friend.
