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Thread: BSA Lightning XL .22 Tuning

  1. #1
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    BSA Lightning XL .22 Tuning

    I've recently acquired a .22 Lightning XL as a cheapo entry back into air gunning and a stop gap until I get my FAC sorted. I've had one before several years ago, and it's was OK, if a bit twangy compared to my prized TX200HC. I know they have their faults etc, but the price was right.

    Anyway, it's just a stop gap and I can't resist having a bit of a play with it to try and make it a bit smoother for a bit of time and effort.

    At this point I'm collecting info - I can machine my own top hat, guide and piston weight as I have a lathe in my workshop - any advice?

    What are the experiences of the Titan or OX Accelerator mainsprings?

    I was going to use some 0.5mm PTFE sheet for a spring sleeve to take a bit of the rattle out.

    Anyone have a diagram of the trigger and advice on tuning that?

    Will post up experiences as I go... but any advice will be well received.

  2. #2
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    I replaced the spring with a Titan one, the original broke, the spring guide has a couple of layers of heat shrink tubing on it for a snug fit - the BSA supplied one is plastic, I don't think it's up to much. There was a piston sleeve fitted from new, it's basically a black plastic piston liner, polypropylene maybe.
    The trigger has the contact points on the sears polished which did help a lot, it's a bit loose in there so I've shimmed the trigger & disabled the ersatz first stage by fixing the trigger rigidly to the sear. It's definitely not a Record but it's a lot better than it was.
    The barrel had a choke at the breech, apparently there was a bad batch, I replace it with a Mercury one. The original was grouping about 3" at 20M with flyers all over the shop, now it's happily getting 20mm groups at the same range. And it's technically a Supersport now I've fitted the longer barrel.
    You've got hours of fun ahead of you.

  3. #3
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    I can't copy the tigger info from my post, I'm on a stupid iPad!

    Apparently people used a gold star trigger.

    http://www.airgunbbs.com/showthread....-bsa-lighting)

  4. #4
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    Thanks for info guys.

    Gun is an English made one from what I can tell by the serial number. I'll start having a play around with it in the next few weeks and see what I can do with it

  5. #5
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    If you keep a record of what you've done and what worked or didn't work and then post it up on here then at least I'll have an idea of what to do or not do when I eventually get round to doing my XLT... ...
    .22 TXhc/Hawke Vantage 3-9x40 AO/MD...
    .22 BSA Lightning XLT...
    .22 Webley Xocet complete with iron sights...

  6. #6
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    How far would you want to go with it. It's endless, I can't go any further with mine as I haven't a lathe! :/

    Before I took any measurements I thought the Supersport was a large cylinder/ long stroke gun like the 80! It's not, it's more of a short stroked 80 or very similar to a hw35 (as bore and stroke are very similar)

    I've a bunch of thing to try for mine, but it would be interesting to see where some one else would go.
    (A basic strip and tune, barrel pivot pin replaced with bolt, barrel sorted or exchanged, weihrauch type seal, o rings, lightend piston, if o ring or different (hw) seal is used - a shorter length piston would be required, this is just a few. I've worked out the SCR for some of them)

    Good luck!!


    These might give you a few ideas. Trigger one looks handy.

    Tune

    Spring gun tuning thread
    http://www.airgunbbs.com/showthread....ing-Gun-Tuning


    Trigger

    http://www.airgunbbs.com/showthread....upersport+tune

    http://www.airgunbbs.com/showthread....ing-XL-trigger

    http://www.airgunbbs.com/showthread....ger-adjustment

    http://www.airgunbbs.com/showthread....ger-improvment


    Anyone tuned a Supersport

    http://www.airgunbbs.com/showthread....upersport+tune

    More reading....not sure how much you know but I thought these might give an insight or reminder of certain things

    Sleeving
    http://www.airgunbbs.com/showthread....-piston-weight

    Spring length
    http://www.airgunbbs.com/showthread....th-And-Spacing

    Piston weight
    http://www.airgunbbs.com/showthread....-Piston-Weight

    Measuring spring stiffness
    http://www.airgunbbs.com/showthread....ring-stiffness

    Static compression ratio
    http://www.airgunbbs.com/showthread....pression-ratio

    35 lgv
    http://www.airgunbbs.com/showthread....ding-a-HW35LGV

    Full power meteor
    http://www.airgunbbs.com/showthread....wer-BSA-meteor

    Short stroking
    http://www.airgunbbs.com/showthread....troke-fiddling
    http://www.airgunbbs.com/showthread....ng-vs-sleeving

    Hw80 short stroke
    http://www.airgunbbs.com/showthread....he-HW80-my-way
    http://www.airgunbbs.com/showthread....roke-Reduction
    http://www.airgunbbs.com/showthread....-HW-80-30mm-ss
    http://www.airgunbbs.com/showthread....ed-HW80-piston

    BSA superstar tune
    http://www.airgunbbs.com/showthread....ght-stroke-etc

    B2 tune, (ratios etc)
    http://www.airgunbbs.com/showthread....ng-a-Chinky!-)

  7. #7
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    Quote Originally Posted by TORNADOS7 View Post
    If you keep a record of what you've done and what worked or didn't work and then post it up on here then at least I'll have an idea of what to do or not do when I eventually get round to doing my XLT... ...
    This goes for me too. It'll save me doing any thing
    Good luck

  8. #8
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    Great, thanks for all the info.

    I stripped it out of it's stock tonight for a quick clean and check over. Was a little grubby, but looks to have had very little use indeed. Looks like it has an aftermarket moderator on it, but it doesn't really bother me much, this is one to have a play with....

    http://i5.photobucket.com/albums/y19...psckisqz6b.jpg

    http://i5.photobucket.com/albums/y19...psm7f6v0gv.jpg

    http://i5.photobucket.com/albums/y19...pswvjqqoiy.jpg
    The girl your parents warned you about....

  9. #9
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    OK, finally got around to stripping this down properly for a good look.

    The rifle is the older Birmingham made one with the metal trigger.

    Fashioned a spring compressor from a piece of dowel and knocked the maxi-grip rail off with a hammer and bit of wood. Wasn't as bad as I expected.

    Full of sticky, horrible grease which was all thoroughly cleaned out with degreaser. Imagine my surprise to find a plastic piston/spring sleeve in place from the factory and a plastic rear spring guide as standard.

    Cleaned it all up and polished the piston where it contacts the bore of the chamber as its was extremely rough in places. Also took all the sharp edges off everything while I was in there. A light coating of moly grease in the appropriate places and for now I've popped it back together again before I consider my next step in giving it a proper tune up.

    https://photos.app.goo.gl/kLoX2CXz6hGsewQ32
    The girl your parents warned you about....

  10. #10
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    Whats it shooting like now then?

  11. #11
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    Quote Originally Posted by gingerbrother View Post
    Whats it shooting like now then?
    Well it's a damn sight quieter than it was before. I need to put a few more pellets through it and zero the scope. Tomorrows fun and games...
    The girl your parents warned you about....

  12. #12
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    I would leave it at that, but if you want to go further just make a top hat and slip washer. As there's no latch rod its important to get the flange the correct fit in the piston with no lateral movement. Make it a twist fit into the spring and be sure to check the top hat and guides combined length to the pistons internal length and shorten the rear guide as necessary.
    Cogito ergo sum rectum!

  13. #13
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    Sounds like you are both capable and having fun there, sir.

    And plenty of good advice up above.

    If you were to replace the spring at some point, I'd be avoiding the Ox.
    THE BOINGER BASH AT QUIGLEY HOLLOW. DELIVERING BOINGINGLY GREAT MEMORIES SINCE 15th JUNE, 2013.
    NEXT EVENT :- SEPT. 2/3, 2017. BOING!!

  14. #14
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    Quote Originally Posted by tinbum View Post
    I would leave it at that, but if you want to go further just make a top hat and slip washer. As there's no latch rod its important to get the flange the correct fit in the piston with no lateral movement. Make it a twist fit into the spring and be sure to check the top hat and guides combined length to the pistons internal length and shorten the rear guide as necessary.
    Thanks for the advice, appreciated

    Quote Originally Posted by TonyL View Post
    Sounds like you are both capable and having fun there, miss.

    And plenty of good advice up above.

    If you were to replace the spring at some point, I'd be avoiding the Ox.
    FTFY

    I'm not planning to change the spring. I'm not sure I've ever heard much good about the Ox springs....
    The girl your parents warned you about....

  15. #15
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    Quote Originally Posted by gothicsera View Post


    FTFY

    I'm not planning to change the spring. I'm not sure I've ever heard much good about the Ox springs....
    Oops! Sorry! (Crawls back under the rock from whence he came!).

    As way of compensation for my unruly clumsiness, I feel I owe you an invite to the bestest, most fun, most boingy airgun happening on the planet.....The Boinger Bash.

    Go on, you'd love it.
    THE BOINGER BASH AT QUIGLEY HOLLOW. DELIVERING BOINGINGLY GREAT MEMORIES SINCE 15th JUNE, 2013.
    NEXT EVENT :- SEPT. 2/3, 2017. BOING!!

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