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Airsporter mk6 late whatts it worth?

Discussion in 'Vintage collectable airguns' started by Barling Stu, Apr 20, 2014.

  1. Barling Stu

    Barling Stu Active Member

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    Hi ive just refurbed my airsporter, more because i wanted to save it rather than sell, but now its finished i want a new project. Just wanted to know what id get for the old girl. obviously i wont get back what ive put in, ive spent over 30 hours in labour alone. The resto was enjoyable though and ive learned alot about these old guns.
    for some reason i cant upload my photos, but its had a new mainspring,top hat,piston head, i polished the piston while it was stripped, i have completly stripped and refinished the stock aswell. its not the most powerful rifle in the world but its very cosistant at 7 ft/lb. i dont think anyone would use one for hunting anyways, but its ideal for paper punching or plinking and theres not even a hint of spring twang!

    Cheers all.
     
  2. Meteor62

    Meteor62 Major Poster

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    Ah another one that's only managing 7ft lb! As for price prob around the £70 mark?
     
  3. Patrick

    Patrick Donator

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    7 F.P.E,that's very low for an Airsporter in good condition & working properly, should be around the 10 F.P.E,something wrong there.
     
  4. Meteor62

    Meteor62 Major Poster

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    Mine is doing 7 also, I need to look into that this week
     
  5. Barling Stu

    Barling Stu Active Member

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    I took it to the airgun centre to be chronod and he said they werent much more than that new! I think i know the problem though, i bought two mainsprings and shortend one, i removed a coil and a half, but obviously once the coils been flattened and ground its probably more like 2 coils. Ill have to strip her down and put the unshortend one in. when it was chronod the spread was 15 fps over 10 shots! so its very consistant.
     
  6. Patrick

    Patrick Donator

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    They usually chucked out about 700fps in .177 and 550fps.in.22 from the factory and this usually increased a little as the gun was shot and bedded in or was stripped,lubed and fettled.
     
    Last edited: Apr 21, 2014
  7. DUNKS

    DUNKS Big Poster

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    Keep it at 7 and keep it sweet. Can get a bit twangy if pushed too far and no need at all 7 is plenty for plinking.
     
  8. Barling Stu

    Barling Stu Active Member

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    mines averaging 468 fps with h and n ftts, will 2 coils make it loose 80 fps? will it loose its excellent cosistancy with more power?
     
  9. Meteor62

    Meteor62 Major Poster

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    Bit poor for what was once BSA's flagship rifle though
     
  10. darklord

    darklord Can’t beat a tx200 at 30m

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    why do people buy a spring then lop a few coils then fit. pointless most springs should fit straight from the box. I've never had to cut a spring in all the rifles I've tuned!
     
  11. Patrick

    Patrick Donator

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    Quite agree,me too,I've never had to cut down a spring if you're using the proper one recommended for that particular rifle.The only reason I can think of for doing it is to make re-assembly easier but of course you will almost certainly loose power.
     
  12. Barling Stu

    Barling Stu Active Member

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    the reason i cut the spring was because the spring became coil bound when i fitted the top hat, before i fitted the top hat it was only putting out 6.5 ft/lb with an uncut standard spring. have you ever worked on the airsporter before? it has very little room for error, if i try to refit a spring with the top hat it becomes coilbound. i cant seem to find a solution to this issue GRRRRRRRRRR!
     
  13. Barling Stu

    Barling Stu Active Member

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    If anyone knows where i can find an original fit factory standard spring i would be most grateful. it will still probably bind with a top hat though.
     
  14. Barling Stu

    Barling Stu Active Member

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    People on this forum are very quick to criticise rather than offer real advice. Ive spent hours on this gun trying to make it shoot smoother. i stripped it fitted the top hat and it was binding, stripped it removed one coil, flattened the coil, ground it, reassembled, it was binding, removed coil 2 flattened and ground the spring, now its cocking and shooting very consistantly at 7ft lb and people are still posting s*#t about how they have never had any problems when fitting springs! If you are going to criticise at least offer help or an explaination. ive spent hours on this rifle and have done all i can. If you have any useful advice i am willing to listen, but if its unconstructive i dont want to hear it. Rant over.
     
  15. darklord

    darklord Can’t beat a tx200 at 30m

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    Not criticising in particular its a point of fact. Chambers sell a factory spring. "google Airgunspares" The norm now is cut the spring then moan when the powers dropped.

    Ive never found top hats make a huge difference over a small ptfe washer which does the same job which helps the spring rotate in the piston

    theres nothing wrong with combros and I did offer help. you have to weigh every pellet with grain scales to get a true reading as power is as much about weight as it is velocity.

    the formular is

    fpsXfpsXwght (grns)/450240=ftlbs


    If the spring was coil bound with the top hat then remove the top hat first and test. there is no quick way to get the best out of any rifle its a lot of disassembly re assembly test and so on.

    If it was that easy everyone would be tuning rifles all week long. I select what I do and I've always been happy with the results and so have the people I've tuned guns for. But its taken me 30 years of experience to get it right first or second time. very rarely will a rifle go back straight to 11+ ftlbs there either way over or well under.

    And before you start whinging at people cause you screwed your rifle up look at the posts we've put up and thanks theres a wealth of experience here. you've been here for 5 minutes.

    Back to you.
     
  16. Patrick

    Patrick Donator

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    In the 70's & early 80's I owned both a Mecury, Airsporter & Airsporter 'S' the first thing I did when I purchased them was to strip them,a bit of deburring and polishing here and there and a relube.After this they all shot quite smoothly and put out about 9- 10 FPE depending on pellet used.In those days fancy springs, guide tubes and top hats etc weren't widely available.Are you sure the spring is a O.E spring,if it is it sounds as if you may have a problem some where else E.G leaky or incorrectly aligned tap,damaged piston 'O' ring or even unsuitable pellet I.E too tight a fit or too loose a fit.
     
    Last edited: Apr 23, 2014
  17. Meteor62

    Meteor62 Major Poster

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    I'm not so sure the chambers springs are factory replacements. The two I've had from them have been a shiny chrome colour which is new to me.

    If the op feels confident he could go with a tr Robb replacement piston head and do the long stroke model. I bought one but don't have the tools or know how to do the mod. So since replacing the piston head alone as well as a new spring I'm also idling along at 7 fpe compared to 5.5 when I got it. Mine is in .177 so had it been .22 then I would be looking at around 8 fpe . I do intend trying to sort my problem out by trying a different size piston washer as the Robb kits come with three different size ones to suit your rifle. Would be nice if someone that has done the piston stroke mod before was willing to do mine for a fee of course. However airsporters are known for not being powerhouses so unless the mod is done then don't expect too much from it.
     
  18. Barling Stu

    Barling Stu Active Member

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    darklord i wasnt moaning that ive messed my rifle up it shoots well, but if not a bit low on power. your only previous post prior to the last was. why do people lop off a few coils then moan about power. not exactly constructive is it.( yes i would be happier if it were closer to 10). I appreciate that people have experience on this forum but some are more willing to help than others. You have to understand my frustration of spending so much time on this gun, i want it to be perfect.
    Also you were all new to this once. maybe the mainspring i was sent wasnt the right one. sorry for the rant but its frustrating.
     
  19. Barling Stu

    Barling Stu Active Member

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    I dont wish to sell the rifle, but maybe i can use it to hone my skills. i dont want to alienate myself from people either. Thats not the point. this is the first rifle that i have done a complete referb on. i have done a few stocks which have come out really well. I am willing to listen to all advice given.
     
  20. Meteor62

    Meteor62 Major Poster

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    Maybe consider the terry Robb piston stroke mod mate. I'm assuming yours is .22 and it's only doing 7 ft lb. that is drastically low and if the gun shop tells you that's about the norm then I would not be listening to their advice any more I mean the BSA scorpion pistol was capable of that. Like I say mine is also at 7 fpe and that is low even for a .177 9 ft -10 is what I would expect.
     

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