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Thread: Spring guide tightness?

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    Spring guide tightness?

    Hi all,

    Well I left the bash with yet another BSA thanks to the lovely Chris, now he said the Lightning had been tuned by the previous owner, now it shoots nicely with no twang but you can feel the spring grabbing at the metal guide when cocking, when I took the stock off and looked through the cocking slot, you can see the guide is dry as I would think the spring is so tight its just scrapping any grease off, to me that seems too tight.

    Your thoughts please gents.

    Pete
    Far too many rifles to list now, all mainly British but the odd pesky foreigner has snuck in

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    Quote Originally Posted by look no hands View Post
    Hi all,

    Well I left the bash with yet another BSA thanks to the lovely Chris, now he said the Lightning had been tuned by the previous owner, now it shoots nicely with no twang but you can feel the spring grabbing at the metal guide when cocking, when I took the stock off and looked through the cocking slot, you can see the guide is dry as I would think the spring is so tight its just scrapping any grease off, to me that seems too tight.

    Your thoughts please gents.

    Pete
    the spring should loosen on the guide as you cock it.. are you sure that;s what you are feeling ? Or the cocking shoe running over spring coils ?

    I go with a guide that is a firm push fit, maybe even needing a bit of a twist to get it in. Then then under preload, it'll be a good bit looser and when cocked completely free.
    Always looking for any cheap, interesting, knackered "project" guns. Thanks, JB.

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    That's what it feels like Jon but I'm sure the piston has a black plastic grease tube that the spring sits in, so the cocking shoe shouldn't touch the spring in theory.

    Pete
    Far too many rifles to list now, all mainly British but the odd pesky foreigner has snuck in

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    Sounds like the piston sleeve is too tight.

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    Quote Originally Posted by crowbar View Post
    Sounds like the piston sleeve is too tight.
    Might be that as well.

    Pete
    Far too many rifles to list now, all mainly British but the odd pesky foreigner has snuck in

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    If you're guides are good, no need for a sleeve .

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    Quote Originally Posted by NickG View Post
    If you're guides are good, no need for a sleeve .
    BSA put the grease tube in as standard Nick.

    Pete
    Far too many rifles to list now, all mainly British but the odd pesky foreigner has snuck in

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    Need for tightness to kill all vibration varies.
    Setups with a lot of preload, like you ususally find in the Supersport/Lightning often need tighter guides than other guns,
    as the preload opens the spring ID when the gun is assembled.

    As you say, tight guides often gets most of the lubricant scraped off.
    If there is no visible heavy wear marks on your spring/guide, I'd leave it alone, or perhaps smear some high content moly grease between the coils.
    Too many airguns!

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    Quote Originally Posted by evert View Post
    Need for tightness to kill all vibration varies.
    Setups with a lot of preload, like you ususally find in the Supersport/Lightning often need tighter guides than other guns,
    as the preload opens the spring ID when the gun is assembled.

    As you say, tight guides often gets most of the lubricant scraped off.
    If there is no visible heavy wear marks on your spring/guide, I'd leave it alone, or perhaps smear some high content moly grease between the coils.
    It actually shoots quite nice and I know it sounds daft but cocking the gun really spoils the shooting experience.

    Pete
    Far too many rifles to list now, all mainly British but the odd pesky foreigner has snuck in

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    Quote Originally Posted by Shed tuner View Post
    the spring should loosen on the guide as you cock it.. are you sure that;s what you are feeling ? Or the cocking shoe running over spring coils ?

    I go with a guide that is a firm push fit, maybe even needing a bit of a twist to get it in. Then then under preload, it'll be a good bit looser and when cocked completely free.
    Quote Originally Posted by crowbar View Post
    Sounds like the piston sleeve is too tight.
    Quote Originally Posted by NickG View Post
    If you're guides are good, no need for a sleeve .

    Agreed.
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    Quote Originally Posted by look no hands View Post
    BSA put the grease tube in as standard Nick.

    Pete
    And what other little gold nuggets have they come up with in the past?
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    Quote Originally Posted by look no hands View Post
    It actually shoots quite nice and I know it sounds daft but cocking the gun really spoils the shooting experience.

    Pete
    Stupid question: how is the end chamfer on the guide?
    Too many airguns!

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    Quote Originally Posted by evert View Post
    Stupid question: how is the end chamfer on the guide?
    Not really seen it yet, got a few more projects to do before this one gets anymore attention.
    Far too many rifles to list now, all mainly British but the odd pesky foreigner has snuck in

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    Quote Originally Posted by evert View Post
    Stupid question: how is the end chamfer on the guide?
    yeah, good call, that could create notchiness if it's burred or not profiled.
    Always looking for any cheap, interesting, knackered "project" guns. Thanks, JB.

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    Quote Originally Posted by Shed tuner View Post
    yeah, good call, that could create notchiness if it's burred or not profiled.
    I'll see if I can see it through the cocking slot, if not then it will have to be a strip down in the future.

    Pete
    Far too many rifles to list now, all mainly British but the odd pesky foreigner has snuck in

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