LGV - The AGW "Simple tune" doesn't work for me

[T 20]

Just a quick thought, Mike.

Have you checked that the piston bearings and cocking arm aren't giving drag to the piston ?


I think I'd be putting the original spring back in at this point to get an idea of what's exactly going on.

[Vernal]

Just a quick thought, Mike.

Have you checked that the piston bearings and cocking arm aren't giving drag to the piston ?


I think I'd be putting the original spring back in at this point to get an idea of what's exactly going on.

Pretty sure the piston bearing bearing is OK Mick, as the piston now, with Weihrauch seal, pushes along quite easily. Less sure about the cocking arm, which is much harder to check as the stock needs to be replaced to give normal cocking conditions, and is then hard to check. I don't like this system, and I can see that there is some wear along the cocking slot, but if it is a problem why doesn't it show up with the Walther spring and seal in?

[Vernal]

Reading another post on here, it just occurred to me to wonder, is there a different spring for a .22 TX? Could I have bought the wrong one by mistake? The one i have does match the AGW article in terms of outside diameter, wire diameter and number of coils, is there an easy way I can check the spring rate?

[Shed tuner]

Reading another post on here, it just occurred to me to wonder, is there a different spring for a .22 TX? Could I have bought the wrong one by mistake? The one i have does match the AGW article in terms of outside diameter, wire diameter and number of coils, is there an easy way I can check the spring rate?

nah, they are rthe same, just the top hat varies with calibre...

[Vernal]

Thank you, another line gone!

[Shed tuner]

Radical, I know, but if it's shooting nice, you could just leave it alone

(Ok, I'd probably still tickle the port out to 2.9mm - with a reamer, not a twist drill)

[Vernal]

Radical, I know, but if it's shooting nice, you could just leave it alone

(Ok, I'd probably still tickle the port out to 2.9mm - with a reamer, not a twist drill)

That does have some appeal, and it certainly is shooting nicely, and with great accuracy at 25 yards, so could be good for bench rest. I shall probably leave the TP until the next article, unless I come across a 2.9mm reamer next time I go to an autojumble.