Ailing Airsporter

[piggy589]

Thanks bud,the seal on the metal piston head came out of our air-con. selection box and is a nice sliding fit.

As you suggest it might be an idea to test a range of pellets to find one that fits snugly in the breech plug.

[Hsing-ee]

Thanks bud,the seal on the metal piston head came out of our air-con. selection box and is a nice sliding fit.

As you suggest it might be an idea to test a range of pellets to find one that fits snugly in the breech plug.

Other than the seal, if it is still a problem then there is a chance the tap is misaligned - shoot into some loosley packed cotton wad or something that wont deform the pellets and see if they are going into the bore squarely. Check that the piston rod is straight. GOod luck !

[piggy589]

I made a point of looking through the stripped action from the rear to check the tap alignment.

All appeared to be correct,there again there's nothing to say the tap to action gap isn't allowing air to escape.

From memory this is acknowledged as the Airsporter's achilles heel,a flawed design.

[DAVALI]

Use a dome ended pellet probe to seat the pellet in the bottom of the loading tap, I've found this improves consistency and power on all my tap loaders.

DaveM.

[Chippy65]

Use a dome ended pellet probe to seat the pellet in the bottom of the loading tap, I've found this improves consistency and power on all my tap loaders.

DaveM.

try lubricating the loading tap with thick silicon grease, If it is like my Mark 1 ensure the little spring in the ens of the loading tap is strong and in good condition

[piggy589]

Thanks fellas,in an old post someone suggested using BSA's own Storm pellets, as they raised the power of his old tap loader from 7 to 10ft/lbs.

Presumably a snug fit in the tap and bore .

[Hsing-ee]

Thanks fellas,in an old post someone suggested using BSA's own Storm pellets, as they raised the power of his old tap loader from 7 to 10ft/lbs.

Presumably a snug fit in the tap and bore .

There is no way that a crap pellet should lose you more than three fpe. The Airsporter S should do well over 11 fpe in .177, not 7.5. Just look at the size of the compression cylinder and the spring, my HW30 does 7.5 fpe in .177 and that is a midget compared to the sporter. The bore is the same in .177 as now, it is only the .22s that are slightly over, and even then it is a matter of accuracy rather than power that suffers. Something is seriously out of kilter with it. Try using RWS Superfield and have another look at the piston washer.

[Hsing-ee]

try lubricating the loading tap with thick silicon grease, If it is like my Mark 1 ensure the little spring in the ens of the loading tap is strong and in good condition

Absolutely DO NOT use silicone grease on the tap, it will cause it to gall and then seize solid. Believe me, I know. If you don't, then read this thread all the way through ...


http://www.airgunbbs.com/showthread....silicone+seize

[Big Seth]

try lubricating the loading tap with thick silicon grease, If it is like my Mark 1 ensure the little spring in the ens of the loading tap is strong and in good condition

I had a brilliant Airsporter 'S' till I lubed the tap with silicon grease-three shots later and the tap had siezed solid....gun ruined forever.