Superten adjustment.

[Micky Spillane]

Hi folks it's been a while since I last posted on here and I always seem to be begging for knowledge! I have in my workshop a BSA Superten ( a heavy beast) in .22. The sad little thing is only making 8.5 ft lbs average over a string of 5 shots. I know better than anyone not to ask for a secret formula to take it above legal but somewhere in the 11 ft lb region would be nice. Many thanks in advance.
Mick

[Frosti]

Hi folks it's been a while since I last posted on here and I always seem to be begging for knowledge! I have in my workshop a BSA Superten ( a heavy beast) in .22. The sad little thing is only making 8.5 ft lbs average over a string of 5 shots. I know better than anyone not to ask for a secret formula to take it above legal but somewhere in the 11 ft lb region would be nice. Many thanks in advance.
Mick

The reg will be faulty and need rebuilding or replacing bud either that or the breech seal. You don’t have a power adjuster on the Superten as you do some rifles so you can’t just wind a spring preload adjuster.

[Micky Spillane]

Thanks buddy Huma Air here I come!

[Frosti]

Thanks buddy Huma Air here I come!

That’s what I would do bud, they’re a pain to split the cigar tube so have a look online and I had best results using scope mounts around it to give me some extra purchase.

[joffy]

Thanks buddy Huma Air here I come!

I have one here ready and waiting for me to stick it in my s10 .....looks easy enough

[deejayuu]

Had one on the bench here in very distressed state a few days ago. Working quite well now.
Worth checking muzzle energy around 65/70 bar then 100 and again at 150.
Reg is usually around the low figure so if energy drops off at higher levels it's defective.
Interesting hammer adjustment as found

https://photos.app.goo.gl/aSS36Mf4hMwXQPfUA

[greenwayjames]

The regulator presssure setting on the Superten depends on the calibre and length of barrel. The OP has a .22" and if full length rifle the factory regulator pressure setting for sub 12 ft/lbs was approx 55 bars. BSA used a 16.3 grain BSA Huntsman to set the power. These gave the maximum power at the time even in the springers.

[joffy]

The regulator presssure setting on the Superten depends on the calibre and length of barrel. The OP has a .22" and if full length rifle the factory regulator pressure setting for sub 12 ft/lbs was approx 55 bars. BSA used a 16.3 grain BSA Huntsman to set the power. These gave the maximum power at the time even in the springers.

Sounds good huma sub 12 regs come set at 69 bar so might need turning down a bit .....they say their efficiency is better than the standard reg so might even run at a lower bar setting

[deejayuu]

Well worth, for me, running shots with existing reg. ball removed to get ideal operating pressure for the particular set up.
Then set the reg. at or just above that.

[Micky Spillane]

As always great advice from all, for which I am hugely grateful, Huma Air it is then.

[joffy]

As always great advice from all, for which I am hugely grateful, Huma Air it is then.

Just don't ask them for advice as you'll get an answer that only makes sense after a night of booze and weed

[madcarlos]

That’s what I would do bud, they’re a pain to split the cigar tube so have a look online and I had best results using scope mounts around it to give me some extra purchase.

Done mine with scope mounts aswell, But I put some double sided sticky tape around the scope so the mounts didn't slip, Clamped in a vice and a Sharp tap with a hammer,

[harvey_s]

I have a friend who has had his regulator rebuilt by John Lane, but the power remains stubbornly low.
He is convinced his hammer spring has become weak, but can't find any sources of new ones and he doesn't want to put a second hand one in in case it has the same issue again as I understand they are not that easy to change?
Would anyone have any pointers to sources for new ones please?

[joffy]

I have a friend who has had his regulator rebuilt by John Lane, but the power remains stubbornly low.
He is convinced his hammer spring has become weak, but can't find any sources of new ones and he doesn't want to put a second hand one in in case it has the same issue again as I understand they are not that easy to change?
Would anyone have any pointers to sources for new ones please?

Terry Robb does uprated springs

[muzzle]

I have a friend who has had his regulator rebuilt by John Lane, but the power remains stubbornly low.
He is convinced his hammer spring has become weak, but can't find any sources of new ones and he doesn't want to put a second hand one in in case it has the same issue again as I understand they are not that easy to change?
Would anyone have any pointers to sources for new ones please?

Anti bounce is another possibility being over shimmed or just not functioning as it should. I've had this problem on two