Turning a 10J T-12 into a "full power" T-12

[Solo tuning]

in the uk you will need fac to own this moded t12 however if you must you can drill through
the side wall to the air transfer port and have a power adjuster screw.screw in for less power
and out for more.
if like me your son is using it and you want to bring standard uk power down the only mod
you need to do is the side wall to tranfer port mod( see original air arms s200 with same idea as standard)

Mmmm, I like your thinking! I had the uprated hammer spring in my .22 and the extra power needed to cock it made me get some titanium and make a new bolt for fear of snappin the brass one's thread off!!! I ended up removing the spring for a factory one and the power is still bang on 28lb???? The hammer weight and transfer port mods seem to do the trick alone?? I ended up turning the barrel so the transfer port is partially blocked off and removing the weight to drop my power to 11.5 lb. a simple twist would effectively be all that is needed to make it go over again though. I think i'll be having a go at fitting an adjustment screw through the side. Sounds a good idea to ensure i keep on the right side of the law

PAUL

[Dhaur]

Two questions:
What would happen if I drilled out all the holes and did NOT change the hammer spring?
Where can I buy the "full power" hammer spring?

And btw, what does the hammer spring actually DO?

[sFinn]

The "old" hammer spring can only deliver 220-240mps, something like that anyway. The full power one can be purchased from Hurricane.

[Dhaur]

So if I would drill all the wholes and NOT change the hammer spring, would it damage the gun in any way?

[sFinn]

Not at all.

[basajaun]

And how can I put it at 15J. I have to drill the transference port at.....?.

Thanks.

[toytown]

hi guys,

ive been reading through the tuning guide you posted wolf and it looks like the sort of thing i could do myself without breaking something

only questions are, is the T-12 the same rifle as the Logun Solo and also where can i get the spring kit from. i had a look on the Hurricane sit but its in Swedish and although i read a little Norwegian both me and my computer had a little trouble translating it. is it the 'Jap Kit' im looking for

thanx

[drlecter]

I bought last version o Typhoon in swedish limit and..
In block exist hole 4mm and barell have two holes. One 1.5mm directed to transferport and another one 4mm in oposite side ( 180° to the smaller ).
IT means, I need just rotate barell with hole 4mm to transferport side for full power?