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S410 fac xtra power loss - help
Posted: Thu Apr 16, 2015 5:41 pm
by amadablam
Hi all
Recent got a combro from BBF , thanks
Checked power on the rifle this evening and was shocked at how much it had dropped. I had been living in blissful ignorance
It was 21.4 fpe with 18.13 gr jsb jumbo heavy pellets at 729fps.
Any ideas on what I need to do to restore the power?
All help greatly appreciated
?
Re: S410 fac xtra power loss - help
Posted: Thu Apr 16, 2015 10:07 pm
by devonhunter
How old is the rifle?
Re: S410 fac xtra power loss - help
Posted: Thu Apr 16, 2015 10:29 pm
by amadablam
devonhunter wrote:How old is the rifle?
3-4 years old. I think it might need it's seals done.
Re: S410 fac xtra power loss - help
Posted: Fri Apr 17, 2015 5:12 am
by Blackbaronfish
It could be a combination of seals, tired hammer spring and in need of a hammer rail clean.
Get yourself a seal kit from Julian and give it a once over. Whilst you have it stripped you could nip up the grub screw on the adjuster as this will stop the knob moving power too easily.
BBF
Re: S410 fac xtra power loss - help
Posted: Fri Apr 17, 2015 5:15 pm
by amadablam
Blackbaronfish wrote:It could be a combination of seals, tired hammer spring and in need of a hammer rail clean.
Get yourself a seal kit from Julian and give it a once over. Whilst you have it stripped you could nip up the grub screw on the adjuster as this will stop the knob moving power too easily.
BBF
Cheers BBF
I have sent him a pm to purchase the necessary
Time to look on YouTube for some guidance
Re: S410 fac xtra power loss - help
Posted: Sat Apr 18, 2015 3:14 pm
by poguemahone
amadablam wrote:devonhunter wrote:How old is the rifle?
3-4 years old. I think it might need it's seals done.
change the valve
Re: S410 fac xtra power loss - help
Posted: Sat Apr 18, 2015 7:58 pm
by amadablam
poguemahone wrote:amadablam wrote:devonhunter wrote:How old is the rifle?
3-4 years old. I think it might need it's seals done.
change the valve
Thanks poguemahone
The firing valve? Is it easy to change?
Re: S410 fac xtra power loss - help
Posted: Tue Apr 21, 2015 8:36 pm
by amadablam
Anyone know the most straight forward way to get to the hammer? I've never opened up an air rifle before
Re: S410 fac xtra power loss - help
Posted: Tue Apr 21, 2015 8:52 pm
by Blackbaronfish
Cheesy music but it will give you an idea
https://www.youtube.com/watch?v=4Srn78Pz5TABBF
Re: S410 fac xtra power loss - help
Posted: Tue Apr 21, 2015 9:08 pm
by amadablam
Thanks BBF
Im guessing that part where he uses the drill is to do with the anti tamper that we hear about?