TX200 HC power reduction?

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Bosun
Posts: 105
Joined: Sat Feb 28, 2015 1:06 pm

TX200 HC power reduction?

Tue May 31, 2016 12:41 pm

My TX200 HC is getting a little too near the legal limit for my liking at 11.72ftlb.

OK, simple enough I though, just remove some pre-load. The trouble is, there are no pre-load washers. What would be the effect of reducing the length of the piston weight? I know that reducing the spring length is another option, but I'm not too confident at doing it.

On the subject of the piston weight. Why is it a separate piece? Why isn't the additional weight part of the piston?
Air Arms ProSport 0.177 Walnut, MTC Mamba Lite 3-12x44
Air Arms TX200 HC 0.177 Walnut, MTC Mamba Lite 3-12x44
Weihrauch HW75 Pistol
Umarex Colt M1911A1 pellet Pistol
Umarex Beretta 92FS pellet Pistol
Swiss Arms P1911 BB Pistol

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gary martin
Posts: 815
Joined: Thu Feb 19, 2015 8:21 pm

Re: TX200 HC power reduction?

Tue May 31, 2016 6:03 pm

reduced power, less preload placed on spring and reduced piston weight. a drastic action to take. i am guessing that a replacement spring has been used, and not shortened. is it close to the limit, or even a little warm? or just want a reduction in power?
piston weight, can be tuned to different spring, transfer port dimensions etc. if part of piston, requires machining.

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Bosun
Posts: 105
Joined: Sat Feb 28, 2015 1:06 pm

Re: TX200 HC power reduction?

Wed Jun 01, 2016 6:37 am

Hi Gary,

The spring is what came in the rifle from new (with polished ends), and as stated above, muzzle energy is 11.72ftlb with 8.4 grain AA pellets.
Air Arms ProSport 0.177 Walnut, MTC Mamba Lite 3-12x44
Air Arms TX200 HC 0.177 Walnut, MTC Mamba Lite 3-12x44
Weihrauch HW75 Pistol
Umarex Colt M1911A1 pellet Pistol
Umarex Beretta 92FS pellet Pistol
Swiss Arms P1911 BB Pistol

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gary martin
Posts: 815
Joined: Thu Feb 19, 2015 8:21 pm

Re: TX200 HC power reduction?

Wed Jun 01, 2016 11:36 am

as std, you could have anything up to five preload washers, may be yours is very efficient. if you are concerned, contact Air Arms, i don't think that they would send a rifle so close to the limit, but they can help.

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Blackbaronfish
Posts: 3690
Joined: Sun Feb 15, 2015 6:20 pm
Location: Nuneaton

Re: TX200 HC power reduction?

Wed Jun 01, 2016 12:37 pm

Collapse a coil :idea:

BBF
Did I mention that I'm the only one to have attended EVERY meet since we started

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Bosun
Posts: 105
Joined: Sat Feb 28, 2015 1:06 pm

Re: TX200 HC power reduction?

Wed Jun 01, 2016 4:29 pm

Blackbaronfish wrote:Collapse a coil :idea:

BBF


Yes, I considered that, but I'm not confident that I wouldn't end up cocking it up. There seem to be several thoughts on how to do it.
Air Arms ProSport 0.177 Walnut, MTC Mamba Lite 3-12x44
Air Arms TX200 HC 0.177 Walnut, MTC Mamba Lite 3-12x44
Weihrauch HW75 Pistol
Umarex Colt M1911A1 pellet Pistol
Umarex Beretta 92FS pellet Pistol
Swiss Arms P1911 BB Pistol

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gary martin
Posts: 815
Joined: Thu Feb 19, 2015 8:21 pm

Re: TX200 HC power reduction?

Wed Jun 01, 2016 5:05 pm

heat it up, use the spring guide to keep it straight.

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Blackbaronfish
Posts: 3690
Joined: Sun Feb 15, 2015 6:20 pm
Location: Nuneaton

Re: TX200 HC power reduction?

Wed Jun 01, 2016 7:43 pm

Did I mention that I'm the only one to have attended EVERY meet since we started

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Blackbaronfish
Posts: 3690
Joined: Sun Feb 15, 2015 6:20 pm
Location: Nuneaton

Re: TX200 HC power reduction?

Wed Jun 01, 2016 7:47 pm

And this is how Davy does it.
https://www.youtube.com/watch?v=Dk2Sw1m3kCw

BBF
Did I mention that I'm the only one to have attended EVERY meet since we started

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Sake-san
Posts: 551
Joined: Mon May 18, 2015 7:28 pm

Re: TX200 HC power reduction?

Wed Jun 01, 2016 7:53 pm

It really is very straightforward but, if you are still concerned (and I understand that) try just leaving it cocked for a few days, just remember it is cocked when you come back to it!.
TX200/Gary Cane/Sightron SIII 10-50x60
TX200/Gary Cane/Sightron SIII 10x42
TX200 test / analysis gun

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