Floppy trigger after lightening pull weight, TX200 mk III

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Riffler
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Joined: Wed May 25, 2016 9:13 pm

Floppy trigger after lightening pull weight, TX200 mk III

Tue May 31, 2016 3:20 pm

Have played a little with pull weight today, slackening pull weight screw A by an eighth then a quarter turn anticlock-wise. Not a great change.
At this point the trigger fired safely, not much lighter but the 2nd stage to release is now floppy an the trigger won't return if you start the firing cycle but decide to stop, i.e. the trigger won't return to the at rest postion.

I haven't touched screws B or C.

Starting to regret tweaking it as it was set up pretty good in the 1st place .

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

Re: Floppy trigger after lightening pull weight, TX200 mk II

Tue May 31, 2016 6:09 pm

the spring may have been compressed with the previous adjustment and collapsed.

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Riffler
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Joined: Wed May 25, 2016 9:13 pm

Re: Floppy trigger after lightening pull weight, TX200 mk II

Tue May 31, 2016 7:00 pm

Maybe.

Except...

Gun bought new Dec 2013 and I was releasing pull weight screw, so reducing tension.

Are these springs prone to collapsing?

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gary martin
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Re: Floppy trigger after lightening pull weight, TX200 mk II

Tue May 31, 2016 8:52 pm

they are not exactly heavy duty, similar to a biro spring. if it has been compressed for a long time it may never recover. why not take it out and inspect, then you could identify or rule out.

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Riffler
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Joined: Wed May 25, 2016 9:13 pm

Re: Floppy trigger after lightening pull weight, TX200 mk II

Wed Jun 01, 2016 6:31 am

They look cheap enough

dumb Q but, to replace the old one
if I fully remove the pull weight screw, will the spring just drop out?

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gary martin
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Re: Floppy trigger after lightening pull weight, TX200 mk II

Wed Jun 01, 2016 11:38 am

Riffler wrote:They look cheap enough

dumb Q but, to replace the old one
if I fully remove the pull weight screw, will the spring just drop out?


that will do it, the screw just places preload on the spring. if you increase the preload, does the trigger remain floppy?

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Riffler
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Joined: Wed May 25, 2016 9:13 pm

Re: Floppy trigger after lightening pull weight, TX200 mk II

Wed Jun 01, 2016 1:40 pm

have increased pull weight and 2nd stage remains floppy

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Riffler
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Joined: Wed May 25, 2016 9:13 pm

Re: Floppy trigger after lightening pull weight, TX200 mk II

Wed Jun 01, 2016 2:54 pm

pull weight spring on order, thanks

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Sake-san
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Re: Floppy trigger after lightening pull weight, TX200 mk II

Wed Jun 01, 2016 6:06 pm

It is not an uncommon problem...
I have a TX HC here at present for sorting out and amongst other issues it exhibits the same symptoms.
If you are up to stripping the trigger unit, then do so. Remove whatever grease / gunge is in it, whilst in there check the mating sear faces for pitting / ridges etc and flat them (whilst not rounding off any edges / angles). Check everything functions OK (sometimes the case symmetry is not true and causes binding of the mechanism) apply a very slight mist of light oil and reassemble.
If you are not up to stripping it then flush with a degreasing aerosol a couple of times, let evaporate then lubricate (conservatively) with a fine aerosol oil.
The CD trigger design is first class, the quality of the engineering sometimes less so. When you add in the necessary factory lube protection (which does not improve with ageing but, is necessary to prevent issues at -30 or +45c in transit or storage) you have a recipe for some potential issues.
I doubt it is the release weight spring in your case but, a binding issue ref the above which shall naturally only be excacerbated by reducing the release weight spring tension.
Having done either of the above I would also reset the 1st & 2nd stages at the same time.
Hope that helps if not then take it to a reputable service agent, a properly functioning trigger is rather important!.
TX200/Gary Cane/Sightron SIII 10-50x60
TX200/Gary Cane/Sightron SIII 10x42
TX200 test / analysis gun

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

Re: Floppy trigger after lightening pull weight, TX200 mk II

Wed Jun 01, 2016 9:20 pm

if the trigger does require a strip down, the guide i used when i did mine is on: airgunhome.com

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