AA S200 Bells & Whistles - Poor Results

[rabbitslayer]

As for air consumption - you may need to tweak hammer spring and perhaps hammer opening.

What is hammer opening and how do you adjust / alter?

Thanks

[bezzer]

What is hammer opening and how do you adjust / alter?

Thanks

dunno but the adjustments you make to the firing valve spring tension together with the strength of the hammer spring affects the opening of the firing valve. slacker the firing valve the more/easier it will open and let more air in, tightening it and using a stronger/shorter hammer spring means less air- more shots, but it can take a lot of testing to get the right balance. Don't know about the reg not "breathing" I've only fitted Lane ones that need a breather hole drilling take it the Huma one doesn't and is a sealed system?

[rabbitslayer]

Don't know about the reg not "breathing" I've only fitted Lane ones that need a breather hole drilling take it the Huma one doesn't and is a sealed system?

It's not a sealed system. It needs to breath but instead of drilling a hole, you remove the 'o' ring from the brass end plug (on the S200 cylinder) before you refit it and don't tighten the end plug totally shut. You leave a small gap, about the thickness of a sheet of paper.

dunno but the adjustments you make to the firing valve spring tension together with the strength of the hammer spring affects the opening of the firing valve. it can take a lot of testing to get the right balance.

Hmm... that means having to empty the air tube each time I need to alter the firing valve spring.. Ah well. I'll start with the hammer spring and see how far I can back it off and what the outcome is before touching the valve gate spring again.

[imorik]

Did same to a 200 but using Altaros reg. Got similar results to you too but with the odd very high power shot. Had weeks of trying to balance it by adjusting reg, hammer spring tension and power adjusting screw. Have you had the hammer and spring out and cleamed it and removed any roughness, makes a difference to consistency. Had enough after many stripdowns and sold it (was better but still not sorted) being left dissallusioned with regs and pcp's and went back to springers.

[rabbitslayer]

Did same to a 200 but using Altaros reg. Got similar results to you too but with the odd very high power shot. Had weeks of trying to balance it by adjusting reg, hammer spring tension and power adjusting screw. Have you had the hammer and spring out and cleamed it and removed any roughness, makes a difference to consistency. Had enough after many stripdowns and sold it (was better but still not sorted) being left dissallusioned with regs and pcp's and went back to springers.

I can understand your frustration. Thing is it's something that can be sorted as there are lots of regulated rifles that perform correctly. The only problem in this case is me and my lack of knowledge.

Although it now makes sense to me (because of helpful bbs members), it would have been helpful if the suppliers mentioned that there'd be a need to rebalance the hammer, firing springs setup for simpletons like me.

[bezzer]

Hmm... that means having to empty the air tube each time I need to alter the firing valve spring.. Ah well. I'll start with the hammer spring and see how far I can back it off and what the outcome is before touching the valve gate spring again.

It's a pain having to empty and refill each time but if you put a piece of brush handle or similar in the reservoir at least you won't be using/wasting as much air each time you alter it. I used a piece of nylon bar in mine.

[ChrisC]

There are those on here that know a lot more about this than me and it is a long time since i went into a s200. my thoughts are that normally with a 180 bar fill that pressure is being overcome by a strong firing valve spring sealing the firing valve, now the reg is there and the pressure delivered to the firing valve is 95 bar then the firing valve spring is too strong and the hammer spring is working too hard to overcome that tension. When i set up a Steyr it's about the balance of reg pressure vs firing valve spring vs hammer spring, i think that's your problem. see if you can find a 'softer' hammer spring or contact the reg supplier as he must have had this question before?

[rabbitslayer]

There are those on here that know a lot more about this than me and it is a long time since i went into a s200. my thoughts are that normally with a 180 bar fill that pressure is being overcome by a strong firing valve spring sealing the firing valve, now the reg is there and the pressure delivered to the firing valve is 95 bar then the firing valve spring is too strong and the hammer spring is working too hard to overcome that tension. When i set up a Steyr it's about the balance of reg pressure vs firing valve spring vs hammer spring, i think that's your problem. see if you can find a 'softer' hammer spring or contact the reg supplier as he must have had this question before?

Thanks ChrisC.

I understand the aim here now. The trick however must be knowing how to interpret results in relation to adjustments made and thats where my inexperience lets me down.

Wouldn't it be possible for suppliers to offer balanced firing valve and hammer springs matched to the pressure setting of the regulator they sell? Would be too easy I suppose

[GB2017]

on a slight cautionary tangent, have you tried chrono'ing with another pellet?

reason I ask, is that from my understanding of some previous threads superfields can measure low on a chrono, meaning that if you try with jsb's and their ilk you will measure substantially over, you might decide to wind the power down a tad

[ChrisC]

Thanks ChrisC.

I understand the aim here now. The trick however must be knowing how to interpret results in relation to adjustments made and thats where my inexperience lets me down.

Wouldn't it be possible for suppliers to offer balanced firing valve and hammer springs matched to the pressure setting of the regulator they sell? Would be too easy I suppose

Yes mate, you'd have thought that the reg supplier (if they had been contacted about this before) would have put together a small kit to make it an easy, DIY job. I mean, they must have experimented with the settings before making a product to sell?

To revert back to Steyrs. The newer models had an external power adjuster that meant an allen key could be used to push the power above the limit. Steyr in thier wisdom introduced a transfer port with a reduced diameter. the problem was that the shot count almost halved with the (silver) port fitted and the firing valve spring,reg and hammer spring were out of balance. The hammer spring had to be wound right in to get the power to a useable level which meant that the hammer smashed into the friing valve which in turn bounced. The result was a much lower shot count, harsher firing cycle and a vastly reduced life for the internals.....not a clever solution.

I suspect that you've got something similar going on but i also think it should be an easy enough fix......someone on here (or the reg supplier) will have just the info you need....hopefully.

[bezzer]

Wouldn't it be possible for suppliers to offer balanced firing valve and hammer springs matched to the pressure setting of the regulator they sell? Would be too easy I suppose

Only problem is every gun even the same model can be slightly different. 400-500 users have it easier as if you're prepared to pay his price TR Robb sells a set a different hammer springs for them that you can experiment with. I managed to get set cheap off here a while ago which helped a lot but I did make some lighter, longer stroke hammers and different thickness spring preload spacers as well to mix and match until I got the optimum set-up. You could do worse than by checking Rob Lane's regulator YouTube videos there's one for every circumstance/problem. Not specific to the 200 but the principles are the same for every make of reg.

[rabbitslayer]

It's a pain having to empty and refill each time but if you put a piece of brush handle or similar in the reservoir at least you won't be using/wasting as much air each time you alter it. I used a piece of nylon bar in mine.

That's a good idea. Didn't think of that at all... Thanks