Tuning RAW HM1000X .25 UPGRADATIONS PART 2 YOUTUBE VIDEO

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Hey mubhaur I was thinking you could use a plastic encased hammer like they made for the marauders in the day it would cut down on the friction and the weight of the hammer they used a brass insert in plastic I don't remember if it was derlin or what but it worked well in the marauders and could also work well in the raw I would still use a metal striker but encase it in plastic to lighten and for less friction just a thought
 
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Hey Mubhaur,

After watching the video again, the only question I have is "what holds the o-ring in place (sealing the poppet stem) on your version vs. the FX?" I know it's contained/held by the upgraded valve plug's recessed end, but what keeps it from moving rearward on the stem closer the the valve body?

On the "FX open valve", the valve's spring guide and return spring and are located (before) the stem's o-ring with its compression holding everything in place.

On your "RAW open valve", the guide and valve spring are located (after) the stem's o-ring and there's nothing holding it from moving up the valve stem towards the valve body? 

I know the valve stem doesn't move forward much after the hammer strike, opening the valve, but this seems like the o-ring could move off its base (and leak).

You have made this change vs. the FX so that the valve spring can be replaced ...

Maybe this is a non-issue or I'm not understanding something?
 
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Hey Mubhaur,

After watching the video again, the only question I have is "what holds the o-ring in place (sealing the poppet stem) on your version vs. the FX?" I know it's contained/held by the upgraded valve plug's recessed end, but what keeps it from moving rearward on the stem closer the the valve body?

On the "FX open valve", the valve's spring guide and return spring and are located (before) the stem's o-ring with its compression holding everything in place.

On your "RAW open valve", the guide and valve spring are located (after) the stem's o-ring and there's nothing holding it from moving up the valve stem towards the valve body? 

I know the valve stem doesn't move forward much after the hammer strike, opening the valve, but this seems like the o-ring could move off its base (and leak).

You have made this change vs. the FX so that the valve spring can be replaced ...

Maybe this is a non-issue or I'm not understanding something?
Click to expand...

The O ring in my system is held in a groove made for O ring keeping in place. Do no issue of moving of O ring.

20211010_140614.1634616259.jpg
20211010_140646.1634616260.jpg


Just see the front part of the stem of valve. There is a step in it. And there is a collar guide that sits on that step of the front of valve pin. Then comes the valve spring. Now the valve spring puts pressure on the guide and guide keeps resting on the pin collar. This keeps the required pressure on the valve and this allows me to make the spring adjustable and replaceable. 

I hope you understand now.

Bhaur 
 
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Yeah Mubhaur,

I couldn't see and didn't hear .... that the stem sealing o-ring was already inside the main body - slipped into a wall cut out (groove). 

Thanks ... how is that groove cut?
Click to expand...

My machinist is a wonderfully skilled person. He does all this on an ordinary laith machine.

Initially I thought he charges too much but when I saw the number of hours consumed and perfection of work, its worth it.

I have sent plenum to Airgunmann. He can show you the built quality of the plenum. 

I need to improve all this system of my RAW that I have shown in video. You know every new product may have some teething issues and is refined in the second phase.

So I am trying to further improve the system. 

Just as I mentioned in video that this set up is still in R&D phase.

Bhaur 
 
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Thanks Mubhaur,

Keep pushing ahead on the RAW ...

I can see from the pics, your machinist's work is First Class !!! - no need to see actual parts.

I don't have the need for an additional plenum with my shooting. However, the open ended valve is something I may try. My $500 Harbor Freight lathe my not be up to the task of making the threaded w/o-ring - Main Body part.
 
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Hey Mubhaur,

Any updates regarding your hammer weight and spring tension findings?
Click to expand...

Not yet.

In fact the machinist is too busy. 

I have to refine the previously developed adjustable valve system a bit.

The machinist doesn't have time enough to refine that system either.

So I have to wait for the refinement of the system and once I shall be completely satisfied with refined system, then I shall move forward for making lighter weight for further testing.

In fact I want to include a guide inside the system that will keep the long valve stem well aligned. 

Further a different O ring size shall be tried for sealing.

So as you know that R&D is normally the most time consuming thing, I have to bear it whatever be the final results. 

Bhaur
 
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I have done an other effort to become 100% successful. I have a lighter weight hammer now. 

But after all my testing I find that the adjustable valve spring system has some bottleneck that sometimes gives inconsistency. 

I cannot accept this inconsistency. 

Finally I have changed my mind and I am thinking of installing the valve spring inside the block again like fx royale series guns. 

I am already getting the benefits of opening the valve stem in atmosphere. 

Now the next effort is to make another setup in which valve spring with neither be adjustable nor replaceable without disturbing the gun. But the valve travel will be adjustable externally. 

I understand that this system will address the bottleneck of previous system successfully. 

Just to update all the friends. 

Bhaur 
 
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I have done an other effort to become 100% successful. I have a lighter weight hammer now. 

But after all my testing I find that the adjustable valve spring system has some bottleneck that sometimes gives inconsistency. 

I cannot accept this inconsistency. 

Bhaur
Click to expand...

Bhaur,

Do you know which part is creating the bottleneck? Try to describe how this issue is occurring and why the change will fix it?

Kirk
 
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I have done an other effort to become 100% successful. I have a lighter weight hammer now. 

But after all my testing I find that the adjustable valve spring system has some bottleneck that sometimes gives inconsistency. 

I cannot accept this inconsistency. 

Bhaur
Click to expand...

Bhaur,

Do you know which part is creating the bottleneck? Try to describe how this issue is occurring and why the change will fix it?

Kirk
Click to expand...

Finally I changed the design and now the valve spring is inside the action and valve spring is no more adjustable. But at the same time the stem of valve is still opening in atmosphere. Further I have successfully made arrangement to limit the valve travel from outside the gun. So now although I can't adjust valve spring tension but I adjust the travel of valve. This arrangement is giving very good consistency so far. Further it is allowing me to tune the gun externally. Let's see. It's still R&D.

I shall share the pics and the video soon.

Bhaur
 
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