FX Crown hammer

[Mask]

I'm looking for information on a heavier hammer for my Crown. 25 and of all the threads I've read, I was struck by this. My question .... Why not actually make a brass weight with the same size and shape as the original FX one? If you know a good turning workshop or are able to use the lathe, you spend less than the hammers bought on ebay and you are sure that the hammer is fine and the spring guide must not be shortened.

 

[Shas]

Well I'm sorry for the late respond but here is a simple test of all the weights. Interesting result.... In my crown all the weights give simulare result

Long_Gun_Dallas You reach 65fps its nearly 90Joul in 0.22 I have caliber 0.25 What in earth have You done to fix that... Se my result in the pdf

View attachment 1587160221_11779483085e9a249decb405.55284880.pdf

 

[Mask]

@shas, ​​thanks for the reply. So, from your tests, I read that the power is identical, regardless of the weight of the hammer used, obviously the power rises with the increase in pressure, but identically for all 4 weights. But at 180 bar, the Joules developed are very few ... I thought more. Reading in the forum, we read of people who at such high pressures, with the crown in cal. 25 get almost 100J ... I ask myself a question .... what other jobs may have done to get so much power.



Ahhh ... You did an interesting job in the table.

 

[DanielL]

@shas, ​​thanks for the reply. So, from your tests, I read that the power is identical, regardless of the weight of the hammer used, obviously the power rises with the increase in pressure, but identically for all 4 weights. But at 180 bar, the Joules developed are very few ... I thought more. Reading in the forum, we read of people who at such high pressures, with the crown in cal. 25 get almost 100J ... I ask myself a question .... what other jobs may have done to get so much power.



Ahhh ... You did an interesting job in the table.

I would expect port work. Getting the valve to dump more and more air will hit the law of diminishing returns as that air gets throttled by the size of the port. 

 

[mtnGhost]

I'm looking for information on a heavier hammer for my Crown. 25 and of all the threads I've read, I was struck by this. My question .... Why not actually make a brass weight with the same size and shape as the original FX one? If you know a good turning workshop or are able to use the lathe, you spend less than the hammers bought on ebay and you are sure that the hammer is fine and the spring guide must not be shortened.

What are you asking.. to make a brass version of the (thin) hammer? I produced almost 80FPE with my Continuum in 22 cal, if you want that level of power you should modify your spring guide, crank up the pressure, and use a proper hammer weight. I'm not sure why you are opposed to modifying the guide

 

[Mask]

So putting 6.35mm VS titanium helps a lot to get more air through?

 

[Mask]

@mtngost, I'm not sure of anything. As you have been able to read so far, I have asked a lot of questions, precisely because I didn't have the slightest idea of ​​the jobs it does in my crown, in order to increase its power. No ... I'm not against changing the spring guide and putting a heavier hammer if that's the only way to get more J.

 

[Mask]

@mtngost, asks if it had been better to build a brass hammer equal to the original one was a question asked for my complete inexperience, but continuing to read the forum, I realized that it is a useless thing .... It is enough build a new hammer and cut the spring guide of the right size.

 

[Shas]

Hi again !

I have of course open up my valveseat to 6.35mm and uses a the new model of valvepin. I have also fixed the barret inlet 2x6mm holes so it should be a bit better power from this gun. I must have missed something...

I'm looking for information on a heavier hammer for my Crown. 25 and of all the threads I've read, I was struck by this. My question …. Why not actually make a brass weight with the same size and shape as the original FX one? If you know a good turning workshop or are able to use the lathe, you spend less than the hammers bought on ebay and you are sure that the hammer is fine and the spring guide must not be shortened.

Well the answer to that question is that the original hammer is from the beginning made of a very heavy metal. This solution is the cheapest and very easy to modify with different additional brassweights.