My thoughts about the h&s evolution 2024

I was wondering this morning if I ought to be measuring with pressure in the system. I'm sure I've got some thin film pressure sensors around somewhere that would allow for a more accurate measurement... Then we disappear down the rabbit hole of calibration, traceable or otherwise.
rabbit hole indeed ;) . One can look at the spring in the valve, count coils and length, diameter and wire gauge, and search for something similar (if no calculator is available) and get an idea of the spring rate... But, that is only part of the equation. Yes, the required force to depress the trigger is for sure influenced by the amount of air pressure, as the valve head is exposed directly to the force of that air pressure. The way you measured the first time is fine, if just comparing the weight to other brushes. You will get the idea which is softer, which is firmer, etc - but, not get any sort of measurement of the weight needed to depress the trigger in actual use. For my purposes, I really am not concerned with pin pointing the most accurate readings, but consistent readings. They readings are simply being used to compare one to another (in use), so their absolutes are not really required - just ballparks will do... I did multiple readings and then averaged them together to come up with the number I did. If measurements start getting down to within a few 10ths of one another and it would make some sort of difference, I may look for more accuracy.
 
about 437 grams on the stock spring with teflon seal. Ditch the teflon and use a 1.5mm ID x 1mm CS o-ring at the top of the air valve and easily cut that in half. Stock Micron Takumi trigger was about 394 grams for comparison.

Change your paint and grab some 4021 reducer, and you will see better results.
Thank you sir, I appreciate your feedback and I really admire your commitment, Its just that I don't think it worth for me to push further, when I was expecting a smooth out of the box experience.

I've decided to move on and get rid of the thing, and I don't think I would ever go back to this brand, for me it's about outlook and freedom to create instead of being cornered at every step just because a tool is too finicky to manage paints or simply it doesn't fit my needs.

Despite the mesmerizing fact of collecting these beauties, I need to focus on the aspects of production and development.

As far as I can see, createx recommends their 4011 reducer for all of their paints and I've heard the 4012 has more content of Isopropyl but they are no longer offering it in their website and there is no data sheet for it, also I need to use what I've purchased.
Then we disappear down the rabbit hole of calibration, traceable or otherwise.
Exactly!
 
Thank you sir, I appreciate your feedback and I really admire your commitment, Its just that I don't think it worth for me to push further, when I was expecting a smooth out of the box experience.

I've decided to move on and get rid of the thing, and I don't think I would ever go back to this brand, for me it's about outlook and freedom to create instead of being cornered at every step just because a tool is too finicky to manage paints or simply it doesn't fit my needs.

Despite the mesmerizing fact of collecting these beauties, I need to focus on the aspects of production and development.

As far as I can see, createx recommends their 4011 reducer for all of their paints and I've heard the 4012 has more content of Isopropyl but they are no longer offering it in their website and there is no data sheet for it, also I need to use what I've purchased.

Exactly!
just clarification - I mentioned using 4021 reducer, Createx's newest (and best for me). 4012 has been discontinued, and never contained isopropyl (although it does contain another alcohol).

Not every brush suits every person. You tried it, and it wasn't for you.
 
Thanks for sharing your thoughts about the Evolution 2024. There are a few points I'd like to comment on:
- Trigger tension
Yeah H&S uses stiffer springs in their needle guide compared with Iwata. If you try Ultra 2024, the trigger tension is even greater.
For the air valve tension, on the other hand, you can adjust it by turning the air valve screw. The air valve screw of H&S can travel a longer distance than the ones in Japanese airbrushes, so I'd say H&S has better adjustability regarding the air valve tension.

I order custom-made springs for both the needle guide and air valve, this is cost-effective for me since I can apply them on lots of my airbrushes. There are only a few airbrushes that don't require a replacement of a needle guide spring at all due to great adjustability, like Micron, Richpen 21x/22x/31x, Infinity and older airbrushes like T&C and Paasche.

- Cutaway handle
Not an issue for me, but I don't feel it's a useful feature either. Almost all Cutaway handles come with an O-ring, it's there so the handle can be placed at different orientations to avoid interference while holding it. The Cutaway is used to quickly flush the remaining paint in the cup because pulling the screw affords greater needle movement compared with pulling the trigger. But again, I don't use this feature.

- Trigger top
The carving is there to increase friction to the finger. Nowadays almost every airbrush trigger has the carving.
The front end of the trigger is sharp indeed. It's not an issue for me because only the front portion of my finger touches the trigger top hence I would never touch the front end. Some people prefer to sit their finger over the edge and I can imagine it could be uncomfortable.

- Spiry pattern on the needle guide
I thought it was only a cosmetic thing but Warrick mentioned in one of the videos that it's for preserving the lub.

- Weight
I also feel it is a bit heavier than I prefer, but interestingly Evolution 2024 overweighs Infinity (not 2024 Ver.) by only 10 grams, and I don't have any issue with the weight of Infinity.
Likewise, Iwata's HP-A/B is lighter than HP-AP/BP, Badger's older 100 is lighter than the modern ones. Not sure why they're making the airbrush heavier.


I haven't been using Evolution 2024 intensively, I personally don't feel a significant leap in terms of performance when switching from SilverLine to Evolution 2024. But I like the fact that H&S keeps improving their airbrushes.
 
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