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DonnyFL moderator line-up, in order of "quietness"

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D

DHart

Member
Jul 7, 2018
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AZ, United States
I'm wondering if the DonnyFL moderator line up, from lightest/lowest priced to heaviest/highest priced is an indicator of relative degree of sound moderation?

Does this ranking below coincide with increasing amount of "quietness"?

1.22” x 5” 5.89 ci 3.9 oz. Tanto $99

1.6” x 4.25” 8.55 ci 4.1 oz Tatsu $130

1.22” x 7” 8.18 ci 4.7 oz. Koi $145

1.6” x 6.25” 12.57 ci 5.6 oz Sumo $150

1.6” x 8” 16.1 ci 7.2 oz Shogun $185

2” x 6.25” 19.64 ci 10.4 oz. Ronin $185

2” x 10” 31.42 ci 13 oz. Emperor $220
 
If I could go back in time I would have bought a Ronin to begin with but it wasn't available at that time I got the Sumo. The Emperor is sort of overkill IMO unless you are wanting to use it on a bigger bore or need it absolutely quiet on your 25 or smaller calibers. I tried it on a couple of 177 and 22s and they were ridiculously quiet but its like adding a mag lite to the end of your barrel.

CA
 
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I would assume the bigger the quieter. The bigger the more expensive to make.
Click to expand...

By bigger do you mean longer, wider, or more internal volume? And yes, a larger one takes more material, costing slightly more to make for materials, at the least.

But... what "quiets" better: slim and longer, short and fatter, or is it purely volume-based?

And it seems that volume would be proportional to weight. DonnyFLs are priced higher as the weight increases, which makes sense - more material/more cost. So, a heavier moderator likely has larger internal volume, and if internal volume determines how much moderating takes place, then the moderators get quieter as the weight (or volume) increases?



DONNY... would you please enlighten us? Do your moderators, as listed above, increase in ability to reduce sound levels as the weight increases?

And which, if either, moderates better: long and slim, or short and fat - or do they moderate equally... if their internal volumes are the same?
 
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I’m thinking that the more volume the quieter it will be. Although a 1” long moderator that’s 6” wide would not be as affective as a 6” moderator that’s 1” wide. I’m sure once you hit a certain length the width is more of a difference maker but I’m just guessing lol. Really I’m just brainstorming with you, hopefully someone knows the physics of it all and can chime in.
 
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I think so much of this also depends on the rifle and the volume of air it is putting out with each shot.

I have a Sumo on my Daystate Regal XL .22 cal and it is so quiet....really impressive! I have a Ronin on a .30cal Fx Impact and quiet, but not like the Regal. I have a couple of the Emperors on big bores. Lots of air and LOTS of BARK with no suppressor. The emperors really tame them. I fitted the Emperor to the Impact to see if it made it quieter and I could not tell a difference to the Ronin and my Iphone app measuring DB could not read a difference either. So it really goes to fitting the moderator to the air volume of the gun.

Whatever you choose for your rifle from Donny's line up you will get a really nice piece of hardware, and support a really great small business and airgun supporter.
 
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SkyCool and Loren... I agree with you guys!

I think when the caliber is smaller, like .177 or .22, and the rifle's barrel already has a silencing shroud, one may not hear much of a difference (if any!) between a medium size and a somewhat larger moderator. I came to this conclusion when I could not tell a noticeable difference between a Shogun and a Huggett Universal, when I tried them on my Bantam Sniper HR .22 - which is a fairly quiet rifle even without any moderator on it.

I'm hoping that Donny will chime in to help us all understand these things better! He makes great products... a wonderful contribution to air guns, and I look forward to getting more of his products over time!
 
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Hey guys! Awesome to see this thread. It's very hard for me to recommend a particular suppressor to someone. Everyone's needs are different and unless you're in that person's shoes, you really don't know the level of quiet they need. But I would say about 80% of the people who call me, already have a suppressor in mind. They either want me to confirm or want me to go recommend a larger one so they can then go to their wife and say, the suppressor guru told me to get the Emperor, I must get it! 

When I came out with the Sumo it was going to be my one and only suppressor. But like I said, everyone has a different need and they want a different size that best fits theirs. I started to make them based on your feedbacks. Just because the Tanto is small doesn't mean he can't compete with the big boys. At the Utah RMAC shoot and at recent EBR, some guys were using the Tanto on their high powered guns and it sounded awesome. This is probably because of the open field and air is freely to expand. But when you have a property like mine where neighbors are 10 feet apart on each side of my house and I have 50 yds to shoot in the back, I am going to put an Emperor on it for maximum suppression. 

Most guns do not need a big can in the front to suppress the crack. So a tanto or tatsu will do. But what bigger cans will do is absorb and hold more air. Even with the crack taken care of, you'll still hear a big swooosh of air coming out. So the bigger the can the more air it will capture and the less swoosh you'll hear leaving the gun. The muffled noise is what we want. 

There's also a level of diminishing return as you go bigger. Your gun might not need a big ronin or shogun to make it quiet. So you might say the Emperor sounded like the Ronin and that could be true because your gun really only needed the Ronin to maxed out the performance. The emperor was overkill for that gun. An Emperor is a must have in your gun case just for the hell of it, it sounds awesome!

Is a longer suppressor quieter than a shorter stalker one? Not always, as long as you make everything proportionate and give air space to move, given the same volume it should have the same results. Example, Ken Hicks from SPAW did a db test for me. A .22 Daystate Wolverine R shooting without suppressor had a db reading of 80.7 db. With Shogun it dropped down to 72.9db. With Ronin 72.5 db. so the results are very similar or even basically the same. .4 db difference could have been anything.

I made the Tanto because some of the guys asked me to make a $100 or less suppressor, I think it is worth more based on the quality and how well it performs but that's my way of giving back to the community.

Today I am in a position that I've never thought I would be in, making something that brings joy to others and allows you to enjoy the hobby we all love even more. Your feedback is important to me bad or good. So I'd like to thank you again for everything.

Donny
 
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Thanks Donny for chiming in. And congratulations for your success; you've certainly earned it with great product, service, and pricing!

My hunch was that volume matters more than length vs girth - to a degree, anyway. Glad that you confirmed it. Indeed, your Tanto is a great and very reasonably priced moderator! Thank you for "giving back" to the community with that "special price" offering.



============================================================================================

For my own use, to help me decide which models might suit my personal needs, I calculated their internal volumes and grouped them, including dimensions, weights, and price.

When it comes to selecting a moderator, the degree of sound reduction is the primary consideration, but size appearance (length & girth) can be very important to people. And weight can be, of course, an important consideration as well. That's why I included dimensions, volumes, and weights in the groups below.

Sorted by ascending weight/price:

1.22” x 5” 5.89 ci 3.9 oz. Tanto $99

1.6” x 4.25” 8.55 ci 4.1 oz Tatsu $130

1.22” x 7” 8.18 ci 4.7 oz. Koi $145

1.6” x 6.25” 12.57 ci 5.6 oz Sumo $150

1.6” x 8” 16.1 ci 7.2 oz Shogun $185

2” x 6.25” 19.64 ci 10.4 oz. Ronin $185

2” x 10” 31.42 ci 13 oz. Emperor $220



Grouped by diameter, then by ascending weight/price.

1.22” x 5” 5.89 ci 3.9 oz. Tanto $99

1.22” x 7” 8.18 ci 4.7 oz. Koi $145



1.6” x 4.25” 8.55 ci 4.1 oz Tatsu $130

1.6” x 6.25” 12.57 ci 5.6 oz Sumo $150

1.6” x 8” 16.1 ci 7.2 oz Shogun $185



2” x 6.25” 19.64 ci 10.4 oz. Ronin $185

2” x 10” 31.42 ci 13 oz. Emperor $220










 
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Now if only you put out a cone end cap for the Sumo and then beveled the end of the Texan adapter so they faired from barrel to adapter to can because to some it just looks 'too square shouldered' and not organic sitting on the end of barrel. Need some 'angle', especially on my Texan 'ray gun'.

I have bought a CF sleeve for the barrel that will fair in to the adapter so it all seems the same OD for now.


 
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I’m thinking that the more volume the quieter it will be. Although a 1” long moderator that’s 6” wide would not be as affective as a 6” moderator that’s 1” wide. I’m sure once you hit a certain length the width is more of a difference maker but I’m just guessing lol. Really I’m just brainstorming with you, hopefully someone knows the physics of it all and can chime in.
Click to expand...


1 inch wide x 6 inches long would have a volume of about 4.7 cubic inches.

1 inch long x 6 inches wide would have a volume of about 28 cubic inches.

I get what you meant though.
 
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