Standard 22 Moderator 1/2 UNF x 20

[OldCrow]

I put the Archangel on a .22 28FPE PCP.

It works but for its size I expect better.
After all it's ticker than the air bottle.

No more tick and short moderators for me.
The longer moderators work much better.

Yup.  Fat moderators need a different approach to damping.  They work best when designed to absorb the noise.  Have a look at the moderator that comes with the AF Talon.  Completely different design.

[naptemp]

I put the Archangel on a .22 28FPE PCP.

It works but for its size I expect better.
After all it's ticker than the air bottle.

No more tick and short moderators for me.
The longer moderators work much better.

Yup.  Fat moderators need a different approach to damping.  They work best when designed to absorb the noise.  Have a look at the moderator that comes with the AF Talon.  Completely different design.

I am not sure what you are saying.

I thought that the fat Archangel moderator is the quietest of the designs you shared.
For the volume it's not quiet enough, for me at least.

By the way, I like the Wraith for low powered (under 12 FPE) .177 caliber, better than anything I have.
But for 12+ FPE longer moderators work better.

[OldCrow]

I put the Archangel on a .22 28FPE PCP.

It works but for its size I expect better.
After all it's ticker than the air bottle.

No more tick and short moderators for me.
The longer moderators work much better.

Yup.  Fat moderators need a different approach to damping.  They work best when designed to absorb the noise.  Have a look at the moderator that comes with the AF Talon.  Completely different design.

I am not sure what you are saying.

I thought that the fat Archangel moderator is the quietest of the designs you shared.
For the volume it's not quiet enough, for me at least.

By the way, I like the Wraith for low powered (under 12 FPE) .177 caliber, better than anything I have.
But for 12+ FPE longer moderators work better.

Oh no.  That is just one of the moderators we built during testing.  I printed perhaps two of those.  Some people want a moderator more for the look than for the performance.  That one isn't a very good performer.  This collection of moderators lets anyone who wants duplicate all the testing I've done on Tesla Baffles.

The best one is the one YOU like the best.  All of the sensible looking moderators are my favorites and they are the ones which perform the best.  The quietist?  Probably the Wraith or the Mamba I think it would depend on the caliber and power level of the rifle (and probably the way you were holding your mouth that day)

[naptemp]

I put the Archangel on a .22 28FPE PCP.

It works but for its size I expect better.
After all it's ticker than the air bottle.

No more tick and short moderators for me.
The longer moderators work much better.

Yup.  Fat moderators need a different approach to damping.  They work best when designed to absorb the noise.  Have a look at the moderator that comes with the AF Talon.  Completely different design.

I am not sure what you are saying.

I thought that the fat Archangel moderator is the quietest of the designs you shared.
For the volume it's not quiet enough, for me at least.

By the way, I like the Wraith for low powered (under 12 FPE) .177 caliber, better than anything I have.
But for 12+ FPE longer moderators work better.

Oh no.  That is just one of the moderators we built during testing.  I printed perhaps two of those.  Some people want a moderator more for the look than for the performance.  That one isn't a very good performer.  This collection of moderators lets anyone who wants duplicate all the testing I've done on Tesla Baffles.

The best one is the one YOU like the best.  All of the sensible looking moderators are my favorites and they are the ones which perform the best.  The quietist?  Probably the Wraith or the Mamba I think it would depend on the caliber and power level of the rifle (and probably the way you were holding your mouth that day)

That Archangel certainly looks impressive.
It makes any gun look like a bazooka

[HunterWhite]

I have a question.
Do any of you guys sell printed parts?
I might be interested in buying a couple of these.

Hunter 

[bduares]

I have a question.
Do any of you guys sell printed parts?
I might be interested in buying a couple of these.

Hunter

I take it you would be wanting them in .25 cal. I unfortunately have only been making .22 cal.

However, several of the assortment of .22 mods I have printed recently look like they would easily also work for a .25. The passage through looks more than large enough on some like these. I have no idea what it might cost to mail it to you, but it shouldn't be more than $10 to send a padded envelope to most places within the US. These are Pete's Long and shorter mods and his Tesla mod that I printed for the Sumatra destruction test. They all survived being shot repeatedly by my Sumatra at over 70 fpe.

[subscriber]

Gents,

Before you make a decision, I want you to know that the front cap bore diameter is significantly larger than the first baffle at the rear, because I enable the mounted mods to tolerate 1/4 degree of droop or other angular misalignment, without clipping, in .22 caliber. 

The Tesla Valve mod, for example was designed for the printed bore diameter of the fist baffle to be 7 mm.   If you deem that wide enough for .25 then OK, but I would not want to disappoint you, if it clips.

The other two mods with the checkerboard texture have their first baffle sized in CAD to print at 7.5 mm, with the same diameter increase towards the front of 1/4 degree per side.  That is about 0.2 mm in diameter larger for each 25 mm increase in length.  If that sounds a lot, consider that angular droop is one-sided, and we don't know which way such droop or part to part misalignment might occur.  If you want custom baffle bore diameters, without enlargement towards the front, I can do that.  I just do not recommend it for long mods; especially shroud mounted ones.

As my .22 Tesla Valve mod has the highest risk of clipping when used with a .25 PCP, I could design that one for .25 caliber.  I can do the extra strong version, as tested by Jared on his  Sumatra, and / or the lightweight design I did for John.  I can also redo the other two mods Jared tested, designed for .25. 

It would be useful to know what PCP you are attaching it to, and at what power you are shooting?   Active shroud or direct barrel mount are also considerations for performance and potential misalignment.

If Jared is not up for printing .25 variants, you can commission forum member TorqueMaster to print them for you; or anyone else you choose.

I have a question.
Do any of you guys sell printed parts?
I might be interested in buying a couple of these.

Hunter

I take it you would be wanting them in .25 cal. I unfortunately have only been making .22 cal.

However, several of the assortment of .22 mods I have printed recently look like they would easily also work for a .25. The passage through looks more than large enough on some like these. I have no idea what it might cost to mail it to you, but it shouldn't be more than $10 to send a padded envelope to most places within the US. These are Pete's Long and shorter mods and his Tesla mod that I printed for the Sumatra destruction test. They all survived being shot repeatedly by my Sumatra at over 70 fpe.

[subscriber]

The next two designs are my .22 tesla valve mod, redesigned for .25 cal.  Variants are "light weight" and "high FPE" (30 percent heavier). 

I will attach one design per post.  You (anyone) can decide if you want to print them or not.

[subscriber]

High FPE:

[TorqueMaster]

I have a question.
Do any of you guys sell printed parts?
I might be interested in buying a couple of these.

Hunter

PM sent.

[subscriber]

High FPE TV mod image.

[naptemp]

Peter, thank you for the Tesla valve moderators.
I printed 2 in. 177 and 2 in .22.
I will print 1 more in each caliber.

They work better than any other moderator with similar volume I have tried.

Now I have a few unused moderators.

[bduares]

I have a question.
Do any of you guys sell printed parts?
I might be interested in buying a couple of these.

Hunter

I could print out the .25 Tesla mod of Pete's for you and mail it to you for $20 if you want one of those, unless you have seen a different type on here that you want. I have an overabundance of white PETG at the moment. Unless you wanted it to stay white I do still have some black satin Rustoleum 2x primer & paint left, which seems to have solvents in it that makes the prints stronger.

[subscriber]

Peter, thank you for the Tesla valve moderators.
...
They work better than any other moderator with similar volume I have tried.

John,

That is good news.  I presume you mean that you like the sound.  The million dollar question is, what are your comments about grouping with them, compared to other mods?

[OldCrow]

Here is a 3mf file which you can pull into your slicer and print.

It is just a good little moderator.  This one I've dubbed the "Standard" model because after a couple of years of design, testing, tweaking and shooting it has become the standard whereby I judge other designs (there are many).  I've often toyed with the idea of going commercial with these designs but life happens.

Still I am getting a bit long in the tooth and thought it best to get this out there where others can enjoy it as much as I have.

The file is on "thingiverse.com".  I have elected not to upload it to this forum.  I suppose someone might want to do that but as a courtesy please don't.  I'd like to control the design and minimize remixes.  If you want to change the design or make a remix by all means help yourself, just change the name of the design.

If you do  print one and you find it is worth the effort and want to recommend the design to other folks, please give them this link:
https://www.thingiverse.com/thing:6969058

Thanks
Mike

This one or the Ember.

[naptemp]

Peter, thank you for the Tesla valve moderators.
...
They work better than any other moderator with similar volume I have tried.

John,

That is good news.  I presume you mean that you like the sound.  The million dollar question is, what are your comments about grouping with them, compared to other mods?

I have already installed and shot all 4 of them on my air rifles.
I could not see any changes in accuracy.

[OldCrow]

Avenger insert failed during testing today.  Accuracy was there and quieting was very satisfactory for the volume.  I'll beef it up and soon enough it will be up on www.thingiverse.com

The gun was smokin with 35.8 EunJins at 860 fps for almost 59 fpe.  That's considerably more than I had expected. 

[subscriber]

I have already installed and shot all 4 of them on my air rifles.
I could not see any changes in accuracy.

Thanks John

[HunterWhite]

I have another question.
Is it possible to run a tap in into the 1/2-20 threads. I have looked at the specs and I think that I could drill it to 12.5 mm then tap it 14mm-1.25. I haven’t read about anyone machining this stuff

I have ordered a 14 mm tap and a 16-1.25 tap and a metal insert 16 OD, 14 ID.
I will just loctite it in place.


Hunter

[subscriber]

It is common practice to chase a thread to obtain a precise fit.  If you want a 14 x 1.25 mm thread it can be printed at that size, but a little tight, so you tap cleans it up. 

If this is for a Pinty PCP, I thought those have a 14 x 1 mm pitch.  Either way, of you want a given thread size I can get you close by printing.  Yes you can drill or bore it out on a lathe and retap to a larger size, but the fewer steps the lower the risk of eccentric or angular errors.

How long is the threaded stud from its front face to the mounting shoulder?  Which mod do you want with that thread?

If your question is general, then "yes" depending on your skill.   Drilling a thread out may have the drill wobble as it follows the existing thread.  A short stiff endmill, or boring bar would be better for recutting a clean hole at the larger size.

One consideration would be the wall thickness of the solid thread boss around the original thread, and how much larger you want to go.  14 mm does not sound too risky, starting with 1/2".  It depends on the original design.

Forum member firewalker has done a lot of re-threading printed mods.  You could ask him for advice:  https://www.gatewaytoairguns.org/GTA/index.php?action=profile;u=66525

I have another question.
Is it possible to run a tap in into the 1/2-20 threads. I have looked at the specs and I think that I could drill it to 12.5 mm then tap it 14mm-1.25. I haven’t read about anyone machining this stuff

Hunter