Testing new discovery

[Nvreloader]

More info,
I have a OEM C&H Research Mercury Recoil Suppressor, 8 oz, stock type,
when I hold this suppressor flat/level in my hand, and slowly tilt it to 30/45* angles, either direction,
I can feel nothing moving etc.

If I take it and slightly shake it side to side, while holding it level,
I can hear and feel (what feels like an inside object) contacting either end,
but I believe that it is just the air pocket be displaced via the mercury's movement etc.

The more violent I shake it, the more pronounced it becomes etc,
if I use this suppressor as a dead blow hammer, there is no bounce, etc.

I know from my limited testing so far, that 7.46 oz's (combined total of mount/mercury) works in my air rifle combo.

So what about this thought?

Using the poly carbonate tubes/vials and have a secure way to seal in the mercury,
and still be able to adjust the amount of mercury needed for testing the results,
and would also provide strong lighter containers etc.

FWIW,

Tia,
Don

[shorty]

There are rheological additives that I use to change viscosity for polymers. I have one that will turn water from 20cp to up and over 2000cp (syrup/catsup).

I also have a couple brooksfield viscometers to measure fluid viscosity. I use a silicon "standard" for calibration which can be found here:


Silicons are used for the calibration due to the T/C/V.

[grand-galop]

Mercury can form an amalgam with aluminum, lead or gold, and can combine with copper (the main component of brass).... Generally the oxide coating on any metal will prevent a reaction, but if the metal is scratched through the oxide layer, then the mercury will combine with it in some way.... As kids, we used to coat copper pennies with Mercury, and they looked like a shiny dime (hey, I'm still alive)....  ….  However, it is relatively unreactive with steel.... I don't know about brass, it may well depend on the alloy....

Tim, I think the shot has to be able to move relative to itself, in reaction to barrel vibrations.... What you are suggesting might work better to reduce recoil, IMO.... I think the fluid is mostly to prevent the shot from rattling and to protect it from beating itself to dust.... I plan to try a 10 weight oil, at least in the first one.... I want to get some synthetic 10W 2-stroke oil to try Knife's bullet lubing, so I'm just going to use that....

Bob

In the 80's, the same principal was used for ulr shooters.... They use a 6 inch tube filled to 80%of Mercury drilled and glued in the butt stock.. It was managing the recoil and damping the vibration of the ole rifle..

[robertr]

 This is my version of Knife's discovery. I am going outside to test, storm clouds rolling in.

[KnifeMaker]

I'm intrgued by the possibilityes of mercury!


to answer a few questions, No laminates on the barrel won't help. they will change the frequency of the vibrations though. My barrel is laminated. TJ barrel, laminated with two 2mm thick carbon twill tubes.


This did increase accuracy. But not where near the dampener added, which is attached to an ldc that is screwed onto the shroud. so yes, It works with shrouds as well, as long as the shroud is in contact with the muzzle.


 Mine is fitted wit a Neil Clague fitting that centers the shroud to the muzzle. My apologies for not responding so fast to this thread.
Dr gave me muscle relaxers yesterday for my back. Knocked me for a loop!


I don't respond well to drugs. Grrrrr!!!


My unit is rather heavy at 14 ox. however I use it only at the bench, and as my barrel is layers with two carbon fiber twill tubes, and threaded into the breech, there is very little poi change when I remove it. 


It is attached to the bottom of the ldc which is fitted with a picatinny rail, and the rings are quick release. So "on and off" is only a second or two job.


Keep the ideas coming Guy's, this is ground breaking stuff! Lots of possibilities here. I think Donny really missed the boat here.


His loss, our gain. 




Knife/Knife

[robertr]

 I got a few shots in before the rain started. Five shots without device and five shots with the device at 50 yards.

 I need to shoot more groups to verify if these results hold up.

 Weight of device is 2.8 oz which caused the drop in impact point but left ,right stayed the same. My rifle is set up for 25fpe.

[Nvreloader]

Robert R

Great results, cleaner group for after target. 

Would you care to add more info on what type of filler/oil and shot used,
dimensions of your device, weights of stock material etc?

Is there a possibility of adding a fill spot to add or remove the inside components,
to change the total spec's of your dampener?

Thank you,
Don

I got a few shots in before the rain started. Five shots without device and five shots with the device at 50 yards.
 I need to shoot more groups to verify if these results hold up.
 Weight of device is 2.8 oz which caused the drop in impact point but left ,right stayed the same. My rifle is set up for 25fpe.

[rsterne]

I don't know for sure, but I doubt mercury would be a problem inside brass.... Brass in contact with aluminum, in the presence of moisture, can corrode badly, however.... same with aluminum and steel.... If it stays dry, it should be OK....

Bob

[robertr]

Robert R

Great results, cleaner group for after target. 

Would you care to add more info on what type of filler/oil and shot used,
dimensions of your device, weights of stock material etc?

Is there a possibility of adding a fill spot to add or remove the inside components,
to change the total spec's of your dampener?

Thank you,
Don

I got a few shots in before the rain started. Five shots without device and five shots with the device at 50 yards.
 I need to shoot more groups to verify if these results hold up.
 Weight of device is 2.8 oz which caused the drop in impact point but left ,right stayed the same. My rifle is set up for 25fpe.

 Sure Don, I will post the info tomorrow.

[KnifeMaker]

Due the stiffness of my barrel with the CF tubes it doesn't seem to change poi even with the 14 ounce device. but a normal barrel will. Luckily, scopes have adjustments for this. LOL 

[KnifeMaker]

I got a few shots in before the rain started. Five shots without device and five shots with the device at 50 yards.

 I need to shoot more groups to verify if these results hold up.

 Weight of device is 2.8 oz which caused the drop in impact point but left ,right stayed the same. My rifle is set up for 25fpe.

Robert, the group size cut in half on first try seems like your on the right track for sure!


Knife

[robertr]

 I hope so Mike, very small number of shots for a test but hoping for the best.

 

[JungleShooter]

Not trying to rain on your parade — actually I'm really excited I get to witness innovation and the progress of our hobby as it happens!

So, here comes my question when looking at the photos of the MAD Pipe*:
Would this work on bullpups where the airtube extends right up to the end of the barrel? 

*MAD Pipe = Mike's Airgun Dampener Pipe


Matthias

[superchikn]

Not trying to rain on your parade — actually I'm really excited I get to witness innovation and the progress of our hobby as it happens!

So, here comes my question when looking at the photos of the MAD Pipe*:
Would this work on bullpups where the airtube extends right up to the end of the barrel? 

*MAD Pipe = Mike's Airgun Dampener Pipe


Matthias

I don't have a bullpup... yet! 

I believe most are shrouded as is my Liberty with little room past the air tank for anything undermounted.  I plan within the next few days to make up some prototype mercury filled vials to secure within the end of my shroud and to test.  I'm thinking this should be adaptable to your situation as well.  Fingers crossed.

[KnifeMaker]

As long as the barrel has a device on it that centers, (Locks) the barrel muzzle in line with the exit of the shroud, YES the device will work.


and just about all do. Some are air strippers, some just centering pieces. All will allow the dampener to work.


Mike

[JungleShooter]

Cool! COOL!!  Very excited! 

[robertr]

 Some info that might be useful. I added the machine screw to adjust if necessary.
 
1- 2 3/8 L x 5/8 od copper pipe

2- end caps

1- 5/8 coupler

1-1/2-20 machine screw

1- o-ring

2- copper stand offs from pipe to allow for hose clamp

1- hose clamp

2- copper discs for threaded end

 A little JB Weld and Gorilla glue.

       68 grams empty

36- copperhead bb's- 12.2 grams

        17.1 grams BB.s and oil, filled to about 3/4 full with oil after BB's are added.

 85.1 grams total weight or 3 oz.

[Nvreloader]

Thanks Robert

What air gun and caliber and pellet weight? 

Clean easy way for adjustment etc.

Don

[robertr]

 Your welcome Don.

Rifle BSA Scorpion SE .22
Pellet AA 16gr
25 fpe

[aceflier]

Just threw this snake oil contraption together. Going to zip tie it to the .25 mrod and shoot the 43gr bbt it absolutely hates. Licky if its 3” at 20yds.

4  2 3/4” shells of 8 shot with propylene glycol.