baffle spacing??

canenvy · Post by **canenvy** » Thu May 08, 2008 8:43 am

on a .22 can with "flat washers" as baffles is there any rule of thumb as to how much space should between them?

James Jones · Post by **James Jones** » Thu May 08, 2008 12:59 pm

I think it would depend on how long the can was and the ID of the tube , I have a drawing here for basicaly a scaled down Tac16 but with semi cone shaped baffels , the first blast chamber is 1.5" then the rest of the chambered are .75" , its all aluminum 1.125"OD bar stock with a 1" ID and 7" long.

canenvy · Post by **canenvy** » Thu May 08, 2008 3:10 pm

i was going to do a 1.5 id and 7" tube

Hush · Post by **Hush** » Thu May 08, 2008 9:12 pm

You could space them @ 1 inch intervals.

James Jones · Post by **James Jones** » Thu May 08, 2008 9:43 pm

I was thinking that with the larger diameter to make up for volume that you would be able to space them closer making for more baffels , still trying to get my head around this whole deal on how they work and whats most effecient so I could be totaly backwards

canenvy · Post by **canenvy** » Fri May 09, 2008 10:19 am

Hush wrote:You could space them @ 1 inch intervals.

would that be most efficient?

Hush · Post by **Hush** » Fri May 09, 2008 12:02 pm

canenvy wrote:
Hush wrote:You could space them @ 1 inch intervals.
would that be most efficient?

As just about everything else in life its a trade off, you can space them half an inch apart, it would be more efficient but then you will have all that extra weight.
Actually if you want more efficiency I'd use stainless steel washers, they won't rust and SS is softer so you can shape them, even a slight funnel shape is better than just a flat washer, see the freezer plug thread where the fellow used a ball bearing and socket to shape the freezer plugs.
Actually for a .22 you can use 1x7 inch tube.
A really efficient design for a rifle would be 1x10 with baffle spaced every inch, you would only hear the firing pin strike and bullet impact with a bolt action rifle, the problem is it might be too big for a hand gun.

canenvy · Post by **canenvy** » Fri May 09, 2008 12:32 pm

Hush wrote:
canenvy wrote:
Hush wrote:You could space them @ 1 inch intervals.
would that be most efficient?
As just about everything else in life its a trade off, you can space them half an inch apart, it would be more efficient but then you will have all that extra weight.
Actually if you want more efficiency I'd use stainless steel washers, they won't rust and SS is softer so you can shape them, even a slight funnel shape is better than just a flat washer, see the freezer plug thread where the fellow used a ball bearing and socket to shape the freezer plugs.
Actually for a .22 you can use 1x7 inch tube.
A really efficient design for a rifle would be 1x10 with baffle spaced every inch, you would only hear the firing pin strike and bullet impact with a bolt action rifle, the problem is it might be too big for a hand gun.

well i dont care about size just how it sounds. so i guess ill go 1.5x10 with a 1.0 spacing. what do you think?

Hush · Post by **Hush** » Sat May 10, 2008 4:20 pm

Well if you really want to go with a 1.5 inch diameter tube 7 or 8 inches should be fine, your making up in width for the length as far as volume goes if you catch my drift.
Plus with a wider can you might have to go with higher scope mounts to obtain a clear sight picture, on a pistol you won't be able to use the sights.

canenvy · Post by **canenvy** » Thu May 15, 2008 2:17 pm

if i did a 1.50" in dia x 10.50" length tube with .50" front and back caps so the inner area would be 9.50" then used .500" spacing with 15 baffles with a 2.00" blast chamber

how do you guys think that would work?

Dweezil · Post by **Dweezil** » Thu May 15, 2008 7:09 pm

Yes, but overkill.

canenvy · Post by **canenvy** » Thu May 15, 2008 10:10 pm

Dweezil wrote:Yes, but overkill.

well help me shorten it up but i have all the free 1.5 id pipe i need so i want to stick with 1.5 id tube.

PTK · Post by **PTK** » Fri May 16, 2008 8:03 am

The .22lr silencer I made (with K baffles, mind you) is spaced just under an inch apart. The OD is just a hair over 1.125 and it's 6" long, and it's quieter than I thought it could be.

Dweezil · Post by **Dweezil** » Fri May 16, 2008 9:16 pm

How do you intend to attach it to the muzzle? What application? Rifle? Pistol? If you're putting it on a 10/22 with bull barrel and don't have much in the way of tooling, you may be able to find tubing that is a tight slip fit over the barrel as your starting point and find washers to fit. In the latter application, assuming a roughly .920" ID, you could probably get by with about 6-7", measured forward from the muzzle, a primary expansion chamber of 1-1.5 inch and subsequent baffles spaced at .75" intervals. Using 1.5" OD tubing simply because it's free is false economy considering you have to pay $200 tax just for the privilege of building it...once. You DO have your Form 1 right? As Hush says, cup 'em if you can. Also, if this is your first attempt, go a bit larger with the baffle holes, 9/32-5/16. The slight reduction in suppresion is better than launching your $200 experiment into orbit because of a baffle strike.

canenvy · Post by **canenvy** » Tue May 20, 2008 3:18 pm

you guys are right im paying 200 for the stamp i might aswell have the quietest can possible. i talked with a local machine shop and they said as long as i have my forum 1 in hand and there when they make it they will make me what ever i want. so here are the specs i made for a k baffle. let me know what you guys think.

im going to try the d-cell mag light as a tube its alot less then having the tube threaded.

James Jones · Post by **James Jones** » Tue May 20, 2008 3:47 pm

Looks good , I would make the flat face about twice as thick so you can make a concave in it with a small cone type hole in the front that way it makes for a bit more of a ramp with the mouse hole , I had some of the clowns at work run this desgine through some flow chart program and it realy help disrupt the gas flow.
kinda like this one but I dicked it up and cut a little to much out of the nose

canenvy · Post by **canenvy** » Tue May 20, 2008 6:13 pm

dude that baffle looks great. wish you could make me some. how deep and wide should i make the concave in the back?