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Link Posted: 2/3/2010 8:42:03 PM EDT
Im not going to drop $300 to save 1 ounce. I dont care how "cool" it looks. I thought thats why people would have it done was to save weight, increase cooling. I dont have anything against it I just was curious if it was worth it. The guys from ADCO will probably know the specs.
Link Posted: 2/4/2010 6:16:30 PM EDT
[Last Edit: 2/4/2010 6:19:36 PM EDT by MHrabarchuk]
Based on a 3/8 dimple on a 3/4" barrel, using the KAC patten you save 8 grams per dimple, on 4140 or 4150 barrel steel.

So on dontgiveahoots pic, 576 theoritical grams would be shed. ( 1 1/4lb)

454 grams in a LB.

Edited cause i re-checked my math.....
Link Posted: 2/5/2010 12:34:23 PM EDT
Originally Posted By MHrabarchuk:
Based on a 3/8 dimple on a 3/4" barrel, using the KAC patten you save 8 grams per dimple, on 4140 or 4150 barrel steel.

So on dontgiveahoots pic, 576 theoritical grams would be shed. ( 1 1/4lb)

454 grams in a LB.

Edited cause i re-checked my math.....

Nice. So 16oz? Now that would be worth it but that seems like a lot! All I want is a before and after
Link Posted: 2/5/2010 6:21:03 PM EDT
That is theoritical math, done in 3D modeling software....so for actauls, I can't help you.

Also it is assuming a 3/8 diameter dimple, .150 in deep. As i have never measured a dimple on a KAC barrel, that was just a guess.

Link Posted: 2/5/2010 6:47:51 PM EDT
How much weight does it save?
Link Posted: 2/5/2010 8:14:01 PM EDT
See above - Theoretically 20 OZ (576 grams) - on a .75 under the handguard bbl.
Link Posted: 2/5/2010 8:51:11 PM EDT
Link Posted: 2/5/2010 9:37:46 PM EDT

Originally Posted By GreenM4Guy:
Depending on original barrel dia, length, etc. I would guess you save about 6-8 oz on a carbine UHG, 10-12oz on a mid and a possibly 15-18oz, or so on a rifle length. If you guys would be patient, as soon as i do a few i will get solid measurements, until then these are my guesses. I would like to believe that the candaian above me is correct in his math, so.......

Cool, give us an update.
Link Posted: 2/5/2010 10:46:55 PM EDT
could there possibly be a price break or option for the entire barrel?
Link Posted: 2/6/2010 1:10:15 PM EDT
Link Posted: 2/6/2010 5:23:23 PM EDT
Link Posted: 2/6/2010 6:02:49 PM EDT
That would be worth it then. That would make the diff in the weight of my suppressor or at least come close.
Link Posted: 2/7/2010 5:18:02 AM EDT
Originally Posted By KevinB:
I am pretty sure Mike's math is good


We have to outsource our math to Canada.

That's okay. I became a cop so I wouldn't have to do math.
Link Posted: 2/7/2010 7:21:45 AM EDT
[Last Edit: 2/7/2010 7:23:23 AM EDT by Borisio]
You reduces few oz weight and create a lot of stress on the barrel. Every machinning operation on a metal part creates stress points. After such "work", the barrel has to be stress relieved.
Link Posted: 2/7/2010 8:34:45 AM EDT
tag
Link Posted: 2/7/2010 9:28:09 AM EDT
Originally Posted By GreenM4Guy:
Depending on original barrel dia, length, etc. I would guess you save about 6-8 oz on a carbine UHG, 10-12oz on a mid and a possibly 15-18oz, or so on a rifle length. If you guys would be patient, as soon as i do a few i will get solid measurements, until then these are my guesses. I would like to believe that the candaian above me is correct in his math, so.......


My barrel was delivered on Friday!!! Can't wait to see it.
Link Posted: 2/8/2010 4:14:55 AM EDT
Originally Posted By Borisio:
You reduces few oz weight and create a lot of stress on the barrel. Every machinning operation on a metal part creates stress points. After such "work", the barrel has to be stress relieved.


Based upon your research and analysis, I highly recommend you do not purchase, install or use one of these highly inaccurate, dangerous barrels. Leave the supply open to retards like me and the others here who like the idea so that the supply stays up and the cost stays down.

Thanks!
Link Posted: 2/8/2010 1:07:20 PM EDT
I'm curious to see where this goes. I asked about the reason for KAC's barrel dimpling on another forum and was told that it resulted in "better barrel harmonic, better cooling, and better weight." I was also told by a KAC employee that their dimpling process is patented, which is why you don't see it on other manufacturer's weapons. So, I'm sure you don't need me telling you this ADCO, but be sure to consult your legal folks cause KAC has it in their mind that barrel dimpling is theirs and theirs alone.

With that having been said, if it winds up becoming available to everyone, I'd definitely be interested. I'm always looking for ways to shed excess weight off my rifles.
Link Posted: 2/8/2010 1:17:36 PM EDT
Originally Posted By sgtlmj:
Originally Posted By KevinB:
I am pretty sure Mike's math is good


We have to outsource our math to Canada.

That's okay. I became a cop so I wouldn't have to do math.


Wonder how that would look on an Aug barrel :)
Link Posted: 2/8/2010 1:26:36 PM EDT
Originally Posted By M4wheeler:
Originally Posted By TCBA_Joe:
What advantages, other than looking cool does dimpling offer?

Weight savings, increased cooling, and better rigidity and consistency in strength over fluting?


Weight savings and increased cooling are the only ones I've heard of, though there may be more.


It's more aerodynamically efficient when you throw it down the driveway.

On a serious note, is the dimpling supposed to be more efficient/robust than traditional fluting? I have to do something like this to an LMT MRP barrel for my wife's gun (a scoche too heavy for her).
Link Posted: 2/8/2010 2:06:01 PM EDT
Originally Posted By 9divdoc:
Originally Posted By sgtlmj:
Originally Posted By KevinB:
I am pretty sure Mike's math is good


We have to outsource our math to Canada.

That's okay. I became a cop so I wouldn't have to do math.


Wonder how that would look on an Aug barrel :)


That's what I'm thinking. I'd only get it dimpled behind the gas block though, so it really wouldn't matter what it looked like.
Link Posted: 2/8/2010 2:29:56 PM EDT
"I was also told by a KAC employee that their dimpling process is patented, which is why you don't see it on other manufacturer's weapons."
The process of dimpling and dimpling itself are two different things. How they get 'r done is patented.
Link Posted: 2/13/2010 11:26:22 AM EDT
Do we have any weight loss pics or reduction numbers yet??
Link Posted: 2/13/2010 2:01:55 PM EDT
[Last Edit: 2/13/2010 6:38:32 PM EDT by The_Accuser]
Originally Posted By skeeters65:
Do we have any weight loss pics or reduction numbers yet??


Here are a few pics of my LMT MRP. Not sure on the weigh loss numbers as my scale wasn't working. I can definitely tell it is a lot lighter and the rifle balances better. I just mailed off a 10.5" barrel today to get dimpled under the handguard. Thanks to the guys at ADCO for the great work!






Link Posted: 2/13/2010 3:16:16 PM EDT
[Last Edit: 2/13/2010 3:17:13 PM EDT by AggiePhil]
Originally Posted By The_Accuser:
Originally Posted By skeeters65:
Do we have any weight loss pics or reduction numbers yet??


Here are a few pics of my LMT MRP. Not sure on the weigh loss numbers as my scale wasn't working. I can definitely tell it is a lot lighter and the rifle balances better. I just mailed off a 10.5" barrel today to get dimpled under the handguard.

http://i41.photobucket.com/albums/e251/the_accuser/b1.jpg
http://i41.photobucket.com/albums/e251/the_accuser/b2.jpg
http://i41.photobucket.com/albums/e251/the_accuser/b3.jpg



And just to clarify, that was done by who?
Link Posted: 2/13/2010 4:55:00 PM EDT
Looks like ADCO's fine work
Link Posted: 2/13/2010 5:52:26 PM EDT
Who all does barrel dimpling besides ADCO?
Link Posted: 2/13/2010 5:57:30 PM EDT
No dimples for me. That's ugly.
Link Posted: 2/13/2010 7:32:38 PM EDT
Originally Posted By The_Accuser:
Originally Posted By skeeters65:
Do we have any weight loss pics or reduction numbers yet??


Here are a few pics of my LMT MRP. Not sure on the weigh loss numbers as my scale wasn't working. I can definitely tell it is a lot lighter and the rifle balances better. I just mailed off a 10.5" barrel today to get dimpled under the handguard. Thanks to the guys at ADCO for the great work!

http://i41.photobucket.com/albums/e251/the_accuser/b1.jpg
http://i41.photobucket.com/albums/e251/the_accuser/b2.jpg
http://i41.photobucket.com/albums/e251/the_accuser/b3.jpg




wow, that looks great. good work adco.
Link Posted: 2/14/2010 2:53:18 AM EDT
I'm curious if they refinished the barrel after adding the dimples. I would think it'd be necessary, since you're drilling through the current finish layer. Maybe it's left up to the customer?
Link Posted: 2/14/2010 4:13:01 AM EDT
Originally Posted By AggiePhil:
I'm curious if they refinished the barrel after adding the dimples. I would think it'd be necessary, since you're drilling through the current finish layer. Maybe it's left up to the customer?


yes, refinishing the barrel is included in the price to dimple or re-contour a barrel.
Link Posted: 2/23/2010 6:03:47 PM EDT
[Last Edit: 2/23/2010 6:36:51 PM EDT by mkellett]


Some like it, some don't... I personally love the way my "golf ball" barrel turned out, and with the Troy Extreme rail I think it looks great and the setup is about as light as you can get in a sixteen inch carbine. Mine started with a Noveske Switchblock barrel that was dimpled by a member here on the boards, and I built the rest.
Link Posted: 2/23/2010 6:05:00 PM EDT
[Last Edit: 2/23/2010 6:37:30 PM EDT by mkellett]


Dimple details...
Link Posted: 2/23/2010 6:05:08 PM EDT
Can this be done on a 16" M4 profile barrel or is it too narrow in places to be able to be dimpled?
Link Posted: 2/23/2010 6:21:59 PM EDT
[Last Edit: 2/23/2010 6:22:17 PM EDT by INTrooper4255]
mkellett, red X's only!
Link Posted: 2/23/2010 6:37:44 PM EDT
Got'er done!
Link Posted: 2/23/2010 7:14:53 PM EDT
Originally Posted By mkellett:
http://gallery.me.com/mkellett/100044/Dimples2/web.jpg?ver=12669750510001

Dimple details...


Did MSTN do that?
Link Posted: 2/24/2010 2:57:42 AM EDT
Originally Posted By Remman:
Originally Posted By mkellett:
http://gallery.me.com/mkellett/100044/Dimples2/web.jpg?ver=12669750510001

Dimple details...


Did MSTN do that?


Yes, please tell who did the dimpling??

Link Posted: 2/24/2010 4:32:48 AM EDT
That is damn sexy mkellett...
Link Posted: 2/24/2010 5:50:42 AM EDT
Originally Posted By INTrooper4255:
Originally Posted By Remman:
Originally Posted By mkellett:
http://gallery.me.com/mkellett/100044/Dimples2/web.jpg?ver=12669750510001

Dimple details...


Did MSTN do that?


Yes, please tell who did the dimpling??



SR-47 did mine. I know that ADCO is offering this service as well, but the pattern is different. KAC has a patent on the dimpling they use so I would imagine that's why ADCO changed their pattern to linear rows with a slightly different dimple profile.

Marvin (SR-47) has some prior/current connection to the folks at KAC from what I've gathered, which may explain the difference in the patterns. TOP NOTCH work from Marvin though!
Link Posted: 2/28/2010 6:34:04 AM EDT
Link Posted: 3/1/2010 6:31:37 PM EDT
The whole dimpling vs. fluting for weight loss argument really baffles me. It reminds me of something I saw in a motorcycle shop one day... This guy was debating with a salesman over the need vs. expense for the carbon fiber bodywork and magnesium parts found on a higher-end bike model vs. the plastic and aluminum parts spec'd on the lower-priced but otherwise equal model bike. This guy was going on and on about how important the forty-something pound weight difference was on the track...

The fat fucktard was about fifty pounds overweight and hadn't seen a gym since puberty.

Wanna fight over a difference of 2.5 ounces? Do yourself a favor and go run a few laps around the block and skip the Snickers bars.

I personally built a "dimpled rifle" because I really like the way it looks, and I really don't give a shit whether it's lighter, stronger of if it shoots laser beams out it's ass. That's the beauty of personal choice!
Link Posted: 4/8/2010 1:22:48 PM EDT
[Last Edit: 4/8/2010 1:29:04 PM EDT by Dan46n2]
ADCO, can I send the upper with barrel attatched for the dimpling? I'm in the process of moving and have all my tools packed up. Also if there is any way to get around having to do the linear pattern, likea sligtly differnt size dimple for example would look much nicer IMO.

EDIT: Nevermind went to your webpage and saw you can send in a complete upper.
Link Posted: 4/8/2010 1:29:51 PM EDT
Originally Posted By mkellett:
Originally Posted By INTrooper4255:
Originally Posted By Remman:
Originally Posted By mkellett:
http://gallery.me.com/mkellett/100044/Dimples2/web.jpg?ver=12669750510001

Dimple details...


Did MSTN do that?


Yes, please tell who did the dimpling??



SR-47 did mine. I know that ADCO is offering this service as well, but the pattern is different. KAC has a patent on the dimpling they use so I would imagine that's why ADCO changed their pattern to linear rows with a slightly different dimple profile.

Marvin (SR-47) has some prior/current connection to the folks at KAC from what I've gathered, which may explain the difference in the patterns. TOP NOTCH work from Marvin though!


Marvin just finished my 11.5 BCM and I'm just waiting to get it back now. He's the only one I know of that does the KAC dimple pattern. He's done quite a few barrels for guys around here and they've all turned out great. Can't wait to see it
Link Posted: 4/8/2010 1:31:27 PM EDT
I'm waiting to get my MRP barrel from Marvin from having it dimpled in the KAC style. I can't wait either!
Link Posted: 4/8/2010 2:07:20 PM EDT

Originally Posted By Jeep297:
Originally Posted By mkellett:
Originally Posted By INTrooper4255:
Originally Posted By Remman:
Originally Posted By mkellett:
http://gallery.me.com/mkellett/100044/Dimples2/web.jpg?ver=12669750510001

Dimple details...


Did MSTN do that?


Yes, please tell who did the dimpling??



SR-47 did mine. I know that ADCO is offering this service as well, but the pattern is different. KAC has a patent on the dimpling they use so I would imagine that's why ADCO changed their pattern to linear rows with a slightly different dimple profile.

Marvin (SR-47) has some prior/current connection to the folks at KAC from what I've gathered, which may explain the difference in the patterns. TOP NOTCH work from Marvin though!


Marvin just finished my 11.5 BCM and I'm just waiting to get it back now. He's the only one I know of that does the KAC dimple pattern. He's done quite a few barrels for guys around here and they've all turned out great. Can't wait to see it

How did you have an 11.5" BCM dimpled? Just forward of the FSB?
Link Posted: 4/8/2010 2:14:43 PM EDT
Originally Posted By 45FMJoe:

Originally Posted By Jeep297:
Originally Posted By mkellett:
Originally Posted By INTrooper4255:
Originally Posted By Remman:
Originally Posted By mkellett:
http://gallery.me.com/mkellett/100044/Dimples2/web.jpg?ver=12669750510001

Dimple details...


Did MSTN do that?


Yes, please tell who did the dimpling??



SR-47 did mine. I know that ADCO is offering this service as well, but the pattern is different. KAC has a patent on the dimpling they use so I would imagine that's why ADCO changed their pattern to linear rows with a slightly different dimple profile.

Marvin (SR-47) has some prior/current connection to the folks at KAC from what I've gathered, which may explain the difference in the patterns. TOP NOTCH work from Marvin though!


Marvin just finished my 11.5 BCM and I'm just waiting to get it back now. He's the only one I know of that does the KAC dimple pattern. He's done quite a few barrels for guys around here and they've all turned out great. Can't wait to see it

How did you have an 11.5" BCM dimpled? Just forward of the FSB?


I had the whole barrel dimpled. Not really for looks since you don't see much of the barrel past the URX rail. I just wanted to lighten it up a little.
Link Posted: 4/8/2010 2:15:39 PM EDT

Originally Posted By Jeep297:
Originally Posted By 45FMJoe:

Originally Posted By Jeep297:
Originally Posted By mkellett:
Originally Posted By INTrooper4255:
Originally Posted By Remman:
Originally Posted By mkellett:
http://gallery.me.com/mkellett/100044/Dimples2/web.jpg?ver=12669750510001

Dimple details...


Did MSTN do that?


Yes, please tell who did the dimpling??



SR-47 did mine. I know that ADCO is offering this service as well, but the pattern is different. KAC has a patent on the dimpling they use so I would imagine that's why ADCO changed their pattern to linear rows with a slightly different dimple profile.

Marvin (SR-47) has some prior/current connection to the folks at KAC from what I've gathered, which may explain the difference in the patterns. TOP NOTCH work from Marvin though!


Marvin just finished my 11.5 BCM and I'm just waiting to get it back now. He's the only one I know of that does the KAC dimple pattern. He's done quite a few barrels for guys around here and they've all turned out great. Can't wait to see it

How did you have an 11.5" BCM dimpled? Just forward of the FSB?


I had the whole barrel dimpled. Not really for looks since you don't see much of the barrel past the URX rail. I just wanted to lighten it up a little.

No shit? I didn't realize he could dimple the already thin portion under the handguards???
Link Posted: 5/2/2010 6:25:42 AM EDT
[Last Edit: 5/2/2010 6:27:27 AM EDT by INTrooper4255]
My MRP after having the barrel dimpled.










Link Posted: 5/2/2010 6:38:09 AM EDT
Some more, it's pouring out, so the only option I had was the garage, so sorry about the crappy pics!




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