Nekkid AK74 getting screwed..

[fishingolf]

I apologize to eveyone for that "retarded" comment. It was uncalled for.

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[fishingolf]

The only reason i deleted it was i didnt have time to go into a screw build debate and an ar stock loading the receiver differently than an ak stock..thats the only reason. I agree its not a traditional ak. I never intended it to be.thus the acrew build with all the diff parts..

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[kalibeltfeeder]

At the risk of sounding like a newb.. Is that pretty common the bolt hold open on the selector like you had? Same with the charging handle adapter thing that you had on there? Where'd you get that?

Screw those screw haters!

[fishingolf]

I bought the charging handle from ebay i think and for the bolt hold open, i just modified the surplus safety lever that it came with.

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[ElDub1950]

Oh, man!! No one quoted the original?? You guys are slipping. Looks like it must have been good

[gogohopper]

me be retarded, and I get off ended. .

[fishingolf]

Oh, man!! No one quoted the original?? You guys are slipping. Looks like it must have been good

U didnt miss anything. I just used that word too loosely. I posted a pic of my featureless ak. There a few who made the comments about it being a screw build and ar parts were not meant for aks....i did not want to turn it into a debate so i deleted my original post. Peoples feelings got hurt and started calling me out. I replied and loosely and inappropriately called those "retarded". I made an apology for it and that's it.

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[kcstott]

Where your math showing why an ar15 loads up an ak stock more?

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Well if you look at how those adapters are made it's usually two little screws holding a nut to the trunnion. drop the AK on the carpet and the mount would fail

[kcstott]

The only reason i deleted it was i didnt have time to go into a screw build debate and an ar stock loading the receiver differently than an ak stock..thats the only reason. I agree its not a traditional ak. I never intended it to be.thus the acrew build with all the diff parts..

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there is nothing to debate on a screw build, Screw builds are junk. the gun wasn't designed to be held together by screws. screws don't have anywhere near the strength of rivets in shear. I won't even go into tradition. I will just tell you why screws will fail faster then a rivet. but you don't want to hear it so fine.

[fishingolf]

there is nothing to debate on a screw build, Screw builds are junk. the gun wasn't designed to be held together by screws. screws don't have anywhere near the strength of rivets in shear. I won't even go into tradition. I will just tell you why screws will fail faster then a rivet. but you don't want to hear it so fine.

We use screws before before rivets in aerospace all the time. We only use rivets its a blind application. Rivets are only capable in shear and suck for tension applications. As for screws tbey arw good for both. In the application of the ak i am pretty sure rivets were only used for manufacturing efficiency. If you want technical numbers i will gladly provide them to you. With that being said it is possible that the rivets in ak might be better in shear capability than tapco screw due the tapco screw being of a lesser diameter using the min thread diameter area. But will it fail? I know it wont. Will it back off? Not if a proper threadlock and torque is used. As for the stock issue if i am using the mil spec rear trunnion what diff does it make that an ar or ak stock is attached to it. Show me your numbers besides just anecdotal info. You may be right..i would just like to see some numbers to back it up.

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[fishingolf]

Well if you look at how those adapters are made it's usually two little screws holding a nut to the trunnion. drop the AK on the carpet and the mount would fail

My adapter mounts to the rear trunion the same way the original stock does.

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[kcstott]

We use screws before before rivets in aerospace all the time. We only use rivets its a blind application. Rivets are only capable in shear and suck for tension applications. As for screws tbey arw good for both. In the application of the ak i am pretty sure rivets were only used for manufacturing efficiency. If you want technical numbers i will gladly provide them to you. With that being said it is possible that the rivets in ak might be better in shear capability than tapco screw due the tapco screw being of a lesser diameter using the min thread diameter area. But will it fail? I know it wont. Will it back off? Not if a proper threadlock and torque is used. As for the stock issue if i am using the mil spec rear trunnion what diff does it make that an ar or ak stock is attached to it. Show me your numbers besides just anecdotal info. You may be right..i would just like to see some numbers to back it up.

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Don't bother son, I already "Published" the "Numbers" here about four or five years ago. I also commented on why screw builds should not be done. especially on the front trunnion. But if you're so smart you'll figure it out.

Run your strength number in real world conditions not book numbers. Base your strength off of thread engagement and the lack there of and the lack of known strength characteristics of the trunnion material.

then you'll see why the rivet is better. But I thought you didn't want to debate this. so why are you. Build your rifle how ever you like. just don't complain when the screws rattle loose and you damage your weapon.

See thats just one advantage a rivet has over a screw, A properly installed rivet will not loosen over time due to vibration and flex of the structural members. Screws tend to fall out in the same application. One of the reasons you aircraft guys have to wire every screw in place. You don't see holes drilled in rivets to for FOD prevention. If a rivet loosens up it was due to correct installation or exceeding the load forces it was designed for. But this is your rifle and I'm simply using it as an example of how others should not complete their build. Not to mention screws look like crap, and do take away from the traditional look. But since you magpul'ed the crap out of that thing well it don't matter much no does it.

So you may think I'm a retard But i'm actually a pretty smart guy as you seem to be as well. you just have your opinion and I have mine. You were made fun of because you didn't leave the original post up. Kinda like a kid getting pissed and taking he toys and going home, This is a public forum and you'll get every opinion under the sun. AK guys are for the most part rigid in tradition. Me not so much. but if i built an AK I build it correctly. how it was meant to be built. not reinventing the wheel because I don't have tools to do it right.

Well at least you didn't weld it

[fishingolf]

I never i doubted your intelligence nor question your experience. That retarde comment was at he presumptive statements made about why i deleted it which i apologized fir. I agree with your post above. Well atleast most of it. I think both fasteners and rivets . have each have a place in , the tral world. I run book numbers AND then test it to make i got it right. I have designed and tested lots of structure. Yes fasteners do need min thread engagement for a full load capability but only for tension applications. Fasteners do need lock wires to prevent possible fod if there isnt a positive locking feature on it meaning both a patch lock and preload. Yes Rivets dont but much more rivets are typically required in place of these higher strength fasteners and are mainly used where only shear is required. On spacecraft we only use rivets to hold in nutplates. The very nutplates used for the threaded fastener.

Btw my job is real world numbers. I am given numbers by the loads group. I run my calcs and pick the material and size it appropriately. I then devise a structural test to proof it. So i do know a thing or two about mechanics.

There is a time and a place for rivets and fasteners. I agree they are both good but neither is better than the other.

As for removing the post, i deleted it for this exact reason. I did not want to spend a bunch of time debating it as i am now. Its a part of my stubborness..

I wish i had.

I like my AK , "screw" traditionalism...went thru a 1000 rds and no problems...if i ever have issues with the screws, maybe then ill rivet it.

I will do a search for the numbers you posted.

Btw, Merry Christmas. It has been interesting.

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[fishingolf]

If you are willing to lend me out your rivet tools i will build it "properly".

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[kcstott]

If you are willing to lend me out your rivet tools i will build it "properly".

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Well Being your typical machinist I don't loan tools. But you can look up a plinker jig and fab one up out of $20 worth of materials from home depot.

I made every tool i own for doing AK's and most of the tools for AR's and bolt rifle work. give it a shot you might surprise yourself.