If you like my content and want to help support me, check out my tee spring store for some cool airsoft tech themed stuff: teespring.com/stores/theairsofttechs-merch

i've been an airsofter and diy-fixer for my airsofting-friends and myself for 13 years. only recently started looking at shimming, after having destroyed a v2. A gearbox has no secrets for me, i've seen most types of shells, mechanical/electrical triggers, etc.... i could almost asemble a gearbox blindfolded and though long, this video is saved on my computer. your way of explaining is very thorough and even for someone who's main language isnt english, very clear. no doubt on what to do and how to do it. and, as an added bonus, i showed one of my airsoft-friends this, and he shimmed his first gearbox near-perfectly! i've taken it to myself to, from now on, shim all gearboxes that i unscrew :-) in all my years i've never tried it because of the 'oh my god shimming is something that takes days!' responds. yesterday i shimmed my 11th gearbox, clocked in at 22 minutes. thanks man! a very happy airsofter from belgium

Airsoft guns are more complicated than actual firearms. Change my Mind lmao.

Long video, I know, guys, but explaining and showing how to perfectly shim a gearbox takes a long time.

I really like the methodical and almost scientific approach of your videos. Completely no-nonsense, in depth explanations of general rules and when and why they apply or don't, mythbusting sprinkled on top - it's just great! I don't mind taking 30 minutes to watch a video when it pays off. :)

I think its called a spur gear because it looks like a spur on a cowboy boot

Your videos are hands down the hold standard when it comes to working on airsoft guns. Please keep up the exceptional work.

As an undergrad in Mechanical Engineering Technology (MET.) I applaud your ability to communicate terminologies both scientific and unique-to-industry efficiently to an audience with little to zero knowledge on the topic. This is a fantastic skill to have, not to mention your mechanical ability, as well, which astounds me. You speak with experience and that in itself provides confidence when anyone goes to attempt shimming themselves. Concepts may *seem* simple to us knowledgeable in STEM subjects, but the hardest part is communicating that to customers who have *zero* knowledge and it is up to us to dumb it down enough to where it is digestible to the average consumer. You did that, sir. I applaud you ten times more for the 33 minutes and 48 seconds of free content filled with valuable information.

Dude, thank you so much. I've been hunting all over KZfaq for good, concise tech videos, and have grown tired of finding a bunch of high school kids trying to explain what they don't actually know. You are very knowledgeable and well spoken, this was incredibly helpful. I'm subscribing. Please keep the tech videos coming!!! Give us all you've got!!! And to second another poster...R-HOP....!!!!

Yes! Your long-awaited shimming tutorial! Thanks for the Christmas gift, Ryan! 😊

This is how long it needs to be for a genuinely comprehensive tutorial that is easy to follow and copy the results perfectly.

I am very greatful for this tutorial. I play airsoft for live 13 years now, and never was a tech guy myself, but I knew right person to fine tune my toys. For the next peashooter I'm planning to tune it myself finally, and shimming always worried me in such scenario. Now, with propper understanding and plain explanation, I think I'll manage to do it myself, huge thanks!

Hands down, the best video about this topic. Zero nonsense, it's length didn't bother me at all, because is profound and understanding something always pays off... bravo!

Hi, I just wanted to say thanks for these videos, I just put together my first V3 gearbox while watching at least 5 of your tutorials. It works flawlessly. You're awesome!

Really appreciate this video. Spent an hour and a half shimming my gear box and this was my first time. And now it is running flawlessly. I thought it was my motor but it was not shimmed properly from the manufacturer it was way too tight. I had a shim left over from the factory shims that were installed. Also was able to get a much better air seal from all your other videos. Thanks.

I still find myself coming back to this vid for refreshers.

This is, hands down the best instruction video i have ever seen on youtube, on any topic, im impressed! Im not even into airsoft, i just enjoyed your calm and precise way to show and explain.... i am a toolmaker, and not easy impressed by tech vids normally :)

Never not amazes me how much airsoft upgrading is a hobby all on its own.

Hey man you have excellent content! I work at a local Airsoft and Paintball Shop. I constantly refer customers interested in teching on AEG's to this video. Thank You for being an awesome ambassador of our sport!

Another tip, some grips may press on to bevel gear bushings. If that happens that can potentially push the pushing to far in and it may hit the sector gear. I destroyed a set of brass bushings that way, If you have steel bushings your spur gear might take the fall instead. If your grip presses onto the bushings file it down on the inside to make room for the bushings.

This video should be mandatory to watch for all AEG users. Amazing stuff!

The best video about shimming that I can find on the internet. I play gel blasters instead of bb airsoft guns, but the gel blaster gearbox has the same mechanism

This was really helpful and allowed me to fix a lot of problems on my gun. Thanks for making this video to help out new airsoft players get into teching. Everyone I've talked to out at the field or online talk about shimming like its some esoteric artform that is nigh impossible for people to do themselves and it scares a lot of people off from even attempting or looking into how to do it. You've earned my like/sub and I can't wait to dive into the rest of your content. Thanks again!

Thank you so much for making this video. I am really into airsoft and want the maximum performance from my gun. I have always wondered what shimming is and how to do it, and this video helped me so much. Now my gun is operating much better and I can tell a notable difference between before and after. Thank you so much!!!!!

started watching without even knowing what shimming even is, and now that im done watching i feel confident enough that i could do it myself. Great video!

Bro your knowledge is crazy , actually helped me so much it’s not even funny so detailed and the explaining was to a tee.

First time doing a shim job while changing the spur gear that broke in my g&g. Your video did help me alot and was clear. Thanks for the great content with straight explaning

Thank you for this awesome Tutorial. I bought an E&L AK-74 that already came with some tuning parts like nozzle, upgraded Vario piston with adjustable muzzle energy from 1,3-1,6 Joules, tuning, stainless steel tuning barrel and CNC machined Hop Up Unit. I ordered an LCT Slim Torque Motor for this airsoft and with your video I can install the motor myself and even shim it perfectly! Thank you very much for the effort!

the tech hasn’t responded to my emails, so I came searching for info on how to shim. this was so very helpful and i can’t wait to apply it to my upgrading!

I keep coming back to this because i shim like once a year. Everytime crisp gearbox like no other thank you sir!

Thanks so much for the video, and for the entire channel. Defitently some of the best Airsoft tech totrials I've seen in a while. Keep it up!

Thanks to your vids man !! I opened my gear box the first time and everything went perfectly!! Thanks again

by far the best video on how to shims... really going to use this method!

Thanks brother, I took my gear box apart and step by step your instructions. My gun preforms so much better.. mad props bud. BTW, that was my first time shimming. Took me 1 hour.

Take a shot of vodka for every time he says apparatus and variable.

More than an awesome job. Hands down, the best on youtube. Great communication and detail. Appreciate it!

Great video, i want to upgrade my internals on my G&G ump. I was worried at first because of shimming, but you put my mind at rest. Thank you for taking the time to make such a detailed video, thumbs up.

Extremely informative video dude, well done. You just taught me a great deal in 30 minutes. Very, very much appreciated.

Dude, this is such a great and informative demonstration! I've been doin it for years and I still learned a bunch from you. Thanks for sharing

Definitely the best shimming guide I've ever seen. Keep up the good work!

Yours is the third video I watched on shimming a gearbox and bro you nailed it! Completely understand it great job keep it going

the best video so far on how to shim a gearbox, now my gearbox runs smooth as silk, thx :)

Great video, noob here managed to shim my new retro box mint. well explained and all made perfect sense so gained a good understanding of the you work in the order that you do.

2021 and I am learning from you. That’s the best part of it.

Although quite lengthy, this is a very informative and highly appreciated video. Thank you mate :)

I absolutely LOVE how extensive and comprehensive this video is!! I would be extremely happy if you would follow fashion for all other tech subjects like, shimming!!

Great video! Thank you I was able to shim my gearbox successfully with this as a guide

Damn YOU! Now I'm going to have to take apart some of my guns again... Thanks for the great video!

Than you so much I’m about to do my first ground up build and this and more of your videos are going to help so much

I always heard people say it's some kind of sorcery, but seeing exactly how it is to be shimmed, it doesn't seem bad at all. I'm giving this a go on some replicas! Thanks for the video man! Subscribed.

thanks for all the tutorials man! :)

Yay!!!!!!! He's back!

Your channel is fantastic, mate! Thanks so much for all the great info!!

5 years later and still going strong. My only complaint is that this is an instruction on shimming and you never showed any shimming. You showed before and after. You said whether it was top or bottom of the gear but it would have been nice to just show the placement so there is no confusion. Other than that well done and explained.

Thank You for making this video! You explained it very well and I'll be trying this soon! Hopefully as i get better and can help my friends fix their guns shims as well!

Very helpful, very detailed. Im a mechanic and the procedure is kind of like adjusting a differential so i went with that logic and it worked wonders!

Jesus Christ, you’re an amazing teacher.

Man this dudes got his shit in order

Best explanation of how to shim on KZfaq

Great video and really well explained. I'm starting to progress more into modifying my gear myself and this video is really helpful! :) I subscribed right away. Thanks!

Thanks for this video. I've successfully shinmed my first gearbox. (ICS CXP Split). You give lots of extra info and advice. You are easy to follow too. Thank you.

A fine video. Thank you for taking the time to make it and share it.

Hey Mr TaT you make all of this seem easy, having wrecked a gear box or two I know it is anything BUT thaty! You know what yu are talking about & your knowledge is spot on, I'm thinking unless you own the company or something you might be somewhat under-employed - expertise and the ability to convey ditto are rare skills and priceless, it (ALMOST) makes we want to tear into some of mine (S & T sterling, TM, Well and JG Scorp, Matrix MP40, Snow wolf M1938, Cyma AK74 U.) and the sensible part of me says leave it alone until something breaks and I cannot get out of fixing it

Finally!! I've been waiting AGES for a new one from you man.

Thank you. Helps me on my Techie journey.

Would you ever consider doing a how to r hop? Not sure how difficult a video that would be to make

This is fucking AWESOME. You are a damn saint for putting all this great information on the web. THANK YOU for your efforts. They are appreciated.

Wow this Crazy Sound ❤️

Thank you for this.. you explanation on your shim method is straight forward and to the tee.. thank you

Finally a new video!!!

good thing these tutorials are here

don't apologize, its beautiful explanation

Now i am motivated enough to shim my new g&g mp5 a4 gearbox after rewiring it

I didn’t know how to shim before this video and now I do thank you brother

One of the best video guide on shimming, thanks!

Gonna come back to this video when my JG AKS-74U arrives.

Man you did an excellent job. Two thumbs up.

That's right about sound shimming! I use SHS 100:300 Ultra Torque Up Gears with SHS High Tourque Motor. I shimmed this setup perfectly, but sounds of this setup is very, ekhm... Interesting. It's sounds really strange, but the most important - 500 FPS and no any issues. Thank you for this brilliant tutorial.

Great video. Excellent explanation of the why, and how things work, not just what to do.

Two thumbs up mate, great video, super informative and very clearly explained. Subscribed!

That full auto is really something!

Yep great video. Experienced with airsoft but didn't understand shimming or its purpose. Now I do, thanks.

Thanks for taking the time to explain it to us. If you take time to listen one might learn lol

Ive tried shimming and it took me literally 6 hours. I was taking my time and paying very close attention to what i was doing, following all the rules jn this video. I also made sure each gear had 60 to 70% contact and it was flawless, i could spin it freely when screwed together. The gun over heated after a couple shots tho, and my pinion is fixed into the bevel gear so it meshes perfectly together, not to far in not to far out. Idk. Shimming is the only thing keepin me from teching on my guns.

Look who's back!

Still the best HOW TO! Greet‘s from Germany

dude great work man so inspiring loved it!

thx for all knowledge you show here ... i will use this to shim my V3 mechbox at UAR after i get all parts to upgrade (NBU, 100:300 gears, INFINITY CNC U-18000 motor and shiming washers of course :D )

Great video getting ready to tear open my first gear box on lancer gen 2

Thank you! This guide helped me a lot! It's the best shimming guide in YT.

Very nice video. It is not to long at all. But M4 and AK platforms are the most common replicas we all use. I would really like to see how shimming and other tech stuff looks like on some of the other platforms,and what are the compatibility issues. Like say Version 1 gearbox,or version 6,or maybe M249 or SVD gearbox. I know you have probably done most of the known stuff out there.

Haven’t ever even touched an air soft gun. Still watched the whole thing.👍

It’s a long video but well worth it thanks man

Great video. Should mention proper lubricants recommended as well. I've seen all kinds of weird stuff in client guns, and sometimes nothing at all.

Perfect sound.

could you also upload a video where you show how to glue/epoxy the bushings/bearings properly?

I was suprised to see how young you are! Very sound engineering know how!

Even to this day i still go back and watch this when it's time to fix the gun

Amazing video dude. You are the best airsoft tech on youtube. You explain stuff flawlessly. Thank you. One question ! I have a fair amount of experience myself of working on guns and gearboxes, but now I want to do a DSG build. I want to use PDI 375mm 6.08 steel barrel. I'm looking for best trigger response (useing ASCU gen 4 and Super Shooter 14:1 gears) My question is about the barrel. Can I use such "long" barrel in DSG build ? Some say that it must be as short as 229 mm. Will be glad if you response. Cheers

man, that gun sounds amazing!!!