Bored of lame tool reviews? Meet DeWalt's 12 Amp Grinder part A
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- Опубликовано: 8 сен 2024
- Update and Errata Part B here: • Bored of lame tool rev...
When it comes to grinders, I've always been a Makita man. But maybe this new Dewalt will change my mind. We'll teardown this grinder and have a close look at the build quality. This is a very in-depth review and test so I broke the vid into two parts. I'll post part B next Sunday.
Enjoy teardowns? Me too, but they get pricey. Please consider throwing a few bucks into the hat and help me make these vids.
/ ave
Weight of DeWalt vs Makita: 2:35
Strange Gear Grease: 4:45
Moly Di-Sulfide under the microscope: 6:30
Spiral bevel gear: 8:35
Mindblowing Pinion Gear Mystery: 13:30
Crappy Brush Holders: 17:00
Motor Rotor: 19:00
Sex on a stick! Field winding: 23:30
Glass impregnated plastic housing: 25:00
"It's about 3.1 kg's, which if I'm not mistaken is about 200 pounds." I fucking died.
i thought i heard him wrong lmao
I died too lol
fightpsas I find the imperial units much easier to have a convenient feel for. Metric's millimeters is easier than using x/16s, and 1 centigrade is too coarse for thermostats.; Twelve parts per unit "foot" is inconvenient though. My 2¢
That's Canadian pounds
Still the funniest thing that happened in 2015
I don't know how RUclips got me here, but when ol' boy busted out a microscope I knew the algorithm had me dialed in.
Oh boy if you're just discovering AvE you're gonna have a grand time
Welcome to the party my friend, beers are in the kitchen
@@Poverty-PonyTony Adulting pop-cans my friend
@@sfurules I just found this today from a smartereveryday video and this is.... An experience.
@@tullyswimmer58 and @sfurules ...wait till you watch his more recent vijeos
"You're holding a horsepower and a half in your hand for hours at a time" I'll kindly request you stop looking in my window sir!
*_brony_*
What you do with your ponies is your business, but they don't belong in your bedroom.
there's no cock like horse cock
Erik BIG FACTS
@@documetricsinc.6135 I've got to go down to the airport. You can let yourself out the back door. There's juice in the refrigerator.
This guy is honestly one of the best channels I've come accross. Knowledge of Engineering and the quick maths that he does is amazing. Absolute Genius
Hey Bolter , I just want you to know that I worked in a factory as an electrician/ automation Tech and I have learned more from you and your Channel then I have in 20 years of working in an industrial Arena. You do such a good job of explaining pumps Hydraulics Motors even going into specifics about how things work down to the bearings that I have literally taken what I learned from your videos and apply them in my own job. I feel confident about taking things apart at work were before I was worried I couldn't get them back together again. You've translated a lot of industrial jargon that we all pretend to know what they are but are too embarrassed to raise our hand to ask what the hell they really talking about. I love your channel and I've shared you many times on Facebook. God bless you and thank you for keeping it real. you always seem to know exactly what the working man needs to hear. Oh yeah, you're funny as hell!
Cool man, glad you can join me for a laugh in the shop!
Coming from a background of 12 years experience watching youtube videos with various certificates in liking, subscribing and sharing the content i felt it necessary to comment on this one.
I am relatively new to the channel but thoroughly enjoy every new video and i am continuing to wade my way through the past ones. Your content is like no other and its really great to see such a combination of information and humour with the right amount of crazy.
Keep up the great work mate.
Well said!!! Fully agree!!
Look no further, bean hear for year and never left. You won't find any better.
A true rarity on YT that's for sure
Dude know everything and I made these gears in 1984
2'41 kg is about 200 pound 2:47
Meh
dude, i just kinda stumbled across you're vids and I am by know means an engineer...however I am sooo intrigued by all your knowledge of this stuff. Im just a humble union carpenter and saw you reviewing some tools i was interested in getting and now i cant seem to stop watching your vids... your canadian accent, your sense of humor, your depth of knowledge...congrats dude! you just got yourself another subscriber :) cheers from you're southern neighbor
I can’t understand 80% of what he’s talking about but this is my favorite channel and I don’t know why.
Diddly umptious. Lol
Keep listening and he'll eventually teach you. You'll learn. I still can't believe how much I know now because of this guy.
I’ve watched a few of AvE’s videos and found this one 5 years later. He’s certainly grown past the family-friendly delivery, but every video is just as high quality. NOBODY else does what he does. 👍🏻
As an electro/mechanical maintenance guy, I have loved your videos and comments. You make me laugh and think at the same time. The only thing that I haven't been able to always follow is your descriptions on the types of plastics being used. I would love to see a video on understanding the codes for plastics and the different types of composite reinforcements. keep up the great videos.
I am frequently reminded that I was not born just knowing this stuff - and so, also, perhaps in the future a video on "All You Ever Wanted to Know About Bearing Nomenclature, Specs, Dimensions, Types, Propriety and Such." Could be interesting, eh?
Joe S (AK & ID)
I agree @Lance Eastman. He asked for suggestons & i think you've given a good one. 👍
I like turtles
People generally don't know plastics, I wouldn't be sure he's that different 😜
I don't do anything with machining but I love your style of humor.
I used to work for a specialty grease lubricant company where we did a good deal of work with design for life power tools, etc, developing tailor-made formulations....applications covered just about everything under the sun. Our technical director at the time now has his own lab and is the best in the business. If you are interested in some analysis on the lubricant chemistry, let me know and I can get some testing done for you...at least I can run it up the flag pole. The grease is normally far down on the food-chain in terms of engineering, so a thorough analysis of the base fluid, additive package, etc. can be a huge indicator of the longevity, or lack thereof (preaching to the choir), your viewers can expect from a tool. The first thing I was always asking about when talking to design engineers was what their warranty issues were. Great vids by the way. Keep it up. The grease in the Dewalt grinder has me very curious even a year and a half after you made this video. The lack of lube on gears is a disaster.
What commercially available grease would you recommend for repacking these angled gears?
Holy..Crap. I have not know what a review was before this teardown.
The difference between Makita and Dewalt, is a matter of a pinion...
Ba dum tsh
What kind of a pinion- Gear maybe?
I like that.... catchy but true lol
Thats your opinion.
@@MrAkwaholic WhoooosH!
Boy, this was like stepping in to a time machine. Is it just me or is it weird listening to AvE speak boring old English, as opposed to AvE-speak?
Did you notice how he opened the box?
Yes, his style is quite different now. He also doesn't plead for video shares anymore.
Go back a few more years before this one and he sounds like a meek little girl. High pitched voice, talking in hushed tones, nervous laughter.. It's hilarious watching those old videos knowing what he's like now.
And not recognizing a sintered powdered metal gear?? Our little AvE has grown so much!!
And he closes with keep my what on the what?
The math around 16:00 blew my mind. I'm okay at math, but ignorant when it comes to the equations of physics and engineering. I was impressed that he seemed to just do it on the fly. "Dead Reckoning" as he called it.
Dead Reckoning is just "rough estimation" of position, it`s a nautical term, you use known values to calculate/estimate position by using say landmarks, time and direction away a certain island etc.
The OG navigators were smart AF when it came to that stuff, not to mention the dudes who made maps etc back then.
just wish u guys used the metric system like the 7.2 Billion other people on the planet
No grease on the gears because of the positioning. When they assemble it they are looking for speed so they use a ceiling hung air grease gun like we had in the shop. They squirt some in the case and install clean gears and out the door it goes. They don't expect a schmoo like you to be discombobulating it before it gets used ... in other words once it starts to get used the heat and gravity will bring the grease in contact with the wear surfaces. This may even be on purpose to let the metal have a short wear-in period & the steel could (quite a stretch but a decent thought) even be hardened & impregnated by the hot grease hitting it later. They're DeWalt and with their custom grease blend this makes some plausible sense or like I first said it could just be an EZ manufacturing process. Excellent sticktuitiveness AveMan.
8:41 "That's a nice looking gear" -- there is no hope for us. No hope! Hide the sheep!
oh god, my belly is laughing like a bowlful of jelly, thanks....
at just before 10ish... I thought that roughness in your scope looked familiar to when I have oil hardened steel tools or knives. sandblasting would be an excellent way to clean away excess burr material that can get into grease and bearings and shorten the life of the tool. Apples n oranges like you said. Dewalt is american engineered isn't it?
I don't use these grinders, too small for us woodworkers and when I weld or need to cut lots of metal I prefer the depth of cut advanatge of circular saw and its 7 inch blade.
Shouldn't boggle your mind about no keyway because at that point it is a high rpm motor with relatively low torque until it passes the hypoid gear and is reduced.
I think the rubber bushing at the skateboard bearing end of the motor is to keep some constant friction against the bearing thus eliminating the possibility of the gear rotating and burning its way out of the case (maybe they added this from an earlier prototyped model) and also it is yet another layer of dust/dirt protection against the bearing. It is these little micro differences that make the difference between a tool that fails soon and one that fails later. And remember this tool is preferred by metalworkers and also very often installers of ceramic tile & stonework... the latter two being so abrasive and different that they even have their own set of blades (though my metal cutting abrasive blade works on stone and vice versa... might be some wear difference but I can't imagine a whole lot unless it is just another marketing gimmick because I buy my metal cutting blades by the 10pk. When I go to town I wear them out pretty fast. )
22:59 the plastic is not there so much for the sealed bearing as it is vice versa...I've rebuilt/repaired a lot of electric motors from vacuum cleaners to jet pumps and what happens here is this scenario:
23:30 The grease from the bearing (and the bearing might not fail but the seal does!) gets on the copper commutator and then you get a bad burning smell the housewife normally doesn't prefer near her couch & eventually the electrical connection to the copper commutator weakens the whole motor performance. Add a smidge of household dust and/or wood dust (yeah, I'm a woodworker, deal with it! ) and you have a very quick recipe for a failure unless it is discontinued use and some one like me gets at it. I usually clean them with solvent and prefer 1000 grit wet/dry sandpaper to resurface the commutator and then the whole thing works better than brand new. ( and why I can afford to have like 6 vacuums laying around. People throw out shit for the lameness of reasons and if it is a good brand or expensive unit it is worth my time (and curiousity like you don't get that) to discombobulate the thing and bob's my uncle.)
Obviously the spade lug on the brush is for rebuilding speed. Most of the brushes have a pole within them. So if the user doesn't destroy the commutator, simply pop that cover and the commutator could be resurfaced and then a new brush installed and you are back in business.
What would confirm that even more is either to run the tool til the brush fails or get a set of brushes and cut it in half and see if they now employ a non-destructive wear indicator. They used to be iron poles which if not stopped almost immediately will destroy the commutator by ripping it to shreds.
I would hope by now they have done more like disc brakes where that piece of sheet steel rubs and makes a godawful sound BEFORE the user gets to the brake pads' rivets and destroys the rotor thus needing a new rotor. Though most these days dont last anyway because they're thin, often crossdrilled(warp) because it obviously just makes better engineering sense to have something fail to a more repairable state. (a lesser version of fail-safe which we were taught in electronics college by our military veteran professors who knew lives can be on the line in their designs.)
BTW I have no engineering experience but I do work on shit. In real life. With my hands & I killed/broke one big bertha by pounding on it while I replaced the whole rear suspension of my ford taurus & compressed the mcpherson strut springs by hand myself. If you ever attempt a pair of those you'll see its about 3 times the muscle needed than to use your 100 ton punch. I now bought a pipe vise and I really should buy an old fashioned post vise like blacksmiths use (love Roy Underhill's show The Woodwrights shop.. watch it every Saturday! He is one of the ONLY woodworkers to be allowed to work on Thomas Jefferson's Thames House BTW. Some of us refer to him as 'Saint' Roy because with a woodworking tool in his hand he can do no wrong. You're pretty close to being a saint in the metal/electrical engineering depts. Excellent quality vids. YT has now almost totally replaced my TV watching BTW.) and I really passionately love to ramble about all this shit. Bob's my Uncle!
Take it apart after some use and tell us if the grease magically migrated to the gears. Inquiring minds wanna know! I'm rooting for a yes.
Me Too
I'm thinking once it warms up from use the grease will migrate.
"well my friend this is a HIGH PRODUCTION hobby shop...' quality my man!
I'm a canadian rig welder, i spend a GOOD majority of my day behind a grinder. Dewalt MADE kick ass grinders, easily on par with makita's... but the new 2018 Dewalts that are out, are nothing short of complete junk! Get your hands on a new one with the E-clutch or anti-kick back nonsense and tear one apart! They dont run on my lincoln ranger 305, but luckily work on my miller pipe pro 350. Back to makita for me!
thanks for the heads up!
Did you seriously just start your comment with your credentials after watching the video?
@@phillipvorster3718 lmao...
@@phillipvorster3718 he did, but he also only stated things that can be verified instead of the "just trust me because of credentials".
@@phillipvorster3718 nope! Just his perspective's orientation: meaning: "I use these things daily etc."
13.42
I think that is a clutch in. If they had a key way it would not slip if it jammed. Sometimes you need a weak link
yes sir
@@arden6035 i was going to comment this but you beat me to it. i agree. alot of grabbing force and has to slip somewhere.
how to keep g forces on the motor acceptable in case of a hard lockup :)
Nothing a bit of retaining compound won’t fix....
I thought this was designed so my wrist would fail upon locking up. Hows my doctor supposed to feed his seven kids now?!
I'm sorry I can't share this, everyone I know all ready thinks I'm crazy and this would seal the cake
+Jeff Schefke hahaha
+Jeff Schefke funny but actually true xD
Seal the deal or take the cake? Ahh well I guess seal the cake works too.
Take that as a compliment
@@paulraymond1804 He did say all his friends think he's crazy already anyhow. I'm figuring that "sealing the cake" line, hints at why they may think this. ;-)
You've raised the bar for those that would aspire to do tool reviews.
The theory of eliminating the keyway, other than the obvious points you make, is the extra balance of the whole shaft. Incase some of the observers don't realize that vibration is the killer of all mechanical devices. DeWalt is , in my experience, worth the price so far. I have tortured them for years. Good video. ( Very rare in the ocean of fake reviews by unqualified "creators" ) ... Thank you sir.
6 years ago I watched this exact video and was hooked. Watched all before and since.
*Playing a casual game of youtube. Come across this video.*:
Guy in video: "6001 bearing which we all know the centre of is only a 12mm id"
Me pffft, yeah of course. Bunch of hacks those DeWalt people."
😏😝
I know this video is old, but I just wanted to say that we use the dewalt 4" grinders at my job for production work. I have enough broken ones for spare parts that I have started up a little tool hospital for them. Even the 4" version has the nice metal gears in the right angle head. Usually damage to the cord is what kills them, followed by the brushes being worn down to the spring, which will score the rotor. Replace the brushes, blow some air through to spin the rotor and polish with scotchbrite, and you're in business. I've only ever had one that failed catastrophically. It shorted across the copper coils on the rotor, and you could see a bright arc as it rapidly welded itself together. We got a fein 4" grinder in the other day and I opened it up. Nicer electric components over all: heavier gage wire everywhere, higher class bearings, etc. Better design for maintenance labeled switch terminals, simplified cable routing (cable routing inside the 4" dewalt is a nightmare), easier access for tools. The nicer bearings make it run much more smoothly than the dewalt which is important for production work. Even so, I still prefer the ole dewalts, as I like the flappy paddle on/off switch dealie, and I don't like a complicated system to get discs on and off. On the dewalt one, I just turn the stacked disk and washer thing onto the shaft by hand, and that's enough. The fein has 2 washer things (the back one always falls off), and the button to lock the shaft is in a dumb place.
It's funny to go back in time and look at all these comments that are dumbfounded at good old uncle Bumblefuck's vijayos.
I bought a DeWalt 4.5 inch grinder several years ago, brought it home and put it to use, after 5 minutes it was so hot I couldn't hold on to it. I took the cap off over the gears, NO grease on the gears, a little dab of grease on the inside of the cap...but not anywhere near the gears. Took it back and exchanged it for a new one. When I got it home took the cap off the gears....same thing a little dab of grease on the underside of the cap and not on the gears. I took a screwdriver and spread the grease on the gears. I am still using the grinder still works good. I used it hard too, ran a welding shop. Good review, excellent videos.
I love dewalt gear. They do great engineering.
This is by far the best review I've ever seen. This is how reviews should be done 'always'.
this guy and Project Farm.
I purchased this for the purpose of cutting patio stones . I have a 600 sq ft area i had to cover with intricate cuts that i had to cut through the stones from both sides due to the 1 3/4 in depth with the 5 in diamond blade it would do before it would bottom out on the housing. The stones are 2 in thick.I watched this teardown before the purchase. i noticed as you did the lack of dispersion of lube so as you said mabey the heat will dissapate the lube. So i ran it with no load pointed down for 20 min and monitored it with a IR thermometer.At the start temp climbed to 170 f then dropped to 150 f at the business end then let it cool down over night. After two more cycles had the temp down to 120f . lube dispersion or gear lap in or combo who knows. I ran thing roughly 2 hrs with it sucking in cement dust and it still chooches. Felt bad for it so i blew it out with compressed air. Neighbours did not like the desert storm. Anyways there she sits on the shelf a necessity for the job at hand but an other tool i had an excuse to buy.
"When somebody starts a comment with their credentials they're a goof"
Words to live by.
Says the guy with a name that means one who is a practitioner of taverns.
As an expert short pole polisher, I find your comment wildly offensive.
tavernmancer as an expert in underwater basket weaving I concur with your assertion!
In my many years as a RUclips commentator I'll take the moniker, goof...fair enough.
I'd like to see you build a Frankenstein tool out of all the best parts from other tools.
Steven Horne Awesome, if impracticable, idea!
Simply FIX the bad parts of a tool and re assemble.
What a great idea! I bet he is secretly mulling it.
Pro tip for the home gamers, zip tie the pin spanner to the plug end of the cable. You never loose it and you now disconnect the power before stuffing around on the finger mangling end.
in the 10 years I have been watching RUclips videos, this is the only channel I have subscribed to. these are not your typica l boring how to videos!! great work. thanks for the entertaining info.
"Be in the moment. (pause) Yeah, so where was I." Man, I laughed out loud at that one! But I gotta tell ya AvE, you are the best shop teacher I ever saw. Bar none. What you're teaching is how to think. That's big. That's the key. Cheers, mate.
Diggin the metric to cartoon units conversions.
I worked at home depot and I would always recommend that people pick up and handle the tool. Most complaints I would get were of discomfort.
*2 giggities in my post
As I watched, I was thinking the same thing! One of the main propellants of the Japanese takeover of the tool market was the attention they paid to the ergonomics of their tools. Better fit in the hand, better balance, better trigger placement, less discomfort!
I have never grown tired of this. I have actually forgotten my own child's name, but I rarely forget a moment of these things. Bless you, man!
This is my new favorite channel on RUclips. I genuinely learn something every time I watch. You casually mention concepts most of us have only encountered in a classroom. The way you effortlessly apply those concepts to stuff we all have in the workshop is fascinating. Brilliant work.
Maybe the keyless pinion is meant to act as a slipper clutch for shock protection in case you bind it up trying to reach something in a corner.
I've had cheap drills jam drilling a hole in steel and jam so fast it stripped the gear inside, could be this potential slip ability would prevent such a thing if the disk grinder suddenly got jammed in a slot being cleaned up.
That's what I was saying.
I definitely agree with you here.. I immediately thought that it was for protection of over torque, and I'm sticking with that.
I'm with you guys. I feel like it's a safety design
Obsidianiron
I was using a fairly slow 1/2" drill with a multi spur bit and the damn bit jammed and the drill had so much torque and spun around, it put so much force on my wrist before it stopped I had the feeling a little more would have broken it. I had the secondary handle attached too, using both hands.
I didn't remember any of those numbers
3000, 1/2 and 2.
Oxatolla .2*
what numbers?
I dint come here for no maths
@@MAGAMAN awesome!
22:40 the air flows from back to front (just look, there's a turbine behind the pinion!), so they're actually protecting the commutator from abrassive/conductive particles flying straight in at the brush to burr contact level. And the elastomeric bushing around the bearing is just to reduce kicks and vibration, although when it wears out and the rotor touches the stator....
I repaired all these tools for 2 years with a gentleman who did it for years, and this channel has its act together.
"Keep your stick on the ice"
Ah, I see you are a man of culture as well.
Hey AvE, can you make a 20-30 minute video on molybdenum disulfide? :D
Opt for the superior Tungsten Disulfide
"Been a long time since i have done hot knives" Lmao, nothing like creamy taste and exquisite aroma of black Afghani.
My guess for the extra rubber is vibration isolation. Tool makers are more aware of nerve damage from repetitive use and are taking steps to prevent it in professional tooling.
Good to come back and re-watch some of the golden oldies. It's amazing to see how much has changed in the EoD in the last lustrum.
I've recently discovered this channel. I started watching because I wanted to know what went into the tools I was buying, but I kept watching because of your linguistic jiu jitsu. But now, I'm just impressed! Hope you can keep the videos coming.
Whoa, I dunno how I ended up here, but this is right up my alley. Very in-depth, great review!
man your language evolved so much in a few years. love it still. thank you for the videos. i will take a welding class in the near future i hope...
WHY?
Why can't THIS GUY work at the home improvement store?
When I have questions, THIS is the guy I want. Not those jackasses.
On second thought, If he worked there...I'd never leave. I can listen to him spit out specs all day.
Homeless Despot couldn't pay this guy enough to make him stuck around lol
Points out all possible production and design faults. Just what Home Depot needs! :^>
Should get a acting gig with em
don't think this guy would like to work for minimum wage or there and about.
You’d have to leave because he’ll have sold you every good tool in the damn store by then😭
When I was six all the way up till was about 12-13 I would take apart every single thing I could get my hands on. From toys to remotes and phones. I learned more from doing that then I ever did from a book or the internet it's like you do an advanced adult version of the same thing lol. You do an excellent job of going into great detail more so then any other source available. Great content and I tell lots of people to check you out. Keep it up
soon man will be able to take apart their pp
I think this video is how I found your channel. I immediately watched like 3 other videos and subbed. Been here ever since. I didn't realize it'd been like 5 years until this came back into my feed.
I appreciate the thoroughness of this classic AvE vid.
Your intelligence is absolutely amazing. Well done sir.
***** hell we all have our "spəcial" moments in the shop lol
der 5 die und das ist
I enjoyed your video, I love tools, use them all the time and I think more products not just tools need to be torn apart and properly tested like this
. Most times we get sucked into a product due to fancy marketing or false reviews from paid reviewers with biased options. Keep up the great work!
"pay attention because we are going to check out the marketing bullshit"
"ten thousands rip-ums"
"ah a grine-ing disk, the ones that come with the grinder are obviously shit"
"about three point one kgs which if i'm not mistaken is about two hundred pounds"
The review is great but the unintentional humor in his speech makes it infinitely better. Well done.
The more I watch Ave's tear down videos the more I think how many more working tools my dad would have had if we'd had these 40 years ago.
Now T-H-I-S is the type of review I like. Gonna keep my eye on your vids for sure! You have a winning recipe. You are very knowledgeable, funny and very to the point!! Love it!!
***** Oh, and yes.... its time you switch over to Metric.... he he he
The best review I have ever seen!
Now there is no black box left.
You see what you get.
High quality stator and rotor with sufficient diameter copper wire.
And above all epoxy coating so that the wires do not rub against each other.
Hopefully this is not done because the electrical windings are loose and sloppy applied.
The gear transmission is bad in my eyes.
The tooth surface is too rough and dry because the lubrication is thrown off by the centrifugal force.
Metal to metal contact => Galling, vibrations and noise,
I am Dutch and my English is via Google.translate
At 14:22 - Holy fricken podium math master!!
About the time you started going from mm to in, I was reaching for my HP-48.
The keyless design yet with the loose coupling between the pinion and shaft is indeed very interesting. Adding to this is that normally the coupling between the inner ring of the ball bearing and the shaft does not have to be so tight to transmit torque!
Very smart and funny guy. I'm just an old DIY gal wanting to grind even older paint off my house. A mechanics dummy, I'm tired of buying tools that don't really do the job so this video helped me understand and make a good decision! Thank you !!!!!!
Really enjoy your level of clever detail. All the best from cold Belfast.
“I tell you where they get it, out of thin air. It’s BS!” Is just the point of the stiletto of examination. Good stuff
I got 10 years of experience trolling on RUclips videos and I got to say.. you aren't leaving me with a lot of ammunition here buddy.
I love your show. I’ve been doing construction work for over 30 years and your info helps me decide which tools to purchase for my men thank you and keep doing what you do
Thanks Ray!
Now that review was in depth, so much better than listening to these construction guys talk about the newest plastic tool box system they have been using but never show you a used tool box!?! That might explain a New York minute ......
The reason why dewalt didnt use keyway is because it gives the toothwheel some slip when your cutting disk gets stuck instead ripping it apart. Funny thing is... Most Bosch and metabo tools that have that keyway either pop their gears or twist the motor shaft in half.Hitachi, Dewalt and Makita are two of the very few that actually hold up after years of abuse. Dont even tell me about bosch tools...
Yeah that was what I was thinking ... They've engineered it to fail in a safe way - that shows they've put a lot of thought into the design.
Zachary Zander Bosch grinders kill themselves
Like muscle cars that tear themselves apart when you put racing slicks on em - sometimes slip is a good thing!
We have one Makita and several Hitachi grinders, they have lasted for ever it seems, Our Bosch grinders have failed, our Dewalt grinders have had trigger issues. We keep different grinder wheels on different grinders so we dont have to change wheels all the time, well worth the investment in multiple tools.
I'm a DeWalt fan, so its interesting to see this kinda stuff, but i was more excited to see your Corb Lund sticker on your toolbox. heard em on college radio down here and they became an instant favorite.
Awesome !!
You crack me up, but you school me to.
Thanks for sharing, you just made me wish I had stayed in school a little longer.
Catch again real soon. Be blessed..
i salvaged a 5" makita. it was going to get thrown out, because the switch was busted. 30$ and 10 minutes later, and i have a wicked grinder! absolutely love it. put it through absolute hell and she's still choochin HARD! my dewilt i bought years ago only lasted about a year and a half of heavy abuse... im part n partial to the makita...
I have all the years of youtube experience, and you are quality to watch
So it seems like they really built the shit out of the rotor and field, then cut costs on other parts such as the brush holders. As of this video I'm thinking I like the Makita better. I had a Dewalt re-saw with the quick release. Every time you'd bind it, which was all the time, the blade would release on it's own. I finally fixed it by grabbing it by the plug and whipping the saw on the ground a few times until it came apart. I don't need to change a blade in ten seconds, but if I have a quick release I want to release it myself.
I absolutely love these videos. I'd love for you to test everything like this. I think manufacturers ought to send you free stuff to tear down if they're confident in the product. I've shared the video on Facebook.
I am a bit of a expert on the older dewalt grinders.the weak part was the wires to the stator.they would burn off.the brush holder plugged into the stator.I would just solder them together. also the switches, brushes, and mcords needed replaced often .the grear box and armature were almost indestructible. the variable speed module or soft start module on the newer ones are junk.they have solid state components in them and they blow out easily.I just remove them and wire around them.
and you amazingly started your comment claiming to be an expert. No years associated and no actual degree decrees but I'm curious...does that constitute a "goof"?
These reviews are just great.
Have you ever had your hands on a German made metabo? Would be interesting to see how it looks on the he inside considering the x3 price tag.
***** I just checked today and we use the German Metabos at my College. It seems you are right, unless you are subsidized you ain't buying German grinders.
5'' Makita grinder is next I assume?
***** The only reason I have a Metabo is beacause I go I know got a bunch of them from a nuclear powerplant. They safety regulations changed and they couldn't use grinders that could stay on without you holding it.
I have several hundred hours on each one of my Metabos and they still work. Worth every penny. I never actually paid for one so I really mean that. Thank christmas. Only downside is if you drop one it can get a little hairy and I hear splintered cut-off wheels is the number one cause of death in the United States....
***** if possible, check out grinders by "fein" and "flex" that is the real awesome stuff from germany :D
***** you can pick up metabo grinders on Amazon. They are comparably priced to a its competition if not just a tad more.
Great ability to be cocky yet humble at the same time. Love and plug your videos when talking to folks about such things
This grinder has a long history - the original construction was a german one under the laber ELU, this label was sold to black&decker in 1984, the production was outsourced to Italy. Later, production was outsourced again, to China.
Here in Germany you can still find many of the grinders of that type, sometimes "Made in W.-Germany", "Made in Italy" , unlabeled (China) or "Made in PRC" - always the same machine!
Gotta love some vintage AvE
by 3:00 I'm thinking this guy doesn't much like DeWalt.
And he doesn't have a very good attitude.
@@SeanBlader Attitude? Have you watched much of this channel? Look up what BOLTR stands for (AvE channel has it's own online dictionary if your inclined to look)
This guy makes RUclips worth watching anymore.
@@galenmarek8287 to
Keep watching!
I am thinking that the grease is heated when the tool is used and gradually feeds those gears. I saw that it is at the top of the gear housing as you hold it for grinding allowing gravity feeding as it warms.
I worked for where the top bearing production factories in the world, doesn't mean we're the best bearing production just means that we produce the most and we have the most bought... Our bearings seem to be mainly for CAT, GM, Ford, etc. It generally seems to be that we only make bearings that are larger. We make bearings nicknamed bracelet bearings; I've never seen such a thin bearing. We also make big beefy ones that can weigh a couple kilos. Crazy cool, I love learning about the world.
Let me tell you something sir. Your video are very educational and your honesty is even more educational. Thank you. Ive been watching your videos.for at least 2 years
You DO have the best power tool reviews that I have seen - and I been watching RUclips for 30 years! :) If you had an electron microscope and a gas chromatography machine I bet they would be even more in-depth. The gear had me wondering if it was actually cast with just the bearing surfaces machined then hardened. I can't see the need to blast a machined gear unless they are relying on the pits for retaining some lube. Like you, I have some graphite blocks that need a carbide or diamond blade to cut because it's so abrasive. Motor brushes use a finer clay binder more akin to a hard pencil lead. As for keying the gear, I think it's done so they don't have to precisely locate it on the shaft. I would think that the DeWalt version would be smoother since the pinion is rigidly located and not oscillating in and out of the teeth and bouncing against the key.
Guess I'll just have to wait for Part Duo to find out.
Love your channel.
Not to nitpick.... But can I book a trip in your time machine? The internet was barely in it's infancy 30 years ago (not to mention the average home consumer didn't have a shot at it for another 10 years or so) and streaming digital video wouldn't become a possibility until sometime after 2000....... But about that time machine.... I'd like a trip back to around 2005.... I've got a wad of cash and I know exactly which stock I'll buy..... RUclips turns 10 next month, BTW.
Hey was making a joke by piggy backing off of what AvE said about people claiming to have "30 years of experience" in certain fields and their tendencies to being "total goofs."
...now that I re-read it, my comment does seem a little less funny and a little more like trolling. Apologies all around for putting a long handle on my axe there.
Lol, no.... Pig-Latin for "fake name"..... Because when Google went all creepy stalker on us with the G+ for commenting, I decided to get all pedantic and created a RUclips-only G+. Go fig, the bastages wouldn't let me use "fake name". Heaven help us all if the google AI ever figures out pig-latin :)
....Genius....
Grinder, grinder, grinder, grinder, snow ski.... Yup Definitely a fellow Canadian.
My brother recommended that I watch your vids and that you have “coined many-a-phrase”
I've got a 20+ year old one, still works like a champ, has a hell of a lot of use and still loves work
I can see why these instructional vids are important on many levels: not only for the consumer buying it such are the manufacturers to be more honest and have greater integrity because there are people like this gentleman who are holding them to a standard of build quality similar to what United listings would do 50 years ago.
Just watched you a year or two backwards.........so different, less confident etc blah blah, still you
You still made and make me laugh a buttload with each episode. Don't ever stop
Time for another beer
Wha- who is this guy? I just found this channel and I've been watching a couple of videos, although I have to admit I barely understand what he talks about, I just watched this 30 min video, I didn't really get anything of what he said, but I'm fascinated by the amount of stuff he knows about.
Is he an engineer? or what? maybe he's just experienced, or I'm just very ignorant to a lot of stuff (of that I'm sure).
Man I wish I could disarm something one day and really understand what I'm looking at, I guess that's where I'm going to with this question.
Anyways, I'm subscribing.
he isn't speaking English it's a rare dialect of BC
And that's how he gets you hooked. Stick around you never now what he'll cooch up next!
he is an engineer for sure maybe a mechanic.
He’s an electrical engineer I’m fairly sure, he’s also mentioned he has his Doctorate Degree
wildefriend1 where does e
He mention hes got his dr
Jesus wept, the RUclips algorithm just now decides to recommend this video to me. Well, what's 5 years between friends?
We use this model of Dewalt where I work. I can say from real word experience the cord is the weakest part of the unit. I would say I replace the cord 2 - 3 times before the brushes need replacing. The gearbox has failed on a few of the units(after many years of service) but watching the guys use these things I attribute this type of failure to pushing arbor lock pin while the grinder is still spinning(the wheel nut comes off effortlessly) I have yet to see a gear failure not caused by bits of the arbor lock.
I work as a welder/fabricator for a world leading manufacturer. My company bought hundreds of Dewalt angle girders, that my area used them mainly for back-grinding. We was burning one up every week. It was back to American Made pneumatics.
I'd also happily watch another 30 minute teardown of the same tool after it's been used and abused for some arbitrary period.
***** Yup. Give it 30 years and I'll consider a DaFault.Maybe.
Great tear down!! Glad I found your site - love it.
sir, this is a youtubes
Just recently discovered your channel, and I'm enjoying it quite a bit. Your depth of knowledge and attention to detail is always impressive!
By the way, what's the make and model of that microscope? I like the design.
+Paul Buckner Search USB microscope on eBay.
+RevvedIron65 like microscope too ..check wonder what kind...check see other smart guy ask search ebay...check only 2116 choices and options. Could you throw a few more identifying details at us please.
I’ve seen basically all your videos, I must say, you’ve come a long way since this video and I seriously appreciate all of them. Even the mrs has a laugh when you’re blasting away on the big screen in the lounge when I’m watching the latest tear down. Thanks for the awesome videos mate. Greetings from South Africa soon to be in Canada 😉
LOL "Keep Your Stick on The Ice". HUGE RedGreen fan...even in TEXAS! Great commentary and in-depth analysis! WOW!
Yeah, EH🤣 first time I heard AVE give a shout out to the Red/Green show. Texas you too?!?