The Infamous Egg-Beater Impact Wrench! Testing & 10,000fps Slow-Mo
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- Опубликовано: 27 сен 2024
- Find one here: amzn.to/3l6dU72 or several types here: amzn.to/40fOKmF Our lifetime of TOOL RANKINGS torquetestchan... Go check out @singlecams and @TylerTube made a great video as well
Today we test out the Mplug, EHeelp Beetro kitchen aid egg beater style impact wrench you get in 12V emergency roadside kits to see if it's very peculiar way of impacting moves the needle and why and how it works in high speed footage.
We're being required to trim 1 min of the video out @ 7:56 due to background music copywrite claims. So there's less slow-mo shots than we originally included, sorry for that.
Dang RUclips..
Take that hammer assembly and make a Frankenstein with a powerful base motor
I see that 2cycle engine wankered some how using this hammer drive.....
@@WHSHAFT Totally doable. It just needs modified springs, so it allows the mass to spin up faster before engaging.
Really makes you wonder if impact rated sockets can still withstand that level of impact force (something else to test)
I would still enjoy seeing it with no audio or alternate narration, please add it back.
I've never seen one that works like that before. It's quite reminiscent of an elevator's overspeed governor.
I wonder if it uses the classic motor used in so many Chinese power tools - and therefore possibly replaceable if it lets the smoke out.
How is it not remotely surprising you watch these guys
we also need AvE, phillipp kaess and kallmekris and my YT entertainmentbox is all setup.
Mr. man himself!
i've got one of the 5 ton hydraulic jack versions and can confirm it uses the infamous 775 motor.
I'm curious what would happen if we put this hammer on a millwaki hand heald impact. I'm sure it can be done.
usually you can unscrew the tip on a car 12v plug and there's a small fuses inside. probably why it failed so quick!
Came to write exactly this. It's just a fuse. :)
Just checked and you're right, though replacing it now still shows no connection on the leads.
Yup, was going to say the same thing...tiny glass fuse inside.
@@TorqueTestChannel Try cutting the head of a bolt roughly the same diameter, those glass fuses can be very pesky
@@TorqueTestChannel I thought you were going to let out the Bluetooth power cable technology. What a let down. xD lol
I would love to see a big ass brushless motor on this thing
about to say the exact same thing. a good 540 size motor would work well
And maybe slightly stiffer springs to allow it to get to a higher speed before hitting.
Came here to make the same comment
yea and it would make an occasional use roadside tool into a 300$ thing ... its the same thing as my 20$ air compressor, its crap but it fits in my spare wheel compartment and will (eventually) do the job when its super dark and or cold outside
Yeah... Definitely feel like we need a modified version or diy giant version+ weedeater motor.
Harbor freight used to sell an impact that had the same mechanism for about $25 that looked more like a traditional impact gun in style. It was fantastic for pulling flywheels off of motorcycles, but definitely not made for frequent use. I'd say it had about 10-30 tires changes worth of life in it before something broke, but it is indeed great for roadside use.
Unfortunately, as they've been clearing their shelves of the cheaper and sometimes odder tools they've dropped their version of this.
I had one of those, it actually broke 3/4" bolts if you weren't careful
yeah, slow wind up, but a hell of a hammer blow
They’re trying to become just like other tool stores and forgetting their roots. Forgetting why we love them.
@@davidconner-shover51imagine if there was a ratchet mechanism to stop it from bouncing backwards it would greatly increase the speed of windup
It's definitely a handy kit to have in the car. I could see some of the name brands coming out with their own down the line for 3x the price
They really should. There's a huge market for a device that can take off super stuck bolts even if it takes a full minute. I'd love to see one of these with half-decent build quality
@@pilotdog68 I agree. My first thought was how much faster could a brushless motor get up to speed to increase the frequency of blows or even allow for increased rpms, allowing for stronger springs n a harder wack. N of course the convenience of cordless
This is nothing new. I had one 15 years ago, albeit it had a pistol grip. It was made of chinesium and failed in no time.
@Goldar I don't think one can really equate 15-year-old chinesium to modern chinesium.
@@h8GW I don't entirely disagree with you but there is a definite difference in quality based on the cost of materials in modern chinesium n whether old or new technology is used in the product. The percentages of good quality vs junk are definitely way better now than they were 15 years ago though
Sweet! I saw TylerTube test this and I was super curious to see the internals. It pretty much works as I expected... but interesting to see nonetheless. Channels like theis is what makes RUclips great.
Thank you! I know I had seen it somewhere else as well recently and forgot the channel. I'll leave a card for TylerTube in the video
I saw his video too.... he was very skeptical that it could/would work. Then come to find out, it can be an improvement over the tools included with most cars.
I'm sold, I've ordered six of them for my kitchen staff. My cakes and baked goods have never been better.
Better than nothing! Not bad at all considering it's design. The first one I've tried many years ago quit literally after the first hit, so I considered it junk from that point on.
If time isn't a factor, not bad to have one for the car. And no batteries to worry about forgetting to charge. You have changed my mind on these quirky impacts.
Thanks again for a good video! 🐺🔧
Might've been the same thing with the connection failing at the cigarette lighter plug?
Honestly this thing seems really well designed! not well *made* mind you, but the engineering is on point.
it does exactly what it needs to do, makes the right sacrifices, and results in a working and low cost product! Great stuff
I’d imagine just like any centrifugal clutch that adding spring pressure will delay engagement to a higher rpm and doing so should see some gains! Especially if combined with a better motor or just over voltage
If you do this this thing might suffer a RUD
@singlecams convinced me to get the DCF899 back in the day, great channel with practical use cases. The egg beater taking on a Honda crank pulley bolt is something to behold!
Couldn't be one of their counter rotating engines. Those will laugh at a 1000ft/lb impact all day.
@@KaylaJoyGunn It was a J series with a weighted socket, still impressive for what it is.
@@KaylaJoyGunn J series is harder than a b-series bro.
i lifted a 8500 pound boat with the trailer with one of these jacks. Thought we fried it on the 6 or 7th lift but it turns out it was just the fuse in the cigarette lighter! Fuse fixed and im still using it 5 years later. 10/10 best impact + jack car kit that exists. period.
If you've got blocks and leverage, Id take this over any floor jack anyday.
Great video, once again. I'd love to see a mid-grade shop impact like this, ~$120 that takes an M18 battery with max torque rivaling big 3/4" impacts. I don't need the big guns very often, but would be glad to have something like that sitting on the shelf.
You read my mind. Been watching Singlecams videos on these things. Thank you.
I wonder if you gave the motor more power (18v? 24v?) if it would hammer any harder or will the blows be the same? I'd love to see a video of a suped-up version of this thing (more power to the motor, stronger springs so the mass reaches higher speed before engaging with the shaft) I could see this thing competing with the mid range impact drivers.
It should hammer roughly just as hard since the impact happens at a certain speed, though higher voltage and current will make it reach that speed (and burn out the motor) sooner. Since its already stupid strong but also stupid slow, that'd definitely be a "hell yeah!". Combined with stronger springs for a harder hit, I bet this thing would be an absolute monster until it shatters into a hundred pieces or catches on fire.
Worth noting that he's (sort of) undervolting it already. Plug in car tools are generally meant to be used while the engine is running, so it should be a bit faster with the 14-15v that the alternator puts out.
I don't think 18 volts would really be a problem or a benefit, but 24 would put more than needed stress on the windings, it wouldn't hit any harder though as the entire hard hitting action is based on springs and you might gain at max a whole half second between hits
Use a dc rc motor, high rpms
Mod this thing up!
But faster RPM the spring will engage sooner soon may not get as much omph. What if you change the spring tension so that it could spin up even higher RPM before engaging therefore having more momentum hitting on the anvil.
I bought a 12V impact beater gun from Harbor Freight about 20 years ago and yes it did remove that Honda crank bolt without breaking a sweat. I paid $27 back then and included 4 lugnut sockets. This thing works better than any air impact that I've owned Including an 18V impact gun from Bosch. Bosch is not the beast, the impact beater gun is for a fraction of the cost.
After this review, it gained a lot more credibility, atleast for me.
It's the kind of tool that you don't use very often but you'll be glad you have.
Would be a good idea to put one on the wife's car.
Am I the only one who wants to see how effective this hammer assembly could be with a much more powerful motor behind it?
Motor torque is superfluous in this case, you could make it hit a bit faster with a higher RPM motor but given the percentage of time that the reset action takes it would be a minimal improvement. Now if you machined a channel for the tilting mechanism, machined the mechanism to right tolerances, and did very precise calibration on the springs you could probably get significant improvement in blows per minute, but at the cost of massive increase in cost.
@@andrewfidel2220 A more powerful motor would be faster to bring the hammer up to full speed, initiating another hammer blow. If the rate of impacting could be increased from 1 Hz to say 3 Hz without changing the force per blow, it would result in a quite impressive tool.
i had a impact like this that looked like a ray gun. i payed $10 for it at walmart and it lasted for almost 16 years before it failed. i used it on scooter cvt belt drives because you could get the variator nut off without any struggle and not needing somthing to hold the variator in place like you needed to with a normal impact
Paid
Singlecams has great channel! Been watching for quite awhile. Nice to see this impact on the dyno, it's comical but spicy
lol except for the garbage clickbait videos showing these piles of junk beating Milwaukee and dewalt impacts breaking away nuts but they have them set to forward lol more garbage clickbait junk!
@@tylerbaldwin1633 Um no but thanks anyway
i have one of these "single use" 12v tools, but its an air compressor for tires. i've actually used it quite a few times over the years, and i've careful not to let it overheat. if you let these things run wild though, they will hit pretty hard and then melt into slag lol
Yup. I had to wait 5min for my old one to cool FOR HALF EACH TIRE. Thats 8 use/cooldown cycles for one car.
The more decent quality ones can go on a bit longer, but they still end up burning hot after a while. It's also a good idea to take them apart every now and again and grease the bearings and cylinder so that it has a fighting chance (rubber safe grease of course)
Once again thanks for the awesome content! a modified version of this impact with a stronger motor, heavier "flywheel" that releases the "hammer blow" at higher rpm would be really interesting to see.
I imagine we are starting to enter the wrist breaking territory, so a better handle is recommended :P
It would be neat to see one of these things modified via gear reduction to a hand crank. A hand powered impact wrench. For you know, replacing carriage wheels after the EMP event hits and there's no more electricity.
The reduction needed... Probably better off getting a cheaper and easier to use cheater bar.
@@jonanderson5137 No that just makes too much sense.
Garage 54 channel made a flywheel starter for a lada 😂 you could maybe bring the size down for just bolts 🤔
I've got a 50 year old Milwaukee generator that will withstand an EMP attack. It's like a cockroach with a 5hp Briggs and Scrapiron flathead. I've also got an old corded impact. I'll be all set for buggy wheel changes, even in the dark.
The hard-hitting science that I come to this channel for!
That hammer design is pretty ingenious in its simplicity. I'd love to tinker with something like that.
Increasing the anvil weight, increasing spring tension, using a better motor.
Also interesting to note, you can see that sometimes the lever rocks backwards and catches on the hammer as it is knocked back, that raises a couple of questions for me if the mechanism could be adjusted to make that controllable that might give some great loosening ability to the mechanism, first off the motor wont have to fight against the reverse inertia in the assembly to spin it back up, secondly, that reversed impact hit could provide a slight wiggling action to the nut/bolt as its going to be wiggled slightly back n forth every hit.
Only thing I'm not sure of is how much energy going into the hit in the intended direction, if we're talking like 9:1 that would be acceptable but obviously anything that gets closer to 5:5 is just going to be net neutral.
That does seem pretty uniquely suited to emergency and junkyard duty if you don't have big cordless tools. Seems pretty creative. I was initially guessing it was tightening some kind of spring until it couldn't anymore.
Bought the Harbor Freight version of this back in 2006 and its still going. Ive used it a couple hundred times, paired with alligator leads, going to a 18v lithium battery.
The oem plug used a low amp fuse, which I replaced. This was the only issue I had.
Since it's for a car, if the engine is running it would be getting 14-15 volts and maybe an interesting test
What limits this is the motor overheating. Higher power input means higher power output means shorter duration.
So I guess the amount of work it can do until it needs to cool down would be about equal.
The real limitation is the low amps available on those car outlets. Not much juice there.
Half the footage is at 14.5V
@@TorqueTestChannel ¿Pero? ¿El cable de alimentación,es de al menos 2 mm?pues saben traer de 0,75 x 2 , entonces hay que medir el voltaje en pleno trabajo y en contra del motor,si llega 11 v hay mucho para mejorar
We absolutely appreciate you my brother! 👌
Fascinating! I bought this type of lugnut removal tool back in like 2005 and sung it's praises for many years as I was able to help multiple people with flat tires, including myself once.
The Achilles heel, however, seemed to be the cold.
I noticed it worked a lot less - or not at all - when it was very cold out, which unfortunately is fairly common in Minnesota.
But it served me for more than a decade before it stopped working one day.
That’s actually really cool, super cheap for emergency purposes or just an overall cheap option but it still has its place
Honestly for and older lady or man this is perfect, some people are fully capable of changing a wheel but lack the strength they once had. This is perfect for them
Finally an impact driver for the kitchen, my souffles will never be the same again
For more than a decade I’ve had the old Harbor Freight Chicago Electric version known as 12v Emergency Roadside Impact Wrench. I used to have two but one broke on me when I had to use it last month. My DeWALT impact driver broke the impact-rated socket adapter with a single blow too. When I eventually got them off I found that some genius had put well over 1,000 pounds of torque on the lug nuts, ruining the studs.
I used my DCF438 cut off tool to make strategic cuts to the blow-molded case so that it now fits my CMCF940 impact and CMCB206 battery like a glove. It also fits my DCF899 impact though the DCB205 battery isn’t quite as secure (needs a foam shim).
Point is: These things break. “Emergency use” is the right terminology. The light would still come on but it would not turn and it smelled like it was burned up. This was after about 40-50 seconds of letting it hammer shortly after 30 seconds of hammering on a different lug nut.
I bought my first one to use on my motorcycle… specifically for removing the countershaft sprocket while powered off the bike’s battery. It worked like a charm for that and came in useful for a few roadside spare installs over the last 10 years.
There’s also a Kawasaki-branded version that I’ve been seeing for just as long.
These impacts first appeared about 20 years ago - the Shentai. I bought one ($AU70) and it got me out of a huge problem in the outback. I blew a diff pinion seal and needed to replace it. The impact easily removed the pinion nut, and enabled me to replace it plus about + 1/64th turn. Worth it's weight in gold. It will also undo rusted exhaust flange nuts that need 2 long extension bars to reach, where the bars absorb all the torque of a normal wrench. This was before the days of the Li battery powered tools we now love.
My senior citizen father had one of those, it actually saved his bacon more than once. I recommend them to older folks that can still physically lift the tire.
Thanks for testing this kind of tool at last. Long ago I challenged a RUclipsr to send his into TTC in the comments, but he declined.
i have been waiting a long time for this one :D
Thanks for covering the egg beater. I have the same scissor jack but I modded it to take my impact wrench. Zips the car up or down fast. Good for working on cars if u need to support weight quickly for engine or trans. It's not very strong, not for hd trucks. I think their motorized jack is ok 🤔 impact is much faster 😆 yea I think the egg beater will remain a curiosity. It is capable and surprisingly so. But I think I'd get a lot more mileage from a regular cordless impact.
Ill stick with my 4 way and my small floor jack. (one of those little 2.5 tons floor jacks that has the 2 foot handle or so) It is however nice to see that this stuff does actually work.. mostly as intended.
The egg batter design makes a lot of sense for its intended purpose.
Awesome you guys put this out, I saw one of these on another channel and I was debating getting one for my dad. Glad to know for the investment, it's good for emergencies. I wouldn't trust my life on it, like it's not a daily driver but for replacing a tire once in a blue moon, sounds like it could be handy.
glad singlecams got a shoutout. great channel
This was cool! It would be awesome to see someone make a homemade egg beater impact that’s on a 20v or 24v battery that does double the rpm!
This is the first time I've seen the egg beater (I'm a welder/fabricator, if something needs beans I open the oxy/acet tanks in my back yard) - I'm really impressed
I always assumed these were complete junk. Now you actually have me interested in one. Damn you TTC for making such fantastic content. Also, would be super interested in you guys testing tire inflators like the digital one that Astro makes. I've always used the Astro one, but recently it got broken and I'm back in the market. Matco's $170 price point just doesn't seem worth it, and can't help but wondering if there are better options out there.
I was today years old when I learned that these things even exist..
This thing 100% NEEDS to be hot rodded with a brushless motor and or any other upgrades Y'all feel like blessing it with.
Wonder what would happen if they used a mother designed for a cheap desktop cnc. Would be interesting to watch...
Simple and useful design. Imagine what that tech could be when applied by a better company.
"centripetal force pushes the heavier side out"
Nitpick: centripetal means center seeking. Centripetal force pushes things in, not out. The word you're looking for is the one people love to claim isn't real because their 9th grade science teacher said so, centrifugal.
That always rubbed me the wrong way. Maybe there's no such thing as "centrifugal force," but it's a word that accurately describes angular momentum. It's like saying an ant isn't a bug, it's an insect. Bug is just the word people use
Right? Can't we all just agree that when there is a centrifugal (center fleeing) acceleration, it's fine to be a bit lazy and attribute that to centrifugal force? At the very least, stop attributing outward acceleration to centripetal force, because that's simply wrong.
The centripetal force is actually at the pivot, preventing the rocker from flying to infinity from the axis of rotation. The pin also has a tangential component that is making it he rocker go around.
That hammer mechanism would be a good torque multiplier if it had 1/2” drive in and out. Use another impact to spin it up
Thanks for doing this. I was really fascinated with it and now I won’t make fun of it anymore.
I used a similar 12 volt floor jack as a outboard motor lift on my old 40 Mercury. Heck of a lot easier than manual lifting it. Nice work guys.
I have one that the principle is the same, but milder like a traditional impact driver. One thing to consider is those will perform even better by a wide margin if the car is running. With 14+ volts the speed of the hammering is quite faster vs on a regular 12 volts not being charged.
Yeah, wasn't a fair test if only 12V was being provided (might even be less under load). Should be 14V. Having said that, it's likely not very reliable and I'd expect it to break when needed most. Might be the motor that dies, might be some gear teeth...
Love that you grabbed one of these..I'll hang on to my m18 mid torque for now lol..thank TTC
This was really neat! I might need to chuck one in the trunk of my car, now that I'm getting old and decrepid... not that my car has a place for a spare tire anyway...
I picked one of these sets up a few years ago and use it twice a year to switch between summer and winter tires. I live in a apartment and this box is all I need to do it in a parking lot. I am using a torque wrench to tighten though.
I feel like this would be good for a casual who just needs it for what it's intended for, a roadside emergency
I'm a mechanic in maine and most lug nuts I encounter you'd have to be the hulk to remove with the little lug wrench you get
would definitely be good to have in the trunk for many
When i first saw this, i assumed it was gonna function like any other impact but cheaper, but the way this works seems like a slower, but highly effective method of getting things done, and it makes me think of what it would be like if it was fitted with a heavier weight and a better motor so it could be priced similarly to a decent conventional impact. I have a feeling it would become great at removing rusted and very tight nuts. It would probably also become a bolt snapper 5000, but that's besides the point lol
The Egg beater icon on the graph and "uggas..... Then duggahs" too funny 😂😂
Totally unexpected.
Nice work!
I had something similar 30+ years ago. I had never used an impact wrench before but my friend's dad had a really nice Porter Cable impact wrench (back when they were top-of-the-line), so I wanted to get something for myself. As a broke 15 year old I found one but didn't realize at the time it worked in a similar manner to this, spinning up to speed and then hitting. It seemed to get weaker and weaker after each impact. I never got it to break anything loose. I borrowed my friend's and it hit for maybe half a second breaking loose everything the other one had trouble with
Loved the video! TylerTube kinda tested this thing, and now it’s been truly tested! Keep finding more oddball tools to test, maybe we’ll find a odd gem like this again. 👍
I had something similar to this over 10 years ago. Some cheap crappy feeling thing that could be hooked up to the cigarette lighter or directly to the battery. I was really amazed how powerful it was, all tho extremely slow. But saved my back on rusty super tight lug nuts.
NGL, a much bigger version of this could be fun to see from the big tool companies
Stronger springs should make it hit harder, faster motor and more mass on the flywheel should make it hit a lot harder. Would be interesting to explore.
That's two tools going on here
The impact wrench is actually a really innovative design
It's not only using the spin up and slap with a hammer using centrifugal force, because of the Diameter of the hammer mechanism, it's also acting as a flywheel.
With enough of a reduction and a few tweaks that could make a MASSIVE amount of torque.
If I were trying to re-engineer that, I would replace the pressed metal hammers with much beefier machined ones straight away because they will be the failure point, then make the flywheel larger by extending it into a planetary gear barrel. Then use a motor about the size of an M18 and change it to a pistol grip.
When you're doing that kind of work crank bolts, track bolts, lock tights etc you want, three ughaduggas done. Weight and space are sometimes an issue, but the flywheel design means you could make it super low profile one way by flattening the flywheel or super slim by lengthening it.
The jack is easy, put it on screw inside a bottle jack rather than the scissor jack might be my only suggestion.
Great video! Thank you, gave me a whole new insight into how far power tools can still go!
Great video as always! Thanks.
The way this works reminds me of one of those big electric impact wrenches ("el-max" we call them) used for removing lug nuts on trucks.
I use a DCD996 in low gear with a custom drive fitting to do most of my jacking with oem scissor jacks. Other than the safety issues if used stupidly I find I wear them out periodically resulting in a seize up occurring during full beans use. It's not the threads that go, it's the low speed thrust bearings getting too hot at speed. :-)
That's an ingenious impactor design, for sure. I do wonder, though, how well it will hold up under long-term use. It seems to me that the contact area between hammer and dog isn't going to be all that big, which will put a fantastic amount of pressure on the contact patch and precipitate wear. Or maybe not...
its not for long term use, its for when its 3 am and -4 outside and the last thing you want to do is be on the side of the road jumping on the cheese grade lug wrench that came with the car
I bought a 12 compressor to carry in my work vehicle and it works just fine using the accessory outlet, but there is a big difference in performance with the vehicle shut off compared to the vehicle running. Try it if possible plugged into a 12 volt source with the vehicle running and see if it has more power.
That thing is a real thumper. I wouldn't trust it in the emergency it's selling itself towards, but for a very patient home user it might be a cheap way to get a job done if it doesn't die first.
The prospect of beefing this up and testing the toughness of impact sockets is titillating.
I purchased one of these type impact tools from a Target store about 20 years ago. It worked with the same principle, but the plastic case was so brittle, it blew up in my hands. Returned it right away and the clerk said they had just pulled them because of this failure.
Saw this video, had to make some coffee and sit down. It's time to see what this egg beater can do!
Time to revisit the gas impact. Like an episode of Make it Extreme; 10 pound flywheel. A hoverboard electric motor might be awesome too.
thank you friend 😊
I would love to see how much the performance changes if you ran much thicker wires straight to the motor with an external switch. Those 14awg or 16awg wires are hamstringing thisb thing for sure (based on the light dimming). And maybe a charger on the battery to emulate a running engine over 14v
Cool! I figured it had to be some sort of centrifugal clutch to account for its sound & behavior. Not sure if I want one of these per car, or if I should just loosen & retorque the lug nuts every so often to make sure they can be removed with the usual wrench should the need arise.
This kit and a solid booster pack would make one unstoppable at the scrap yard. Geez. I'd be divorced with all the crap I'd be bringing home. 🤣
Interesting to see what else is out there that truly works.
Omg waited for this one, thank you!
Nice shout-out to singlecams
Tbf, kitchen aide stuff, at least the old antique ones, had motors with way too much grunt than they had any right having. I remember my grandmothers mixer trying very hard to break my wrist when a rag I had got caught in it. Thankfully I was smart enough to let go.
Definitely interested to see how these spin up Impact's work
I completely forgot about that afront to the car gods 😅
Seems like the next evolution should be a electronically controlled interrupter. You could have an electro magnet at some point of the rotation that could variably trigger the hammer to hit the anvil. In doing so you could vary the speed the mass spun up to before it engaged.
The person who invented this is an evil genius.
Dude, you've got to put that crazy gas engine you created on that thing!!
Uggas... then duggas.... subtle yet hilarious 😂
looks like this is the perfect testbed for some sort of frankenstein egg beater, like putting mutiple hammers on
Saw this on TylerTube's video a few month ago so it'll be interesting to see results.
It might only be making 121 for a 5 second test BUT it is a tire swapping machine in emergencies and majority of tires are 100ftlbs or less on lug nut torque specs so I'd say thats pretty idiot proof for overtightening.
I’d love to see thee this thing upgraded with a brushless motor. Would probably be a monster
I have a model that does the egg beater thing that is quite older than this one. Does do the job even if it takes forever
Make me wonder how a brushless would go prob shatter it's self....
Abs enclosure will be super funny at freezing temperatures tho :v
Stuck at roadside with flat tire bolted too tight? Cool, now you have sharp plastic shards in hand too c:
It would be cool to see a drill powered version of this on a nicer housing for axle/crank bolts.
I'm pretty sure that assembly is some type of centrifugal force clutch that releases when it reaches a certain RPM to hit the hammer, used to have a go kart with one of these, really interesting design regardless.