The Post Apocalyptic Inventor c

Nice... but tell me now,... my comments are witnessed and acceptable.

@The Post Apocalyptic Inventor: You should NOT use the brush for the higher speed setting as that is the tertiary brush you noted in the video. This offsets the rotor poles but leaves less of the winding to do more work. This brush should be removed and this connection ignored. Only use the directly-opposed brushes, as this balances the current between ALL rotor windings. The high speed is largely inefficient, and when re-purposing these for linear actuators, this largely reduces torque. The high-speed brush is a cheap cheat to avoid using two motors in series or parallel as a two-speed control, and high motor load in this manner can burn the motor, as the "low-speed" wiring that uses the diametrically-opposed brushes provides much greater root-mean-square power than the crude cheat that is the third brush.

We used linear actuators for this robot hand. kzfaq.info/get/bejne/rLV8qamZydGwnXU.html

I like this channel, and the other German guy: Great Scott.

LOL. I didn't see the word Lucas on it.

Made in China, packed in UK, just as in USA and here in Aus.

Tina..As an British engineer I am deeply offended by your remark. UK is and has always been perfectly capable of producing high quality products. it has always been the accountants, (stupid, self centred and empire-builders), that have brought problems about. In Britain these accountants were usually heads of engineering companies. Think of George Simpson who, all by himself, destroyed GEC. Look up the history of GEC - UK and how that maniac squandered a 4 billion £ cash mountain left by Wienstock. By contrast most large engineering companies in Germany are headed by technically qualified people. (At least that is how it was the last time I looked). If you are looking to criticise Britain with something then it has to be the political perversity of bestowing, (or allowing to retain), a peerage to to an ass who destroyed a vitally important British company. To address your comment specifically, Britain may not be making volume production cars anymore, (like VW, Peugeot, Fiat etc), but has lots of subcontractors supplying the volume car makers. This is why things are very worrying for those subcontractors when they contemplate what will happen to them, their workers and jobs when we leave the common market and cannot agree to a free trade deal. One guess who'll benefit... By the way Britain designs and makes the wings of all the Airbus' and we also design and make great world beating Rolls Royce jet engines .. and take it from one who knows ... that is just the tip of the iceberg of our capabilities. And Tina ... We do stuff you just would not believe! I invite you to take back what you said - even if said in jest. By the way TPAI: As always great video.

CamiemEngineer Offended? Engineer yourself a thicker skin. She didn't call out British engineers. I would guess Tina has consumer experience with low quality parts. The book you wrote actually explains why a consumer might be surprised when the market produces a quality part.

+ Nick M Yes you're right I ought to grow a thicker skin. But just so you know I did personally deal with GEC as a Power Station engineer, you know .. one of the twerps, (that no one cares about - invisible ... you know the sort), that do their best to bring electricity to your home so that you can use your computer oblivious of what's behind the switch. But its not me that you need to instruct to grow a thicker skin but instead to the thousands of engineers who lost their jobs & livelihood at GEC because of one criminal ass, namely Simpson. Oh yes I did write a book didn't I? Well maybe it's because I am fed up with engineers and manufacturers being blamed for the actions and aftermaths of non-technical asses running major British engineering companies.

not a difficult achievement, let's be honest!

Most dc motors are reversible simply by switching wire polarity.

I bet his spelling is good too

Boomers have awful grammar and spelling.

Lol he ain't American hhhhhh

Or mechanical hospital beds

Yup I used them as leveling legs on my portable sawmill, found them in a scrap yard.

Leandro Pereira Yep, that's actually quite a good idea. Too bad they're too thick for many purposes though.

Don't forget power seats for cars ;)

Gerüstfuss

Change the worlds off its axis

most all DC motors have a lot of torque and that's why metal lathes and battery operated drill or tools are DC. First it was all belt driven then pneumatic drive and now DC just for the torque.

The srcret lies in the worm gear. The ratio of this gear is likely somere in the range of 40:1 - 50:1 meaning the speed is reduced and the torque is increased + it is not backdriveable. The dowside is that the efficiency is probably only 50 %...

I am impressed that it can brake a 2x4; it can probably lift up a chunky baby off the floor.

Pacifico VW the reason I was impressed with the amount of torque is because I am nearly 400lbs and I need to bounce on a 2x4 to break it. So it must be able to output around that much. Granted though my 400lbs is spread over a greater area than that of the jack.

Of course! if you count the number of teeth on the gear that is the value of amplification, bc the motor shaft makes a whole turn for only ONE tooth of advancement on the gear. That means 60:1 or whatever the tooth count is, IS the amp factor.

I love how what I wanted to say is already here.

cmonster6, I have to agree with you. I work with a German engineer. He's going to be all giddy when a drop a few of these German terms on him.

cmonster6 useless ! Just use a electric drill and car trunk jack done!

Hello from UK, despite driving Mercedes, I'm here for English lessons.

N Ferraro same here, told the wife these things will come in useful someday... 😒😂

N Ferraro there's so many things that I've thrown out and then realised that I could have used them later that week. I think the trick is to make some time to look through your boneyard so that you know what stuff you have, instead of only learning what you have once you've put it in the bin.

Murphy's Law!

@@texasrox2010 You haven't been on a junkyard run in a while. All jacks removed from vehicle, none allowed through the gates. (at least in PA)

I also meant to compliment the posters you have in your workshop. I love the monorail / mag-lev concept art. I love the style of illustration and the futuristic vision. Why didn't anyone make that?! Great inspiration and decoration though!

If you understand what axial force is, you understand that there was zero axial force applied to the gear he was referring to at that moment. Regarding the plastic teeth and how it can break a 2x4 without stripping the teeth... there is a huge reduction in both that worm gear assembly and the lead screw from the jack.

there are entire countries that do it out of necessity. Instead, we have laws to prevent people creating their own deathtraps. They are called regulations. For example, I could probably build a whole car from scratch out of random junk, but it probably wouldn’t pass pedestrian safety standards. So if I accidentally ran someone over, they definitely wouldn’t survive. If you disagree with this concept, you should vote to reduce things like public safety regulations etc.

Consumerism prevails to benefit the grand capital at the expense of Nature and Humanity...

I like repurposing "junk" that I already have on hand as much as the next guy, but to do it on a national (in a developed nation) or global scale just isn't feasible. Whatever you save in material costs you easily lose in additional labor to adapt the existing items into the new product. This process would be difficult, almost impossible, to automate because it's likely that all the used items are each slightly different from each other, which means that each one becomes a custom built item. It just wouldn't be profitable, and if its not profitable it can never happen on a major scale.

Great idea ! I think about my heavy retracting patio shade ! Struggling with it is increasingly difficult with my arthytis attacqued hands.

I would bet if you got a motor off an older car there would be no plastic. Ask someone at a car salvage yard about this . Preferably an older employee who has worked on older cars.

crzy11000 older cars generally are metal gears, you're right.

I believe that may be the idea sort of a shear shaft or weak link so the damn thing doesn't tear itself off the mounts if it binds up.

The trapezoidal screw takes most of the shit and abuse. If you think about it the jack holds its own if you stop cranking and remove the crank it doesn't transmit any force to the stub; therefore the force on the motor whether plastic or not is minimal.

Howard Black a

Focus you fack?

The Jack let the shmoo out

Its only smellzz

Nice.

Shes toighter than she looks

Economics of scale. Compared to normal threaded rods none really needs a lead screw.

aserta it is a different operation, so overall scale comes into play. Standard bolt threads are made by the billions, but the Acme type are much less common, thus slightly more expensive

pach maseen

+aserta Acme threads are cut, and then typically ground to a fine finish. Threaded rod is rolled with a thread die. The finish on threaded rod depends solely on how worn out the die is. If you can figure out a way to roll Acme thread that is precise as cut and ground thread, but as cheap as threaded rod, everyone will be begging you to take their money.

+Interstellarsurfer ACME threads are actually rolled. Its much faster and the cold forming creates a stronger thread. kzfaq.info/get/bejne/mMmcocWQqNaYo3k.html

Yes and no....….if it's a fix it no matter what then yes, but if it's a maintenance situation where the end result has to conform to insurance standards.....DIY has no place except for the home workshop. BTW...….I take my hat off to the clever application(s) that he uses for simple solutions.

Tom William youre gunna fuck your dogs up if it malfunctions

Muskoka Mike That’s similar to some post war model trains I got from my great grandpa. It has a kind of relay that switches directions every time you cut power

Muskoka Mike เพลง

Al Carey not as much power and you kill your drill motor in doing so.

Lol I do the same thing 😂. BUT I made this anyways cause its fun for me.

I do the same thing but make sure the sucker has enough power or you'll burn it out quick...:)

@@Aussiehomestead1965 Some years ago one of my friends in the model club used to make DIY wheel chairs for kids on low budgets using two windscreen wiper motors to drive the back wheels. Using these 12 volt motors is all about gearing down the motor to increase the torque etc.

TheCrazymicki greatest videoyouve give especially omegoodideas.

They look like old Popular Mechanics posters.

will amoroso I was going to make the same suggestion you gave

rcbot original "Kauf dir nen Auto vom Schrottplatz (...) Bau zb nen Windrad" - ".....war, war never changes." :D