I rebuilt alternators, starters & generator's for 16 years . If I knew you was going to do this I could have saved you a hole lot of time by getting a "delco 25si alternator" a brushless alternator for semi's & heavy equipment . The down side is the size mainly the length about 2x & larger diameter , the plus they use less power to excite the rotor should run more efficiently ?. I would love to see how well a 25si performs .
Hello good night friend, I liked your experiment very good, it's a pity that here in my country we are very late and everything here is very expensive but I will try to gradually get the necessary parts to assemble an electric bike like yours congratulations
I am sooooo happy that you made this project fully brushless and sensored! Now i would love to see you revisit the go-kart using this alternator, i wonder how will be the difference in a 4 wheel vehicle
Well done! This is a great use for a junkyard alternator. From an engineering standpoint, I always try to go simpler, so I love your idea of converting to Brushless DC. Good a/v, very good narration and explanation. Great channel!
Really enjoying your DIY electric build series, would love to see a part 3 with added field weakening to take advantage of the brushless upgrade! Keep up the good work mate.
Awesome project! I would love to see these conversions produced to power all kinds of electric vehicles 🚗 😮😅❤🎉I l love the idea of combining an American alternator with a controller made by ASI in Canada! Then you are using primarily North American made parts !😮❤
So awesome that you were able to eliminate the second battery and the brush. Cuts down on battery costs for someone like myself considering this project. Have you seen Mr Electrons BLDC controller? I think that's the direction I want to take my build for simplicity sake
Very cool that you know so much about the electric tech! That said you didn't get much range out of the rig! My $1500 RadRover ebike gets at least 20 to 30 miles from the 48 volt setup... with some pedaling assistance of course.
So glad to see you are continuing this project. I was very looking forward to it from the teaser you provided at the end of the last one. Nothing says sadness like having a half full battery and your field batteries die. I think if I where the kind of Maker you are, I'd have made a way to recharge the field batteries off the main pack when in a pinch. But that's just me desk chair coaching. I want to make one or a pair of these for a cart project I have been scheming on for ages. Thanks for proving that these Alternator conversions can be torque monsters.
the idea is sound and it will work.... there are several things in this video that they have not even addressed... like the AC voltage alone will do nothing, hence the power brick that converts the 120 to 24 volts... but in the end, this works flawlessly... the generators are easy to find and the motors as well... just have to do some searching.... I am putting a video together as well as a live public display of it working by the middle of July... just wanting to make sure the parts will be available for everyone.... no I am not affiliated with this channel...lol.... too many hidden parts in this video....
I can’t believe how well “Old Rusty” took that hill. I’ve ridden it with my e-bike and she struggles even while I pedal. The torque on that motor is serious! You should see you can measure it for comparisons! Great vid Austiwawa!
I wonder how it would compare with motor you can buy from Amazon or ebay for a few hundred dollars. There is a pain in the ass factor to this conversion.
I also started a project like this, first I built amazingdiyprojects's 1phase bldc, but that didn't work well, so I used a washing mashine motor instead, but the 3d printed gears broke, and the voltage was too low. You gave me back my motivation to think about finishing it. While working on it, I constantly thought about an alternator conversion like yours, but did not find any source on that a year ago, so did not make that. Yours is a pretty elegant solution, well executed, keep up the good work!
@@foxxyytofficial I wanted to use permanent magnet, but I did not like the "grind down a bit, and put a magnet on every spike with superglue" technic. And I didn't have an alternator.
@@kevegonczi2835 i wouldn't recommend that idea for you, i prefer conversions like the channel "Chris workshop" did, that is a better permanent magnet solution
Great vid! I'm sure that alternator can generate some serious electricity with such a powerful permanent magnet now. I'd be curious to see its output measured as a generator!
Awesome content, as usual man! I did this same mod about a year ago and honestly, I couldn't find any info on it and was blown away more ppl hadn't considered doing the same! I think that a lot of ppl don't quite realize how the rotor of an alternator actually works... it is kinda intimidating seeing those big triangular teeth inside, but still. I was impressed w how it worked so it's awesome you're showing us how here! Cheers mate! - Jesse
АПАЗДАВАЕШЬ ты,брателло, такие технологии по переделке генераторов электромагнитного возбуждения на возбуждения постоянными магнитами ЛЕТ 15 НАЗАД ИЗВЕСТНЫ БЫЛИ.......В СОВЕТСКИЕ времена в СССР ХВАТАЛО ТАКИХ умельцев;-тогда аккумуляторов не хватало на всех,да и дороги они были и не долговечные; вот люди включали мозги и создавали такие электро-шедевры, что чертежи таких девайсов ложились на столы Советских Конструкторов,и промышленность выпускала уже торговые марки электро товаров.....
@@prior8t2000 350 dollars is nothing in the usa or canada, the cheapest rent is around 700 dlls a month and that is very rare because the actual cheapest rent on most major cities is around 1000 dlls a month for a studio (basically a bed kitchen souless room)
I love that you use the metric system! So we in the rest of the world can understand... You didn't go further because of the cold Temperature. It safe to add at least 25% to your range numbers in the summer.
I watched your last video with some significant envy, and then you drop another with another fair step in the evolution of Rusty. Great stuff. Keep it up! Oh, and can you provide a source for the magnet you bought?
You are absolutely awesome and I appreciate your professionalism and knowledge of this subject and in the very near future you are going to be very valuable to the electric ⚡️ vehicle industry.
Nice ! and now I've seen a couple of ur vids. I say > Yes you are absolutely capable of making your own motor < also for a comparison my Go Ped with a 2 stroke gets well over 200mpg. On a 1 liter tank I can travel roughly 30-50 miles. Top speed is somewhere between 20-30mph. It varies by how heavy the rider is & also road terrain. You can ride for hours without a care.. except, DON'T fall ! U don't want to eat it on a scooter , lol You should try mounting a 2 stroke to old rusty ... or maybe old rusty's brother ...
Hey it works with a bridge as well, I am thinking of putting a step up converter to charge my battery, while braking. And I put butter under a magnet, so it did not crash hard.
I figure he's around Grimsby or thereabouts, near the escarpment. The fruit trees are a dead giveaway. Violating the HTA exceeding 32kph on an electric! But I'm not complaining. Better than putting out a few grand for an EMMO.
I think you have power to spare. Try a larger sprocket on your alternator, maybe get it up to 90km/h. A couple etra teeth should do it. Awesome job on the bike, you inspired me to build my own. Love the detail you go into, especially the diagrams, saves me the trouble of the research. ✌️😎
I have a question. At 03:50 you start pushing one of the red parts into the axle of the rotor using the puller. I don't understand how are you using the puller to push in the manner that you do. Can you explain? It seems to me it shouldnt push at all from the geometry you are using. Thank you!
@Barstools And Powertools Ahhhh. So the top poll piece is highly atracted to the magnet and he is using the extractor for stability lowering it step by step thru the extractor screw. It makes sense now. Thank you!
It's really cool to convert an old alternator into an e-bike kit. The top speed is impressive, but the efficiency is relatively bad. I generally get around 7wh/km, but the top speed of my system is 50kph and I always have a switch that limits the speed to 35. I was pretty confused when you put in what looked like a single permanent ring magnet, but there's actually 6 magnets in there.
Dud you have no idea what you've started. You have just created a bunch of Mad scientists. Now that you've shown us; we can pull alternators out of cars in the junkyard for way cheaper than we can buy a comparable electric motor anywhere. You are truly a national treasure for us all. And trust me; just what you did by removing the material from the two sides of the center armature to add the permanent magnet simplified things a lot. And correct me if I'm wrong, but; you don't get regen until you add the permanent magnet "Right"? Thumbs up! Like and subscribe, vary cool!
Maybe you could build a backpack that holds another big set of batteries? That way you could look like there's no batteries lol just a fun thought. Thanks for you videos! I love watching other inventors, if that's what we are called lol
the bike prolly has those crappy un sealed bearing in the hub. he should def ungrade the wheel hubs with sealed bearings. could also take the freewheel off on the rear wheel to free up more friction
Inspired by your video, I'm going to give this a try. I am looking for reliable low-cost motors to build some sprint kid karts, and this looks like it should fit the bill both power and price wise. Plus it's crazy "green" to boot. Grabbing the alternator of a donor vehicle tomorrow.
hello I'm trying to build an ebike using your video. if I'm using a 10 speed gear system do I still need a controller? also if I use an altentor can I still use a drill battery, or should I just use a torque drill as a motor?
So what do you think of doing a 200 amp alternator and a very powerful controller and use a dc speed controller on the electromagnet to reduce the field to 1.5-2v for cruising. 12v is a bit overkill as I think they saturate around 5-6v.
Stupid question - what would happen if you kept the field windings, but instead of using a battery, just shorted the brushes to each other? This is a pretty awesome project. You've got me wanting to find an old alternator to see what I can do.
Shorting the brushes together would still spin when applying voltage with the BLDC controller, but the magnetic field would be too weak for usable torque
@@gangoffour6690 disk breaks allow you to stop faster, which is fairly important for this build. He said nothing about him being wrong, just suggested an improvement.
OK the build was very interesting, but not nearly as interesting as the young man who built the bike. So many people today are stuck inside of a box when it comes to thinking. Example "I need an electric motor for my E-bike build. Well all I have is an old alternator. I guess I am done". Most people do not start thinking outside of the box until they are older and have acquired knowledge from living life. The exceptional people are the younger who look at a problem and figure out how to solve it. Yes I agree this knowledge was already freely available on YT, but it was not as simple as just buying a ready built motor. Kudos to the young man who not only thought outside of the box, but was willing to give it a try and get the project done.
Excellent built and modifications, I couldn't see where is the polarity N or S of the permanent magnet, when installed on the shaft. I would like to know, thank you!
you did some great work - scientific method, used to a plausible degree, finds trial & error to help make concise end results.. expanded continuations have improved your personal presentation style, which will always be intransigently applicable, can easily come to meet higher achievement.. thanks for the experiments, we'll check out your examples and see you in later episodes.! ~WarriorPoet~
Your measured top speed shows that this is more powerful than the average 250w or 750w eBike. You mention 99amp and 47v so that's a peak of about 6bhp !!! Anyone copying the design could scale back the voltage in exchange for more ah (say 24v and 36ah) and would get something closer to typical eBike performance with a top speed near 45kph and much better range. But where's the fun in that !
Funtastic ebike - been following your builds and I'm so impressed. Could you try the range test on a slightly warmer day and keep your speed under 35kmh as wind resistance at speeds above that result in a massive increase in power needs to maintain those speeds. So impressive going up those hills though. Well done and thanks for your video's.
Can you use the electromagnetic rotor as a sort of variable field motor by increasing or decreasing the field voltage so that you choose high torque or high rpm
Would get you more range and better acceleration. If you use the "buck converter" he mentioned, it would be a simpler control point while still removing the second battery.
@@jameswyatt1304 about better acceleration i don't know, since it already was at full current with the 3S LiPo But range would only be better if he could adjust on the fly, and that is dangerous
Fantastic!!! I am, childlike, wondering. If you have a standard e-bike, is there a way to have the battery charged by the pedaling motion? Instead of charging the battery from the grid.
The amp draw should've kept the batteries pretty warm. Besides, getting 14 amp hours out of a 18 amp rated pack is pretty good if they're recycled cells.
I'm not sure which country you are in. But here in the UK, you'd get shot with shit big time if you were caught riding that on the road. Especially at 50mph!!! An electric bike that is above 250W and not pedal-assist only is classed as a motorcycle so you need an MC licence and insurance etc. And the machine as to be registered for the road. A very cool conversion though I might add. Well done.
That magnet is one lump eddys will gather as heat overtime in there now rather than the segmented copper of old, good effort though nice and simple mod.
Ok, so I have an electric scooter I want to scavenge to make my mountain bike electric. Do I need to add another sprocket for the motor or can I just add the chain to the largest gear already on the bike and adjust the derailer to limit travel up to that gear?
Do you think the change in speed and range to almost double the figures between the Gokart build from 5 years ago and this one, was it the weight and amount of friction generated from the four gokart wheels or something else?
Probably multiple things: Changing battery from lead to lithium (less weight and more poeer available) Adding a better/more powerful controller and the hall sensors And changing the electromagnetic rotor for a permanent magnet one
Is there anyway to be able to calculate how much power you'll be able to get from an alternator before going through all this work and effort? I've got a monster firetruck alternator that can put out around 400 amps at 12v. Just wondering what kind of power I'd get.
Most people that tried get around 70% efficiency and 70% of the nominal power For a 400A 12V alternator i would surely use at least 72V and install hall sensors to keep everything under control, also choosing a BLDC controller from a reputable brand
I wonder what the top speed would be on something else that's extremely aerodynamic. There's the world of velomobiles, which are basically recumbent bikes with aerodynamic fairings. They're about 40% more efficient than a road bike, which is already much more efficient that Old Rusty.
Definitely saving on battery not powering the Rotor. Just wondering what difference segmented magnets in Rotor would do instead of the Wedged shape metal as I'm sure you'd have even more power and even less battery usage. Sure you could do a follow up video on that ?
The Claw Pole design of automotive alternators reduces the cogging torque because the transition between North and South poles the windings experience is gradual. Excessive Cogging is a real problem in motor designs.
I rebuilt alternators, starters & generator's for 16 years . If I knew you was going to do this I could have saved you a hole lot of time by getting a "delco 25si alternator" a brushless alternator for semi's & heavy equipment . The down side is the size mainly the length about 2x & larger diameter , the plus they use less power to excite the rotor should run more efficiently ?. I would love to see how well a 25si performs .
Hello good night friend, I liked your experiment very good, it's a pity that here in my country we are very late and everything here is very expensive but I will try to gradually get the necessary parts to assemble an electric bike like yours congratulations
You got eBay ?
I am sooooo happy that you made this project fully brushless and sensored!
Now i would love to see you revisit the go-kart using this alternator, i wonder how will be the difference in a 4 wheel vehicle
I definitely wanna see that
A lightweight alternator kart would be a fun idea! Thanks Foxxy
@@austiwawa - Probably work better on a cart. Isn't the balance of the bike effected by the weight of the alternator attached to the side like that?
@@austiwawa how did you modify the back wheel ? you've done things to it from when you got front motor.
Thank you for your great works. Please add step by step processes.
That hand gag got me... I can't believe it. Good work
Well done! This is a great use for a junkyard alternator. From an engineering standpoint, I always try to go simpler, so I love your idea of converting to Brushless DC. Good a/v, very good narration and explanation. Great channel!
You are one smart kid!!! You will further electric cars and bikes and only God knows what other wonderful inventions you will bring to us!!!
Really enjoying your DIY electric build series, would love to see a part 3 with added field weakening to take advantage of the brushless upgrade! Keep up the good work mate.
Awesome project! I would love to see these conversions produced to power all kinds of electric vehicles 🚗 😮😅❤🎉I l love the idea of combining an American alternator with a controller made by ASI in Canada! Then you are using primarily North American made parts !😮❤
Great job, also the video presentation, narration and editing was excellent.
Your engineering skills are amazing
So awesome that you were able to eliminate the second battery and the brush. Cuts down on battery costs for someone like myself considering this project. Have you seen Mr Electrons BLDC controller? I think that's the direction I want to take my build for simplicity sake
Nice job, you inspired me to build an old rusty of my own.
Thanks.
Old Rusty's unite!
This series has filled in so many gaps in my knowledge about how 3 phase electric motors and generators work.
Follow your dreams young man. When someone tells you that you can't do something or it won't work, PROVE THEM WRONG 👍
Very cool that you know so much about the electric tech! That said you didn't get much range out of the rig! My $1500 RadRover ebike gets at least 20 to 30 miles from the 48 volt setup... with some pedaling assistance of course.
So glad to see you are continuing this project. I was very looking forward to it from the teaser you provided at the end of the last one. Nothing says sadness like having a half full battery and your field batteries die. I think if I where the kind of Maker you are, I'd have made a way to recharge the field batteries off the main pack when in a pinch. But that's just me desk chair coaching. I want to make one or a pair of these for a cart project I have been scheming on for ages. Thanks for proving that these Alternator conversions can be torque monsters.
the idea is sound and it will work.... there are several things in this video that they have not even addressed... like the AC voltage alone will do nothing, hence the power brick that converts the 120 to 24 volts... but in the end, this works flawlessly... the generators are easy to find and the motors as well... just have to do some searching.... I am putting a video together as well as a live public display of it working by the middle of July... just wanting to make sure the parts will be available for everyone.... no I am not affiliated with this channel...lol.... too many hidden parts in this video....
I can’t believe how well “Old Rusty” took that hill. I’ve ridden it with my e-bike and she struggles even while I pedal. The torque on that motor is serious! You should see you can measure it for comparisons! Great vid Austiwawa!
I wonder how it would compare with motor you can buy from Amazon or ebay for a few hundred dollars. There is a pain in the ass factor to this conversion.
@@ineffable1129 the idea is not to never buy standard motors, but to show that you can use alternators
I also started a project like this, first I built amazingdiyprojects's 1phase bldc, but that didn't work well, so I used a washing mashine motor instead, but the 3d printed gears broke, and the voltage was too low. You gave me back my motivation to think about finishing it. While working on it, I constantly thought about an alternator conversion like yours, but did not find any source on that a year ago, so did not make that. Yours is a pretty elegant solution, well executed, keep up the good work!
To be honest there are good alternator conversion videos out there
@@foxxyytofficial I wanted to use permanent magnet, but I did not like the "grind down a bit, and put a magnet on every spike with superglue" technic. And I didn't have an alternator.
@@kevegonczi2835 i wouldn't recommend that idea for you, i prefer conversions like the channel "Chris workshop" did, that is a better permanent magnet solution
Great vid! I'm sure that alternator can generate some serious electricity with such a powerful permanent magnet now. I'd be curious to see its output measured as a generator!
Awesome content, as usual man! I did this same mod about a year ago and honestly, I couldn't find any info on it and was blown away more ppl hadn't considered doing the same! I think that a lot of ppl don't quite realize how the rotor of an alternator actually works... it is kinda intimidating seeing those big triangular teeth inside, but still. I was impressed w how it worked so it's awesome you're showing us how here!
Cheers mate!
- Jesse
Thank you!
АПАЗДАВАЕШЬ ты,брателло, такие технологии по переделке генераторов электромагнитного возбуждения на возбуждения постоянными магнитами ЛЕТ 15 НАЗАД ИЗВЕСТНЫ БЫЛИ.......В СОВЕТСКИЕ времена в СССР ХВАТАЛО ТАКИХ умельцев;-тогда аккумуляторов не хватало на всех,да и дороги они были и не долговечные; вот люди включали мозги и создавали такие электро-шедевры, что чертежи таких девайсов ложились на столы Советских Конструкторов,и промышленность выпускала уже торговые марки электро товаров.....
Another great video. Perfectly produced in all of its detail.
Now we need to see a twin alternator bike, with 2pacs.
70 Kph on that bike - Absolutely insane :D
43.496 MPH is amazing!
The prototype should could use some useful Upgrades in the suspension area..
Where did you get the large magnet from?
they are called Neodymium Magnets (Rare earth magnet) and one about that size cost about 350 dollars.
@@listenerdave101 So, your sorta saying that this here fella certainly has some very deep pockets....??..
@@prior8t2000 more like he is serious at his dedication to old rusty
@@prior8t2000 Dude, he got 5 million views on his go-kart video. That yields some nice money.
@@prior8t2000 350 dollars is nothing in the usa or canada, the cheapest rent is around 700 dlls a month and that is very rare because the actual cheapest rent on most major cities is around 1000 dlls a month for a studio (basically a bed kitchen souless room)
I love that you use the metric system! So we in the rest of the world can understand...
You didn't go further because of the cold Temperature. It safe to add at least 25% to your range numbers in the summer.
I watched your last video with some significant envy, and then you drop another with another fair step in the evolution of Rusty. Great stuff. Keep it up!
Oh, and can you provide a source for the magnet you bought?
This video was fantastic, super informative and entertaining. Subscribed
You are absolutely awesome and I appreciate your professionalism and knowledge of this subject and in the very near future you are going to be very valuable to the electric ⚡️ vehicle industry.
That's really good for a car alternator. fun for the hole family.
Basically made an electric moped with an alternator and a few batteries, I'm impressed!
(especially with the uphill performance)
Nice ! and now I've seen a couple of ur vids. I say > Yes you are absolutely capable of making your own motor <
also for a comparison my Go Ped with a 2 stroke gets well over 200mpg. On a 1 liter tank I can travel roughly 30-50 miles. Top speed is somewhere between 20-30mph. It varies by how heavy the rider is & also road terrain. You can ride for hours without a care.. except, DON'T fall ! U don't want to eat it on a scooter , lol
You should try mounting a 2 stroke to old rusty ... or maybe old rusty's brother ...
That steep hill... old rusty doesn't give a flying fuck... this is awesome...
Hey it works with a bridge as well, I am thinking of putting a step up converter to charge my battery, while braking. And I put butter under a magnet, so it did not crash hard.
Well done . Thank you.
This was realy cool love the conversion of the alternator
10.5 miles not too bad would be fine for most in-town use. I would add a second back up battery just in case
Im two
It will do double the problem is the hills and temperature.
This young man is far more intelligent than people giving him advice in the comments.
Great stuff. I like seeing young people that can teach me things. I tried to figure out where you are but failed. Probably Ontario, maybe Langley.
I figure he's around Grimsby or thereabouts, near the escarpment. The fruit trees are a dead giveaway. Violating the HTA exceeding 32kph on an electric! But I'm not complaining. Better than putting out a few grand for an EMMO.
As others have pointed out, cool temps hurt your range. Try again this summer!
I think you have power to spare. Try a larger sprocket on your alternator, maybe get it up to 90km/h. A couple etra teeth should do it. Awesome job on the bike, you inspired me to build my own. Love the detail you go into, especially the diagrams, saves me the trouble of the research. ✌️😎
Bad advice on a rusty old bike. Imagine doing 90kph when the front wheel explodes. Not pretty. Also in violation of the HTA.
@@loginregional who gives a fuck about the hta the tire exploding though definitely sketchy
@@Agilepickleunite Obviously you don't realize that not obeying the HIGHWAY TRAFFIC ACT creates a hazard. You are pretty ignorant. Stay off the road.
I have a question. At 03:50 you start pushing one of the red parts into the axle of the rotor using the puller. I don't understand how are you using the puller to push in the manner that you do. Can you explain? It seems to me it shouldnt push at all from the geometry you are using. Thank you!
@Barstools And Powertools Ahhhh. So the top poll piece is highly atracted to the magnet and he is using the extractor for stability lowering it step by step thru the extractor screw. It makes sense now. Thank you!
It's really cool to convert an old alternator into an e-bike kit. The top speed is impressive, but the efficiency is relatively bad. I generally get around 7wh/km, but the top speed of my system is 50kph and I always have a switch that limits the speed to 35.
I was pretty confused when you put in what looked like a single permanent ring magnet, but there's actually 6 magnets in there.
Dud you have no idea what you've started. You have just created a bunch of Mad scientists. Now that you've shown us; we can pull alternators out of cars in the junkyard for way cheaper than we can buy a comparable electric motor anywhere. You are truly a national treasure for us all. And trust me; just what you did by removing the material from the two sides of the center armature to add the permanent magnet simplified things a lot. And correct me if I'm wrong, but; you don't get regen until you add the permanent magnet "Right"? Thumbs up! Like and subscribe, vary cool!
His controller need a second thumb throttle or a brake sensor to initate regen, with that he can regen as he uses it
Maybe you could build a backpack that holds another big set of batteries? That way you could look like there's no batteries lol just a fun thought. Thanks for you videos! I love watching other inventors, if that's what we are called lol
next step, different wheel bearings and trying types of grease XD
the bike prolly has those crappy un sealed bearing in the hub. he should def ungrade the wheel hubs with sealed bearings. could also take the freewheel off on the rear wheel to free up more friction
Inspired by your video, I'm going to give this a try. I am looking for reliable low-cost motors to build some sprint kid karts, and this looks like it should fit the bill both power and price wise. Plus it's crazy "green" to boot. Grabbing the alternator of a donor vehicle tomorrow.
hello I'm trying to build an ebike using your video. if I'm using a 10 speed gear system do I still need a controller? also if I use an altentor can I still use a drill battery, or should I just use a torque drill as a motor?
Cool and amazing. I have an old alternator off a 79 chevy pick up. Guess what I'm fixin to make.
i can see your tires are low, always check psi on tires! you will get a better top speed!
better top speed and better range too
Maybe put the motor system on a 6 or 10 speed so you get the extra gearing and a better top end? Also would help going up hills by down shifting?
So interesting; thanks for sharing!
Yeah, the fake hand fooled me too.
It´s still working? What is the voltage it can suport and about how much time it can suport pls?
70kph is about 43mph or 37.8 knots or 0.000233495 light-seconds for us meter challenged people. Great video!
I was wondering how it is that he is reporting the figures in metric system. I thought he was in the US?
@@stephenchisadza4975 probably Canada
I am going to need that in beard seconds
Thank you! I only really understand light-seconds!
Cool DIY video & nice use of time-lapse & nice clear explanations ; Good job!
You must be in Canada, given accent, English, no traffic & snow on the landscape near the roads // lol .. metric kw / kmph / km distance / units :)
Around 1ah per km // it seems
If you need more rpm you should think about go with star conection
So what do you think of doing a 200 amp alternator and a very powerful controller and use a dc speed controller on the electromagnet to reduce the field to 1.5-2v for cruising. 12v is a bit overkill as I think they saturate around 5-6v.
Stupid question - what would happen if you kept the field windings, but instead of using a battery, just shorted the brushes to each other?
This is a pretty awesome project. You've got me wanting to find an old alternator to see what I can do.
Shorting the brushes together would still spin when applying voltage with the BLDC controller, but the magnetic field would be too weak for usable torque
Nice video, there is no limit.
damn, you really turned that motor into gold, brushless, it might not be efficient, but will probably be trouble-free for quite some time😎
Whoa! You used quite the magnet. Noice!
It is absolutely correct that you ride in a helmet! What helmet are you using?
Thanks Mohammad
Killer job bud!
You really ought to have DISK BRAKES on the bike. Great to make it go, and fast too but stopping safely and in an emergency is really important
I'm pretty sure this clever young man is more aware of this than you. As you can or can't tell he is very calculating !
@@gangoffour6690 disk breaks allow you to stop faster, which is fairly important for this build. He said nothing about him being wrong, just suggested an improvement.
OK the build was very interesting, but not nearly as interesting as the young man who built the bike. So many people today are stuck inside of a box when it comes to thinking. Example "I need an electric motor for my E-bike build. Well all I have is an old alternator. I guess I am done". Most people do not start thinking outside of the box until they are older and have acquired knowledge from living life. The exceptional people are the younger who look at a problem and figure out how to solve it. Yes I agree this knowledge was already freely available on YT, but it was not as simple as just buying a ready built motor. Kudos to the young man who not only thought outside of the box, but was willing to give it a try and get the project done.
Nice job, no doubt the permanent magnet brushless set up would be a little more efficient too increasing your rage slightly.
Excellent built and modifications, I couldn't see where is the polarity N or S of the permanent magnet, when installed on the shaft. I would like to know, thank you!
I also want to see the temperature Details of motor.
I think I saw you flip a speed limit sign!!. lol. Cool Project.
you did some great work -
scientific method, used to a
plausible degree, finds trial & error
to help make concise end results..
expanded continuations have improved
your personal presentation style,
which will always be intransigently
applicable, can easily come to meet
higher achievement..
thanks for the experiments, we'll
check out your examples and
see you in later episodes.!
~WarriorPoet~
Your measured top speed shows that this is more powerful than the average 250w or 750w eBike. You mention 99amp and 47v so that's a peak of about 6bhp !!! Anyone copying the design could scale back the voltage in exchange for more ah (say 24v and 36ah) and would get something closer to typical eBike performance with a top speed near 45kph and much better range. But where's the fun in that !
Funtastic ebike - been following your builds and I'm so impressed.
Could you try the range test on a slightly warmer day and keep your speed under 35kmh as wind resistance at speeds above that
result in a massive increase in power needs to maintain those speeds.
So impressive going up those hills though.
Well done and thanks for your video's.
Thank yoU!
Can you use the electromagnetic rotor as a sort of variable field motor by increasing or decreasing the field voltage so that you choose high torque or high rpm
yes he can, but he didn't wanted to
Would get you more range and better acceleration. If you use the "buck converter" he mentioned, it would be a simpler control point while still removing the second battery.
@@jameswyatt1304 about better acceleration i don't know, since it already was at full current with the 3S LiPo
But range would only be better if he could adjust on the fly, and that is dangerous
Old rusty v4 looking so flyyyyy 🚲💨 happy your fingers stayed safe and amazing video once again mr. wawa 💗
Fantastic!!! I am, childlike, wondering. If you have a standard e-bike, is there a way to have the battery charged by the pedaling motion? Instead of charging the battery from the grid.
You are pretty talanted !
Maybe the cold temperatures reduced your batteries capacity
The amp draw should've kept the batteries pretty warm. Besides, getting 14 amp hours out of a 18 amp rated pack is pretty good if they're recycled cells.
@@Mansare94 his pack is 18Ah but from Sony VTC5 cells, really good ones
@@foxxyytofficial New ones?
@@Mansare94 he bought from BatteryHookup
@@foxxyytofficial battery hookup has realy good cells. I think they re all brand new
This is some genius stuff, good on you!
Hey, that looks like Jordan. Awesome video once again!
I recognize those roads, you must live in the sleepy little paradise called Jordan.
I'm not sure which country you are in. But here in the UK, you'd get shot with shit big time if you were caught riding that on the road. Especially at 50mph!!! An electric bike that is above 250W and not pedal-assist only is classed as a motorcycle so you need an MC licence and insurance etc. And the machine as to be registered for the road. A very cool conversion though I might add. Well done.
The dude is somewhere in Canada. Awesome job.
Appreciate your project and could you pls show connection diagramme of three wires from stator to battery? Thanks
These diagrams are easy to find. They're the same for all 3 phase bldc motors.
That magnet is one lump eddys will gather as heat overtime in there now rather than the segmented copper of old, good effort though nice and simple mod.
Well done man, continue your doing
👍👍👍
I don't understand any of the scientific stuff you do but it's very Kool😂
I'm your new subscriber love from pakistan
I’m gonna build a dirt bike !! Will have to enclose the altinatir from dirt n mud with vent tubes to a air box !
I will try to do it! Thanks for the great video!
Ok, so I have an electric scooter I want to scavenge to make my mountain bike electric. Do I need to add another sprocket for the motor or can I just add the chain to the largest gear already on the bike and adjust the derailer to limit travel up to that gear?
Do you think the change in speed and range to almost double the figures between the Gokart build from 5 years ago and this one, was it the weight and amount of friction generated from the four gokart wheels or something else?
Probably multiple things:
Changing battery from lead to lithium (less weight and more poeer available)
Adding a better/more powerful controller and the hall sensors
And changing the electromagnetic rotor for a permanent magnet one
What's its max peak power? And max continuous power? How much energy did you save with the permanent magnet setup?
I seriously hope this video gets more views
6,503 at the time of my original comment
Why are all the videos on the cart taken down?
It looks fucken cold there. I glad you test drove it.
Is there anyway to be able to calculate how much power you'll be able to get from an alternator before going through all this work and effort? I've got a monster firetruck alternator that can put out around 400 amps at 12v. Just wondering what kind of power I'd get.
Most people that tried get around 70% efficiency and 70% of the nominal power
For a 400A 12V alternator i would surely use at least 72V and install hall sensors to keep everything under control, also choosing a BLDC controller from a reputable brand
Keep on Trucking...love your vid!
I wonder what the top speed would be on something else that's extremely aerodynamic. There's the world of velomobiles, which are basically recumbent bikes with aerodynamic fairings. They're about 40% more efficient than a road bike, which is already much more efficient that Old Rusty.
Definitely saving on battery not powering the Rotor.
Just wondering what difference segmented magnets in Rotor would do instead of the Wedged shape metal as I'm sure you'd have even more power and even less battery usage.
Sure you could do a follow up video on that ?
"Chris workshop" (without the quotes) did a video on a non-claw pole alternator rotor 3d printed
The Claw Pole design of automotive alternators reduces the cogging torque because the transition between North and South poles the windings experience is gradual.
Excessive Cogging is a real problem in motor designs.