500W 24V brushless hub motor max 165RPM high torque

[TimpBizkit]

This looks like a good set up for tackling tough hills on a bicycle, especially with 200+ watts of pedal assistance. Only about 12mph top end but good torque figures.

[electrodacus]

@TimpBizkit Yes they will be good for that but I have different use for it not a bicycle.

[TimpBizkit]

@electrodacus oh yeah you said you were going to gear it down to drive a digger at low speeds

[epsombristol]

Stupid fucking MUSAK!!!

[RedSilencerYoyo]

@electrodacus Ahhh, thank you, friend! Really, big thanks to you, I'm about to begin a video-project involving yo-yos. The air of the song just slammed me with a sense of a neon-dark city. You know, like those feinted pictures of a city at night with lights like little eyes? I was thinking working with that and a blurry, but sharp bend to each shot to make it look in synch with the music and tricks... In at at least a year. ;p

But really, thank you! :)

[RedSilencerYoyo]

Song? Please tell me the song name...

[electrodacus]

@RedSilencerYoyo I can not see what is the song name. It is form youtube library I search for a song that has about 1.44 or 1.45 seconds just a few seconds shorter than my video maybe you can find it that way.

Sorry I can not help you more.

I think the song is the reason I have so many views on this video this was my first video on youtube just to test the upload and other futures.

[RedSilencerYoyo]

@electrodacus Thank you, friend. I'll let you know if I find it. ;)

[RedSilencerYoyo]

@electrodacus Heh, one last thing: Can you remember the genre you used?

[loganll5]

friend where I can get on cruise control I'm from Venezuela ... and excellent video

me gusta la electrinoca, soy un poco novato en esto :D

[electrodacus]

@loganll5 Not sure I understand the question but if by "cruise control" are you referring to the electronic speed controller then you probably can find this on eBay but it depends on what motor you have.

You can also find the motor there, on eBay but not sure if you have access to eBay from Venezuela.

[TheDeprecator]

@cyberlord64

You need to know basics about PM-motors.

Rotation will induce an electromotive force (look up emf) which combined with the applied voltage and armature resistance will limit the current of the motor.

This means that rpm are limited by the voltage. You may increase field rotation speed, but this would imply that the motor should produce energy.

The field rotation should follow the motor. Not the other way round. This is why the hall-elements are normally used.

[TimpBizkit]

Good for hills

[bluferilottus]

cool beans.. that would be the shit on a motercycle for a reverse wen u need to back up on a slope or somthing

[electrodacus]

@bluferilottus not sure I understand but you can do forward and revers with this motor it just depends on the controller if it has a reverse option.

[bluferilottus]

i ment wat is the point of an electric hub? lol just wundering

[electrodacus]

@bluferilottus Most people use this on electric bicycles there are larger units also for scooters or even cars.

The advantage of having the motor in the hub is that you do not need a transmission so you get better efficiency.

I want to use two of this inside a mini bobcat that I can use to help me in construction but I will not have time and space right now.

See on youtube Fl3mbg4zPUQ similar to this but not just as a toy and not as nice just as useful.

[bluferilottus]

what is the point?

[electrodacus]

@bluferilottus There is no point this was my first video on youtube and I was just testing the upload.

[justlivemyway]

What is your major area of studies?

Are you an electronics engineer ?

You are knowledgeable :)

[electrodacus]

@justlivemyway Yes I'm electrical engineer but worked mainly with electronics. I used to design airbag electronics for cars.

Thanks :)

[spectrospirit]

You didn't go at full speed, but it looks like it got some torque :)

As for me, i'll try get my hands on two 1000 watts that can run on any voltage. After all, i did came across a video where a man squeezed out 400 volt from a device which easily could be portable, it had only a mere 12 volt input.

Oh.. and that was thanks to just one little magnet.

As for the music, I don't mind ;)

It has a very powerful bass and i like bass although i think the composer could be a little more creative.

[electrodacus]

@spectrospirit Is actually at full speed.

There is a limit of how much power you can get out of this motor size and 500W is about max those that claim 1000W are not completely honest. You can get even more than 1000W for short period seconds but not continuous.

Now you have the choice of high RPM (need high voltage) and low torque or low RPM and High torque.

I have two of this special order 24V 20A so about 500W my power supply was only 10A 24V in this video.

[niceboy60]

@electrodacus 24v are good but 48v are much better

.

I have a small 250w HUB with gears with a 48v battery the think fly's , check my youtube video

[electrodacus]

@niceboy60 Depends what you want.

Considering that you have the same size motor there is so much coper that you can fit inside so the power is limited. For the size I have the limit is about 500W and at this limit I can have the choice of 24V 20A max = 480W or 48V 10A = 480W First will have half the speed but double the torque and the later double the speed but half the torque.

[niceboy60]

@electrodacus quite a wile ago I was using 24v battery once I've changed to 48v battery Speed and torque doubled

[electrodacus]

@niceboy60 This is because the motor was designed for 48V so using it at 24V was using just a quarter of the power or half depending on controller.

This motor I have was ordered to work at 24V so it has tick wires able to take 20A continues. It will work also at 48V but with only 10A the speed will double but the torque will go down.

If I use 48V 20A it will get to hot and damage the wire insulation.

I will not use this on a bicycle is for a different project.

[niceboy60]

@electrodacus the battery voltage determines the RPM of electric engine.

.

More battery voltage = more RPM in the electric hub , there is no point in complicating thinks with torque etc..

.

your engine 500w hub with 48v battery fly's

.

watch?v=YS1UkcUalUI&feature=re­lated

.

24v controller can be used with a 48 battery

[electrodacus]

@niceboy60 I'm an electrical engineer I think I know what I'm talking about.

Power is speed multiplied with torque same as electrical power is voltage multiplied with current.

If the motor is 500W You can give the motor 48V at max 10A continues, you can give more current for short pulses but the average need to stay at 10A for the motor to not get to hot.

[niceboy60]

@cyberlord64 I have small 250w hub design for 24v

.

I've installed a 48v battery the think now fly's

.

Watch ,my video commuting in a small 250w to work with a 48v battery

[cyberlord64]

@niceboy60 yes but you didn't get more rpm. you got more torque. brushless dc motors (just as synchronous ac motors) are controlled only by frequency. still it is impressive that your motor and controller can handle this voltage. are you sure it was not designed for 48v?

[niceboy60]

@cyberlord64 all I know since I have changed from a 24v battery to a 48 v

.

Every think Increased to (double) Torque & top speed

.

[niceboy60]

@cyberlord64 refer to this video it explains what happens to Electric Hubs

.

when voltage is increased

.

watch?v=2rfHDzPMP_k&feature=re­lated

[cyberlord64]

@niceboy60 Not really. this video explains (very crudely) the operation of a permanent magnet dc motor, or a series wound dc motor. The motors inside the hubs are brushless dc motors (which have more in common with synchronous ac motors than the ones above) and their speed is controlled by frequency only. The only effect you get from changing the voltage of such motors is the change of torque.

[niceboy60]

@cyberlord64 You are unnecessarily complicating things

.

I can only speak from my own experiences

.

More voltage = HUB's go faster

.

No need to complicate thinks with torque & different types of hubs

[cyberlord64]

@niceboy60 i am not complicating anything. this is how these things work. more voltage = more torque, higher frequency = more rpm. it's actually quite simple

[electrodacus]

@niceboy60 This motors are brushless DC motors and have a linear relation of frequency with speed and current with torque.

Not to mention that a 500W motor is a 500W motor if you put 1000W continues in to the motor it will overheat and melt the isolation.

If you make a motor spin faster you will need to reduce the torque so that total power is the same for this motor size.

[niceboy60]

@cyberlord64 my hub before I've changed from 24v battery was running exactly at this same slow speeds 0:48

.

At this speeds you are no faster than a normal cyclist

.

When I've changed to 48v the rpm went double as result top speed increased from 10 mph to 18 mph

.

pedal assist mode went from 15 mph to 24 mph

.

so is not just torque is also hub top speed

[cyberlord64]

@niceboy60

If you turn your bike upside down, plug in the 24v battery, measure the rpm, then plugin the 48v battery, and measure again, you will see that the rpm will be tha same. The speed difference is apparent when you put load (namely your weight) on the motor. which is as i said many times before, a torque difference.

[electrodacus]

@niceboy60 You probably had a motor designed for 48V so is fine.

The controller has sensors and controls the frequency depending on how fast the motors go from one pole to the other.

At 24V you motor was used at half the max power.

My motor is designed for 24V, It was a special order most are designed for 48V or more.

[staver76]

@electrodacus I have a similar motor, and a same threaded valve on your motor *the side opposite to the power wire* Is that for disc brakes?

If so, do you know what the disc brakes are called for that type of thread? I haven't found any :S

[electrodacus]

@staver76 Sorry I do not know to much about bicycles I ordered my motors for a different project they will not be used for bike and there are different standards for the thread.

But for brakes you usually get a different mounting system with 4 or 5 screw holes in to the rotor so not sure if you can use the one you have for brakes.

[staver76]

@electrodacus Oh, ok, Thanks for replying.

[Nevawake]

@electrodacus dont worry i get bad moods. Depressed gene. + sleep deprived. was more interested in the tech. cheers 4 better reply.

[Nevawake]

the fucken music!!!

[jjFishHookjj]

What camera are you using to record this video? - It looks fantastic! :)

[electrodacus]

@jjFishHookjj On this video is Sanyo Xacti 1010 all the 1080p videos are with this camera the 720p are done with Panasonic Lumix DMC-G10.

Probably a better video than this with the same camera is the Moon video part 2 on my channel.

[electrodacus]

I did not had time to measure the torque at start-up but id depends more on the driver than on the motor.

Is not for a bicycle it will be used in an electric tractor a small model of a Bobcat I have about half the components but I have no place to build one for now.

I will use two of this one on each side and a chain transmission of about 8:1 so I should have enough torque. I also have some 24V electric linear actuators for this project.

[g1cast]

cool. how is the torque at startup?