Motorcycle hub motor on a dirt bike part 2

YZ 125 build up using a 603 hub motor from EnerTrac with a 100 volt 15 AH pack capable of over 300 amps peak

Category:

Science & Technology

Tags:

• Motorcycle hub motor
• Dirt bike
• Electric motorcycle
• YZ 125

[markkccycle]

the motor is power rated not voltage 144 volts is fine but as you go faster the energy need goes up exponential so if you watch the motors temperature and do not exceed 130C winding temp and 70C magnet temp then you can use any voltage that is practical

[gorodph]

Yeah, great bike. I'd like to make an enduro bike with this sweet hub motor soon. Have you tried it in off road? Can you make some off road video with this bike? It would be nice to see what this motor is capable of.

[markkccycle]

@gorodph

look at the video EnerTrac does Dirt Bikes

[rhadiem]

Cool bike, can it do a wheelie? I guess a downside with a hub motor is you can't control it's gearing. I'd like to do something like this but make it into an electric supermoto. What's your top speed and range on it? Also, what speed controller / battery pack are you using.

[markkccycle]

@rhadiem

Yes with the right controller it will do wheelies

Gearing is controllers by wheel and tire size

At 100 volts about 50 MPH 80 Kph

Kelly controller KBL series

Battery Lithium Polymer 4P24S

[circuitdotlt]

where's the wheelie or burnout at least? :)

[markkccycle]

Didn't want to trash a 100 dollar tire just yet

[sprocket2cog]

@rhadiem your right there is no gearing in a set up like this, but others feed the power though a conventional cassette style box. but electric motors provide maximum torque at minimum rpm's, so by using pulse width modulation at higher speeds you can reduce power use for the same speed, not unlike gears. you do it in software and circuitry , not in the mechanical hardware.

[MetalSonic5555]

I've been mulling this type of bike, haven't really found out what to do though, I haven't been able to find a good balance between cheap and easy for someone who is far from a pro. The hub motors I've found are like 1200 alone, which is more than the bike costed when I got it. and the other types are a bit less expensive.

My question would be which would be easier and obviously which would be less expensive, or is the more costly one worth it in it's simplicity in installing it?

[gorodph]

Is there any maximum recommended voltage for this motor? If I want to ride faster, can I use for example 40 TS 40Ah LiFeYPO4 cells in a pack? Is 120+ Volts too much for this motor? Or is it able to go up to 144 Volts?

[gorodph]

@markkccycle I'd like to but when I click on the video it doesn't play and it says this: "This video contains content from Sony Music Entertainment, who has blocked it in your country on copyright grounds.

Sorry about that."

Any chance to watch this video uploaded without music? Thanks.

[skadamo]

Might be even more fun with a 17" rear wheel :D Awesome!