Ebike 7000W project

toula.tomas · Nov 19, 2014

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rhinejuice · Nov 19, 2014

Looking impressive! Nice work. Subscribed

arkmundi · Nov 19, 2014

I'd say so. Some details would be - components used, things like that.

devman · Nov 20, 2014

Can you post more details? Motor model? Battery? Controller?

toula.tomas · Nov 20, 2014

Motor

HPM-5000B 2-7 KW

Bat 24x LIFEPO4 3.2V 20AH ALU
Controler meantime KEB72451X,24V-72V,220A,4.5KW

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toula.tomas · Nov 20, 2014

I want to buy VEC300-72 72V 100A 300A 190*180*50mm (2.5kg) USD452

spinningmagnets · Nov 20, 2014

Well done! I am looking forward to how this turns out...

rahlee · Nov 20, 2014

I want to know how reliable the motor your using really is. I was thinking on going the same route but i keep hearing that golden motors arent so great

rborger73 · Nov 22, 2014

rahlee said:
I want to know how reliable the motor your using really is. I was thinking on going the same route but i keep hearing that golden motors arent so great

I've got almost 7,000 miles on my Mp3 already this year. One failed internal controller which was replaced under warranty. Very happy with mine, your mileage may vary.

arkmundi · Nov 22, 2014

Thanks for posting pics & details. Now just need some vids of your eBike in action! Best.

r3volved · Nov 22, 2014

That's a slick design!
I like it a lot! Looking forward to seeing progress

toula.tomas · Nov 28, 2014

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toula.tomas · Nov 28, 2014

I'm not sure

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toula.tomas · Nov 28, 2014

JPG by dealer

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knighty · Nov 29, 2014

I have the same BMS, it came on a 72v lifepo4 pack straight from bmsbattery

when I burnt the first one and replaced it, the charger/controller negative goes to p-

and you ignore the other connections

izeman · Nov 29, 2014

that's a great project. and from what i can see you're investing some serious money. that will be a great bike for sure.
i guess you are not installing a bike chain?! what kind of freewheel do you use on the rear wheel?
i just saw the two little "rings" behind the motor. are you planning to install the bottom bracket there? this can work if you don't intent to pedal at all, but if you plan to pedal it will break for sure. i don't know if you're aware of the fact that the bottom bracket needs to handle forces similar to a car's crankshaft, especially when you are standing and pedaling. those small aluminium rings will break off if you do so, and if this happens i can guarantee a very painful crash.

toula.tomas · Nov 30, 2014

izeman said:
that's a great project. and from what i can see you're investing some serious money. that will be a great bike for sure.
i guess you are not installing a bike chain?! what kind of freewheel do you use on the rear wheel?
i just saw the two little "rings" behind the motor. are you planning to install the bottom bracket there? this can work if you don't intent to pedal at all, but if you plan to pedal it will break for sure. i don't know if you're aware of the fact that the bottom bracket needs to handle forces similar to a car's crankshaft, especially when you are standing and pedaling. those small aluminium rings will break off if you do so, and if this happens i can guarantee a very painful crash.

I will focus on this place