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Need help to build my first Electric Motorcycle Answered

Hi, I'm new to this e-Bike technology. I need help from the experts to figure out some details for my electric motorcycle. Here are the parameters of my motorcycle I've planned for : 1) Gross weight of the bike : 140kg + 100 kg (passenger/rider). 2) Wheel diameter : 18" (or 20") 3) Max speed : 180 kmph. 4) Max distance to be covered : 260 km (in a single charge and upto 95% of the battery (charge) usage at a constant speed of 100 kmph). Now, please let me know about the following details: A) Motor-BLDC (its power, torque, watts, hp, rpm, etc.) B) Battery Pack (Watt-hour/Amp-hour/Volts etc) C) Sprocket Ratio and number of teeth for both motor sprocket and wheel sprocket. Please reply.

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akik007rickharris

Answer 8 months ago

Thanks for the excellent video links. Is there any link to a tutorial video where the DC motor configuration is described elaborately..?

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akik007rickharris

Answer 8 months ago

Thanks very much rickharris. Those are quite helpful videos. Could you help me to find out some links where the motor and battery pack relationship is described in detail.

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rickharrisakik007

Answer 8 months ago

Google like I did! - OK I have build electric vehicles so I have some practical experience. 500 watts is going to get you up to something like 30 MPH (50 KPH) - You need to make your vehicle as light as possible. Weight robs energy from the system.

You battery pack will control how far you can go. Your motor controls how fast you can go. Your budget controls what you can build.

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zimou30

8 months ago

Hi everyone,

My wife was wanting a project to work on and suggested an electric dirtbike from scrap parts.

We have found a frame at the local scrapyard for $100 and 2 Optima yellow top batteries (2nd hand)

I am planning on a chain driven direct drive bike. The main goal is for it to have a LOT of low end torque for fun off road. Top speed of 60km/h would be fine, a range of even 20km would be fine as well.

I am thinking of a brushless motor so I don't have to worry about brushes to replace. Here are some of the motors I am considering:

* Motenergy ME0708 48vDC, 6-12kW (old badged eTek motor) $450
* Motenergy ME0709 72vDC, 8-15kW (old badged eTek RT motor) $525
* Motenergy ME0907 48vBLDC, 5-15kW $450
* Motenergy ME0201013001, 48v BLDC, 5-10kW $450

Any suggestions would be helpful as well as links to youtube or EVALBUM or blogs to show how well a motor performs. Here are some photos of the bike frame we have got.

see : https://vidmate.vip/

https://getmobdro.com/

https://showbox.onl/

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akik007iceng

Answer 8 months ago

Thanks very much iceng, for your reply and the link to a detailed understanding of motor designs. It's written in a quite interesting manner and I'm yet to finish it up.
By the way, is it possible to ask a manufacturer to make a motor for me according to my specifications..? Thank you once again.