I recently purchased a used Goped ESR750. After a few trips around the neighborhood I noticed the batteries would die out around 15 minutes. They are used so understandable, The stock 750w motor speed was ok, but I know I wanted more! So, I started the hunt for battery alternatives to get into lithium batteries for increased range and torque. Seemed like the few options I had were way to costly from the companies that make these for the ESR line. So after a long search online and reading many forums I decided to just convert this entire scooter to a full brushless outrunner motor system with a flat Lithium battery pack.

I also decided to ditch the chain and go to a full belt/pulley system to make it quiet and have less maintenance.

The scooter now hits around 25mph and 10-12 mile total range.

The biggest surprise was the weight reduction. After pulling out the old 4 SLA batteries and 750w motor and replacing both with the new motor and flat battery pack, I lost over 20 pounds on the scooter. Huge reduction!

The new motor is about 40% the size of the old one. I drilled out the hole pattern for the new motor on the existing rear support bracket.

Battery Info:
Range: 12-15+ Miles (19.3-24+ Km)
Top Speed: 30+Mph (48+ Kmh)
Nominal Voltage: 44.4V
Capacity: 9000mAh
Power: 388.8Wh
Cells: Samsung 30q
Weight: 76oz (2.15Kgs)
Connection: XT60 Female connector
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Battery Dimensions:
Length: 13.1" (334mm)
Width: 5.3" (135mm)
Thick: 1.3" (35mm)
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Motor KV: 180kv
Model Type: 6374
Motor Wind: 13
Idle current: 1.7A
Motor Resistance: 0.053Ohm
Max. Power: 3250W
ESC: 80-100A
Connectors: 4mm Bullet
Shaft Diameter: 8mm
[ Ссылка ]
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VESC Controller:
BLDC ESC 4.12
Current: 50A continuous / 240A peak
Voltage: 8V-60V (Cells: 3-13S LiPo)
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I modified the wood deck to accommodate the new battery pack to be mounted under the deck top.

Rear 72t Pulley was custom 3D printed. Also 3D printed the internal mount case for the VESC controller and cable management in the existing bottom tray.

All parts were purchased from mboards.co. Great company! They provided all the DIY eSkateboard parts I needed for the build. Parts were shipped quick! The owner has a few videos on YouTube explaining the different components I listed above.

Had a great time upgrading this scooters technology. I had to order a 15t front pulley gear as the shaft bore diameter on the new motor is 8mm with a set screw.

Photos: [ Ссылка ]



This is still a (work in progress)

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