How much would 6 12v 7ah batteries last me when riding?

Assuming you intend to put them all in series to make a 72v nominal bank, the total of 6 batteries at 7ah is 7 amp hours. So if this controller realisticly pulls 50 amps as rated, 7 divided by 50 is 0.14. 0.14 times 60 minutes in an hour means about 8.5 minutes run time at full throttle till bank depletion. Of course, if you are using half throttle at half the amp draw, you get twice the time. See?

Can i safely use a 20s lipo battery 4000mah and 25C for the 72v?

Yes . I have used similar set up and worked fine . This motor can also be overvolted but that will lower its total lifespan.

I want to buy this motor to put in a dyi drift trike, do you think it would have enough torque for that?

Motor is capable of producing 5Nm of torque. Golf cart motors are around the 7-12Nm range. Higher gear ratios give more torque but less top speed.

Will this motor run full-speed in both forward and reverse?

The motor will run at 100% speed forwards and 50% speed in reverse.

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BLDC 72V 3000W Brushless Motor Kit with 50A Controller, Throttle, Pedal | Kunray 24 Mosfet BLDC Controller,Foot Pedal Throttle,Motor Kit for Electric Scooter Engine Motorcycle DIY Part Conversion Kit

Product ID: 98403525

Details

Brand
Kunray
Horsepower
3000 watts
Model Name
Electric DC
Speed
5800 rpm
Voltage
72 volts

⚡3000W peak power

🌀Max speed 5800 RPM

🔋72V high voltage system

R12952

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Description

⚡ Upgrade your ride, dominate the streets — power meets precision!

SMART 50 A CONTROLLER - Advanced 24-MOSFET controller with 3-speed modes, reverse, and e-brake for ultimate ride control.
SMOOTH SILENT RIDE - Brushless motor design delivers low noise and natural air cooling for a premium riding experience.
PRECISION ENGINEERING - Durable aluminum body with full copper coil ensures heat resistance and long-lasting reliability.
POWERHOUSE PERFORMANCE - Unleash 3000W of brushless torque for thrilling acceleration and hill conquering power.
UNIVERSAL COMPATIBILITY - Complete DIY kit fits electric scooters, mini motorcycles, go-karts, and more for versatile upgrades.

The Kunray BLDC 72V 3000W Brushless Motor Kit is a high-performance electric motor system featuring a robust aluminum body, full copper coil, and a smart 50A 24-MOSFET controller. Designed for electric scooters and DIY electric vehicle projects, it offers up to 5800 RPM speed, 3-speed modes, reverse function, and e-brake support, delivering a powerful, quiet, and reliable ride for loads up to 200kg.

Specifications

ASIN	B07KR2FN89
Best Sellers Rank	#168,448 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #26 in Scooter Motors
Brand Name	Kunray
Customer Reviews	4.0 4.0 out of 5 stars (168)
Horsepower	3000 watts
Item Dimensions W x H	5.28"W x 4.41"H
Item Weight	8 kg
Manufacturer	Kunray
Material Type	Aluminum Copper Rubber Acrylonitrile Butadiene Styrene
Model	kunray
Model Name	Electric Brushless DC Motor
Part Number	kunray
Speed	5800 rpm
UPC	734779299371
Unit Count	1 Count
Voltage	72 volts

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R12952

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In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Africa.

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