52v 14s 1000w rear hub need more speed.

[hogflht]

This is the kit I bought.

https://www.amazon.com/gp/product/B00Q8JT9H2/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1

The controller is a KT48ZWSRL-lcd. I get 25mph. I put a KT48ZWSRKTB-SJT02LB controller on it and got 28mph. What do I need to do "buy" to get 30-45 mph?

 

[E-HP]

This is the kit I bought.

https://www.amazon.com/gp/product/B00Q8JT9H2/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1

The controller is a KT48ZWSRL-lcd. I get 25mph. I put a KT48ZWSRKTB-SJT02LB controller on it and got 28mph. What do I need to do "buy" to get 30-45 mph?

72 volt battery and controller.

 

[dogman dan]

72v battery, 72v 40 amps controller. 40 mph out the door, 35 most of the ride.

But you might be happy enough with 62v. More amps of 52v better than less, but mostly for getting to 30 mph faster, and killing a battery faster. ( meaning taking a battery made for 20 amps, and pulling 60 from it, if the bms allows it.)

Best advice if you are building a small motorcycle with pedals, start with a sturdy frame made for this type thing. Then put moped wheels on it, $1500 forks, $500 brakes, etc. MTB's are not really made with the right wheelbase for 40 mph all day.

You can build a 40 mph bike from a cheap mtb of course, so many of us have. But best used at 30 mph, saving the faster speed for short bursts when you need it, like crossing a busy street. Just don't wheelie off it in the middle of that busy street. :lol:

 

[999zip999]

DOMINTY 48-72V 2000W Electric Bicycle Brushless Speed Motor Controller for Electric Scooter e-Bike ATV Go Kart Tricycle Moped
Plus a good battery ,cheap batteries are Not just cheap

 

[E-HP]

72v battery, 72v 40 amps controller. 40 mph out the door, 35 most of the ride.

The visual representation, A=84V hot off the charger, B=72V nominal


https://ebikes.ca/tools/simulator.html?motor=M2807&batt=cust_84_0.05_24&cont=C40&hp=0&axis=mph&frame=mountain&autothrot=false&throt=100&grade=0&cont_b=C40&motor_b=M2807&batt_b=cust_72_0.05_24&hp_b=0&bopen=true

before, 48V battery, assuming around three quarter charged
https://ebikes.ca/tools/simulator.html?motor=M2807&batt=cust_51.3_0.05_24&cont=C40&hp=0&axis=mph&frame=mountain&autothrot=false&throt=100&grade=0&cont_b=C40&motor_b=M2807&batt_b=B4823_AC&hp_b=0

 

[dogman dan]

Oh, and I forgot to mention, that type of motor lasts about 45 min continous at WOT, 72v. So 10 ah lipo is a good battery choice. Strong enough to do the trick, but 10 ah runs out just before the motor melts.