How to Know What Power eBike to Get?

What’s the best ebike? How fast can a 1,000 watt ebike go? Here I go over the top speed of different e-bikes compared to their watts.
Battery volts and controller amps play a role in ebike top speed, however hub motor watts is the main source of power.
In this video we compare different power levels to see how fast a 750 watt, 1,000 watt, 2,000 watt, 5,000 watt, and 8,000 watt ebike can go.
750w e-bikes are compliant with most local laws and have a top speed of 28mph making them a class 3 ebike.
1,000 watt e bike such as the 52 volt Ariel rider X class can max out around 35mph.
2,000 watt e-bike like my 72 volt ebike conversion kit have a max speed of 42mph.
3,000 watt hub motors are approaching electric motorcycle speed with a top end of 50mph.
5,000 watt hub motors can reach a speed of 60mph

[spirobel]

ebike boy is at it with the most straight forward explanation on this topic that I came across so far on youtube.

[TheGTIman]

The idea of this video is good, and the watt vs speed give a good approximation of top speed. However, the info is not correct. A 1500Watt motor is/should be rated for 1500 w continuously, but it will easily provide 5000 watts wheel power if you feed it 8000 watts of battery power. Also, a ‘5000 watt’ hub motor can be more efficient at lower speeds (say 35 mph) than a 1500 watt hub motor. The motor size mainly determines the maximum heat (watts) it can shed and the maximum amount of copper fill that will fit in the motor. So a big motor can be just as efficient and slow as a slow motor, if you feed it less power. It is heavier though, so indeed you should consider the power and amps and top speed that you want, and choose motor, turn count, battery, bms and controller accordingly. Everything should be in balance, although it is always nice to have some spare capacity in your battery, bms and controller. Then you could always increase the power if you want to…

[massterrbarber]

The most important thing for me is the range I want to be able to stay out there longer. Go further plan my trips just go out for fun.

[massterrbarber]

Yes, you have power the way that you have your bike set up is where I’m trying to get it except I have to use a different system because we have different electric bikes. You did a very good job with yours very good. It’s gonna last a long time a lot of people they ruined their electric bike by just worrying about speedsoon as they get it and then they’re burning out the motor they’re burning out everything not knowing the first step should be range and getting to know your bike first unless you’re already professional you know whatever

[lawrenceterbell]

I built a 72 V e bike with Crystalite hub drive speed motor on a KHS mountain bike. I bought the hub, battery and controller as a kit from HPC. The battery goes in a bag with the controller bolted on to it. It has no peddle assist, only throttle. The disk brakes it came with were inadaquate for a heavy bike like this, so I put on Shimano hydraulic brakes. This was a good idea because the stock brakes were really weak. I also replaced the front derailleur with a single chain ring since I only peddle at slow speeds and rely on the throttle most of the time. The top speed is over 40 mph. I think I got it up to 45 mph once, but I usually ride at 20-25 mph.

[overland]

My 500w hub motor with 48v 13ah battery would do 30mph max and would range @ 20 miles on throttle easily (i never actually ran the battery out). My 750w mid drive 48v battery will do 34mph and i weigh 236lbs and the bike has a 27.5in wheel . Everthing you say is true and you provide some great information.

[annalee]

Great vid. Answered the exact questions I had, but with the 12 volt light and bluetooth lock was something I never considered or even knew about. I want to build it right the first time.

[massterrbarber]

100% correct I just got my electric bike as well and I love it and yes speed I got mines. It only goes 15. I’m already waiting for some items to come in to upgrade the speed. I’ll be going after that will be 40 miles an hour and that’ll just be my top that’s my just in case that’s my speed just in case I need it. I have it that’s gonna be my third mod2nd mod will be 22 and third mod will be 12 and I leave it on too if I’m just cruising around and I could still go above that if I hit the throttle like you said it’s about being safe one of those guys that used to have electric bikes just across the street I thought I was gonna get hit by an electric bike before I get hit by a car that’s how fast they can go and even in a bike line isn’t all safe. You always have to have a finger on the break the back break

[thebestjaiser]

I have the 3000w kit and it gets roughly the same speed at the same watts as yours, so you don’t really lose much power at all. The hub is a little heavier but it’s a negligible difference.

[salviaaable]

true words dude! i have 3000w hub motor on enduro ebike frame, and 72v 30 ah pack/ honestly it'S more like 26-28 AH with 50A bms, short burst up to 90, i had an 80A controller limited to 50A but it was already to much for my battery, i can go up to 70-80 KM/h but it's not worth the amount of power it needs to get up over 70 KM/h so iam trying an sabvotonsvmc 45A controller (the same as inyour bike) and that shoud fit well!

[nicod]

A 750w geared hub at 72v at 30A will go about the same speed and extend your range drastically, also you'll get 90nm of torque...

[dthoughts]

Lol
Exactly right
Everyone asks how fast does it go 1st

[mmmasterscross]

Thanks for sharing your video! Helpful and interesting, informative!

[ripprjak]

Exactly you have to ride the e-bike differently which includes talking trail and paths.

Doing 50mph all the time in a long stretch of road is not recommended because it eats through battery like juice.

I take the road only when I need to. If there’s a bike lane then it’s a good excuse to slow down a bit.

If there’s a path or trail I’ll definitely take that as well.

All of that is for nothing than preserve as much battery as possible.

Unless you can afford a 72v with like 200+ ah battery. Then you can throttle all day log

[zarb]

a 3000w motor does NOT draw more amperage than a 2000w motor, It depends on the load put on the motor not the wattage of the motor.

[eonreeves]

I get 28mph out of a 500w hub 48v battery. I ride it to work 6 miles wide open and the hub hardly warm when I get to work.

I'm about to drop 60v in and see what it do. Worst case I blow the hub and have to go bigger 😂

[memnoninfinit]

Just because you can't afford the 40 to 56 amp hour 72v battery doesn't mean the 8000w and up Ebike kit or components are overkill. It's honestly what everyone wants subconsciously. That's why I'll have one in 2 months.

[qolspony]

Very good information. Thank you! I got a 1000 watts motor and 12 amp hour battery.

[fang]

I wouldn't fret too much on your first build not being ideal. I went through 2 iterations to get a bike I like. Although I started with a folding bike ebike I got for 400 bucks, then decided to build my own. I ended up using Grin Technologies GMAC 8T with Phaserunner controller and paired that with a 72v system. Your speed estimates are kind of misleading, your max reachable speed can be extended by using flux field weakening while sacrificing range.

[WesternIronwoks]

so my old ebike and my current gasbike i will go top speed all the time but I had a 36v 500w ebike and now have a 39cc 4 stroke so the top speed wasnt faster then traffic ever. my new bike is gonna be 48v and 1500w so maybe i might not go full speed, we shall see in a couple days.