Top speed?

[tombenn444]

What's the fastest you've ever gone on a build? What was the build?

Also I was wondering; If I have two 1500w rear hub motors (one for the front one for the back), the speed limiters have been removed, and have both been overclocked to push 120% power, then would I be able to go faster than with just the one motor or would I just be able to reach my top speed in less time? My theory is it would increase my top speed since the second motor would reduce strain on both motors; this allowing greater rpms at 120% power.

 

[Wrench]

You didn't say Gas or Electric

My Whizzer went 80 mph down the freeway, on the back of my SUV

But seriously she will bury the needle on the speedo @ 50+ mph

Good luck with your electric Bike Build
If you can afford a Stealth E Bike you'll go 0-50 in 2.4 seconds

 

[ImpulseRocket]

Not all hub motors are created equal. exceeding the rated capacity of those motors will make them run hotter and turn higher RPM. Of they exceed their ratings they won't last very long. If those motors are only rated to 1500W, then bumping up the power 20%, aka 1800W, then the question is, how are you seeing this 20% overclock? Current or Voltage? Your power ramp up curve will also be important for both component life as well as safety.


Dual motors will have a higher top speed, but the relationship is not linear. This can easily be seen on various models of e-bike that come with the option to have one or two motors. The dual motor units are indeed faster, but only by a few MPH. That does have a lot to do with the two motors working together to overcome their individual inefficiencies and "helping" one another along, but a single 3000W hub motor will have a higher top speed (around 45-55mph) while dual 1500W motors would likely top out at around 40mph.

 

[cloakedvillain]

Understanding Everything about Hub Motor Drive Systems - Spezi 2020 Live Presentation

In this presentation, Justin will be sharing many things from his 15+ years of extensive experience with all kinds of hub motor ebike systems. Topics will in...

www.youtube.com

This goes over just about everything you might want to know about hub moto performance. About 50 minutes in he covers power ratings specifically but its worth watching it all. I know its long but throw it on 1.5x or 2x or on 1x while doing chores. Its worth it.

Main thing you're looking for is the amp rating not the power rating. And you'll want to play with the grintech motor simulator. It give you invaluable ino on what the system could do in the real world

 

[tombenn444]

Nice, I'm going to watch that during work today. I got the motors from Amazon it's one of those conversion kit motors. Does anybody know a good place to get powerful motors on a budget I was thinking about Alibaba but I don't know if they're legit

Understanding Everything about Hub Motor Drive Systems - Spezi 2020 Live Presentation

In this presentation, Justin will be sharing many things from his 15+ years of extensive experience with all kinds of hub motor ebike systems. Topics will in...

www.youtube.com

This goes over just about everything you might want to know about hub moto performance. About 50 minutes in he covers power ratings specifically but its worth watching it all. I know its long but throw it on 1.5x or 2x or on 1x while doing chores. Its worth it.

Main thing you're looking for is the amp rating not the power rating. And you'll want to play with the grintech motor simulator. It give you invaluable ino on what the system could do in the real world

 

[Sidewinder Jerry]

On my 4 stroke 33cc 1.6hp engine I've gone 55 mph. Oh by the way, I was going down a long steep grade in the mountains ⛰. Speed is speed regardless of how it's being powered.

 

[Gordy]

I hit 40mph on a flat road with my BT80, and on the one hill I ever took it down I hit 55 (also done on a pedal bike before) and trust me, Cranbrooks are not built for that kind of speed

 

[Risk Man]

Here in SW Florida Flat lands, I have been to 50mph on the Gator Whizzer...40 on Risky's ride and 40 on the Motoped. All too fast for my comfort level on bike frames....With the Heavier Ambassador Frame (but still weak wheels) not sure if I will feel safer or not. Seems to me the tires are my biggest concern at that speed. A blowout front or rear I think will be Catostorphic.

 

[cloakedvillain]

Nice, I'm going to watch that during work today. I got the motors from Amazon it's one of those conversion kit motors. Does anybody know a good place to get powerful motors on a budget I was thinking about Alibaba but I don't know if they're legit

If you want really powerful golden motors is legit. Unsure of the lead times but yeah. It's going to be more cost effective to buy a surron/talaria unless you want to make your own battery pack and want to deal with tuning controller parameters on top of the mechanical side. https://goldenmotor.bike/

 

[tombenn444]

Wym by tuning controller parameters? I can make battery packs I have a spot welder and longevity isn't a concern of mine. The laws are loose here and I ride twenty miles everyday to work. I currently have two 48v 13ah packs. I top out at 40mph downhill and 32 and flat ground. If I could go just a little faster to keep up with traffic would be ideal. But of course I realize a little faster is never gonna satisfy me but thats a topic for another day.