Calculate Ebike Speed

[mlcook19]

I am trying to find a way to estimate the speed of potential ebike builds that I am looking into, but I am not having much luck. I am really looking to put together a quick bike, which isn't an issue where I live since 1. There are little to no bike paths so the added speed wouldn't be a danger to others 2. There aren't many bikers where I live and 3. There are no laws dictating the maximum speed for ebikes where I live in the US (unless I am simply unaware of them, in which case I would appreciate someone educating me!).

 

[kitchenman]

Have you got a particular bike in mind? A recumbent would be the fastest due to less wind resistance. (something I am hoping to show in the coming weeks! )
Have you got a particular route in mind? Have you got no hills, moderate hills, many hills, etc ...

 

[10mph]

You can use an online calculator to predict speed based on the power output of your motor (in Watts). There are many on line - here is one.

 

[banbury frank]

Hi

Micook19

Please go to the link below look at the nine continents motor all will be explained

they are in Canada so you can buy from them

Tire Dia X volts X RPM = MPH

Click on picture off motor to see RPM per volt



The Grin Cyclery


We are the UK Distributor for Nine continents Motors


Frank

 

[flecc]

There are no laws dictating the maximum speed for ebikes where I live in the US (unless I am simply unaware of them, in which case I would appreciate someone educating me!).

Sorry to disappoint you, but federal law in the USA limits e-bikes to 20 mph. However, I need you to tell me which state you live in, since as you will know, state law can override federal law. Tell me that and I'll post back an answer, but meanwhile, here is the federal law:

The U.S. Senate passed SR 1156, defining electric bicycles in the country. Then President, George W. Bush signed the law and is in full effect at the moment. The SR 1156 bill states that the Consumer Product Safety Commission is the one in control of electric bicycle. Electric bicycle is defined as a bicycle if it has pedals, able to being propelled by those pedals, with an electric motor of no more than 750 watts, and a top speed of 20 mph. If your electric bicycle falls into the category of a bicycle then, you do not need a registration, license or insurance.

 

[mlcook19]

I live in New Mexico, and the path I take is about a 4 mile commute on a back road that I see a car in once every few days. It is downhill on the way to where I work, but the return trip is ata moderate incline for the trip back.

 

[flecc]

New Mexico hasn't made any state law on e-bikes, so federal law only applies. It sounds as though you hardly need worry in a region like that though. Even here in Britain the laws on e-bikes are rarely enforced.