How about building for top speed?

A

Aquaman

New Member
HobbyKing R/C Hobby Store : Turnigy 80-100-B 130Kv Brushless Outrunner (eq: 70-55)

I want to have an electric bike that can go 50 mph or so for about 5 miles down a very gentle hill. I have been flying electric RC planes a little and I am really impressed by the LiPos power to weight ratio. I know they are probably not the smartest investment for bikes, but I have to get up this grade as well. How would I gear this? I have been looking at all the different rides and drivetrains and I am impressed with all the innovation I have seen. What would it take to have a pedal-less bicycle (besides a total disregard for the Motor Vehicle Code) with just the brushless scooting it along?
 
It would take 72vdc.

Ask me how I know, lol.

Oops, sorry, I responded before reading your link.

I used 72vdc on a front hub. Top speed was 27mph, but the range was an awesome 54 miles.
 
I have hit 70 mph with RC motors.

There is a lot to know and a lot of work getting the RPM low enough to drive the wheel. However, nothing else comes close to the power density of brushless/lipo setups. They are the Formula 1 of E-bikes.

Matt
 
Aquaman said:
HobbyKing R/C Hobby Store : Turnigy 80-100-B 130Kv Brushless Outrunner (eq: 70-55)

I want to have an electric bike that can go 50 mph or so for about 5 miles down a very gentle hill. I have been flying electric RC planes a little and I am really impressed by the LiPos power to weight ratio. I know they are probably not the smartest investment for bikes, but I have to get up this grade as well. How would I gear this? I have been looking at all the different rides and drivetrains and I am impressed with all the innovation I have seen. What would it take to have a pedal-less bicycle (besides a total disregard for the Motor Vehicle Code) with just the brushless scooting it along?
Click to expand...

Whatever you do, don't get caught by CHiPs, or you'll lose your bike to "da man"!
 
You must log in or register to reply here.
Back
Top