Hubzilla eBike chopper build

[Colossus]

Hi all! Just getting started on planning my first eBike and hope to upgrade later to a full blown electric motorcycle. I'm designing a chopper-style frame and studying welding to get it done. Considering the hubzilla motor because I like having more power than I need, just in case. I live on a hill but most of my commute is on a flat road. What size rear wheel and power supply should I have to get up the hill easily but also hit around 30mph on flat roads? Considering I am also 6'3" 250lbs.

[e-beach]

Hi all! Just getting started on planning my first eBike and hope to upgrade later to a full blown electric motorcycle.

Welcome!

I'm designing a chopper-style frame and studying welding to get it done. Considering the hubzilla motor because I like having more power than I need, just in case.

Sounds like you like having fun.

I live on a hill but most of my commute is on a flat road. What size rear wheel and power supply should I have to get up the hill easily but also hit around 30mph on flat roads? Considering I am also 6'3" 250lbs.

Before we can address the hill, we need to know the length and elevation.
In other words, what is the run (how long the hill is.)
And what is the rise how many feet of elevation.
With that information we will be able give more informed advise / opinion on what might suit your needs.

People run all kinds of wheel sizes. 26 inch seems to be popular. But a chopper....that might take a bit more customization...

The Hubzilla is a big motor. Over-kill really. You can do what you want to do on a smaller motor, but if you want over-kill for fun and style go with them. I personally have no experience with one, but what I would do is talk to the manufacture about what you need in a controller and voltage to do the things you want. They should be able to recommend products that fit that motor.

The higher the voltage applied, the more power that motor has, but you will be eating lots of amps from your battery back. So, if your commute is short, then you do not need lots of amps, but if your commute is long, then you will need lots of amp.

How long is the commute?

Be sure to get torque arms in case the motor tries to crack out of your frame. Because, after all, it is a bicycle not a motorcycle or even a scooter. Your frame may not be able to take the ''forces" the your fun requires.

You should spend time looking at the other chopper build threads around here. The "search" at the top of this page will help with that. Just type in chopper or chopper build. If you want, send a Private Message to the chopper builders and see if they have advise. Some of them are really quite good.

Like this one. http://www.endless-sphere.com/forums/vi ... 28&t=39741

Hope this helps with you start.

[Colossus]

Wow! Thank you for the lengthy response!
I will get back ASAP with those specs.

[warrah]

my vote would be on the cromotor. My first ebike used a nine continent motor, my second ebike used a cromotor. I jumped all the way to end. Probably because the vehicle i originally had in my minds eye lent more towards motor, less towards pedal. Do that calculation, 70/30% motor/pedal, 60/40% pedal/motor etc etc. The answer will emerge from that i think.

The nine continent and crystalyte motors have several design limitations that seem to suggest they were never intended for motor centric builds. They can overheat on hills, and the phase wires are tiny (limiting the max current you can use). If you live in a flat part of the world, then its not problem. On my first build, i underestimated just what a bastard hills would be. Where you at, if i may ask?