[evolutioneng]

okay im going to make a prototype mini bike elctric.what battery cell(s) does someone recommend. which electric motor does someone recommend. 300 weight person. im going to use a centrifugal clutch for the trans. i have a battery plus store where close by so i believe ill be getting it from their if the price is right .

[Ziggythewiz]

headways are popular for bikes, or just small prismatics. I don't imagine you could get either of those from battery plus.

[frodus]

300lb person? going to need some power to move a bike + rider. No offence.

Use some high discharge cells, don't use lead and don't go to batteries plus, they're a ripoff for traction batteries. Order online.

Why use a clutch? Just go direct drive, there's no reason to use a clutch if you don't have multiple gears.

[Arlo]

RC lipo and a ebike hub motor would get you there. Or a 6.7 inch series motor would get you there faster! Here is what I built and I could re-gear for that speed no problem!

[evolutioneng]

nice wheelie hahaha. can someone send me some link on batteries also what controller if i need one im sure i do.

[Arlo]

Originally Posted by evolutioneng

nice wheelie hahaha. can someone send me some link on batteries also what controller if i need one im sure i do.

These are what I used http://www.hobbyking.com/hobbyking/s...case_pack.html


And the controller is a curtis 1204 50v 225 amp but you can open them up and add mosfets to rase the current in my case I added 11 mosfets rasing the current to 500 amps!

If you want a BLDC motor and controller it will be more expensive and you will want to search around for options. Methods and Zombies on ES are doing a 400 amp 100v 24 mosfet controller build.

[obsecure]

you have required a big and very powterfull battery with strong cell to get enough power to run it

[Arlo]

Originally Posted by obsecure

you have required a big and very powterfull battery with strong cell to get enough power to run it

Hobby lipo is amazing anf getting better. Just one little 1lb pac would do it for a short while ( 30 seconds- a minute or two).
Series them up for the Voltage you need and parallel them up for the range you need, I have 18pacs on my bmx it will go 60km on a charge at 35km/h or 25km at max speed 85km/h!

[rmay635703]

Originally Posted by evolutioneng

okay im going to make a prototype mini bike elctric.what battery cell(s) does someone recommend. which electric motor does someone recommend. 300 weight person. im going to use a centrifugal clutch for the trans. i have a battery plus store where close by so i believe ill be getting it from their if the price is right .

Motorcycles are notoriously NON aerodynamic. Nearly 100% of your energy at 70mph will be to overcome extreme wind drag.

If you want your bike to reach 70mph regardless of your batteries, motor, etc you only need to build up your fiberglass skills and make a fairing.
http://ecomodder.com/blog/diy-aero-f...cycle-214-mpg/

After you make the fairing nearly anything 3hp or better will move you to 70mph.

Cheers
Ryan

[Arlo]

Originally Posted by rmay635703

Motorcycles are notoriously NON aerodynamic. Nearly 100% of your energy at 70mph will be to overcome extreme wind drag.

If you want your bike to reach 70mph regardless of your batteries, motor, etc you only need to build up your fiberglass skills and make a fairing.
http://ecomodder.com/blog/diy-aero-f...cycle-214-mpg/

After you make the fairing nearly anything 3hp or better will move you to 70mph.

Cheers
Ryan

Luke over on es has a bicycle that does over 100mph with no arrow dynamics what so ever that's not a typo!