Recent content by Dopplercana

It is sure that only time will tell. But apart bearings, brushless motors are indestructible if they are working in the right temperature range. 50,000 miles for a Pitbike is a little utopian, no? Anyway for all-terrain vehicles we use hours!!! The shaft design/sizing is not done with the power...

Some specifications that I had not communicated : Weight : approx. 70 kg Power peak : 15 kW (20 ch) Couple motor : approx. 20 N.m / couple max (1th gear) : 320 N.m V max : 75 km/h Battery : 55.5 V / 16 A.h Gearbox : 5 gears Autonomy : 45 - 60 minutes Charging time : 3 hours

The motor works well, I use a ventilator to cooling, the temperature remains acceptable into the gearbox approx. 60 - 80 °C (it depends on the outside temperature). I made twenty loads and for the moment no problem (no wear, no play). hoping to have answered the questions...

Exactly it's like a Pit bike. Below the site where I bought a few items: http://www.newmotorz.com/dirt-bike-pit-bike.html

The gearbox comes from a Honda 450 crf. The rest is an assembly of dirt bike parts.

Hi, Yes I need all the gears, I hold the engine speed to have the nominal power. It's hard to say without additional elements. What is the size of the engine? I use a gearbox from a Honda 450 CRF.

Thanks, I'll try to make a new video this summer. I saw that you live in France. Where exactly ? I come from the 68 .

My Dirtbike in action : -8ARri2wBjY

I had not thought of this. But how to do the difference between normal heat of the electric motor (about 10% ) and heat due from eddy current? What I see: When I ride a long time, the engine mount (part milled) is about 50 to 60 °C but the gear box is not hot. This is an interesting observation.

The base engine is from a 450 CRF 2003. The left housing was milled in order to integrate the electric motor. Below the housing concerned:

The sound of the motor in neutral position: https://www.youtube.com/watch?v=DpgnZjqIbz0&feature=youtu.be

I would you to introduce my project : Integrate an electric motor into a gear box. Specifications : The motor is an Alien Power System 12090 Outrunner brushless motor 130KV 15 000 W The EV : Alien 7Kw 48-60V EV controller-CA direct plug The motor come into the gear box. The motor drives the...