Too much power through 250w motor?

[Kiblams]

Hi guys,

I'm new to electric bikes and after doing a moderate amount of research (only the tip of the ice berg it seems) I bought myself a Dillenger 250w road legal front wheel kit

To say I am happy with it is an understatement! The kit went on the bike without any issues and I was test riding within 30 minutes (no wire management etc)

I am really surprised at how powerful the motor is and it can drag my 250lbs weight up some pretty harsh hills with minimal input at 10mph and on flats it outpaces my pedalling and levels out at 18mph mid battery level and 22mph at full charge. (It also happens to be unlimited out of the box)

My query is this; because I was so surprised by the performance I did a little research and checked out the stats. As I see it, the battery is putting out 36V and the controller is 15A, so is it actually putting 540w through the motor when set to full assist/full throttle?

I have checked the motor and controller temps after some big hill climbs and everything feels cool to the touch so I'm not massively concerned, but just wondered if I was wildly mistaken.

Cheers!

 

[sparkysx]

Sounds fine to me, glad you are getting a good ride out of it.

 

[Benjahmin]

Yeh, sounds about right. The 250w rating is merely the continuous rating of the motor, that's to say what it will take - all day- without overheating. It's a big chunk of metal and will take a lot of heating up. It will only be actually consuming the 540 (less actually because of inefficiencies) at low speed. At higher speed the back EMF generated by the motor itself will limit the current (and so power) until it is only just above zero at terminal speed.
If you look at power outputs of proffessional cyclists, your motor is a bit like having Sir Bradley as stoker