axca
1 mW
Greetings and new user here.
I did a quick search of the forum regarding the general take on this subject. I could see a limited discussion pertaining to this from 2014.
As per the so-called federal definition of "power-assisted bicycle", it has been stipulated, among other things, that an ebike motor needs to have "a total continuous power output rating, measured at the shaft of each motor, of 500 W or less".
Obviously there are practical difficulties for an average DIYer to ascertain this since not many have the means to spin a motor on a dynamometer at a given voltage to so as to titrate the current to satisfy this power requirement, and then program the controller to limit current draw to that amperage ...
But on practical terms, it does mean that one could rely on motor producer's recommendations to make a reasonable effort to ensure that the power output stays within legal envelope. For example, an average BBSXX mid-drive motor can be rated for a 500W power output with either 48V/18A and 36V/25A setups.
For those who use 600W - 1200W "nominal-rated" DD motors, which is practically everything apart from Bionx, do you affix a DIY "manufacturer's label" on the motor to at least show that you have adjusted the controller to make it "street-legal" or most just couldn't be "bothered"?
Thanks in advance,
I did a quick search of the forum regarding the general take on this subject. I could see a limited discussion pertaining to this from 2014.
As per the so-called federal definition of "power-assisted bicycle", it has been stipulated, among other things, that an ebike motor needs to have "a total continuous power output rating, measured at the shaft of each motor, of 500 W or less".
Obviously there are practical difficulties for an average DIYer to ascertain this since not many have the means to spin a motor on a dynamometer at a given voltage to so as to titrate the current to satisfy this power requirement, and then program the controller to limit current draw to that amperage ...
But on practical terms, it does mean that one could rely on motor producer's recommendations to make a reasonable effort to ensure that the power output stays within legal envelope. For example, an average BBSXX mid-drive motor can be rated for a 500W power output with either 48V/18A and 36V/25A setups.
For those who use 600W - 1200W "nominal-rated" DD motors, which is practically everything apart from Bionx, do you affix a DIY "manufacturer's label" on the motor to at least show that you have adjusted the controller to make it "street-legal" or most just couldn't be "bothered"?
Thanks in advance,