mr.electric
10 kW
I went the Highpoweredcycles route. It is a very similar hub motor to your Izip zuma. I think you got a great value and I enjoyed reading the review. I would guess your motor is putting out more than 500 watts from what you describe. It is 36v at 20 amps right? that would be 720 watts. You may consider going to 48v as it will make the bike 30% faster which is what it takes to ride with traffic not on the edge. Also a bigger front sprocket can help you add more top end speed to keep your lane. I run at 48v limited to 21 amps so about 1000 watts - I believe 750 is the legal limit.
I don't think too many cops will be hitting you with the speed gun and anyways it is hard to know it is an electric anyways.
Of course your bike is completely within the letter of the law and reliable. It may be more of a project than you want to undertake to upgrade.
I also have an ebikekit direct drive ebike that I enjoy too also running about 1000 watts. It accelerates more slowly and has less torque but it is very smooth and enjoyable to ride.
I am building a 3rd bike now a bmc geared motor on a rusty old 20" folding bike. My beater bike.
good 48 volt lithium packs and controllers are sold here:
http://www.ebikessf.com/
I don't think too many cops will be hitting you with the speed gun and anyways it is hard to know it is an electric anyways.
Of course your bike is completely within the letter of the law and reliable. It may be more of a project than you want to undertake to upgrade.
I also have an ebikekit direct drive ebike that I enjoy too also running about 1000 watts. It accelerates more slowly and has less torque but it is very smooth and enjoyable to ride.
I am building a 3rd bike now a bmc geared motor on a rusty old 20" folding bike. My beater bike.
good 48 volt lithium packs and controllers are sold here:
http://www.ebikessf.com/