Why does Liv/Intro specs not mention peak rating?

[prState]

Only when I read the a to b review did I see the motor has a peak of 600 watts. I'm also a bit confused as why northwest has the Intro at 250 watts continuous and NYCE lists theirs as 200. I think they're all the same bikes.

The biggest omission is peak power though, as all seem to mention it on other models. Certainly, until I read people's comments of how well the bike performs, the lack of mentioning peak power was putting me off a bit.

eZee LiV electric bike, top quality electric bike for a great price

EbikesNW: eZee Intro Specs

50cycles Electric Bikes - eZee Liv electric bike info and reviews

 

[Ian]

I think much of the confusion stems from the fact that the Intro/liv has a specification designed for Europe which limits nominal motor power to 250W, this is further complicated by UK law which can be interpreted as limiting nominal power to 200W. In both cases this is a notional average power which bears no resemblance to the power the motor is capable of producing. Most bike motors will deliver their peak power for long periods if required. In Europe there would be a suggestion of illegal power outputs if manufacturers were to quote peak power outputs so they tend to be conservative with their quoted specifications, its a case of making statistics say what you want them to say.

I think the difference between the two suppliers 200/250W is simply a case of quoting the differing UK/EU requirements but as you suspect the bikes have the same power output which can be much higher than either figure.

The Intro/Liv is probably quite low powered compared to some of the very high powered machines available in the US but is rather more powerful than your present bike.

 

[flecc]

Also, even the true peak powers are not always entirely useful. The Liv has a brush motor and this type has a power curve with a rather sharp peak characteristic.

Hall effect motors have a flatter topped power curve spreading over a wider range of speeds, and that is more useful.

That's why the eZee Sprint with it's Hall effect 500 watt peak motor is a somewhat better performer than the Liv, essentially a very similar bike, with it's 600 watts peak brush motor.

Likewise the 576 watt peak Quando/Torq Hall effect motor easily outperforms the 600 watt peak Heinzmann brush motor.

Your Twist has a Hall effect motor which some US dealers have shown as 250/390 watts, a sensible idea. The 250 watts is the nominal average power used, a figure required in Europe as Ian has said, and the 390 watts it's peak power.

In case it seems that the Twist power is ridiculously low, I should add that most hub motors over here are around 400/450 watts peak, the other bikes mentioned above being very much a minority and on the high side by UK/European standards.
.