Batribike Quartz

[flecc]

They might well be decent bikes but the title doesn`t begin with a W so they have no chance

Now then, naughty! I've never owned a Wisper, never even ridden one. I just know that 260 Wh of electrical energy doesn't usefully help anyone with a double weight bike for the duration of 100 miles of cycling.
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[Old Timer]

Now then, naughty! I've never owned a Wisper, never even ridden one. I just know that 260 Wh of electrical energy doesn't usefully help anyone with a double weight bike for the duration of 100 miles of cycling.
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Yeh! that was a bit naughty

Dave

 

[Tex]

re range- for my bionx's a rough but accurate range rule of thumb is to HALVE the claimed published range for each motor/battery combo for rides over mixed terrain with meduim pedal input (120-170 watts from rider).

 

[Wisper Bikes]

100 miles range providing you put 90% of your peddaling force into it.

260Wh/100miles = 2.6Wh per mile. YEAH RIGHT. Personally I think the data is misleading and unachievable in normal conditions

Here we go again!

It brings us neatly back to ranges. As you say Alex, a bike with a big battery would go for 100's of miles if only offering 5% assistance. Range means nothing without details of the amount of power being drawn from the battery to assist the rider.

The shame is the bike could actually be quite good. If only the marketeers were sensible about their claims they may be receiving good publicity rather than what has happened here.

All the best

David