Good information, thanks, and particularly to the article by Flecc on Bicycle Suspension.
Trouble is, you've now opened the next can of worms: Tyres.
In my naivety, I've been transferring the (little) knowledge I've gained about non-electric bikes across to my spec. for my first electric bike. Thus, on my non-electric, I found that ditching big chunky 'knobbly' tyres for decent slim road-tyres gave me an approximate 20% saving in energy. Hills that were very hard became not so bad; long runs seemed shorter.
So in spec.ing my Wisper City, I've been assuming Marathon Plus tyres would do a better job than the (unspecified) puncture resistant knobblies which come as standard.
But from the comments to Flecc's 'Suspension' article, it seems I might be making too big a leap. Now, I DO intend to pedal as much as I can, but given my physical circumstances that is not going to be a huge input, so what I'm wondering is whether I shouldn't just settle for the knobblies and stop fussing about tyres.
The last decisions I'm making are:
Front suspension, yes or no.
and
Road tyres or knobblies.
(I shan't be doing any off-road cycling, just average London roads and some park paths. I'm a slow cyclist, and definitely not a fit one).
I'm not trying to get you to make my decisions for me, just tapping into the wealth of experience that you (collectively) have, and I haven't!
Thanks for your time and patience.
Allen.