I agree Chalo, when you consider the benefits you are getting with an ebike, you are still way in front at leisurely speed, as i do.
Dogman said elsewhere, at speed, you are focussed on spotting the next debris or whatever hazard on the road ahead. Take a chill pill and enjoy the surroundings. Similarly, I find weaving a bit to follow the smoothest roadway path helps smoothness a lot.
I feel for outer urban, rural and semi rural folk tho, with their greater distances, not just for work.
I take your point on tyres and wheels, just saying, they are stronger than you think and worked well for me for years humping 100kg.
Racing valves and I never seemed to get on anyway, but they do make sense - the larger valve hole must weaken the rim a lot - i.e. require a much heavier rim for equal strength.
Desireable as options may be, for many, the cash just isnt there for the power needed to effectively commute 20-25 miles using conventional ebike wisdom. As we know, it snowballs. The heavier and more powerful it gets, the heavier and more powerful it needs to be.
Its not just speed per se, its making full use of gravity momentum also. On downhill runs, wind and tyre resistance act as a brake.
I am just saying, its usually constructive to question conventional wisdom, even if you decide to conform in the end.
We agree about moderate speed, but we also know many give it undue priority. Its a legacy we are stuck with from Detroit's marketing, and a congenital primitive instinct to race and have the fastest steed thats imprinted on we mens brains, but petrol is a very different paradigm, so get over it - grow up
If you can effortlessly transport yourself at least 3x faster than you could possibly run for only a few minutes, and do that for over an hour, for ~zero $ per mile, thats pretty good, right? Be happy with that America.
Despite 700w+ being legal, I think it a mistake not to lean more to the euro minimalist model. For me, when a bicycle is un-heftable, its no longer a bicycle. Its a motorbike that has to be wheeled everywhere. 30kg all up would be my max.
If my 12.5kg pedal roadbike is ok for a 100kg gross weight, then why not an 80kg guy with 6kg of battery and motor on the 12kg bike? The max speeds are also the same, whether pedal or powered, given wind is the limiter, and the limit can be reached by either means. Why does the ebike need to be different? I think most could pedal out 250 watts of power, briefly anyway, so no real overtaxing of the intended bike limits need occur to spokes etc.
For example brakes. Most would scoff at calliper brakes on an ebike. Well yes, because ebikes are heavy. But this rig isnt heavy, its within the design max load spec, so well maintained, good calliper brakes should be fine.
I am not at all convinced by shocks and they add over 1kg. Smoothness from steel frame and bigger wheels ~compensate for going without.
I stress, just saying, but it sure seemed a big factor in the effortless rolling of my racing bike was those thin, rock hard, 120 psi tyres. I never had a traction problem in many years of using it as my only transport. If you are sensible, they should be safe on reasonable roads at appropriate speeds.
My only grief was the road morons who placed a drain grill with the slots parallel to traffic flow. My thin front wheel disappeared up to the axle in it. I was ok, but really .... Tax payers must constantly foot the bills for compensation claims for such surreal, negligent stupidity.
My educated guess is the worst of the commute is where you are forced to share with speeding cars. Here, a low power and resistance bike is pretty equal to a big powerful one once up to speed on the level, or decline, since its the wind which creates a practical speed ceiling. It takes a lot of power to compensate for the drop bar bikes wind and tyre advantage.
I am surprised folk dont improvise fairings more. Surely a large plastic salad bowl strapped to our chests would help? Jousting type body armour for limbs, contrived from slippery used pop bottles? A kitchen tidy lid as a bike nose cone?