Should bikes with the Bosch 500wh battery and motor have the same approximate range?

Discussion in 'High Speed' started by ZachO, Aug 9, 2017.

  1. ZachO

    ZachO New Member

    Hi All, from reading Court's reviews, there are many factors that impact a bikes's range. But if conditions and other factors were the same (wind, terrain, pedal assist mode, rider and bike weight, etc.) should two bikes with the same Bosch 500Wh battery and motor have approximately the same range? I would think so but I see that different manufacturers who have essentially the same drive train (motor and battery) advertise very different ranges even though the bikes all hover around 50lbs. Anyone have any inputs?
     


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  3. Sonoboy

    Sonoboy Active Member

    IMG_9591.JPG
    Rolling resistance. That's probably going to be the largest factor, considering your list of "equals" between two bikes. A fat bike with knobby tires running 15 psi would have a greater draw of battery usage than would a skinny, high psi pressured tire on the same bike. The extreme is illustrated above.
     
    Last edited: Aug 9, 2017
  4. Sonoboy

    Sonoboy Active Member

    Oops, spotted another one. Drive train downstream from the Bosch drive. A derailleur system will be the most efficient, and something like a Nuvinci with have a greater power loss due to its design. A Rohloff falls close to the derailleur, I'm told.
     
  5. rich c

    rich c Active Member

    The manufacturers can advertise any number they want. If you question their numbers, they just tell you their are variables. Hell, Sondors started out saying 50 mile range on a fixie fat bike.
     
  6. opimax

    opimax Well-Known Member

    Rich C, I came across a guy checking his range on a Sondors, got 50 miles @ 10mph , flat part of trail going back and forth, avoid stop starts people etc., IE hyper-miling. I can imagine how my Stromer would do if i could do the same... I usually get he bottom end of specs if that. buy extra batteries and carry them is my method.
     
  7. Mark Peralta

    Mark Peralta Active Member

    10 mph is easy speed to achieve and maintain even with non electric bike. I would be more interested on the range at a realistic 15-18 mph.
     
  8. Roxlimn

    Roxlimn New Member

    I've put 3000 miles on a Dirt-E with a Yamaha motor. On largely flat-ish terrain, it does 50 miles in normal traffic. Have about 3 significant bridges with climbs to cross, and the terrain rolls mildly rather than being absolutely flat. Feels flat on a car and on the ebike, but you definitely feel the slight gradients on a push-bike. Maybe 2%? Same terrain, 30 miles on flat-out full-abuse Sport mode. On Eco Mode, it'd probably do 70. Aside from your weight, it really depends on how long you're pedaling without any assist from the motor at all, which is likely enough for me since the terrain is forgiving and I am strong enough to pedal the bike past the electric assist while still being comfortable.
     
  9. opimax

    opimax Well-Known Member

    Riding at 10mph is almost torture! This was an old nerd (and I am 61 calling him old)just proving his battery could make it to 50 or whatever they advertised...
     
  10. tallpaul

    tallpaul New Member

    On my FullSeven with 400watt battery, my weight at 185lbs, 30lbs tire pressures, and just a few hills, but usually some 10mph headwinds, I usually get around 35 miles, averaging 15-18mph, using mostly tour, some eco, some sport and occasionally turbo. I don't ever drain the battery either, but go down to 2 bars verging on one bar. Want a second battery to take along, but cost is so high so will wait and see if I really need it. An alternative is that a local eBike dealer will rent me a battery for $35 a day for a 500 watt Bosch. Worth considering.
     
  11. elyhim

    elyhim Member

    Depends on weight, speed, elevation. I get about 25 miles on Turbo and 60 miles on economy (bosch CX Trek Powerfly 8). There is a new backpack that is built to hold a battery, I forget the name it was in the recent Europe mountain bike show.
     

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