knoxie wrote:eh? hub motor unsuitable for climbing hills??? TH sell the Puma motor??? hills?? the beauty of electric motors is their wide torque band? you cant equate it to a car engine? its an electric motor? the lotus tesla is a car and has no gears??? the performance of which is pretty interesting
n00bz wrote:My Electric Bike goes 60 miles on a charge and is much lighter?
There are electric bicycles with advertised ranges of 60 miles and extremely lightweight. If you have one, and you find it actually goes 60 miles as advertised- congratulations, you have violated the laws of physics.
n00bz wrote:My Bike has a 1000 watts, how can the OptiBike be as fast?
The Optibike is the most efficient electric bike produced - over 75% of the battery power is transferred to the wheel. Many other electric bikes are around 30% efficient. So while the Optibike has 850 watts of power, the other bikes actually have far less.
knoxie wrote:Since when was 36V high voltage? and when did 48V become a lethal voltage? uk telephones operate on 50V dc? arrghh this is such a load of BS!
Almost. The US copy also claims it has survived live sniper-fire in Bosnia.knoxie wrote: I am pretty sure that they just copied the American site and pasted it in?
Says who, besides you?safe wrote: As a rule:
If a hub motor and a multispeed motored ebike are compared head to head with the same power you get:
25% more power overall with the geared bike.
25% better efficiency overall with the geared bike.
33% less heat overall with the geared bike.
TylerDurden wrote:Says who, besides you?
safe wrote:TylerDurden wrote:Says who, besides you?
[color=#0040FF]If you owned a geared electric motor bike you would know.
safe wrote:...over 30 mph average for a range of over 10 miles. (streets too, not some oval)
There's just no way to do that without gears... I'm sure of it...
TylerDurden wrote:If Bill's 406 can do 30mph for 20mi, I'm pretty sure it can manage >10mi on streets.
safe wrote: Trust me... if you saw the turns and the speed I'm carrying through those turns in a lean there's no way MOST bikes would be able to keep up just based on geometry and handling of the bike.
dogman wrote:Indeed it can, but how steep was the hill? To emf, i think safe is referring to the motor driving the chain, which can change gears. That way you can run the motor at it's most efficient rpm, and do the same trip on less watt hours. But now that I own a ping, who cares? My bike is as fast as I want, and goes as far as I want, and I like the electric motor simple and gearless. I still want the gears on the bike though, so I can peadle along with it at speed and my butt doesn't go to sleep. i think a lot more bikes will be built in the future that take advantage of gearing and chain drive so they can go farther and climb hills without blowing all the watts. But for kits and do it yourself, i think the hub motor is here to stay.
TylerDurden wrote:30mph? Ask Lowell.
dogman wrote:Gears obviously help all engines, human, elcectric, ice, but again, it is sure easy to do without with electric motors. Just get out the wallet, and pour on the wattage.
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