Monday, March 10, 2014

Electric scooter or electric bike?




David


I would like to have an electric scooter or an electric bike. The scooters I like are the Ezip 500, and the Ezip 750. They both can go about 17mph with my weight. The ezip 500 only has an 8 mile range. The Ezip 750 has a 12 mile range but is more expensive. I am trying to decide if I might like an electric bike better(I'm a guy so i don't know if that might look wierd). It goes the same speed as the scooters and has a 15 mile range. I only will go on short 5 mile rides. I love how the scooters ride but the bike goes farther. Also I havn't ever riden an electric bike. I don't know any1 that has one. Which one would be easier to maintain. Are there any other electric vehicles UNDER 400$. Are there any other brands. What is best for me???


Answer
These guys specialise in electric bikes
http://www.electricvehiclesnw.com/

If you can I would go for one that uses a hub motor they last much longer, currie have a bad reputation as they use a cog system which wears out pretty quickly, currie are the cheapest for a reason.
The cheapest place I have seen hub motor kits is ebay $200-400 a retail one is more like 800-1000.
http://shop.ebay.com/?_from=R40&_trksid=p3907.m570.l1313&_nkw=electric+bicycle+kit&_sacat=See-All-Categories

At the extreme end of the market there is this for $2600
http://www.greenspeed.us/e_%2B_plus_electric_bicycle.htm
For that you get speeds of 30 mph unassisted and a range of about 30miles

Can anybody tell me how is the performance of electric bikes & cars .How much economical differece?




ROCKY


is there as compared to petrol bikes & cars


Answer
"Performance" has several factors. We generally think of this on the basis of an IC engine. As a result we tend to think of acceleration, handling and fuel economy. With battery electric vehicles there is also a reference to the vehicle range on a charge. While "range anxiety" is not usually a consideration in an ICE vehicle I do recall a time in the Australian outback where I would have given almost anything for a petrol station.

Generally it takes longer for electrons to flow into a battery than for gasoline to fill a gas tank. Electrons will flow into an ultracapacitor far more quickly and development of ultracapacitors that can hold sufficient charge will resolve the issue. Alternatively if they can be made cheaply enough they could be included with batteries and will extend the life of batteries and enable the vehicle to be quickly charged with energy (from ultracapacitors at "fueling" stations. Presently the best that an electric vehicle can offer is less concentration on fueling. You fuel at home. It takes seconds to start and stop a charge. The rest of the time you can be doing other things. Alternatively you must make special trips to fueling stations where someone must pay attention to the fueling process.

Batteries in an BEV (battery electric vehicle) are typically low in the vehicle. This improves handling as it lowers the center of gravity. Acceleration in electric vehicles is better than ICE vehicles due to full torque starting from 0 RPM in electric motors.1

Under present economic conditions an electric vehicle can save its owner approximately $1000 to $1400 per year in fueling costs in addition to the increase in performance.2 The vehicle except for batteries has a projected life many times that of ICE vehicles, possibly as much as 80 years as compared to the life expectancy of an ICE vehicle of about 10 years. Present batteries have a life expectancy of between 5 to 10 years and may represent 1/2 the investment in the vehicle. Ultra capacitors would have an expected life that exceeds the rest of the vehicle. There is some question about whether the electric vehicle will depreciate very rapidly with little residual value or if the addition of newer battery packs or even ultracapacitors would be like adding an addition to real estate and possibly restore or even exceed the original value of the vehicle. It may be possible that the vehicles will appreciate rather than depreciate like a very few of the classic ICE vehicles. 3




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