Accelerating from 0-30 mph in 4 seconds, reaching a top speed of 45mph, all with a simple twist of the wrist – no clutch, no gears and NO-NOISE ! . . . . the XT range of bikes (XT3 & XT4)have a runtime of up to 3 hours . . . that’s similar to the runtime you’d get from a tank full of petrol on a conventional MX bike. Re-charging the XT will take approx 60 minutes from a domestic power supply . . .at a cost of around 50 pence !
E-style is the freedom to ride when and where you want. The ‘range issue’ is countered by the access benefits. You get to ride electrics just about wherever you please. Campgrounds, backyards, parking lots, horse trails, bike paths, woods trails, parks, BMX tracks; the list goes on. E-style provides more access than gas-engined moto-ing, so you get to ride a lot more. Lunch breaks, after work, whatever. No more waiting for the weekend and driving off to the desert or recreational riding area.

ELECTRICMOTO XT3 BATTERY ELECTRIC MOTORCYCLE
The media has written off battery electric vehicles as an experiment that failed so all the attention is being given to fuel cell vehicles. For true long range electric vehicles the future can only be Lithium ion batteries since these combine the high power density of Lead Acid batteries with the highest energy density of any battery type. Lithium has particular appeal for use in batteries for two reasons; first, it is the most electro-positive metal, which means it can be used to make batteries with higher terminal voltages (typically, four volts rather than 1.5 volts) than other designs. And, second, it is the lightest metal, having the capacity to store 3,860 amp-hours of charge per kilogram of weight compared with 260 amp-hours per kilogram for lead. Electricmoto introduced the XT3 (extended time) model in April 2006 at a price of £3400 plus VAT. You can see a picture and specifications of the XT3 here:
The Lithium ion battery has not been specified except to say that it has a total capacity of 1200Wh which is 50% greater than the capacity of the Lead Acid battery of the Blade yet doubles the run time. Typical heavy-duty vehicle lithium ion batteries for vehicles have an energy density of 125 Wh/kg compared to the energy density of 35 Wh/kg for Lead Acid batteries. This allows 4 wheeled vehicles to have a range of 120 miles. Vehicle Li-ion batteries are designed to have a service life of 8 years but if you are prepared to sacrifice some of the battery’s service life then range of up to 280 miles is possible in electric cars. You will get the most bang for your buck with the cylindrical 18650 camcorder battery, but it has to be the 2200 mA hr version. As these super high energy density Li-ion batteries can be unstable they have developed flat ones with a solid polymer electrolyte. Here is a range of 3M Li-poly cells for RC cars. Their main disadvantage is that their higher internal resistanc means that they cannot supply the high currents required by vehicles during acceleration.
www.maxamps.com/index.html?lmd=38722.504028
There have been experimental vehicles built using thousands of such cells wired together but this is very expensive as you can imagine.
The XT3 also uses a Lynch ‘pancake’ motor but it is the more powerful LM200 model. Read the specifications here:
www.lemcoltd.com/performance.htm
The 21.2 kW specified as the power output of the XT3 cold only be maintained for a short time without burning out the motor. The maximum steady state power is actually 8.5 kW which is consistent with it’s top speed of 40 mph. Another more advanced option would be the brushless synchronous motor with neodymium permanent magnets for the rotor and electronic commutation using a transistor inverter. This would have the advantage of low noise, no maintenance, programmable torque/speed curve and regenerative braking. When power is cut off the motor acts as a generator and the inverter becomes a converter to recharge the battery. This form of braking can be so efficient that you may never have to replace your brake discs. The disadvantage of AC synchronous motors is that they require a bigger and more expensive controller, which makes more noise than the simpler type used in the XT3. The Blade has a noise level of 60 dB incidentally.
If the XT3 has a three-hour running time for ordinary trail riding then it should have a range of at least 60 miles. This would make it suitable as an urban runabout and casual off-roading at a special site having been taken there on a trailer. Combined with it’s cool styling this makes it a desirable acquisition for someone with £3995 to spend. The dilemma for me would be should I buy one now or wait another year for the next model with a greater range. As this model only weighs 83 kg there is the potential for beefing up the frame, wheels and forks to carry the weight of a bigger motor and battery pack. This would make a bike that would be comparable in performance and range to typical 200cc trail bikes, although a 15-minute boost charge may be necessary for a days riding. As it is the XT3’s light weight, mountain bike tyres, and low noise output would be ideal where a machine of low impact is required such as mountain bike trails. With such a machine you could say ‘up yours’ to GLEAM, the Ramblers and the government.






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