Q. Do I need a license, rego or insurances for my electric bicycle?
A. Not is Australia, New Zealand, North America and most of Europe. best check with you local governments for more details
Q. What sort of life can I expect from the batteries?
A. LiFePO4 super cell 13C Battery systems can give you upto 3000 cycles. where NiMH batteries are around 500 cycles.
Q. Is a brushless motor more efficient than brushed motor and by what %?
A. Yes. Brushless motors (BLDC) are >15% more efficient than the brushed motor, however if they are then used in an inefficient drive system the gain (plus more) is lost. please ask if not sure about what gear system is best for your choice eBike kit
Q. Why are other eBike kits a lot cheaper than your electric bike kits. Why are they being sold so cheaply?
A. Well like all things, "You get what you pay for". The cheaper kits use a front or rear wheel hub motor with heavy lead acid batteries. They weigh around 21kg+, over 3 times the weight of the edealsbargains ebike Kits.
Q. I saw a bike advertised as an ebike with hub motor and 8 gears. Isn’t this the same as the edealsbargains eBike kit?
A. No. A lot of electric bikes are advertised like this. What they forget to state is that the motor does not and cannot use the gears. The gears are there solely for the rider and so the motor does not get the benefit of the gears for improved torque up hills.
Q. Whats the motor size power limits I can use?
A. Australia is 200W, New Zealand is 300W, North America is generally 500-750W and Europe is generally 250W.
Q. Can we use a more powerful motor say a 500w or 1000w on private property or off-roads?
A. Yes, just like off-road motor bikes.
Q. How is edealsbargains ebike kit superior from other electric bike kits and eBikes available?
A. Many reasons why it is better:
Can be fitted to all types of bikes unlike other e-kits out there
All the bikes existing rear gears are adapted to the electric motor for huge torque up hills.
Takes only 60-90 minutes to install.
Q. Can the average person install a kit?
A. Yes. you can call us on 0404-977-013 for help with instructions or view on our website http://www.edealsbargains.com.au/page3.php
Q. How old to I have to be to be able to ride an electric bike?
A. In most states the minimum age is 14 years old.
Q. How heavy is the kit with the LiFePO4 battery systrem?
A. Depending on battery choices the installed kit can be as little as 6.5 kg
Q. When the motor is running do I have to keep pedalling?
A. No. The pedals will freewheel, allowing you to rest your feet on the stationary pedals.
Q. I weigh over 100kgs, will this affect the performance of my electric bike, when I am going up hills even if I am pedalling?
A. At low speeds (eg. 10kph), on a 2 degree hill, a 75kg person would use approx 25W less power than a 100kg person. In general the heavier a person is, the more power required for the same performance.
Q. Can the bicycle be ridden with just pedal power?
A. Yes. The choice is yours - battery power, pedal power or a combination of both.
Q. When should I recharge batteries?
A. The battery can be charged after every ride. We do recommend that every 20th charge that you run the battery flat and give it a full charge.
Q. How far will the bicycle travel between recharges?
A. A large number of factors come in to play here. Weight, speed, hills, tyre profiles, tyre pressures, wind, etc, The 200w system can get up to 50km per charge.
Q. Are spare parts readily available?
A. Yes. A full range of spare parts are available
Q. What maintenance is involved?
A. Beyond standard bike maintenance there is very little extra required. Just ensure moving parts are lubricated and that electrics do not get wet.
What can I expect from my electric assist motor?
When cycling the speed you achieve under any given conditions (flat or hill climbing, with wind behind or coming towards you) will depend on the amount of work (effort) you as a cyclist (together with your motor) apply to your bicycle.
This work is normally measure in watts in a similar way to automotive engines (they use kilowatts). In the past automotive engine were measured in horsepower – one horse power (1HP) equals approximately 750 watts.
A typical individual can exert about 100 watts continuously with burst of up to 400 watt. The sports cyclist can maintain 400 watts for long periods. The use of an electric motor to supplement your cycling on the flat or hills can change you from a sweaty unfit cyclist into a cool dry cyclist at the end of your trip or a cyclist with apparent amazing sporting fitness.
What motor do I need ?
Any of our electric motors will not only increase the fun and pleasure of cycling but improve you performance. You should note the legal requirements for your country for electric bicycles with regards the maximum power rating of the motor for your bicycle. The basis of the limits are confusing as they vary so widely for example Australia 200W, EU 250W, 300W New Zealand, Canada 500W (except Alberta which is 750W), USA varies between 750 & 1000W (there are often additional conditions of maximum speed and or overall weight). This is further confused as the legal limit refers to continuous power output not peak power !
Hopefully one day someone realise that most of us want enough power to comfortably assist us up most hills and provide a comfortable safe speed on the flat and as a result give us reasonable power limits and get more cars off the road. Until then the legal limits apply.
If you are using your bicycle off road you are not bound by the above requirements and the sky is the limit.
The table below helps to visually explain what you might expect from a bicycle with motor assist. The total power is your input – say 100W + the motor e.g. 200 watts, would therefore be 300watts. This would propel you at more than 20 mph (32km/hr) on the flat [you only need 200 watts for this], at 15mph (24km/hr) on a 3% slope, 10mph (16km/hr) on a 6% slope or 7mph (about 12km/hr) on 10% slope.
Why do the “watts” vary so much with speed ?
This is because of the physics involved – you always knew those physics classes at school would be useful one day!
The work that needs to be done to move at any given speed is equal to the total of both :-
· Rolling resistance
“PLUS”
· Work against hills or inclines
To help make it clearer let me explain:-
Rolling resistance comprises of 2 distinct parts:-
1. Friction resistance of both the moving parts of the bicycle and the friction between tyres and the road surface – this is fairly constant and independent of speed.
2. Air resistance – this increases with speed and limits maximum speed (this is why aerodynamics is important to fast vehicles).
By going slower the rolling resistance falls (due to less air resistance) and so more work can be used to go up the hill.
So by going slower I can go up steeper hills whilst using the same work (ie energy or watts).
How do I determine the battery I need for my motor ?
Determining the battery needed for a given motor is not quite as simple as it might first appear .. you cannot simply use the wattage rating of the motor as an estimate of the current that will be drawn from the battery. The amount of current drawn from the battery will be greater than the motor wattage by a percentage dependant on the efficiency with which the electric power is converted into work energy… typically a 500 watt rated motor does NOT consume 500 watts (or approximately 20 amps on a 24volt system) but uses maximum of 900 – 950 watts Peak (or approximately 35 to 40 amps on a 24volt system) of electricity.
This is important in working out the maximum watts that will be drawn from the battery and hence battery. If the current drawn from a battery exceeds the limit of the battery or BMS system the battery will shut down or even worse be damaged. You need to ensure that the current drawn from your battery (Amps) [Amps is equal to Watts / Volts … Ohms Law] is less than the batteries amp hour rating “times” its “C” rating. A 500 watt motor can draw up to 40 amps on a 24 volt system and as cheaper battery systems are often only “2C” rated even a 20Ahr capacity battery may struggle – and a 10Ahr “2C” rated battery will have not hope at all - {This is the reason why the 13C rated batteries are so effective and popular - the 10 AHr batteries can amazingly deliver up to 130 amps or almost 3000 watts without damage – powering all motor capacities without problem.}
Happy power assisted cycling.
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