THIS IS A HIGH TECH COMPUTER CONTROLLED PEDAL ASSIST CONVERSION KIT
BATTERY IS NOT INCLUDED IN THIS LISTING, ORDER SEPARATELY.
BIKE IS NOT INCLUDED!
26in, 27.5in, 28in, 29er, 700C rim sizes are available. Specify in your order the requested wheel size. Other battery case options are available Laced on double walled alloy rim with Installation Manual and Video, ready to Do It Yourself. For other rim sizes or customized order contact us. +1604 4453388 |
Speed limit of 32km/h is by law in
North America. About right motor power and battery read bellow paragraphs.
6 months Warranty as per terms of use and warranty. Warranty extension is available.
DC35 series Common Technical
Specifications:
General Performance
Data:
Right ebike power:
If you are an average cyclist, you ride a
bicycle with aerobic continuous power between 50-100Watts. You may increase
your power in an accelerating condition to as high as 400Watts, but this is
only for some seconds in your body acid lactic mode. The power we introduce for
our ebike motors are the continuous power which the whole system can provide
for the whole range as mechanical output. If you are a cyclist who would
like to make it practical to go to work or school for a higher range and
severer road condition, e.g. long travel distance, slopes on the road, wind
against, heavy baggage, etc. or you want to be faster on your bike, or you have
certain physical considerations in your body and don’t want to put pressure on
your body or feet, our 250W kits are
just the best option.
Comparing to aerobic continuous power around 50-100W, 250W motor
mechanical power is a great power which will be added to your pedaling power.
You see it is like 2.5 to 5 time higher power that drives your bike. 250W is
the nominal max power which you can set through your 5 degree Pedal Assist
System. At any time you can choose to limit the motor power to 20%, 40%, 60%,
80% or 100% of the nominal power via PAS setting keys on your LCD display.
You use your bike to do exercise while commuting, burn fat, keep
in shape healthy body? You can select the lower PAS to use more of your
calories and more pressure on your muscles.
250W is pretty enough, well optimized for ebikes with respect of power, maximum regulated speed of 32km/h, weight, cost and the most important, human powered nature of bicycle.
350W is a more powerful faster ebike motor, let’s say more than enough for a bike, slightly heavier and more costly. It is recommended for heavier cyclists, tougher road conditions and those who need a faster drive but limited to max 32km/h ebike regulations. if your conditions are more like this go for our 350W kits.
We do not suggest and do not provide higher power ebike kits,
although there are a lot in the market. We tried and believe 500W, 1000W or
more powers cannot be considered electric bicycles; because the humane power
easily fades in those high powers and the philosophy of cycling will totally be
affected. Go to higher powers only if you are interested in electric powered
motorcycles…
Why
Front Wheel?
No considerable advantage/disadvantage on traction, balance and
control of ebike will be gained by replacing motor in rear or front. But in
many gearless hub motors, as the moment of inertia of the motor is higher than
geared ones, it may have a slight effect on steering efforts; therefor gearless
motors need to be installed on rear axle. It makes it more flexible and easier
to assemble/disassemble front wheel hub when converting a bike to an ebike and
vice-versa as well as minimizing effects on the original bike powertrain
system. This is the main Idea we follow; so we offer geared front hub motors
for our conversion kits; although we can provide rear hub motors in case.
Why Geared Motors?
Higher electric power can be achieved through
higher RPMs in smaller size and lower weight. An embedded high efficiency,
reliable, maintenance free polyamide sun-planetary reducing gear let us have a
great torque and power in a very small and light hub motor. People rarely
recognize this is a hub motor as it is a little bigger than a conventional
bicycle hub or brake hub. An automatic clutch keeps the wheel released while
freewheeling and engage it only when you need a torque or power from motor; No
noise and no sense of geared motor engaged in whole trip.
Installation simplicity, light and small size, low moment of
inertia, high torque and power is achieved accompanied with maintenance free
reliability in hub geared motor.
Ebike Battery:
You get the auxiliary motor power on your ebike from a battery
source recharged by grid power. Primary ebikes used to use sealed lead acid
batteries for the power source which were so heavy and low range. Some
suppliers still propose using this type of battery on special rack mounted
cases or body embedded cases as a matter of lower price and availability for
the customers. To know more about this type of battery follow the bellow link:
since 2005 Li-Ion cells mass production bring this technology to ebike industry as a matter of affordable price. There are different types of Li-Ion cells now on the market with a huge variety of quality and brands.
In Li-Ion technology batteries is a set of certain number of
cells in a case which are connected paralleled or in series for certain Voltage
and Amperage and are protected with special Battery Management System (BMS) to
prevent cells from unbalance, under voltage, over voltage, over current which
all can be harmful to vulnerable Li-Ion cells.
Li-Ion Battery has bellow advantages than conventional lead acid
batteries for ebikes:
·
Higher energy density up to 7 times
·
Higher power density
·
Constant discharge behavior until full deplete
·
Higher safety due to BMS controls
·
2-3 times higher life cycle
·
High electrical efficiency in charge and discharge
You should know that Capacity measurement methods in sealed lead
acid batteries are different from Li-Ion Batteries; e.g. a 10Ah lead acid battery
is comparable to a 6Ah Li-Ion battery pack with respect of ebike range and
about 6 times heavier. In Lead acid batteries, there is usually a direct
relation between charge state and the output power that makes power drop from
full charge to half charge totally sensible. In contrast, Li-Ion will almost
maintain the same output power till the end of it’s range.
What battery we provide:
Battery usually takes the biggest share on the cost of an ebike
kit. In case of Li-Ion it is almost 60% of the total cost of the kit. It is
also very important to performance, safety, reliability and beauty of the
ebike. The most vulnerable and the most expensive service cost in case of a
defect. That’s why many online ebike dealers do not supply battery on their
kits.
Battery cells of all kinds have an expiry date thus no matter if you use or store the battery the battery is getting aged and miss capacity.This is the same brand, model and quality control which is used in most ‘A’ grade laptops. Pack of 40 or 50 cylindrical 18650 cells has the advantage of maintenance-ability compared to polymer packs.
Each 3.7V cell is continuously monitored and protected from
over-voltage, under-voltage and over-current as well as 10 series cells voltage
balance to guarantee maximum life cycle.
Rainproof:
Our ebike kits are designed and tested for a variety of
climates. When they are introduced to Vancouver it means ebike components installation
is rainproof and no problem for rain and splash of water and dust as defined in
IP54 definition. Battery charger is an indoor use only device.
Dust Protected and water splashing against the enclosures from
any direction have no harmful effect; that does not include a water jet or
immersion in water.
To find out more
about ebikes please lead to the following useful Wikipedia link:
Check if you can Do it yourself