408 Crystalyte Hub Motor Kit

$500aud and $110aud for freight = $610aud

The motor comes already laced into a 20" or  26" rim. The controller can run on 36volts or 48volts and the controller can draw a maximum of up to 20amps. The controller doesn't need any adjustments to run on either voltage.

The motor is brushless type with a high efficiency of over 80% at certain rpm. The motor is gearless type so it gives good top speeds.

If in a 26" rim running on 36volts the top speed (from my own measurements) is about 30km/hr. If running at 48volts the top speed (from my own measurements) is about 40km/hr. 

If in a 20" rim at 48v it will reach 33km/hr top speed (figure from Gary Pelletier, customer).
(because the motor is gearless its top speed depends on what size rim you put it in, on a 27" rim also called a 700c rim the top speed will be slightly over 40km/hr if running on 48volts). In a 20" rim the top speed is lower but it will have more torque or pulling power up hills.

The motors have no internal gearing so they are very quiet but not really the best motor for steep hills (if using a 26" rim ).

 If your planning on going up steep hills at slow speed the motor will lack power (unless you can get a good run up and keep the speed up). Its very good for long rides on flat or long not too steep hills. The motor is quite ok on medium steepness hills. The motor will kick you along with no pedal assist needed at all on flat roads. In fact its quite alot of fun to be whizzing along at 40km/hr (48v in 26" rim) without pedalling at all.
[postscript: if your using lithium batteries the torque at low speeds up hills improves considerably due to less weight on the bike, in fact with lithium batteries these gearless motors will outperform a geared motor]

The motor weighs about 8kg and is 19cm in diameter. Below is a  picture of the 408 motor. Crystalyte motors come with a 6 speed cluster installed on the motor. Also a high amp keyswitch for on/off and a 20amp fuse with fuse holder are supplied. The motor also comes laced into a wide dual wall aluminium rim with thick spokes (2.6mm diameter) for extra strength.  I only have  motors installed into rim sizes of 20" or 26". Rear wheel motors only are available ( I do have some front motors but they are not spoked into a rim).
The installation process is quite simple for all the crystalyte motors, the hardest part is setting up your batteries and battery charger (s). All the connections are already in place and very simple to join motor/controller/throttle/brake handles, you cant mix up the connections as each part has its own type of connector.

 

The kit includes everything you need excepting the batteries, if its your first ebike I suggest you start with 12ahr size sealed lead acid batteries as found in jump starter battery packs (see this link  ).


Independent Torque Graph (not from crystlyate company) of 408 motor running on 48volts. 



Torque figures above are for an 18" rim, maximum torque when motor stalls will be approx. 45Nm in an 18" rim (from the graph above).

 for a 20" rim max. torque will be 18/20*45= 41Nm
 for a 26" rim max torque will be 18/26*45= 31Nm

  Max. output is approx.  570watts . Maxium efficiency is 83%. 

Note: controller for 408 kit runs on 36v and 48volt.


Above 408 installed in my bike with two lots of 24v 10ahr (4kg) lithium polymer (non-oxide type: iron phosphate) to 
give 48volts 10ahr. Range approx. 30km flat ground no pedal assist, top speed with no pedalling 40km/hr, power consumption approx 10watthrs per km. (in picture above one charger is plugged in just to show where it goes). With pedal assist and being nice to the batteries on flat ground higher distances can be achieved.

INSTALLATION:
Installation is quite straight forward, there are a few things to note:
1. the spokes will be quite loose when you get the kit. Please adjust them to your desired tension before riding. 
2. because the crystalyte kits are designed to use with a large cluster and still fit into a standard bike frame you will find the wheel will be about 1cm or so off the centreline of the bike. You can 'dish' the wheel to get the wheel in the centre of the bike (will put up a section on dishing a rim shortly). Your brake pads will need to be adjusted to suit the rim.
3. ensure that you use the torque arms supplied with the kit, these stop the axle turning in the frame. (see link) 

beware of spray ebike company: more info
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