Crystalyte HS 3540 Rear Wheel Kit:
• HS3540 Rear Disc Hub • 20A Infineon Controller • Throttle • Display: eZee LED (standard) or Cycle Analyst (option)
The standard wheel size is 26". Other wheel sizes are available at an additional cost. The hub only option is also available at a discounted price.
The standard display is eZee Bike LED Display Console with Custom Firmware for Power Limiting:
The display can be upgraded to the Cycle Analyst, V2.4 Direct Plug-in for Controllers with Direct Drive Hub Motors:
The standard kit includes a split grip twist throttle, which works great for most lever shifters. If your bike uses a twist grip shifter, then you would likely want to swap this for a thumb or possibly left side throttle.
We also carry two twist throttle types that have a button built in, which you can press to engage regenerative braking without messing with the existing mechanical brake system. This is a great solution to take advantage of regen if you don't want to replace your existing brake levers.
The stock kits come with a 20A infineon based motor controller C3620-NC. This gives about 550 watts of output power with a 36V battery pack, and 750 watts when used with a 48V battery. You can get more off-the-line torque by using a higher current limit controller, but you have to make sure you have a battery pack that can deliver those currents. Most of the cheaper Chinese batteries cannot. If you plan to run at more than 48V, then it is essential to upgrade to either the 25A or 40A infineon devices, which use 100V IRFB4110 mosfets.
The two Crystalyte Sensorless controllers allow the hub motor to be driven without the hall signals. This can make the system more robust since a frequent source of trouble with brushless hub motors has been related to the hall signals, either from damage inside the hub or connector/wiring issues on the hall sensor leads. However, they can be a little bit rough when starting from a standstill or at very low speeds, and the Crystalyte enclosure boxes aren't nearly as watertight as the Infineon units.
All of the rear motor kits have a 35mm x 24 TPI threaded side cover that accepts standard screw-on freewheels, so you can get this part from a bicycle store. However, most bike shops don't carry freewheels with fewer than 13 or 14 teeth, and usually on an ebike this is not geared enough to keep up with the pedalling. So we offer a selection of 7,8, and 9 speed freewheels with small 11 tooth cogs.
Both the Nine Continent and the Crystalyte motors have a 135mm rear axle and enough clearance on the right side to fit a 7 speed freewheel. The 8 and 9 speed freewheels are wider and protrude just a bit past the axle shoulder. In that case, you also need to get a spacer washer to make the axle stick further out, increasing the dropout spacing to about 138mm.
The rear Crystalyte motors also require a washer underneath the freewheel to prevent the freewheel bottoming out when it is screwed onto the motor. We include this washer as standard with all rear Crystalyte motors.
Torque Arm Option:
A torque arm is recommended for installations above 500W, i.e. any installation using 35 amp and 40 amp controllers.
TorqArm_V4 - Grin Technology Universal Rear Torque Arm, thick 1/4 inch stainless steel. Thick 1/4" Stainless Plate
Specifications are subject to change without notice. We are doing our best to provide accurate and up to date product information and product images on our site but we cannot guarantee their absolute accuracy. Please contact the Store if in doubt.