The way it works is controller has a unique sensorless module to convert pulses to voltage and feed the appropriate emulated signal to the MCU (Motor Control Unit).
There are other reasons for utilize the controller below:
1. You want to make more space in the motor axle for for thicker phase wires
2. You hate hall wires
3. You have a RC motor (Turnigy & Astro in this case)
4. You want to try something different
5. You think sensorless is cool
6. You are unable to figure out how to wire the sensor wires to the controller with the correct sequence
7. You want to have a backup controller just in case
8. You think sensorless is more reliable since no hall sensors and/or wires can get damaged easily by heat & water
The controller is hacker ready. It was originally a special request item from a member. But word of mouths are making it becomes more popular so I had to make a few extra to meet the demand.
There are lots of potential and features you can unveil and twist as you go. You can program functions such as enable power regeneration, regenerate braking, pulse width modulation, low voltage cut-off, interface with a Cycle Analyst, and others. You may also add an USB to TTL programming adapter and connect to the computer for tuning. (Electronics knowledge is required to unleash the potential however)
One unique feature on this controller is that it has an additional speed sensor circuitry built-in with an extra wire embedded for output. It is to be used with the scooter style electric bike and electric scooters that have a speedometer in the dashboard.
If you look carefully in the photos, you will notice this version also uses lock washers to secure the MOSFETs internally and the heat transfer bar outside to place tension against a nut after tightening. It is also to help prevent the nut from loosening. The MOSFETs will get overheated and damaged when detached from the heat-sink which used to be the case from the previous designs.
* For hackers, you may double and possibly triple the current output to make it a mighty wonder by adding braids wires (http://www.radioshack.com/product/index ... Id=2062744),add solders to beef up the circuit board traces and shunt. It may also be needed to upgrade to larger capacitors, gauge wires for both the battery and the phase wires to the motor.
Best motors to use:
200-500w geared motors
E-BikeKit 6x10 motor due to high torque & low current
Features:
Programmable
Small size
Lightweight
Long range
Good for low discharge rated batteries
Hackable features:
Higher power output
Cruise control with throttle only
Reverse
Security lock
Turbo mode
Status Indicator
Speed Limit
etc.
For hacking information, please see the links below:
https://endless-sphere.com/forums/viewto ... hilit=6fet
https://endless-sphere.com/forums/viewto ... =2&t=18641
Below is the specification:
Model: EC-064110SL-LYEN EDITION
Start immediate controller
Chipset: XCKJ8B116A (same chipset being used as in the 18 FET controller)
Circuit board version: EB206-C-3
6 x genuine IRFB 4110 MOSFET N-CH 100V (tested up to 110V before damage) for more information about the FET, click the link below:
http://search.digikey.com/scripts/DkSea ... 4110PBF-ND
36-60V battery optimized (for higher or lower voltage & current such as 24V, 60-100V, you may need to change the resistor network to avoid damage to the LM317 linear voltage regulator)
20A is the current rate at 72v or 25A at 48v (for higher current, you may need to beef up/reinforce the trace, shunt, and reprogram it via the software)
Low voltage cut-off: 29V
Battery and motor phase wires gauge size: 12AWG (High voltage capable wires equipped)
Dimension: 115mm x 67mm x 35mm plus mount extensions
I have only 50 made since I am busy working on my other ebike projects. My intention for selling at such low price is to share the fun with other ES forum members instead of making them jealous.
I finally understand why Methods mentioned the cost of labor is steep after all this and I have to agree with him from now on. These controllers are not generic controllers. I have every single one serialized. Quantity is limited, buy it now and upgrade later once your piggy bank is filled up if needed. 
$89 USD free ground shipping in the United States & Canada. For other locations, please PM or email me at LYEN@HOTMAIL.COM. I accept PayPal, cash or money order. The controllers will be shipped out from me in San Francisco, California, USA. I will provide a tracking number and ship it out as soon as I have received the fund.
For only $10 more, I can include the the following:
1. CA connector
2. Regenerative enable/disable (Enabled simply by connect the wires together without the need to open the case)
3. USB-TTL 5 pin connector (for use with the USB-TTL adapter that is sold separate)
I also have the USB-TTL adapter for adjust and alter the controller settings on your computer. It has the extra 5 pin plug and a "SEND" button. It is also compatible with Windows XP/Vista/7 32/64 bit operating system (real 32/64bit drivers). $15 with purchase, $20 if purchase separately.
You may click on the PayPal Buy It Now link below. For accessories, please send money via PayPal or send me a private message for the total price. Thanks!
https://www.paypal.com/cgi-bin/webscr?c ... 5EFHECUMSW
If you are not satisfy with the results or if it is too fast for you, you may send it back to me within 30 days in an unmodified condition.
Update: March 21st, 2015 > I can adjust the controller for 24V, 33V, 36V, 48V, 60V, 66V, 72V, 84V, and other battery settings upon request.
Quantity updated as of 3/25/2013: 49 left (buyer bought 1 from Upplands Väsby, Sweden )
Quantity updated as of 3/25/2013: 48 left (buyer bought 1 from San Diego , CA )
Quantity updated as of 3/28/2013: 47 left (buyer bought 1 from Tyngsboro, MA )
Quantity updated as of 4/4/2013: 46 left (buyer bought 1 from Lihue, HI)
Quantity updated as of 4/4/2013: 45 left (buyer bought 1 from Zwingenberg, Baden-Württemberg, Germany )
Quantity updated as of 4/13/2013: 44 left (buyer bought 1 from san diego, CA)
Quantity updated as of 4/14/2013: 43 left (buyer bought 1 from Los Angeles, CA)
Quantity updated as of 4/30/2013: 41 left (buyer bought 2 from Grosseto, Italy)
Quantity updated as of 5/9/2013: 38 left (buyer bought 3 from Zwingenberg, Germany )
Quantity updated as of 5/15/2013: 37 left (buyer bought 1 from Grenoble, France )
Quantity updated as of 5/16/2013: 36 left (buyer bought 1 from Bend, OR )
Quantity updated as of 6/11/2013: 35 left (buyer bought 1 from London, United Kingdom )
Quantity updated as of 6/12/2013: 34 left (buyer bought 1 from Lemignano di collecchio, PR, Italy )
Quantity updated as of 7/19/2013: 32 left (buyer bought 2 from Cucciago, Como, Italy )
Quantity updated as of 8/6/2013: 31 left (buyer bought 1 from Riviera Beach, FL )
Quantity updated as of 8/12/2013: 30 left (buyer bought 1 from Ashfield, NSW, AUSTRALIA )
Quantity updated as of 8/18/2013: 29 left (buyer bought 1 from SANTA FE, NM )
Quantity updated as of 8/26/2013: 24 left (buyer bought 5 from Westerngrund, Germany )
Quantity updated as of 10/5/2013: 23 left (buyer bought 1 from Corona, CA, United States )
Quantity updated as of 10/17/2013: 22 left (buyer bought 1 from Oxford, MS, United States )
Quantity updated as of 10/19/2013: 21 left (buyer bought 1 from Capalle Di, Campi Bisenzio, Italy )
Quantity updated as of 10/30/2013: 20 left (buyer bought 1 from Brie, France )
Quantity updated as of 1/14/2014: 19 left (buyer bought 1 from Morgan Hill, CA, United States )
Quantity updated as of 2/9/2014: 18 left (buyer bought 1 from Ivanhoe, Victoria, Australia )
Quantity updated as of 4/5/2014: 17 left (buyer bought 1 from San Clemente, CA, United Sates )
Quantity updated as of 4/23/2014: 15 left (buyer bought 2 from Palm City, FL, United States )
Quantity updated as of 5/8/2014: 13 left (buyer bought 2 from Heddesheim, Germany )
Quantity updated as of 5/27/2014: 12 left (buyer bought 1 from Ocoee, FL, United States )
Quantity updated as of 5/30/2014: 11 left (buyer bought 1 from Silkeborg, Denmark )
Quantity updated as of 7/3/2014: 10 left (buyer bought 1 from Salt Lake City, UT, United States )
Quantity updated as of 9/21/2014: 9 left (buyer bought 1 from Milton, QLD, Australia)
Quantity updated as of 2/4/2014: 7 left (buyer bought 2 from Zola Predosa, BO, Italy )
Quantity updated as of 2/10/2015: 6 left (buyer bought 1 from Silkeborg, Denmark )
Quantity updated as of 2/22/2015: 5 left (buyer bought 1 from Lowell, MA, United States )
Quantity updated as of 2/26/2015: 3 left (buyer bought 2 from Slovenska Bistrica, SLOVENIA, Slovenia)
It works on both 60 and 120 degree angle hall sensors motors such as the 9C, Crystalyte 40x series, 5 series, Turnigy (at up to 2200rpm only), Astro (at up to 2200rpm only).
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