Bike-2WD mountain bike
Application-rear motor, Q100 CST fast wind(328) in 24" wheel.
First application was about 6 months ago, the little 6-FET SO6S @ 12S. Made it about a block when I heard it pop. It was documented here that the 36V SO6S couldn't take 48V and I should have known better. My bad.
Second try, another SO6S @ 11S(44V). Made it about 12 blocks this time
Third try, the huge 12-FET S12S @ 11S. All was well for about a week when I managed to freeze the display in the "source" mode while trying to program the quirky SLCD-3 display. After a week trying to get out of "source" mode, I by-passed the display by jumping the pins. Toward the end of a long ride it when dead.
Now I understand that a "fast" wind motor in a larger wheel can be a little hard on the controller, but this ride was completely flat.
What I liked about the BMS Battery sine-wave controller\SLCD-3 combo;
Mated with the Q100, this system was dead silent and very smooth(S12S).
The display is attractive and supplies lot's of info.
What I didn't like;
SO6S;
Will not live with any over-Volting, it's low-power only.
S12S;
Larger than it needs to be.
When used without display, mine defaulted in a lower power assist level. Guessing here, but I think it was level 2.
SLCD-3 Display;
The mounting brackets are VERY fragile. Both loops that secure the "button" module to the handlebar broke off.
With the 5-level assist mode, the "Torque Imitation Mode"(current limiting) only works W\ PAS. For throttle only applications, it's speed limiting only.
Programming or changing parameters requires much scrolling, some of it with rather awkward finger manipulation.
Never could read Voltage correctly for 11S or 12S. The "battery gauge" was all over the place, reguardless of the "damping" setting. Although the one time I hit LVC, it was right on. 40V with 11S.
Bottom line-Unless you are planning to use PAS, I think these fragile controllers are more trouble than they are worth.
Just my observations, your results may vary.
My solution- I took one on my controllers off my trail bike. This one from Elifebike;
http://elifebike.com/peng/iview.asp?KeyID=dtpic-2014-3K-SAUG.5TSEX
For a 17A, 9-FET controller, it's a little large as well. But at least it's short, the most important diamension for my application.
Not dead silent, it is quieter than my Infinern\Grin 20A, I guess about 3 Amps quieter :lol:
Smooth, but it should be @ 17 Amps @ 11S.
Although I have not hit it, it has a very useful LVC of 41V(the site description states it's 42V, but the sticker on the controller says 41V).
I am using it with the simple 3-speed assist LED810 display and although I am giving up some features. the 3-speed is enough. On 11S, the second "gear" tops out around 18 mph. perfect for me.
The cruise works well, but engages a little fast(after about 5 seconds).
This controller and it's 500 Watt brother are often available on Ebay for $40 shipped, saving on shipping if it's all that is to be ordered.
Overall, this controller matches the Q100 better than the S12S. I think the 19A version would be fun to try with the Q100H.
Recommended.
