For the Honda Elite project I had a brilliant idea (or brain fart) to try out the Kelly Controls controller. This is the same Honda Elite project which Alias mentioned.. as she is participating. The bike has a 48v "4000 watt" motor I bought from Craig (deafscooter) a year ago and the low end Kelly controller is 200 amp. So, ah, this controller will do double what Craig claimed is the capacity of the motor. Ought to make for a good test.
The controller just arrived and I thought to write up initial impressions - it hasn't been installed, just looking over the manual etc. I think someone else bought one of these controllers, right?
The box is in the same style as the curtis controllers, but a silvery color (aluminum) rather than their preferred basic black. The box is very sturdy and appears to be watertight. A welcome departure from the Curtis style is the large number of connectors. The other controller makers, Curtis, Alltrax and Logisystems, 4QD, all use a minimalized number of connectors.
Kelly has separate connections for power, reverse, throttle, ground, three different switch inputs, a horn, both resistive and hall effect throttle, serial port, etc.
The M-/B+/B- connectors are large spade posts to which you screw cables, as is typical. But the hole for inserting the screw is pretty narrow.
They include in the box high value resistors and diodes as per the wiring diagram AND they include a serial port cable and gender changer. Very complete on this end. The wiring diagram is very detailed and thorough unlike the sketchy (and incorrect) diagram which shipped with the last alltrax controller I bought.
An interesting detail -- the unit I bought is rated for 200A. Turns out that's the "3 minute" limit. Their "continuous" rating is 120A.
It supports running in reverse. Simply connect the 'reverse' to a switch, flip the switch, and the motor will run in reverse. Not too interesting for a two-wheeler but 3-4 wheelers would find this very helpful as otherwise running in reverse involves a "reversing contactor" or a reverse/forward switch external to the controller.
It appears to have regenerative braking. However they warn that regenerative braking is not enough, and that you should also have mechanical braking. Looking closely at their web site, they offer a PM controller or a PM controller with regeneration. The serial number has this coded, and the one I bought does not have regeneration.