This unit comes to me from Yoppapamon, via this thread:http://endless-sphere.com/forums/viewto ... 62&start=0
which will eventually disappear (from the Items For Sale - New forum). AFAIK it's unused, new.
It'll be tested on the DayGlo Avengerviewtopic.php?f=2&t=15570
with a 9C 2807 front hub, powered by a 36V 9Ah NiMH at first, then if I figure out it's safe to use with the 48V 13Ah pack I'll try it with that, too (or modify it if necessary/possible). If I get the Thundersky 10s 60Ah pack built and testable with DGA, I'll try it with that to see what kind of power it will pull (since that can handle 60-120A, about 10x as much current as my NiMH packs).
Since I will have to change connectors on it or make adapters to my existing wiring, which will take some time, first I decided to do some picture reviews and note a few things about it's contruction/etc.
It has no external case English labelling at all, with the exception of a few of the numbers on it for voltages for throttle range and input voltage, and overall wattage.
The rest is in (presumably) Chinese. -1 point
No labelling of controller connectors on the case itself (unlike Lyen's), even in Chinese. -1 point
Connectors appear to by typical types used on many (most?) generic controllers.
I haven't looked up the diagram on the EVAssemble site (assuming they have one), but the one purple wire with a male uninsulated bullet seems odd; it has no mate.
It appears to be fairly well sealed against moisture, though I havent' tested it by dunking.
Inside, they've used Kapton tape between the FETs and their mounting bar,
which is a lot better than that grey sheet usually used on these things. +1 point
The caps are all 105Â°C rated,
unlike some that have just 85Â°C caps. +1 point
63V, good enough for it's rated battery voltage.
It's conformal-coated, which is an additional moisture barrier. +1 point
Assembly in general appears to be clean and neat,
but the caps are not mounted down in any way
and so will vibrate, potentially cracking the leads or their solder joints eventually. Some look like they originally were slightly touching the conformal coat, but that is pretty hard and flaky stuff so they have already come away from it, before even opening it up. They're also not neatly arranged on there, or sensibly regarding what they are touching; in the upper right corner one of them is even touching the FET's face (and thus will get significantly hotter than if it were not, probably).
There was plenty of room to have put them all upright mounted flush with the board,
but they didn't do that for reasons I can't figure out. -1 point
It's using IR FETs, assuming they're genuine (can't tell), the IRFB3607:https://ec.irf.com/v6/en/US/adirect/ir? ... RFB3607PBFhttp://www.irf.com/product-info/datashe ... 607pbf.pdf
75V, 80A, 9.0 mOhm, 56 nC Qg, TO-220AB
ID @ TC = 25C = 80A
ID @ TC = 100C = 56A
Rth(JC) (K/W) = 1.05
Power Dissipation @ TC = 25C = 140W
Not a bad FET for this application. +1 point
The heatsinking surface of the inside of the case does not mate with the FET mounting bar--there is a HUGE airgap not even filled with paste (there is paste on the bar but the gap is so big that it isn't even touching the inside of the case!).
The screws are as tight as they can get,
so the case is already pulled tight against it, meaning that either the bar or the case is not flat.
I can't quite read the MCU p/n thru the conformal coat;
best I can get is XSM08-A 085 (or X8M06-A 085, perhaps, based on the PCB silkscreening of X8M06ab_P05.4).
Based on the pads just to the right of the MCU, it does appear to be programmable, but I don't know the pinout or interface of the header, nor if there is any software available to us to do it with.
It has an LED (the white component next to those pads) presumably for troubleshooting. Don't know what it does yet as I haven't powered it up.
More to come later.