I am assuming the open source controller is roughly the same size as my existing controller. I donated the heat sink for the Cougar, and remember what size that is, so I do have some reference of scale from the photos.
Right now, I am just planning on yanking out my 72V Curtis and dropping the Cougar in its place.
I continued work on the battery box/cover.
Here's the view from the back.
Here's the view from the front.
As you can see, I trimmed how deep the "seat" board is. Later, I will add a short vertical piece to the bottom front too.
Here's the middle vertical piece.
It's hinged, and provides are area for the charger, disconnect, main contactor, and anything else I have forgotten. Of course all that stuff will be nicely bolted down, not just pushed in there as it is in the photo!
With the middle piece flipped up, the bottom can also swing up for access to the bottom batteries. This is hinged using the original car hinges that the seat back was mounted on to fold down the back seat.
