Here's some pics of the test fit for the Cyclone. As you can see, the motor has spacers between the frame and motor bracket. Those serve 2 purposes on the Boardwalk
1) They allow the motor bracket to clear the rear wheel. Without the spacers, the bracket has to sit higher, which then naturally makes contact with the rear wheel.
2) The motor sprocket has to be lower than the chainring to achieve a decent chain line between those 2 components. Its hard to tell from the pics, but there's ~2" there.

I may end up modifying the braket so that I can mount the motor higher, but then it will require a smaller chainring. I could go that route, but would kill pedal-assist for the motor. I'll have to think about that one for a while. I could also do Cyclone's 3 chainring conversion to improve my chainline and mounting options. So many decisions.

Bike still folds compact, but there's now almost a 1" gap between the axle ends when folded. This is after adjusting the right brake lever so that it doesn't interfere with the motor. If I loosen the brake handle and slide it a bit, the 2 ends should fold together as it did before.