Hi Sean, you're on the right track. Frustrating sometimes.
Agreed, safe's hypothesis is all wrong.
There's no reason why you can't do it first class just as you plan.
I can't help with the Kollmorgen question, but Bob can.
BTW, the motor that both of the kits above use, is the Unite MY1018.
It's really rated for 250W by the maker.
Currie sells the identical motor in the US market as "450W".
It's a brushed single reduction gear motor, very simple and robust.
I can run my cruiser bike (currie) at 25mph plus using that little motor,
if it is force cooled.
Kollmorgen will be better I suppose. It's certainly more efficent.
However, you can get much more than 200W power from the Unite;
enough for 20MPH operation on the level.
The EPAC kit's design is truly superior looking.
Motor is up out of the filth,
the right side is preserved for regular pedal drive gearings.
The EPAC is mechanically correct, surely better than the Cyclone kit.
Just now studying the ratings and claims:
* Recharge time 5 hours
* Range up to 25km
* Consistent maintainable top speed 35km per hour
* Motor 200 watts
* Battery 24 volt 12 amp hour
* Charger 24 volt 1.8 amp
* Weight 9 kilos
That's all right. Nothing puffed, no lies-except for "200W", which is a downrating in number only to meet AU's national limit for ebike outputs.
Gee, the cost of the entire kit (but who needs those SLA batteries?)
is only $565US. If I were making another ebike---I think I would get the epac motor mount and crankset, order the Unite from TNC , use my own batteries, and drive an internally geared hub with it.
Like (dream on) a Rohloff or a Nuvinci!
UNITE MY1018---"the little motor that can"