A2B Octave / Metro modification sanity check

[81style]

Friends-
I've been contemplating doing some modifications to my 2017 A2B Octave and I would love your input. I'm willing to swap out the motor, controller, battery, and wheels, but I am not interested in making any changes to the frame, swingarm, or torque arms.

My original though was to outfit the bike with...

• QS Motor 3000W 205 50H V3 E-bike Spoke Hub Motor

• Sabvoton SVMC60080 controller

• 16s8p Li ion battery, rear rack mounted

However, some forum thread reading leads me to believe the above would mangle the swingarm beyond all recognition and/or instantly flip the bike over at the slightest touch of the throttle.

https://endless-sphere.com/forums/viewtopic.php?f=3&t=89125

So... how can I reign my ideas back into the realm of sanity?
What do you think would be the maximum power / torque the stock frame/swingarm/torque arms can safely handle?
Would I be better off keeping my Octave as-is and pursuing my hot rodding ambitions on an EEB platform instead?

Thanks.

 

[eee291]

Just limit the battery current to 50A and phase to something like 100-150A and you'll be fine. Maybe increase throttle delay or something.
Even on Max settings i doubt you'll bend anything.

I ran a 3KW+ hub on a cheapo frame for months. And as long as the torque arms are adequate you'll be fine.

It was a bike very similar to this one.

 

[81style]

I ran a 3KW+ hub on a cheapo frame for months. And as long as the torque arms are adequate you'll be fine.

That is reassuring; thanks. I'm still concerned about loading so much weight on the rear rack though. A 16s8p battery plus controller weighs in at 10kg total. That amount of mass so high up and so far back seems precarious when coupled with even moderate amounts of torque.