Since you are a regular there, can you compare the performance of the battery from that ride to how your Alta may have performed? Would you likely have had thermal limitations on the Alta pushing it like that?
Absolutely. I've been keeping a finger on the thermal department by making it a point to place my hand on various components of the bike to see how warm/hot they feel. Wish i had an IR thermal camera or something to accurately assess.
After my 30 minute moto, the Varg battery, motor, and inverter were only warm to the touch, and this was in ~80*F ambient temperature. I could place my whole hand on the Varg pack and leave it there and it felt like a luke warm coffee mug, as well as the motor and inverter. I'm trying to see if i can get a hold of the temperature graphs for my rides.
My Alta MXR on the other hand, after a 15-18 minute moto, the battery pack, motor, and frame was HOT to the touch. The battery, motor, and frame was so warm that i couldn't leave my hand on it for more than a couple seconds.
So far, the Varg seems to be running much cooler than my Alta.