OK, well, I added side panels to the Snow-Mo-Ped and went for a longer ride (6 minutes). The panels do, indeed, keep the snow out of the system. What I found is interesting;
First, powder snow up to 18 inches deep does not stop the bike.
Second, hard pack snow (snowmobile trails) are awesome on this thing!
Third, powder snow uses up HUGE power. In 5 minutes of full throttle riding in 13 inch deep powder, I used 16ah from my 64 ah pack! So, it looks like 20 minute run time is what I could expect if riding in very deep powder.
Fourth, the motors run at around 100 degrees F when run super hard like this. Perfect!
Lastly, I found that full throttle nets around 10mph in the powder due to massive, continuous, wheelspin. However, half throttle gave around 15mph. This was consistant performance. So, next ride I will deal with lower throttle setting for more speed and longer range.
I am actually quite surprised how well this thing runs. It is one thing to have huge acceleration for 4 seconds, then cruising around at much lower power. It is, entirely, another thing to pull high power for extended periods. In the snow, I was pulling over 13,000 watts for 2 to 3 minutes continuously without a hiccup.
I am a happy camper. Now all I need to do is install the headlights and wait for more snowmobiles to pack down good trails for me.
I sure am glad I have a 2.5kw charger for this thing!
Matt