ElectricMotorcycleForum.com

... I have my degree in physics and Electronic ....

My bad.  I studied engineering in college and wanted to be an aeronautical engineer.  Got board pushing numbers in math and then ran off to get language and international affairs degrees instead.  

If only all people could have the Cycle Analyst installed on their zero like i did, we could compare in Wh per km or Wh per mile our different experience.. this is THE number to look at for efficiency.  

I am interested in seeing what the difference in Wh per unit of range and the max range would be with an aerodynamic shell on the bike compared to the stock profiles of the zero bikes.  Still hoping they will put some sexy light body work on them in future models - something like these -





Enjoy the Ride,
Polartek

I drove my 2010 around my neighborhood until the bike started multi-beeping at me to get the feel for my real-life range.  The original 2010 range was tested by the manufacture doing 25mph on a flat surface without stops/starts.  They got around 44 miles/70.4 km in that range test.  I got 34 miles range on my test with stops and starts and max 25 mph.  The faster you go the more power it takes to overcome wind resistance and the less range you can get.  Zero's rating on the new 9Kw batteries on the 2012 at 114 miles/182km.  At higher speeds (70mph) their stats say the 9 Kw will go about 63 miles/101km - a 45% reduction in range.  Temperature can also have an impact on energy losses, but no one rates that impact.  I have run it dead once and was only a mile away from home.  I had to run it up to a light pole and plug in for 20 minutes to get home.  I try not to stretch past 24 miles so I don't have to worry about making it to my destination.   I also recommend downhill trips to for better range! 

Enjoy,
Polartek

Saddleman Tunnel bag on mine -  Approx. $120.
Works to carry most items.  It would be nice if it expanded upward for my larger loads and the sides were a bit bigger, but it works fine for 99% of my daily needs and my quick run to the grocery store.  The propane tanks are a big big for it. 
http://www.saddlemen.com/en/products/bags-luggage/seat-tail-a-pillion-bags/seat-tail-a-tunnel-bags/item/22298-ts1450r-tunnel/tail-bag-standard-tunnel


-Polartek

I just picked up a used DS that had 1400 miles on it and am breaking myself in.  I ran about 18 miles today after a full charge and it is down to three bars when stopped and it was down to no bars and blinking warning while I was on the move.  With 10 bars, the range on my DS with my riding style looks to be a max of 25.5 miles.  I have two other bikes in my stable, a sport bike and a power cruizer, so backing off on my wrist action will be difficult.  The DS is still a kick to ride and being able to listen to everything around me instead of hearing the engine is a really nice experience.  I was looking to get a minimum of 40 miles from a charge but the owners manual says to look toward 30 miles at the higher speeds I see on my commute.  Once I switch to street tires and get it cleaned up, I hope to squeeze another 5-10 miles out of my range.




Enjoy the ride,
Polartek