The Technology Behind Electric Motorcycles Kick Gas The Technology Behind Electric Motorcycles -Discussing some background on EVs, particularly motorcycles, what is out there now and what the cutting edge is. -Talk about the environmental impacts, but not a ton of time on this because I'm guessing you've talked about this already (and there's not a ton of time). -What are the main challenges, and discuss the different types of batteries and motors, the pros and cons of each. -And finally really drive home that innovation is needed (especially since most electric motorcycles are basically using repurposed fork lift or golf cart motors right now...) Then open up to questions and discussion. Maybe take 45 min for >>> this, then head outside to see my bike.

‘Cause they’re awesome Why build an electric motorcycle? …and have some fun! #1 ‘Cause they’re awesome Because I can… http://www.youtube.com/watch?v=369h-SEBXd8 (1:45) http://www.youtube.com/watch?v=fHtAkM3CYLA To save the planet…

The awesome No gas Zero emissions 1₵ per mile Torque! Attention  The not so awesome Limited range Coal  (for now) Too much attention

Well to wheel Energy (kJ / km) Gasoline Gas Hybrid Electric

Well to wheel CO2 (g / km) Gasoline Gas Hybrid Electric

ectric Building an el Moto Batteries Chassis Motor

Chassis Look on Craigslist and Ebay No motor = less $$ Large motor = more room for batts 600-1000cc $500-$1000 for a donor chassis Whatever you can find

Batteries Lead Acid Lithium Pros  Cheap Simple Robust Cons  Heavy Less power <500 cycles Pros  Light weight Good power >2000 cycles Cons  Expensive Need BMS

Motors DC Series AC Induction

Motors DC Series AC Induction Field Armature

DC Series AC Induction Motors Also… Permanent Magnet DC Permanent Magnet AC Sepex Switched reluctance ... more … DC Series AC Induction Field Field Armature Pros  Cheap Simple Torque! Cons  Low RPM Less Efficient Maintenance Pros  High RPM Efficient No brushes Regen! Cons  Expensive Complex

What’s out there? Zero 60 mph 30-50 mi range $10,000

What’s out there? GPR-S 60 mph 30-50 mi range $10,000

What’s out there? Mission R 140 mph 150 mi range Not for sale (yet)

What’s out there? SWIGZ (Chip Yates) 150 mph Podium finish against ICE $??? (A LOT)

What’s out there? DIY 60 mph 50 mi range $3-10k

Electric motorcycles are fast and fun Environmentally friendly But…INNOVATION IS NEEDED That’s you!

Resources Secrets of El Ninja (by John Bidwell) elmoto.net endless-sphere.com/forums EValbum.com visforvoltage.org evmc2.com pluginamerica.org juiceddragracing.com Just Google “EV parts”