ElectricMotorcycleForum.com
General Category => Pics and Vids => Topic started by: skeezmour on October 09, 2013, 03:48:51 AM
-
More pics to come.
(https://scontent-a-sea.xx.fbcdn.net/hphotos-ash3/p480x480/1375916_587558564614706_1291210577_n.jpg)
Follow us at http://www.brutusmotorcycle.com/ (http://www.brutusmotorcycle.com/) or at https://www.facebook.com/pages/Brutus-Electric-Motorcycle/194396447264255 (https://www.facebook.com/pages/Brutus-Electric-Motorcycle/194396447264255)
-
The cafe racer looks cool but the V9 looks thrown together and is outrageously heavy. Where does it hold 33kwh of battery? Is there more in the rear fairing?
-
I don't believe the existing prototype has the 33 kWh battery. The rear bags will remain free for storage with either battery, the battery will be stored within the bike frame.
A tight hexagonal packing (http://web.archive.org/web/20121113223345/http://www.ntsworks.com/New_Battery.html) with NCR18650B has an energy density of ~830 Wh/L. Add 30% for enclosure, packaging and thermal transfer material etc and you have ~640 Wh/L.
33 kWh / 640 Wh/L = 51.5L.
The 2013 Zero battery enclosure (ZF11.4) is 378x252x430.5 mm, or 41L, and has an energy density of 240 Wh/L. Notably this includes BMS electronics and cabling.
http://www.zeromotorcycles.com/powertrains/powertrains-sales-sheets.pdf (http://www.zeromotorcycles.com/powertrains/powertrains-sales-sheets.pdf)
So add 25% to the 2013 Zero pack size and double its weight (340 pounds) and you'd have a very compact 33 kWh pack.
-
What protomech said is very close. Yes it is heavy compared to say a Zero or Brammo but is very competitive in weight to similar type bikes from Honda/Harley/Victory ect, plus we are almost guaranteed to be much quicker then the gas bikes. We have already done a ~4.11 0-60 run with it compared to ~6 seconds for a similar gas bike.
If your in the Vegas area stop by and check it out for yourself.
-
The picture you posted didn't load at work but I can see it now on my home PC. Its much bigger than I thought. Do you have any detail shots of the pack and motor etc?
It isn't really to my taste although the engineering is impressive. The Brutus 2 Cafe looks more to my taste but sadly I can't imagine I'll be near Vegas within the next year or 2.