Mission One electric sportsbike

**Matt Bleck** · 13th August 2009, 13:29

This bike boasts a top speed of 150 mph, a range of 150 miles on one charge and 100 foot-pounds of torque.

I'm not sure about the look of it and $70,000 is a bit step for me!

http://www.ridemission.com

**R6_kid:Me** · 13th August 2009, 15:16

Looks mean in black.

I also saw that the failed Motocycz C1 MotoGP bike has been turned into an electric bike as well.

**p.dath** · 13th August 2009, 18:13

Consumer class (as in affordable and practical) electric vehicles are getting so close now. We need more vehicles like this to help improve the technology and knowledge in this area.

**scracha** · 13th August 2009, 18:16

They haven't put much effort into it. Why does it have a chain? Why isn't it two wheel drive.

**sil3nt** · 13th August 2009, 18:37

Looks like a camel.

**bogan** · 13th August 2009, 18:59

Originally Posted by p.dath

Consumer class (as in affordable and practical) electric vehicles are getting so close now. We need more vehicles like this to help improve the technology and knowledge in this area.

The techs already there, lots of homer projects are built as consumer class bikes. Jozzbikes Aprilia can do 80mph and 40 mile range, can probly get the components for bout 6-7k nzd, plus rolling frame.

**p.dath** · 13th August 2009, 19:01

Originally Posted by bogan

The techs already there, lots of homer projects are built as consumer class bikes. Jozzbikes Aprilia can do 80mph and 40 mile range, can probly get the components for bout 6-7k nzd, plus rolling frame.

I don't think the battery technology is really quite there yet. We need a lighter battery combined with something like a hyper-capacitor that doesn't cost as much as the whole vehicle.

**bogan** · 13th August 2009, 19:14

Originally Posted by p.dath

I don't think the battery technology is really quite there yet. We need a lighter battery combined with something like a hyper-capacitor that doesn't cost as much as the whole vehicle.

It depends on what you want out of it, 40 miles is plenty for a nice sunday ride, not enough for a weekend away. Priced up a decent set of lithium iron phosphate cells, 60-80k range at legal speeds would be around 2k, can supply massive currents, 30kw-ish, and engine brake at 10kw-ish.

**jono035** · 13th August 2009, 20:02

Originally Posted by scracha

They haven't put much effort into it. Why does it have a chain? Why isn't it two wheel drive.

The extra un-sprung weight provided by hub-motors would be my guess. Also, generally, a single higher-power electric motor will be more efficient in terms of power-to-weight than 2 smaller motors. The only real benefit I can think of from hub-motors would be being able to regeneratively brake on the front wheel, but that wouldn't be worth throwing the handling out the window for...

**jono035** · 13th August 2009, 20:33

Originally Posted by bogan

It depends on what you want out of it, 40 miles is plenty for a nice sunday ride, not enough for a weekend away. Priced up a decent set of lithium iron phosphate cells, 60-80k range at legal speeds would be around 2k, can supply massive currents, 30kw-ish, and engine brake at 10kw-ish.

30kW is 40hp. Assuming you need around 15hp to cruise at 100km/hr on a reasonably light bike then that is around 10kWh worth of battery pack to run it for an hour which would get you a best case of 100k range, which I would guess would shake down to more like 50 once you account for losses around the place and regeneration inefficiencies... From the Wikipedia article on Lithium Iron Phosphate batteries it states a current energy density maximum of 110Wh/kg, which would be a 90kg battery pack. The price listed is minimum of US$0.50/Wh, so USD$5k for that same battery pack.

It seems the numbers work out reasonably well although that's a lot of battery weight. 10kg for motor, 10kg for controller/wiring and you're at 110kg, 20L of fuel would make that equivalent to a 90kg petrol engine... I'm definitely interested to know where you priced those batteries from though...

**p.dath** · 13th August 2009, 21:23

Originally Posted by bogan

It depends on what you want out of it, 40 miles is plenty for a nice sunday ride, not enough for a weekend away. Priced up a decent set of lithium iron phosphate cells, 60-80k range at legal speeds would be around 2k, can supply massive currents, 30kw-ish, and engine brake at 10kw-ish.

That sounds too good to be true. Is that US$ maybe?

**jono035** · 13th August 2009, 21:38

Originally Posted by p.dath

That sounds too good to be true. Is that US$ maybe?

Might be in USD and not including shipping from China. Very interested to know the specs on the cells and the pricing...

**bogan** · 14th August 2009, 09:50

Its based on a calculated 100kmhr power consumption of 5.3kw, with a pack size of 40aHr at 72V, or 2.9kwhr, ahh bollocks, i used the old and broken spreadsheet in the previous post. But 40ahr could get you 55km, and a 40 ahr pack from here is 1550NZD + shipping from the states, weighing in a 36kg. So maybe for that price its still in the commuter arena, rather than a sunday rider, then again 36kg + 20 for the motor and controller, is probably lighter than most IC engins + pipes + gas +rad etc, so addining another 20ahrs would give it a decent range too.

**jono035** · 14th August 2009, 11:52

Originally Posted by bogan

Its based on a calculated 100kmhr power consumption of 5.3kw, with a pack size of 40aHr at 72V, or 2.9kwhr, ahh bollocks, i used the old and broken spreadsheet in the previous post. But 40ahr could get you 55km, and a 40 ahr pack from here is 1550NZD + shipping from the states, weighing in a 36kg. So maybe for that price its still in the commuter arena, rather than a sunday rider, then again 36kg + 20 for the motor and controller, is probably lighter than most IC engins + pipes + gas +rad etc, so addining another 20ahrs would give it a decent range too.

Interesting stuff, thanks for posting the numbers. Is the 5.3kW for 100km/hr a standard rule-of-thumb type value or has this been calculated for your specific application?

What are the motor and controller that you are using and roughly what are they worth? Is there a thread floating around with any of this info?

I'm doing my masters in electrical engineering on EV related stuff at the moment, but I've never really run the numbers on an electric bike before, makes a lot of sense and is a much easier target than a full EV.