Sensei - Electric Ninja 250 - Page 2

sendler · June 26th, 2011, 06:40 AM

Still no report?

billmi · July 2nd, 2011, 01:22 PM

Oops!
I thought this thread had died so I hadn't checked it in a while. I missed round 2.
Thanks for all the positive comments. I think most of the questions are addressed on the site I put together for it: HTTP://corin.com/sensei
Posted via Mobile Device

sendler · July 2nd, 2011, 05:01 PM

Quote:

Originally Posted by billmi

Oops!
I thought this thread had died so I hadn't checked it in a while. I missed round 2.
Thanks for all the positive comments. I think most of the questions are addressed on the site I put together for it: HTTP://corin.com/sensei
Posted via Mobile Device

Great write up. As you propose, masses can follow if a few show the way. Unfortunately, my commute might be a little too tough for electric. I must have 75 mph top speed, cruise at 68, and a 50 mile range. If I could get up to speed with a 5000 rpm motor and 110 Whr/mile I could make it one way on a 72v/100Ah battery pack at 25% remaining but now they are too big to fit in the frame. For now, I will have to be content with my Honda CBR250R getting 84 mpg US. I am sure the people at Ecomodders would be very interested in your bike. I wil also check out elmoto for more info.
.
http://ecomodder.com/
.

Pyro · July 3rd, 2011, 10:07 AM

Quote:

Originally Posted by sendler

Great write up. As you propose, masses can follow if a few show the way. Unfortunately, my commute might be a little too tough for electric. I must have 75 mph top speed, cruise at 68, and a 50 mile range. If I could get up to speed with a 5000 rpm motor and 110 Whr/mile I could make it one way on a 72v/100Ah battery pack at 25% remaining but now they are too big to fit in the frame. For now, I will have to be content with my Honda CBR250R getting 84 mpg US. I am sure the people at Ecomodders would be very interested in your bike. I wil also check out elmoto for more info.
.
http://ecomodder.com/
.

I could live with 160Wh/km (~250Wh/mile) if it could have similar performance as the current 250cc engine.

The battery tech just isn't there yet to make it practical for me yet.

If they can double the energy density, I could realisticly start commuting without needing to make special arrangements.

billmi · July 5th, 2011, 10:49 AM

Sendler, yep that would be a lot of battery to pack on a Ninja 250 frame. Biggest I've seen was 90Ah Thundersky cells (http://www.evalbum.com/1407), and that was pushing it for ground clearance (IMHO). On a bigger frame, that wouldn't be as big of a deal though - it's the cost that would start getting in the way compared to the cost of a gas bike for the same run.

Definitely what your daily ride is like comes into play whether it's possible to make a switch. My downtown office is 13 miles away on surface streets (45mph tops) so it's very doable.

ducducgooseit · July 5th, 2011, 11:41 AM

Do you park in a secure garage? Seems to me that the scavenger thieves would want to "liberate" that big ole battery for its contents.

billmi · July 6th, 2011, 11:29 AM

At home, the garage is secure. At the office it's open parking, but not a high crime area. Not to mention it would be easier to steal the whole bike than get the batteries out in a parking lot - in which case a gas bike, being easier to use/sell/strip for marketable parts is a higher profile target.

4950cycle · March 16th, 2017, 08:24 PM

Your assuming most thieves are smart enough to evaluate all that.

June 26th, 2011, 06:40 AM	#41
sendler ninjette.org member Name: Scott Location: Syracuse Join Date: May 2011 Motorcycle(s): 09 Ninja 250, 2011 Honda CBR250R, 07 Ninja 650 Posts: 212	Hello Still no report?

March 16th, 2017, 08:24 PM	#48
4950cycle ninjette.org member Name: John Location: Dunnellon, FL. Join Date: Mar 2012 Motorcycle(s): 06 EX 250, 75 CB 125 S, 2011 Fang Bobber Posts: 81	Your assuming most thieves are smart enough to evaluate all that.
	1 out of 1 members found this post helpful.

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July 2nd, 2011, 01:22 PM	#42
billmi ninjette.org member Name: Bill Location: Palm Bay, FL Join Date: Jul 2009 Motorcycle(s): 82 XV750, 99 DR200SE, 04 DR200SE, 08 DR200SE, 95 EX250 Posts: 71	Oops! I thought this thread had died so I hadn't checked it in a while. I missed round 2. Thanks for all the positive comments. I think most of the questions are addressed on the site I put together for it: HTTP://corin.com/sensei Posted via Mobile Device

July 5th, 2011, 10:49 AM	#45
billmi ninjette.org member Name: Bill Location: Palm Bay, FL Join Date: Jul 2009 Motorcycle(s): 82 XV750, 99 DR200SE, 04 DR200SE, 08 DR200SE, 95 EX250 Posts: 71	Sendler, yep that would be a lot of battery to pack on a Ninja 250 frame. Biggest I've seen was 90Ah Thundersky cells (http://www.evalbum.com/1407), and that was pushing it for ground clearance (IMHO). On a bigger frame, that wouldn't be as big of a deal though - it's the cost that would start getting in the way compared to the cost of a gas bike for the same run. Definitely what your daily ride is like comes into play whether it's possible to make a switch. My downtown office is 13 miles away on surface streets (45mph tops) so it's very doable.

July 5th, 2011, 11:41 AM	#46
ducducgooseit Name: ... Location: ... Join Date: May 2009 Motorcycle(s): ... Posts: 999	Do you park in a secure garage? Seems to me that the scavenger thieves would want to "liberate" that big ole battery for its contents.

July 6th, 2011, 11:29 AM	#47
billmi ninjette.org member Name: Bill Location: Palm Bay, FL Join Date: Jul 2009 Motorcycle(s): 82 XV750, 99 DR200SE, 04 DR200SE, 08 DR200SE, 95 EX250 Posts: 71	At home, the garage is secure. At the office it's open parking, but not a high crime area. Not to mention it would be easier to steal the whole bike than get the batteries out in a parking lot - in which case a gas bike, being easier to use/sell/strip for marketable parts is a higher profile target.