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Jim Kimo
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re: Electric motorbike teardown
Jim Kimo   10/27/2010 12:33:46 PM
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Thought you might find this interesting. JN

Abrahim
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re: Electric motorbike teardown
Abrahim   10/28/2010 1:52:09 PM
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dont know when will the manufacturer understand the difference between 'here & now' and 'in the long term' .. i have the option of a 7k gas engine or a 11k motor drive .. it boils down to my ability of coughing up 11k 'here&now' which more than likely i will be unable to do .. agree i may save a zillion $ later but the seller will want his 11k NOW.. so the point is simple .. make it cheap even if u have to cut back on some fancy fittings.

WKetel
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re: Electric motorbike teardown
WKetel   10/29/2010 3:22:37 AM
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What I did not see was much discussion of the cost and effort for replacing the batteries when they fail to hold a charge after a few years, or fewer years. Nobody wants to talk about that part. Or will replacement batteries even be available in 3 years? That is what will kill the sales of electric bikes and cars. Why would I wish to spend $11K for a bike and then need to spend another $8K in a few years to be able to use it. For that money I can get a gas engine bike that will last me easily 15 years.

Silicon_Smith
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re: Electric motorbike teardown
Silicon_Smith   10/29/2010 5:14:31 AM
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I think the opinion differs. For some people long term benefits outweigh the "here and now" factor. Just have a look at how the mid segment car markets have fared with respect to petrol and diesel versions. And within the same market, the mileage/cost bearing on sales, and you ll understand that a majority of the performance crowd, still considers the long term perspective as primary.

yurmom
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re: Electric motorbike teardown
yurmom   11/4/2010 3:44:39 PM
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Title should have been "Electric Scooter Teardown". Please bring us a teardown of a product that is intersting. One that breaks the golf-cart paradigm around EV's. Both the Brammo and Zero motorcycles are much higher performing REAL electric motorcycles, and less expensive to boot: http://www.brammo.com/ http://www.zeromotorcycles.com/ Cameron

prabhakar_deosthali
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re: Electric motorbike teardown
prabhakar_deosthali   11/21/2010 6:33:17 AM
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This article is pretty old ( 2007) and much water must have flown under the bridge between then and now. A couple of years back I visited Milan and was shown a complete design of an Electric Sports bike. Newer battery technologies (FePO4 based ) were being explored. I think what we need to discuss here is what is the state of art today as far e-bikes are concerned. Regarding the battery replacement cost - a way is being explored where batteries need not be owned by the bike owners . Like gasoline stations there could be battery exchange stations where a discharged battery could be swapped for a recharged battery in a matter of minutes. The e-bike owner will pay per usage . This will reduce both the up-front cost of the vehicle and the cost of battery replacement a couple of years down the line. As the e-bike population grows such options will become commercially viable



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As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

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