Saturday 25 September 2010

Review on Eko Strike From Eko Vehicles

The review was shared by Mr.Desouza who had once pleaded the "Supreme court of India" to promote electric vehicles @ http://www.evhub.in/content/petition-to-supreme-court-of-india-to-issue-direction-to-government-to-promote-electric-vehicles/

In his word's " I own a EKO Strike for 63 days now. I advocated  profusely in favour of e0bikes to everyone I met. However, my confidence is belied. Battery replacement is one aspect that will dissuade any  person  who is the  most committed EV protagonist.
On the 60th day the battery of the vehicle I own began overheating & terminals  turned bluish. There is one year warranty so, for the moment I shall not bother. In case this recurs after warranty with batter cost being Rs 9800 vehicle cost Rs.25000, considering the period of unused state it does not become evonomical at all.
Further, one aspect that probably EVs will never be able to answer. That is sustained powerband performance. In an IC Engine till, the last drop of fuel the torque/power is uniform. IC engine develops its own power that is captive & uniform. Whereas, electric motor does not produce its own power but depends on enery from a stored source. When the stored source has ample energr motor produces excellent torque & power. When souece progressively depletes, the torque & power too depletes.
Further, gradient climbing ability is again a restricting factor. Vehicle will have to beridden or driven  within that climbing limit. If one exceeds, either motor will burn or batteries will be impaired due to over heating.. There has to be a cut off mechanism if motor or battery is overloaded. Manufacturer should advise buyers to operate within  specified climbing gradient. Even use of LIthium ion. LiMn or LiFePO4 batteries may improve the performance but, considering the high cost, it can never be a mass appeal option. Unless EVs  become one of mass appeal there will never be a suces for EVs.
Pollution or no pollution, in sustained torque/power capability, IC Engines will continue to rule!
With these limitations that have not been addressed yet, EVs at best will be  a stand by mode of conveyance & not prime ones! "

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