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Forum Index : EV's : EV 6

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Trev

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Joined: 15/07/2006
Location: Australia
Posts: 640
Posted: 01:05am 06 Jan 2013
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Russ,no 12v versions.
perth, Range would be the biggest issue. Cycle life is affected by deep discharges or high charges. Worst case scenario.....one cell at 2.8v and another cell at 4.0v. The pack cannot be dicharged without damage or charged without damage.
Trev @ drivebynature.com
 
Trev

Guru

Joined: 15/07/2006
Location: Australia
Posts: 640
Posted: 01:50am 06 Jan 2013
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The vacuum pump wore out the set of brushes. I could not get a replacement set of brushes, because the company has moved to a new brush supplier and changed from 4 brushes to 2 brushes in their rotary pumps. The 2 brush motors are therefore wired differently too.

So I thought, since the pump is no good, no harm or loss if I mess it up more. I made a set of brushes out of copper. They didn't work very well.

This rotary pump was fitted around 6 October 2009. New pump fitted 4 November 2012. That is close on 3 yrs. Speedo reading posted 6 October 2009 was 370746. Speedo reading for the new pump 426928. The old rotary pump did 56128 km.

The new vacuum pump is a new design by the same company. It uses less power, is lighter and super quiet. It is not quite as quick to produce the vacuum, but really, it is only milliseconds different. A great pump, and cheaper too.






Trev @ drivebynature.com
 
perth
Newbie

Joined: 25/11/2012
Location: Australia
Posts: 12
Posted: 05:59am 12 Jan 2013
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[quote]Last test I used 21.9kw to do 102km. (just checked old posts, made a mistake in the distance travelled, written 202km, should be 102km). So while it is not much, the WarP 11 is better for efficiency, than the ADC 9, in this vehicle at 100km/hr. [/quote]

any idea why this is the case? i wouldv thought theyd pull the same amount of amps for the same speed.
maybe its the same principle as bigger engines r better efficiency at highway speeds?
 
Downwind

Guru

Joined: 09/09/2009
Location: Australia
Posts: 2333
Posted: 08:07am 12 Jan 2013
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Trev,

Perhaps something like a standard set of alternator brushes filed to size (very easy to do) might work better, was the old brushes high copper content or higher carbon.

All the same not a bad life from the old pump.

Pete.
Sometimes it just works
 
Trev

Guru

Joined: 15/07/2006
Location: Australia
Posts: 640
Posted: 12:17pm 12 Jan 2013
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Perth, because the larger diameter motor has more torque for the amps in, my guess is, high amps are not held as long as the vehicle can get up to speed quicker.

Yeh Pete, that would have been a better idea, they were carbon brushes.
Trev @ drivebynature.com
 
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