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PostPosted: Tue May 20, 2008 8:30 pm 
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Daffodil 1275
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Location: Bathurst
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Interested to know the weight of the motor, weight and size of batteries. How much extra would Lithium Ion batteries be??

The motor gearbox combined weighed 80kg (50kg for motor, 30 for box) The batteries will weigh 144kg, so the mini will only weigh a little more than standard. but the battery pack can be altered to met your driving requirements. For example I could use 80kg of batteries which push out more power but my range would be allot less, or a pack which weighed 250kg may have less performance but the range may be over 150km. Its horse for courses. Lithium Ion would be very good but the upfront expense is to great for my budget, I looked into them a little while ago and I think it was around $12,000 for thunder sky lithium ion batteries pack which i think weighed about 80kg and had about 20kw/h which would give the mini about a 200km range.

Quote:
Would the setup be better fiited with a CVT auto gearbox perhaps to help utilise than linear torques curve??


Im not sure how a CVT transmission works but it could be a good idea

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PostPosted: Tue May 20, 2008 9:48 pm 
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Not to put a dampener on this project but looking at the FAQ on http://www.aeva.asn.au/faq.htm it seems the electric mob have no understanding where electricity comes from - ie zero emissions!!.

Not that I mind - it keeps me in a job :)

Daniel

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PostPosted: Wed May 21, 2008 10:18 am 
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Archangel007 wrote:
If we all get on the electric bandwagon, prices for components would have to come down. :wink:


and electricity prices will soar!!

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PostPosted: Wed May 21, 2008 11:15 am 
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DOZ wrote:
Not to put a dampener on this project but looking at the FAQ on http://www.aeva.asn.au/faq.htm it seems the electric mob have no understanding where electricity comes from - ie zero emissions!!.
Not that I mind - it keeps me in a job :)
Daniel


let's not forget that the gearbox still needs lubrication...

is there actually a need for a gearbox?

or is there an alternative that lessens the dependence on oil?

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PostPosted: Wed May 21, 2008 11:44 am 
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cush wrote:
DOZ wrote:
Not to put a dampener on this project but looking at the FAQ on http://www.aeva.asn.au/faq.htm it seems the electric mob have no understanding where electricity comes from - ie zero emissions!!.
Not that I mind - it keeps me in a job :)
Daniel


let's not forget that the gearbox still needs lubrication...

is there actually a need for a gearbox?

or is there an alternative that lessens the dependence on oil?


There are plenty of sources for oil that don't come out of the ground (castor beans and whales have been used in the past) likewise electricity. Most of the electricity I use is zero emissions (if you discount the huge mount of carbon released when they made the cement that the dams are built from).

Tim

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PostPosted: Wed May 21, 2008 12:24 pm 
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most of my electricity will soon be produced by the sun, :D thats if the latest Labour Budget doesn't stuff up my plans :evil: :x
If I had a few more panels I could run an elec car for almost nothing (which is my plan in a few years)


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PostPosted: Wed May 21, 2008 12:34 pm 
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cush wrote:
let's not forget that the gearbox still needs lubrication...
is there actually a need for a gearbox?
or is there an alternative that lessens the dependence on oil?


Oil is a regererative source, we just use it faster than it reproduces itself.
If all the cars of the world went electric, there'd be plenty of oil to go round.
Gearbox oil lasts longer than engine oil anyway.
:D


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PostPosted: Wed May 21, 2008 12:43 pm 
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Location: Wodonga - Vic/NSW border
Harley wrote:
cush wrote:
let's not forget that the gearbox still needs lubrication...
is there actually a need for a gearbox?
or is there an alternative that lessens the dependence on oil?


Oil is a regererative source, we just use it faster than it reproduces itself.
If all the cars of the world went electric, there'd be plenty of oil to go round.
Gearbox oil lasts longer than engine oil anyway.
:D


synthetic gearbox oil

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PostPosted: Wed May 21, 2008 1:06 pm 
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cush wrote:
or is there an alternative that lessens the dependence on oil?


Even growing fuel has its problems as being debated now, by taking food away from poorer nations.

I like this idea. Anyone want to give it a try?
http://www.articleanswer.com/Run_Your_Car_With_Water4.htm

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 Post subject:
PostPosted: Wed May 21, 2008 1:08 pm 
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Harley wrote:
cush wrote:
let's not forget that the gearbox still needs lubrication...
is there actually a need for a gearbox?
or is there an alternative that lessens the dependence on oil?


Oil is a regererative source, we just use it faster than it reproduces itself.
If all the cars of the world went electric, there'd be plenty of oil to go round.
Gearbox oil lasts longer than engine oil anyway.
:D


i wonder how much non-synthetic oil goes into the machinery that power/transports the synthetic oils?

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 Post subject:
PostPosted: Wed May 21, 2008 2:01 pm 
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Rookiepilot wrote:
Even growing fuel has its problems as being debated now, by taking food away from poorer nations.


oh i know.... i deliberatley avoid starting the food crisis conversation in this thread...

the alternative was an alternative to using a normal gearbox..

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PostPosted: Wed May 21, 2008 2:10 pm 
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Rookiepilot wrote:
cush wrote:
or is there an alternative that lessens the dependence on oil?


Even growing fuel has its problems as being debated now, by taking food away from poorer nations.

I like this idea. Anyone want to give it a try?
http://www.articleanswer.com/Run_Your_Car_With_Water4.htm


I've got a buddy who has been working on one for a while, but he's stalled I think....

it's on my list of projects - here's a good DIY -> http://www.ehow.com/how_2262517_hho-bro ... lyser.html

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 Post subject:
PostPosted: Wed May 21, 2008 2:57 pm 
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This discussion reminds me of something.


http://www.ausmini.com/forums/viewtopic.php?t=21896&highlight=

:wink:


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 Post subject:
PostPosted: Wed May 21, 2008 5:13 pm 
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thats a cool idea, but something that has given me the shits for a while is why cant you attatch an alternator to a pulley off the electric motor so the batteries dont go flat?

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PostPosted: Wed May 21, 2008 5:32 pm 
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meeni wrote:
thats a cool idea, but something that has given me the shits for a while is why cant you attatch an alternator to a pulley off the electric motor so the batteries dont go flat?


No, that would be perpetual motion. You would never charge the batteries, yet they would never go flat and you would keep using them.

Basically you would be running the motor off the batteries, then running the alternator off the motor, so there is no way the alternator would put out enough power to keep the batteries topped up. If the motor and the batteries were both 100% efficient (which is also impossible) then you would generate enough power to top the batteries up with nothing spare to drive the car.

Edit:

Example: say the electric motor draws 10kW of electrical power. It converts this to 9kW of mechanical power (at 90% efficiency). The alternator uses this 9kW to generate, say, 8kW of electrical power to charge the battery. You have a net loss in enery of 2kW, so if you continue to operate like this the battery will go flat.


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