Date: Sun, 25 Apr 2010 11:55:18 -0700
Reply-To: Scott Daniel - Turbovans <scottdaniel@TURBOVANS.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Scott Daniel - Turbovans <scottdaniel@TURBOVANS.COM>
Subject: EV Vanagon, was Water Cooler System Design Flaw Workaround?
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see
http://e-vanagon.blogspot.com/
----- Original Message -----
From: "Tom Hargrave" <thargrav@HIWAAY.NET>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Sunday, April 25, 2010 10:55 AM
Subject: Re: PWM controller , was Water Cooler System Design Flaw
Workaround?
> Serious about converting a vanagon to electric drive? Then check out this
> site.
>
> http://ecomodder.com/
>
>
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@GERRY.VANAGON.COM] On Behalf Of
> Tobias Gogolin
> Sent: Sunday, April 25, 2010 11:37 AM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Re: PWM controller , was Water Cooler System Design Flaw
> Workaround?
>
> If somebody wanted to do it they could use the FET's you find on old
> computer motherboards, they are usually 30V 40-60A...
> And that is one interesting reason to do it 30 to 40 amps more or less
> from
> the batteries at a time is almost all of the capacity, of the alternator
> etc.
> So it would be more reasonable to use only as much as required 40-100 %
> instead of just on/off...
> However who has time to pioneer that type of circuit?
>
> Better to still be one of the first to convert a Vanagon to electric drive
> :)
>
>
>
> On Sun, Apr 25, 2010 at 8:17 AM, Mike "Rocket J Squirrel" <
> camping.elliott@gmail.com> wrote:
>
>> Alistair Bell wrote:
>>
>>> my rad fan is 450 W if that helps
>>>
>>> alistair
>>>
>>> PS i dont see the point in a pwm controlled fan, I would concentrate
>>> in a more sophisticated temperature interpretation, ie a PID
>>> controller... monitor rate of temp change to that fan can keep on top
>>> of things...
>>>
>>> but you know, my experience of the fans in real life is that they
>>> come on, cool the van down and go off.... seem to work fine :)
>>>
>>
>> I'm with the Bell on this one. The radiator on the fan is capable of
>> creating lots of cool water, and the thermostat opens and closes as
>> needed to draw from that reservoir. If the engine was seeing huge over
>> and undershoots in temperature then a better control system would be
>> warranted. But the large thermal mass of the engine pretty much
>> assures that temp changes will occur pretty slowly, and the thermostat
>> seems capable of keeping up with them.
>>
>> I guess I don't see a problem that needs solving. But I do enjoy fancy
>> engineering for engineering's sake, too.
>>
>>
>> --
>> Mike "Rocket J Squirrel" Elliott
>> 84 Westfalia: Mellow Yellow ("The Electrical Banana")
>> 74 Westrailia: (Ladybug Trailer company, San Juan Capistrano, Calif.)
>> Bend, OR KG6RCR
>>
>
>
>
> --
> Tobias Gogolin
> Tel. Movistar (646) 124 32 82
> Tel. Telcel (646) 160 58 99
> skype: moontogo
> messenger: usertogo@hotmail.com
>
> Blog: http://zeitgeistensenada.blogspot.com/
>
> You develop Sustainable Ranch Technology at
> http://tech.groups.yahoo.com/group/SURA-TECH
> an Open Source Electric Motor/Alternator at
> http://groups.yahoo.com/group/Performance_Axial_Flux
> and an Open Source Motor Controller at http://groups.yahoo.com/group/GoBox
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