Date: Mon, 21 Feb 2011 20:53:10 -0600
Reply-To: Tom Hargrave <thargrav@HIWAAY.NET>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Tom Hargrave <thargrav@HIWAAY.NET>
Subject: Re: Substitute for aircooled thermostat
In-Reply-To: <57AFF0CD-D589-4D77-AF64-6E22288FE4D0@OCOTILLOFIELD.NET>
Content-Type: text/plain; charset="US-ASCII"
Probably true - you'd still want a controller that would change the opening
as the temperature varied +/- from optimum temperature.
Tom
From: Vanagon Mailing List [mailto:vanagon@GERRY.VANAGON.COM] On Behalf Of
Mark L. Hineline
Sent: Monday, February 21, 2011 8:39 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: Substitute for aircooled thermostat
True, but that would be overkill. If the idea is just to just replace
the stock thermostat, oil temp from a sender is more than enough.
Mark
On Feb 21, 2011, at 6:26 PM, Tom Hargrave wrote:
> You'd want head temperature and oil temperature feedback to do it
> right. Oil temp for initial placement and head temperature to
> temporarily open further for more cooling.
>
>
> Tom
>
> From: Mark L. Hineline [mailto:hineline@OCOTILLOFIELD.NET]
> Sent: Monday, February 21, 2011 8:19 PM
> To: Tom Hargrave
> Cc: vanagon@GERRY.VANAGON.COM
> Subject: Re: Substitute for aircooled thermostat
>
> Agreed. And technically, it would be a step motor. Also, you could
> do away with the thermistor and just hook up to the oil temp sender.
> So the controller might be nothing more complicated than an oil
> temperature gauge that switches the step motor. That's the ugly way
> to do it. Maybe there's a cleaner way.
>
> Mark
>
>
> On Feb 21, 2011, at 5:57 PM, Tom Hargrave wrote:
>
>
> You'd need more than just a thermistor and a servo - you need some
> sort of controller in the middle that would monitor temperature and
> move the servo.
>
> Tom
>
> From: Vanagon Mailing List [mailto:vanagon@GERRY.VANAGON.COM] On
> Behalf Of Mark L. Hineline
> Sent: Monday, February 21, 2011 6:49 PM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Substitute for aircooled thermostat
>
> Seems like a thermistor and a servo could substitute for the NLA
> thermostat for aircooled engines. The servo could be mounted up on the
> flaps, in the cool part of the engine compartment, with only the
> thermistor down where it's hot.
>
> It shouldn't take too much thought to make sure that if it fails, it
> fails in the flaps open position. Or buzzes a warning!
>
> So, tell me why this wouldn't work.
>
> Mark
>
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