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Subject:Re: Substitute for aircooled thermostat
From:Mark L. Hineline
Date:Mon, 21 Feb 2011 18:38:44 -0800

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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