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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