Sounds like something I have seen at www.mpja.com  at some point.  If you
are going to operate the flaps via some sort of cable, you might use a
servo that would move a lever, and then convert that action to linear
motion via the cable.  I think you will have trouble finding a device that
will withstand the heat of the original thermostat location.

Edward  (also WNC)

At 07:55 PM 2/13/2006, you wrote:
>Hello to the inexhaustibly intelligent list,
>
>I am looking for a 12v linear actuator that is suitable for use as an air
>cooled thermostat replacement unit.  I have a solid design planned out but
>haven't been able to find a non-industrial strength and price linear
>actuator (I don't need to lift the top, or the whole van for that matter).
>Anyone know where I should be looking?  As you probably imagine I am looking
>for something reasonably small and also somewhat temp/weather resistant as
>it will be mounted in the engine compartment with my often very warm air
>cooled vanagon motor.  I am located in western North Carolina.
>
>Thanks,
>
>Jonathan Poole
>'82 ac westy