Marc Wiese wrote:

Bruce,

No, I don't have that much familiarity with those sorts of motors, but I will forward your message
to a couple of lists where there is a lot of varied expertise, and I am sure someone will respond.
I seem to remember that Volkswagen used a temp controlled vac assist device to control heater
doors.......

You aren't making cowl flap motors are you? The C337 crowd really needs a "certified" replacement
motor that costs less than $500!!!!!

Stepper motors might work for a turbo wastegate control as well, but they must be FAST acting.

Guys, please reply to Bruce via his email below........

Marc Wiese

Hey Marc,

I am keeping up with your wingtip progress through yours posts on the digest and your website. By
any chance do you have any expertise in stepper motors or servomotors?  I'm working on what I
think is a real hot aviation product and need some design and prototyping help.  Thanks.

Hope you're enjoying Dallas.

Bruce Allen

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