Jim's idea is a good one. I have a PWM controller in my Syncro using a
manual potentiometer. An inexpensive fix (about $12 as I recall).
Unfortunately I can't get you any readings as I'm too busy, not at home,
and have no engine in my Syncro!

Easy to replicate though, and a good way to collect the data needed. For
those of us who are programming challenged it's easier to simply become the
arduino...

Angus

On Tue, Nov 19, 2013 at 2:32 PM, Jim Akiba <syncrolist@bostig.com> wrote:

> You can measure the correct duty cycle for your setup. Get your PWM
> controller working manually (preferably with a dashpot input and
> output so you can read where you are) get the engine warmed up
> normally then interrupt it and see where "middle" is for the desired
> idle via your manual control when warm. You can then begin to work
> backwards and get the colder temps etc, unless you just watch/log the
> current outputs.
>
>
>