Mike:
i am very interested in your approach, electronic governors are quite expensive (sometimes nearly as much as what one can spend on
one of these engines when it is fully implimented) so other options are surely welcome.
while the electronic high dollar versions are accurate to within a gnats ass, we don't need that kind of accuracy in my opinion for these
singles and twins (i question the ability of even the high dollar versions to get the advertised accuracy on these engines as well)
in my opinion a governor that can hold plus or minus 1 hz (59 to 61hz) over the load range is more than adequate for the vast majority of
applications, anything tighter than that will likely add significantly to the cost of the unit, and you will reach a point of dimished returns quickly
in my opinion.
it sounds like you are working with an analog type of control rather than a digital design,, personally i think analog is more than adequate if done
right.
if i understand your design, this thing is made to augment the mechanical governor, or rather to bias it? or will it be such
that it will replace the governor and attach to the fuel rack directly?
if it replaces the mechanical governor, i assume there will be a failsafe to shutdown?
so that if it loses tach signal or power the rack closes?
if so will there be an override to provide for opening the rack for startup?
if it works as hoped and you can market it for 50 bucks,, you should have a steady income from the sales of the unit.
and i will buy one too!
(personally i think your pricing is too cheap)
good luck
bob g