Rex B wrote:

That should be .789" OK, .7577" base diameter, so tooth height is .031"

OK, this doesn't qualify for a module gear. Module 1 or module 1.25 are
common and standardized and they both don't fit (OD wise). With 20° (the
standard), that is. Tooth height would be way off (should be about 2mm
or 2.5mm for Mod 1 / Mod 1.25).
There also exists a Module 1.125 (have never seen that) that would badly
match the OD (20.25mm compared to your 20.04mm).
If the manufacturer quit the 20°, there is no standard to select from
(AFAIK).

But there is a last chance. It is legal to play some tricks with
tooth-height.
If you take the time and mesh two of those gears together (may have
different #of teeth, but i need to know. And no tricks this time! :-))
and messure the distance of the centers, I'll give it another try.


Nick, gonna have a beer in the meantime ...
--
Motormodelle / Engine Models:
http://www.motor-manufaktur.de
Ellwe 2FB * VTM 87 * DLM-S3a * cubic
more to come ...