On 19 Nov 2003 08:02:58 -0800, (Rick Durden)
wrote:

snip

Where in the world have you found an R-680 powered Twin Beech? That
has got to be an incredibly rare beast. I thought only one or two of
the very first ones had other than Pratt and Whiskey R-985s. The
early ones were much lighter, but, still, the performance had to be
marginal at best.

Have you ben able to get your hands on a manual for the R-680 powered
model? Given that it would have been written in the 1930s when most
manuals were pretty basic, I'd be curious what it reported about
performance. Does the airplane even have feathering props? What is
the serial number of this airplane?

snip

My initial thoughts are that Beech made a twin trainer similar to the
Bamboo Bomber that was powered by 300 hp R680's.

There are quite a few Stearmans flying around with 300 hp 680's that
are an STC'd install using the modified engine mount, dishpan, etc.
from the the Beech twin trainer.

http://www.wpafb.af.mil/museum/early_years/ey23.htm

TC