I found this in LASORS 2006
Differences & Familiarisation Training on
SEP Aeroplanes for Holders of a MEP Class
Rating or Single-Pilot Type Rating (Piston
Types only)
Many pilots with a MEP class or type rating may only
have had experience on SEP aeroplanes with Fixed
pitch propellers. Where a Constant Speed Unit (CSU)
is fitted to a ‘single’, some of the MEP training will be of
value, but comparison should be made of the effect of
the propeller, on performance and handling between
types and variants within the SEP class.
The handling of a non-feathering VP propeller, on a
SEP aeroplane, during an emergency, may also be
quite different from the technique used in a single pilot
ME aeroplane. For example, not all VP propellers in
SEP aeroplanes have counterweights in the hub, so the
failsafe propeller pitch may be either fine or course, and
the effect on glide performance, may vary considerably
from type to type.
Where Differences Training on a particular feature has
been completed within the MEP class, these
differences may be covered, for SEP aeroplanes, by
Familiarisation. It is recommended, however, that some
flying training be carried out on the SE type, to
demonstrate these differences.