CROSBY RESEARCHINSTITUTE
I70 NORTHROEERTSON
. EEVERLY
BOULEYAR,D
HILLS.CALIF.go2II
September 27, 1973
Mr. Larry Crosby
170 North Robertson BIvd.
Beverl! Hills,
California
Sub j ect:
EIIA motor
90211
tests.
Dear Larry i
;
The following
is a sunmary of p:ertinent
d,ata accumulated
during extensive
testing
or tha EMA motor by pan world
Enterprises
co., Ltd. r and EvGray engineers between May I and
May 10 ' 1973.
Conf irmation
of input vs. output po!{er ef f iciency was^Tadg by the undersigned
andlEvGray engineers on
September 25 , 1973.
The measured overall
system efficiency
exceeds ggt, .utilizing
the. EvGray proprietary
methods whereb| additional
electrostrictive
power is developed r ds well as the electro-chemical
battery
energy is recycled
during the system operation.
No
external
recharging
generator wai utilized
durLng these tests.
The EMA motor was operated into a 10 H.p. (48 ft.
lb.) dynamometer load at 1' 100 R. P.M. This povrer output is
7 ,460 ilatts.
The total
battery
power available
from the four batteries
was
51454 watts for one hour.
The total
battery
power consumed by
the motor during
a 2L minute run was onry g'.7-s ,.tt";
this
eguals 26.9 watls per hour.
The system *i11-operate
continuously
for zo3 hours or g.5 days,
at 10 H.P. and 11100 R.P.M.1 with tlre four batteries,
without
rechargfe.
Recyclilg
of the batteries
during
ttotrloperational
period's would permil
continuous
system operition
until
the end
of the battery
life.
Battery
life
tl_t9tt operated on the high energy pu1se, electrochemical recycllng
mode has not been determined.
A conservative estimate
of 2' to 3 year battery
life
seems reasonable.
The EMA system
will
alter
supporttng
the
future
concepts
the above information
of
is
energy
use.
available
. A. Maize
Director of rlngineering