"Stuart & Kathryn Fields" wrote in message
.. .
I've got to admit that idea has never been put forth, but I'm playing with
a helicopter and increasing weight is looked at very closely. My
accumulator that I built weighs 2.9# but the electric fuel pumps that I
have been reviewing weigh less than 2#.

Electric oil pump
http://www.enginegearonline.com/3gpmgepumowi.html

These folks have electric pumps,and switches that turn it off when the
engine oil pump catches up. Also will provide for oil flow if your engine
oil pump dies in flight.
http://www.infinityaerospace.com/

More can be found search with "engine pre-oiler pump."
--
Jim in NC