Paul:  I asked a question of starting torque required for a rotary a
couple of days ago.  Perhaps the question is answered somewhere on you
web pages, I haven't seen it.  But the real reason for my question is
that I am trying to figure out how some weight can be saved on a simple
two-rotor installation.  I am not interested in building a hot-rod; 150
to 175 HP would be plenty. So the smaller the starter, the smaller the
battery, the better I would like it.

Does anyone have FWF rotary power weights broken down? Perhaps something
like this:

Engine block (dry) 190
oil cooler
starter  7 pounds
radiator & coolant  one gallon 8 pounds
exhaust
PSRU = 40
shrouds/ducts  2 pounds carbon fiber
oil(s)  7.5 lbs per gallon. 5 to 6 quarts
mount  as little as 10 pounds if designed right

Total FWF =

If you think this question cannot be answer accurately, just ignore my
wander thoughts here

Robin B



I have no idea of the torque required. You need an amp meter of
about 300 amps to measure the current going into the starter.
Then you will need the gear ratio of the starter and then measure
the voltage and engine RPM as it is turning over. From that data one
can probably derive the approximate torque required.

Generally all the stuff adds up to about 100 pounds.

Paul Lamar