----- Original Message -----
Sent: Thursday, July
05, 2007 7:12 PM
Subject: [FlyRotary]
OMP flow rate
Does anyone know what the flow
rate is from the OMP?
Unfortunately, I don’t know
what year the pump is from. It is on my 20B which has a 12A front cover.
It is a 4-port, likely from a 13B, in which one port has been blocked and
the other three go one to each rotor housing.
The only data I have on hand is
what Richard measured some years ago, running the pump at 6000 rpm. This
could useful if I knew the ratio of pump speed to eccentric shaft speed.
Thanks,
Al
The OMP drive gear is the same
size as the distributor gear. So it runs half as fast as the E-shaft. In my
tests I referred to the E-shaft speed.
Thanks; Richard. I wasn’t sure
because what I have in my file ends with some open question about the speed:
> At 6000RPM crank speed and 48deg. control lever
opening angle, the flow rate is 498cc or .498Liter/hour.
> Opening the control lever to 90deg.resulted in a flow rate of
.688Liter/hour.
> The 90deg. position seems to be the maximum for the pump. A run with the
lever at 180deg. did not change the flow rate.
>
> Richard.
> Richard. Your oil flow rate seems very high. Fuel consumption off
30
> litres/hour at 6000 rpm and .5l of oil gives a ratio of 60 to one. Most of
> us run around 120 - 150 to one. Does the pump actually run at crank(e shaft)
> speed?
> Ian Beadle RV6A W. Australia
Good point Ian. I don't think it does.
Al