At the time this was the worlds only Subaru on an RV9A using a hydraulic constant speed prop. This prototype unit has all of the same features of the original Geared Drives PSRU including its own oil reservoir, oil pump and filtration system, drive port for hydraulic prop governor, and flywheel and centrifugal clutch assembly. This airplane with the P2 prototype Geared Drives PSRU can be seen at Sun n Fun Air Show, Lakeland, FL, April 21-26, 2009. Look for the Geared Drives booth N52 for directions the aircraft location.
Larry Ketterlings P-51 Engine
Geared Drives FWF engine package for P-51 at idle and run up very
conservatively since we were testing ignition only and there was no prop
installed. Note how smoothly the engine transitions from low RPM to higher
RPM. Nice rumbling sound through the short custom Exhaust, volume increased via the collector with
baffling within to provide back pressure and guard against shock cooling
Truyeart LS1 Engine for his RV-10 Starts for the first time!
Another Geared Drives LS1 engine package for RV-10 roars to life for the
very first time! The engine starts easily and runs at low RPM since it is
not good for it to run without the load of a propeller on it. We run it
long enough to test the systems, check for leaks, test the PSRU etc. At the
very end of the video you can see the breather on the PSRU kick over the
little bit of overage of oil as it seeks its natural level in the gearbox.
This is normal for a first run up.
Roger Followell's Geared Drives LS1 Engine for Legendary P-51
Bud Warren starts the Geared Drives the LS1 Chevrolet firewall forward
engine package with Geared Drives PSRU prior to delivery to its owner,
Roger Followell. I heard the engine start up so I grabbed my camera...this
was the very first start and it did start first time. We are running it
gently since there is no load on the engine.
Franks Bearhawk Engine Test Run
LS1 firewall forward engine package with Geared Drives spur gear PSRU built
for Frank's Bearhawk airframe. Test run after 5 minutes at idle produced
145 degrees, 15 minutes 150 degrees, 20 minutes 160 degrees. When brought
up to 2000 RPM the engine cooled back down to 155 degrees! We have the
right cooling combination and we can make auto engines run as cool as you
would like in this configuration.
Geared Drives 200Z PSRU for Subaru
Test running the Geared Drives PSRU for Subaru on our test engine mule,
Frankenstein. Running for eight hours this day, the oil temperature is
cool enough you can wrap your hand around the oil filter and it is barely
over body temperature. Swinging a 72" Hartzell two blade hydraulic prop at
full pitch, the gearbox is performing perfectly and ready to take its place
as a retrofit to Eggenfellners gearbox. Torsional harmonics are resolved
via the Geared Drives centrifugal clutch system.
E6 Egg Subaru engine propeller trim balance N707SM
Michael OBrien doing a full power run on his Eggenfellner E6 engine at KDWA
for propeller trim balancing prior to 1st flight... Subaru based 6 cylinder
engine is turning a Quinti/Sensenich 4 blade hollow composite c/speed
This sube engine runs so smooth its unreal!
Glasair 1RG Fly By 260 MPH - Subaru EG33 Motor
Father-In-Law's first flight in a Glasair aircraft powered by a Subaru
Alcyone SVX EG33 six cylinder 202 cubic inch engine. He had never before
experienced any "G Loads" and handled them well. Watch us make a high speed
Eggenfellner Subaru First Start
First start of my Eggenfellner Subaru E-6 engine. This is a converted
automobile engine for aircraft use and is capable of producing 200 hp.
Instead of burning just expensive aviation fuel, I will be able to use the
cheaper 92 Octane auto fuel, or as necessary, aviation gas. Repairs and
maintenance of this engine will also be cheaper then a typical aircraft
engine. Being water cooled, it will have far less vibration and will be
quieter then the typical air cooled aircraft engine. It will eventually be
attached to my RV-8A that I am currently building.