Geared Drives 200Z PSRU For Subaru

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.

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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.





Subaru SVX powered Velocity - new improved ECU - runs nice N smooth......
First run on the Subaru SVX engine with new Tracy Crook ECU- runs like a top- still need to do the tuning- will post again for taxi test





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.





geareddrives psru installed on RV7 subaru ez30 h6 engine
the front end of a subura ez30 H6 with a geareddrives 200z psru driving a full hyd constant speed whirlwind 151 prop super smooth




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