• The reason why we are running the engine slowly and not rapping it out is because it has no load of a propeller on it and it is not good for the engine to run at high RPM without a load to pull. We are only running it so be sure that there are no leaks, loose connections, or anything else prior to delivery.

    Larry Ketterlings P-51 Engine - Duration: 2:26.

    • 4 years ago
    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...
  • That was awesome Frank! LS1 power is the best!

    Congratulations-the gang at Geared Drives

    Bearhawk N8861B My 1st flight - Duration: 0:35.

    • 4 years ago
    Recorded on March 9, 2011 using a Flip Video camera.
  • Truyeart LS1 Engine for his RV-10 Starts for the first time! - Duration: 6:48.

    • 4 years ago
    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 prop...
  • Roger Followell's Geared Drives LS1 Engine for Legendary P-51 - Duration: 2:35.

    • 4 years ago
    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 grab...
  • We are averaging under 13 gph in a Ravin 500 3575 gross airplane, and we expect better from the Bearhawk.

    Franks Bearhawk Engine Test Run - Duration: 2:07.

    • 4 years ago
    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...
  • @probuiltlakecity Two spark plugs are neede in aircraft engines since they lead foul so badly. Bottom plugs face upward and collect the lead. Auto engine plugs face downward and do not collect lead, and RARELY do they foul. Even so, if one did, there are seven other cylinders and plugs and the computer will smooth out the engine and you can still fly it to the ground for service.

    Gipson's RV-10 with Geared Drives LS1 Engine Runup - Duration: 9:15.

    • 6 years ago
    Bill Gipson of Conroe, TX runs his RV-10 with the Geared Drives PSRU and LS1 Firewall Forward Package built by Bud Warren. Notice that the engine runs great at any RPM. We are expecting fuel burn r...
  • Geared Drives 200Z PSRU for Subaru - Duration: 0:31.

    • 5 years ago
    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 fil...
  • Machining Geared Drives PSRU Billet Alum Cases - Duration: 0:50.

    • 5 years ago
    Cases start as a 100# chunk of aircraft aluminum and as the computer controlled CNC machine begins to carve out the rear case of our PSRU (gearbox) for our high HP units. First the inside of the ba...
  • Machining CNC Aluminum Cases - Duration: 0:59.

    • 5 years ago
    New cases of billet aluminum for Geared Drives PSRU are lighter, stronger, and place the Geared Drives PSRU at the very top of the industry in functionality, durability and beauty! Watch as this v...
  • Geared Drives LSJ Run Up for Tango Two - Duration: 2:56.

    • 5 years ago
    Chevrolet LSJ 2.0L Ecotech supercharged 4 cylinder, designed and being tested for Florida's Team Tango-Tango Two airframe. This engine is currently being ground tested for use in experimental airc...
  • Cooled by air and water, the radiator is located parallel with the firewall behind the engine.

    RV 10 Run up with Geared Drives FWF engine package - Duration: 5:00.

    • 6 years ago
    Note: battery was a little low...Bill Gipson of Conroe, TX runs his engine up, cycles the prop, and shuts it down for viewers. This was immediately after taxiing around the airport and filling up w...
  • A throttle lets you use only what you need of the available power. This engine makes more torque at 55% power than a Lyc makes at 100% power and uses a lot less fuel.

    Geared Drives LS1 FWF for RV-10 at Oshkosh - Duration: 3:46.

    • 6 years ago
    Geared Drives PSRU and Chevy Corvette LS1 firewall forward package for RV-10 running up for the folks at Oshkosh. LS1 makes it powerful and the Geared Drives PSRU makes it smooth and multiplies tor...
  • It is a Subaru auto engine. This is an experimental aircraft with a Subaru conversion and uses a Geared Drives PSRU to convert enine RPM to the proper RPM's to the propeller.

    Geared Drives 200Z PSRU For Subaru - Duration: 2:22.

    • 6 years ago
    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 o...
  • Wow. Myself and my gentleman friend have just starte on our RANS S-19 and watching your video adds to my excitement and enthusiasm! Congratulations, you are a member of one of the most elite groups of people in the world...those who have built and flown an aircraft of their own. Thanks for being an inspiration.

    RV-10 First Flight - Duration: 6:54.

    • 8 years ago
    Builder and Pilot Randy DeBauw
    May 20th, 2005
    Aurora Airport, KUAO
  • Geared Drives PSRU for Subaru Prototype Test Run - Duration: 1:05.

    • 6 years ago
    By popular demand, Bud Warren of Geared Drives has developed a new spur gear and centrifugal clutch PSRU for Subaru! This double reduction redrive, accomodating reduction ratios up to 3:1, is excee...
  • By the way, it includes the flywheel and clutch assembly. NO extras to buy. Bud

    Geared Drives-starting a Chevrolet Powered Airplane from Sun n Fun - Duration: 1:03.

    • 7 years ago
    Demonstration of how easy it is to start a Chevy powered airplane-centrifugal clutch does not engage prop fully until you rev the engine up enough to taxi so no danger of it going anywhere. (Tinted...
  • We held 6000 FPM until we had to stop or bust class B airspace...do you know of any piston aircraft 3200# airplanes that can do that?

    Geared Drives Climb Airplane Climbout From Cruise 6000 FPM - Duration: 0:17.

    • 8 years ago
    Can your airplane climb at 6000 FPM? This is a clip of a flight and climb taken Jan 1, 2007, of our Wheeler Express with Bud Warren's Geared Drives PSRU and 405 HP Chevrolet 383 V-8. We carried 3 a...
  • is that a Vesta V8?

    RV-10 with Chevy engine run-up - Duration: 3:12.

    • 6 years ago
    First time running engine with new prop and psru
  • the wright bros did not have three white hot flaming balls of

    fire called turbos on their airplane engine.

    Homebuilt airplane with Subaru motor + 3 turbos for high altitude flying - Duration: 1:05.

    • 8 years ago
    Subaru ej22 car motor with 3 turbo chargers and a burn box. Petrol goes by hot exhaust to vaporize it - the burn box air is direct from one turbo unit. When you turn on petrol in the chamber and i...
  • Geared Drives Chevrolet Powered Airplane! - Duration: 0:15.

    • 8 years ago
    Low Fly-by at CXO in Conroe, TX. This is our Wheeler Express, experimental aircraft with 405 HP Chevrolet V8 and Geared Drives PSRU-no belts or chains! Sounds great, huh? More information available...
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