wildcoyote34, R- 985 sounds super. Watch video Matt younkin flying the beech-18. 985 puts out more than 450 hp. More like 550 h.p. He takes a lot of stupid chances doing inside loops 300 ft. Off the ground. To me that isn't good airmanship. He pops an engine at that altitude. He is a sure goner. I'M not a pilot. But, I do know I don't trust any engine at that height. 985's sounds like a giant Mccollough stroke.

p930turbo Vielen Dank für die Blumen. Gebe es an die anderen Beteiligten weiter....-

Yes, that's correct. You can overheat a radial engine with full prop, if it is only running on idle. Radials are cooled by ram-air during flight. The propeller cone doesn't only have aerodynamic function. During flight this cone will accelerate airflow and lead it through the gap between cone and engine cowling cooling cylinders and cylinder heads. The mass of airflow you can dose with the cowl flaps. The second reason, running engine with a club prop is load and flywheel effect. The frequencies of vibrations aren't "healthful" for several engine parts. Club props often have high pitch.

Now it has one ...👍✌️...!

Please, firstly, master the use of the CAPS LOCK key before commenting.

Godfrey Poon well Godfrey you reed it just fine

Luddites, and people who wanted to see this in a Skyraider.

MUSIC TO MY EARS!

flewnvy Yes, engine is a Curtiss Wright R-3350 32WA from Lockheed P2-V7.

Since it has total loss oil injection what oil does it burn?

Bruce Miller Engine didn't run for a while and so it happened, that a small amount of oil accumulated in the bottom cylinders and manifolds. Before starting the engine, you are not able, draining this oil completely and after ignition, it burns out to this wonderful white clouds....😎😎

Verdammte Luftverschmutzung!

The Neptune P2V7 flow up to 1984 in the french "Marine Nationale" (Flottille 25F), last in FAAA base (Tahiti), one of them is maintained airworthy by a Australian association

Yeah... what he said.

You could run it for 20 mins and not even get close to high CHTs.

@soaringtractor 😂

Klimmek Der läuft doch auf Bioethanol und Rizinusöl....😎😎😎😎😷😷

49827ij Yes, the first minutes, engine is burning a small amount of oil from bottom cylinders and manifolds.

If we start cold engine, it needs 5 liters until it will run smoothly. After pushing mixture lever to "rich"-position, switching off primer, it will need 1 liter per minute (1200 revs)

Thanks! High-octane leaded gasoline? I see two levers at the dash, one of them is obviously the throttle, the other one is mixture control?

No, we use MoGas, Shell V-Power-100, because we don't ask power. Yes, the two levers are mixture and throttle.

turbocompound 5 liters of fuel that’s not that much ...

Jeffrey Kumjian Don't worry, now it has one......

Not running it for extended periods of time, I'm guessing.

These beasts were cold-blooded and could run for some minutes before ceasing up. They just had to carefully monitor the engine oil pressure, cylinder head temp etc.

So you're thinking the propeller cools the engine? LOL he didn't have it running long enough to overheat it. They rely on the motion of the air flying to cool the engines. They are air cooled engines but you got to be moving through the air. I don't think they're particularly cold-blooded. My dad put me in a AD Skyraider when I was 5 which has the bigger engine than this in it and started it up and it only took two or three revs to fire it and he kept it running just fine. The difference is; A. he was a farmer's son who'd been learning the art of throttle and manual chokes from the time he was a child and , B; he started one up almost every day For months at a time. I've seen people that rebuild corsair's and hellcats and they go to start them up and they struggle because they've never started one up before. It's like anything else you get better at it with practice. I'm going to say here to that I think this has a problem in that there running it without the propeller. A flywheel is a necessary component especially when it's cold. The big prop connected to these engines was the flywheel. It functioned as the flywheel. It'll be interesting to see if these engines have an actual flywheel but I'm sure they were designed with spinning weight in mind. So once it starts to pop and fire up the prop keeps at spinning if it coughs. The momentum of the prop keeps spinning the engine as the cylinder heads clear. I'm serious about that putting me in 1 at age 5 in starting one up. The 86 is what he was flying but the AD's were huge I'm had several different cockpit configurations. We were on base for some kind of inspection. I remember he was in his dress whites. And there was a sky Trader with a side by side as he walk me down the flight line. Want to go for a ride he says? Miramar Naval Air Station 1955. The patch on his flight jacket is the "Angeli Inferni" patch of the Hell's Angles squadron, VA 54.

Jeffrey Kumjian YOU DONT. IT WILL OVERHEAT WITHOUT A PROP.

Hi Bill, we will mount a prop next week on Easter Monday. A friend of mine will bring it from Netherland.

+turbocompound looks great but 'HOT'

No, it won't overheat, I'm pretty sure they were gauging the cylinder head temp and shut it down before it got too hot..

KinkyKinga1 Engine is not turbo charged. It has an engine driven supercharger with low-blower and high-blower setting. Impeller has a diameter of 13.5 in.. Additional parts are three power recovery turbines. Each turbine is supplied exhaus gases from six cylinders, three front and three rear. The turbines are geared to the crankshaft with help of fluid couplings. They utilize the velocity energy of exhaust gases, which is normally wasted. With help of each turbine, you can feed back nearly 150 hp to the crankshaft. That makes 450 hp additional horsepower.

The engine IS turbo charged. The 3 turbos not only drive induction compressors but also return power back to the drive shaft via the exhaust turbine drive shafts. These are not engine driven superchargers.

They are called "power recovery" turbines.

P38 Lightning was turbocharged. P47 Thunderbolt was turbocharged. B17's and B24's were turbocharged. British Typhoons and Tempests were turbocharged. All well before the turbocompound engines

Typhoons and Tempests were not turbocharged. The British fielded no UK-made turbocharged aircraft during the Second World War, unlike the US.

Just For Fun Engine oil pools in the lower pistons when not in use. It begins to burn off as smoke when started. This engine probably sat for a long period.

Because they do. The bottom (upside down) cylinders are prone to accumulate oil when the oil seeps past the rings.

Der meiste Rauch kommt deshalb wohl auch von den Kopfdichtungen