Douglas skyraider

Hydrolock is common on aircraft radial engines on the lower cylinders when the engine sits for a long period. Most often, engine oil drains down through the push rod shroud tubes, fills up the rocker covers, and then seeps up through the valve guides in to the intake and exhaust ports. If enough oil seeps through, the cylinder can fill with enough oil to cause hydraulic lock. This is also the cause of the clouds of blue-white smoke commonly seen when a radial engine starts up. In order to prevent engine damage, it is universal practice for the ground crew or pilot to check for hydraulic lock during pre-flight inspection of the aircraft. They do this by turning the engine by hand several rotations to make sure it turns freelyydrolock (short for either hydraulic lock or hydrostatic lock) is a condition of an internal combustion engine in which an incompressible liquid has been introduced into its cylinder(s), resulting in the immobilization of the engine's pistons. The liquid causing this malfunction is often water, hence the prefix "hydro-". Internal combustion engines must compress air to work efficently and this works because gases can be compressed. Liquids do not compress so if a volume of liquid greater than the volume of the combustion chamber at its minimum (top of the piston's stroke) enters the combustion chamber then the piston cannot complete its travel. Either the engine must stop rotating or something must give. The result is often a bent connecting rod or sometimes a cracked cylinder head or block. Rate comment

Category:

Autos & Vehicles

Tags:

• a-1H
• sky
• raider
• engine
• damage
• Douglas
• crack
• piston
• rod
• connecting
• hydro
• lock
• Wright
• R-3350
• Cyclone
• 18
• cylinder

[AgentJayZ]

Video so-so, but the info section is excellent!

[2008FORDF450V8]

@AgentJayZ what could i have done better that would make it right

[AgentJayZ]

@2008FORDF450V8 Jeez! I forgot I commented on this. I don't know how much zoom you're using, but it's just a bit shakey. Being an airshow, you probably couldn't get very close to the planes on the flightline, so using zoom and getting some shakes is unavoidable without a heavy tripod..

[RodryV8]

He has Parkinson. =P