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jugent
08-25-2004, 03:28 PM
I scrutinized a RollsRoyce engine at Duxford and found a funny detail.
The camshaft is driven by a cog-wheel. To the left and right of the camshaft are axle? also driven by cogwheels (sorry for the incorrect technical words)The "axles" got that the device that brings the movement from the camshaft to the valves, attached to it (camshaft lifter?).
Why does the axle rotate with the same speed as the camshaft? Its only a pivot for the camshaft lifters. Is it because of the lubrication or to bring the wear to the whole axle?

jugent
08-25-2004, 03:28 PM
I scrutinized a RollsRoyce engine at Duxford and found a funny detail.
The camshaft is driven by a cog-wheel. To the left and right of the camshaft are axle? also driven by cogwheels (sorry for the incorrect technical words)The "axles" got that the device that brings the movement from the camshaft to the valves, attached to it (camshaft lifter?).
Why does the axle rotate with the same speed as the camshaft? Its only a pivot for the camshaft lifters. Is it because of the lubrication or to bring the wear to the whole axle?

IL2-chuter
08-25-2004, 06:52 PM
Not sure about the lube part, though that might very well be the case, but the wear issue seems obvious. One wouldn't want the rockers to start sticking (wouldn't take much) and then have the lobes slapping the rockers/valves . . . valve train failure ensues (been there). http://ubbxforums.ubi.com/images/smiley/16x16_smiley-indifferent.gif

When you get through with that research, you will set yourself up for the rest of your life researching the Napier Sabre and Rolls equivelant (forgot name). Good luck! http://ubbxforums.ubi.com/images/smiley/16x16_smiley-happy.gif

"I fly only Full Real in Il2 Forgotten Battles." -Mark Donohue