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Registered
Join Date: Nov 2001
Location: Guildford, UK
Posts: 278
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360 or 720 degrees?
Hi
While doing my valve adj this past weekend and turning the motor around and around, it ocurred to me that I hav'nt a clue about the following. Is a 1000 revs per minute equal to 1000 360 degree rotations of the crankshaft or Is a 1000 revs per minute equal to 1000 720 degree rotations of crankshaft i.e. is one rev calculated each time cylinder one fires or each time cylinder one reaches the top. Sorry if this does not make sense, its been a long day Cheers Jakes
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If you want to run with the big dogs, you can't pee like a puppy!!! 92 Rover Metro 1.1 (54 manly horsepower) - Dont knock it it does 60 mpg!!! 81sc / 3.2 litre transplant (Broken BIG Time ) SCWDP deserter - HP junkie wannabe |
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10-08-2002, 07:13 AM
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Senior Member
Join Date: Feb 2000
Location: Lacey, WA. USA
Posts: 25,310
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A revolution is a revolution. A complete engine cycle takes two revolutions.
Ah, and by the way (here's the fun part), 1200 rpm is twenty revolutions a second. 6000 rpm is one hundred revolutions a second. Let me repeat that. One hundred revolutions per second. I have bolted engines together, but I still don't really believe that they can stay together under these forces. I mean, they do stay together, but I wouldn't believe it if I hadn't seen it myself. I still think that magical forces are the only way to explain this. 
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Man of Carbon Fiber (stronger than steel) Mocha 1978 911SC. "Coco" Last edited by Superman; 10-08-2002 at 07:18 AM.. |
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10-08-2002, 07:15 AM
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Registered
Join Date: Nov 2001
Location: Guildford, UK
Posts: 278
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Holy Shmoly,
Thanks.. I am never revving past 1200 again  , I never thought of thatI just worked it out again on a calculator, its unbelievable Amazed from Guildford
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If you want to run with the big dogs, you can't pee like a puppy!!! 92 Rover Metro 1.1 (54 manly horsepower) - Dont knock it it does 60 mpg!!! 81sc / 3.2 litre transplant (Broken BIG Time ) SCWDP deserter - HP junkie wannabe |
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10-08-2002, 07:26 AM
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Registered
Join Date: Jul 2002
Location: Just East of Atlanta
Posts: 2,074
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and a top fuel dragster engine in 1 (4.30 sec) pass (without burnout) only turns over 534 times in 1/4 mile...or something like that.
and it uses 1 fl oz of fuel per cylinder, per firing, each firing, for the whole 13 gallons down the 1/4. these numbers are approximate, I'd have to redo the math to get the actuals... sjd |
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10-08-2002, 07:34 AM
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Registered
Join Date: Nov 2001
Location: Guildford, UK
Posts: 278
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Suddenly I don't feel so bad about my fuel consumption
 Jakes
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If you want to run with the big dogs, you can't pee like a puppy!!! 92 Rover Metro 1.1 (54 manly horsepower) - Dont knock it it does 60 mpg!!! 81sc / 3.2 litre transplant (Broken BIG Time ) SCWDP deserter - HP junkie wannabe |
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10-08-2002, 07:45 AM
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