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if an engine runs full speed at 1700rpm and is in Top Gear which is a one to one ratio, then throo at differential ratio of 5.75;1 the outer circumference of the tyres are 131'' what speed would i be doing please. i also have wheels 0f 128'' if you could kindly help me out many thanks
Wiki User
∙ 14y ago
Wiki User
∙ 12y agoYou can't convert rpm to mph because they measure different things.
Rpm (revolutions per minutes) measure how fast an object (such as a crankshaft) spins. ph measures distance traveled in miles per hour.
If you were talking about distance traveled by the crankshaft itself, the object as a whold might not be going anywhere, although any point on the crankshaft goes around and around. But a point near the axis or center line of the shaft travels less that a point far from the axis.
If you are talking about mph that a car is traveling related to the spinning of the crankshaft, it depends on what gear the car is in.
Wiki User
∙ 12y ago1400 RPM is 1400 revolutions per minute, or about 23.33 revolutions per second, or about 0.04286 seconds per revolution.
Anonymous
100 mph
Anonymous
25 mph
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