03-16-2011, 11:27 AM
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Old Far...er...Rocketeer
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Join Date: Mar 2005
Location: Plano, TX resident since 1998.
Posts: 3,965
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Quote:
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Originally Posted by Bill
My rule of thumb is that 1 mph is about 1.5 fps, so 50 mph -> ~75 fps.
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That's mine, too. It's nearly exact. (60mph=88fps. So the true conversion factor is nearer 1.467.) 1.5 is close enough 90+ percent of the time.
Doug
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YORF member #11
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