TESTING SPEED ACCURACY OF YOUR TREADMILL:
The most accurate way to test the belt speed is to use a digital rotary
meter. This will translate the number of times the disc rotates and tell
you within thousandths of a MPH. Since these cost about $450 US
here's another easy way to do it....count the times the belt travels
around in 1 minute.
On a Weslo Cadence 850 treadmill, a 104" belt is standard equipment.
Due to this, the belt should travel appx. 25.5 times around in one
minute. For every belt lap that the count is higher or lower, the speed
is off appx. .1MPH. Find a bright colored piece of tape and mark the
belt, get the treadmill up to the speed of 2.5 MPH and start counting,
using your timer to determine the minute.
Here's the math...Multiply the feet in a mile by the desired testing
speed, then multiply the number of inches in a foot. Divide this
number by the number of minutes in an hour, then divide this number
by the length of the belt.
Definition of numbers in equation below: In the equation 5280 is the
number of feet in a mile. 2.5 is the testing speed. 12 is the number
of inches in a foot. 60 is the number of minutes in an hour. 104 is the
length of this equation’s test belt in inches.
Equation 5280 x 2.5= 13,200 x 12= 158,400 / 60= 2,640 / 104= 25.38
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