SPEED FUNCTIONS
5
AVERAGE SPEED (AV).
Average speeds of up to 199.99 mph or
km/h are displayed with 0.01 mph resolution. Reset individually by press-
ing both buttons when average speed is displayed. Usually you will want to
know average speed for an entire ride. For training, you may want to reset
often to reset the Riding Time/Riding Distance function or to check perfor-
mance on specific sections of a ride.
With 0.01 resolution you will immediately see the results of speed varia-
tions on your average. If you measure your performance by average speed
on a course you regularly ride, the Cyclometer 45tt will show your progress
precisely. To make riding on wind trainers and rollers more interesting and
effective, you can design increasing-tempo and steady-tempo workouts.
PaceArrow™.
The PaceArrow, displayed in all functions when the bi-
cycle is moving, indicates whether current speed is above or below aver-
age speed. For training, the PaceArrow is most effective on a rolling route.
To keep the arrow pointing up, you will have to work hard on the uphills,
then use the downhills for recovery. You can adjust the difficulty of the
workout by resetting Average Speed more or less often. The PaceArrow
and Average Speed make unforgiving taskmasters for those who like hard
training.
Auto Start/Stop.
The Cyclometer 45tt displays true average speed. It only
averages when the bicycle is moving. Its ride timer calculates average speed
independent of the stopwatch timer. Time stopped at traffic lights or rest
stops on long rides such as centuries will not reduce your average speed.
SPEED FUNCTIONS
6
CADENCE (RPM).
O
PTIONAL
: R
EQUIRES
CADENCE
MOUNT
KIT
.
Cadence,
the rate of pedaling, is displayed from 15 to 250 crank rpm. Cadences
below 15 rpm display as 0. When you start pedaling, no cadence will be
displayed for 4 seconds, and when you stop pedaling, a rate will remain
for 4 seconds.
Most coaches recommend that cyclists learn to ride smoothly while ‘spin-
ning.’ Although cadence varies with speed, terrain, and riding style, many
riders tend to let cadence fall when they are inattentive. Checking ca-
dence will prompt you to keep your pedaling steady.
GEAR-INCH.
O
PTIONAL
: R
EQUIRES
CADENCE
MOUNT
KIT
.
To reach Gear-Inch,
hold down the left button when Cadence is displayed. Gear-Inch is the
traditional American and British system for representing gear size. It equals
the number of teeth on the chainwheel divided by the number of teeth
on the freewheel cog multiplied by the diameter of the tire. Gear-Inch
will tell you if one chainwheel-cog combination produces a gear larger,
smaller, or equal to another. You can see whether you have duplicate
gears, and you can establish a logical shifting sequence.
When you enter the Gear-Inch function, or change gears, the upper dis-
play shows 5 dashes. In 4-6 seconds the whole gear number shows with a
dash after the decimal point. 10 to 12 pedal strokes later, data will be
available to show the complete gear-inch number in tenths. Coasting,
even brief lapses in pedaling, resets Gear-Inch.
N
OTE
: T
HE
G
EAR
-I
NCH
FUNC
-
TION
WILL
NOT
OPERATE
AND
WILL
DISPLAY
‘
ERROR
’
WHEN
D
ESTINATION
D
ISTANCE
IS
COUNT
-
ING
DOWN
.
V
mi
AV
V
mi
AV
V
mi
PM
P
mi
PM
P
mi
PM
P
L
