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WHEEL SIZE CALCULATION

If the wheel size of your bike is not listed in the chart, follow these simple steps to calculate the wheel 
circumference number for your bike.

STEP 1

Measure the distance from the center of the front axle to the ground in millimeters. If you are measuring
in inches, simply multiply the number of inches by 25.4 to get millimeters. If you want total accuracy, make
this measurement while you are sitting on the bike.

STEP 2

Multiply the above number by 6.2832 (2

π

). The result is your wheel circumference calculated in millimeters.

STEP 3

Enter this resulting number into the computer (see next instructions).

PRESET VALUE

The V-50 has a factory preset wheel size value of 2155 (700 x 32c).

Summary of Contents for V50

Page 1: ...TER OWNER S MANUAL ENGLISH ...

Page 2: ... 50 cycle computer The V 50 is designed with the ether you are a road cyclist offroad cyclist or a triathlete The Vetta ming and operation The digital clock and average speed readings r that make it ideal for training and measuring performance ...

Page 3: ...til you perform an all clear total reset the ged or the unit passes 9999 9 mi or km ER DST istance for your current ride from 0 to 999 99 mi or km Automati er 999 99 mi or km Trip odometer will commence automatically cle wheel rotates To reset the trip odometer to zero at the end of your SET and MODE buttons simultaneously ...

Page 4: ...00 Average Speed will show an istance DST will continue to accumulate To clear the elapsed SET and MODE buttons while in the elapsed time mode ED AVS peed is calculated using your true ride time and trip distance The that will be displayed is 0 1 Km hr or Mi hr HOUR CLOCK me of day in a 12 or 24 hour format To display the clock press the for one second To change between the 12 and 24 hour clock pr...

Page 5: ...m the wheel lay modes at 3 second intervals To activate this feature press the mode To deactivate the Auto Scan mode press either the SET or mation press the SET and MODE buttons for 10 seconds The de with the flashing Km hr symbol displayed The unit is now ready computer unless you need to reprogram the unit ...

Page 6: ...aving your computer s operation check and replace the battery first attery cover from the bottom of the computer by turning the nterclockwise with a coin ry into the battery compartment with the positive side of the the compartment door Be careful when you are installing the end any of the battery contacts ry cap firmly into place Make sure that the rubber o ring seal does d or distorted in this o...

Page 7: ...etta recommends that this ed bicycle retailer Failure to read these instructions and improper e warranty If you are in doubt about any aspect of the installation your local bicycle retailer for clarification ON UPPER LEFT tton confirms resets or clears numbers TON LOWER LEFT button starts stops or moves in a loop sequence from one nother ...

Page 8: ... to switch between miles and kilometers ection has been made press the SET button to confirm your move to the wheel circumference selection mode MPUTER HEAD ures of your Vetta V 50 cycle computer you are ready to begin ur bike Take a few minutes to familiarize yourself with the buttons o program the unit ...

Page 9: ...limeters Note ammed to 1mm for total accuracy discrepancies of as much as nt effect on the accuracy of the unit for most normal rides ng sizes for many of the most popular wheel sizes currently in use y vary slightly from the size of your actual wheel depending on the ing ...

Page 10: ...heel the front axle to the ground in millimeters If you are measuring inches by 25 4 to get millimeters If you want total accuracy make on the bike The result is your wheel circumference calculated in millimeters mputer see next instructions value of 2155 700 x 32c ...

Page 11: ...g Use the MODE button to advance this digit 5 6 7 8 er you want appears and is flashing ect number appears press the SET button to select that number to the next digit When you have finished selecting your four screen will return to the speedometer mode You are now ready to 0 on your bike elected wheel circumference number simply press the SET and ns simultaneously The circumference number will sh...

Page 12: ...the last digit will start blinking Press the n until you reach the desired number button to confirm your selection Continue this procedure until e is completely set r press the SET and MODE buttons simultaneously for three mber Again press the SET and MODE buttons simultaneously mber will blink Repeat the steps above to change the wheel ...

Page 13: ...position on the back side near the top blade This position will help protect the sensor from being hit by nches and other objects attach the sensor magnet to one of the spokes on the left side of the djust the magnet and sensor positions by sliding both pieces around the sensor as high on the fork blade as possible while still e necessary magnet to sensor spacing 1 2mm gnet should pass within 1 2m...

Page 14: ...low for the steer of the bike and the action of the suspension fork if you have one rap any excess sensor wire around the front brake cable housing ith electrical tape when necessary When you are finished you e just enough slack for the computer mounting bracket to attach dlebar ake sure that all of the excess sensor wire is either taped down or ound the brake cable housing so that nothing can cat...

Page 15: ...nting bracket facing up Wrap the mounting band handlebar stem and through the slot on the other side of the up as much slack as possible Insert the screw into the slot as hten the band with a screwdriver t of the V 50 is designed to lock into its bracket Slide the the front to the back until you hear an audible snap indicating the irmly in place on the handlebar stem until you are satisfied with i...

Page 16: ...ess band not over tighten the mounting band as this may result in breakage w or mounting band The mounting band only needs to be ugh to keep it from rotating on the handlebar stem during ...

Page 17: ... the mounting bracket r mode in the front wheel The computer should register speed within 1 2 ading check to be sure that the magnet and sensor alignment is e magnet and sensor is 1 2mm or less If this does not solve the Retailer In the United States Vetta customers can call our service ...

Page 18: ...r workmanship for a period of one Vetta will at its sole discretion repair or replace any product y is in lieu of all other warranties either expressed or implied Any or a particular purpose are limited to the one year duration of the e held liable for any incidental or consequential damages ...

Page 19: ...AIR POLICY e function of your Vetta V 50 cycle computer please visit your local your Vetta V 50 cycle computer that can not be solved by your local the simple steps on the following pages to assure quick and ...

Page 20: ...ceipt and a detailed explanation of the problem you are experiencing Please be sure to write the Return Authorization Number RA Number on your return package Vetta USA Limited 650 California Street Suite 2800 San Francisco CA 94108 2609 USA Phone 1 800 GO VETTA or 1 800 468 3882 Fax 1 415 274 3259 Email vettausa aol com Serving US Canada South America Australia New Zealand and Asia A H Vetta Europ...

Page 21: ...ON CARD ...

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