Black mechanical speedometer 60 mm black dial ratio K=1,4.
- With trip meter
- 4 function lights
- Diam (body): 60 mm
- Diam (above): 65 mm
- Height: 50 mm
- Removable bracket
- Classic M12 X 1mm speedo cable connection
- White black light
Calculate your own ratio with formula K= 10 * X/u.
- U is the circumference of the wheel driving the speedometer. Calculate the formula 2 * 3.1416 * radius of the wheel or measuring centimeter on the ground a spin.
- X = the number of turns that makes the square driving the speedometer in 10 wheels laps. Unplug your cable, mark the cable on one side and spin the wheel 10 turns.
If K = 1, choose speedometer model with ratio K=1,0.
Si K = 1,4, choose this model of speedometer with ratio K=1,4.