OrionsComfortBus
Senior Member
OK!
I think I found the formula for figuring out the International Speedometer DiP switch settings.
Tire diameter multiplied by 3.14 to get circumference. divide that by 12 to get feet. 5280 feet per mile divided by tire circumference. multiply that by the rear axle ratio and use that final number to cross reference the dip switch settings.
HERES MINE
40 X 3.14=125.6
125.6 / 12=10.4
10.4 / 5280=507.69
507.69 X 3.91=1985
1985 = 1001000010
Going to check this tomorrow.
I think I found the formula for figuring out the International Speedometer DiP switch settings.
Tire diameter multiplied by 3.14 to get circumference. divide that by 12 to get feet. 5280 feet per mile divided by tire circumference. multiply that by the rear axle ratio and use that final number to cross reference the dip switch settings.
HERES MINE
40 X 3.14=125.6
125.6 / 12=10.4
10.4 / 5280=507.69
507.69 X 3.91=1985
1985 = 1001000010
Going to check this tomorrow.