Bike Computer?

Question

I have a simple Mongoose (wired) bike computer. I accidently reset the computer and of course I don't have the instructions anymore. I was wondering If anyone knows the four digit code that you have to enter at start up. The bike has a 26" wheel base

I tried looking online but couldnt find any info.

Answer 1

I'm pretty sure the code you mention is the tire circumference needed for the computer to calculate speed, distance etc.

This number depends on the actual tire diameter on your bike they all vary a little. A ball park figure is 2050 to 2090 measured in mm. But you can figure it yourself.

You need to do a roll-out. You need your bike, a flat, paved surface, tape measure and piece of chalk.

Make a chalk line on the pavement as a starting line. Put your front wheel on the line with your valve stem exactly strait up over it. Roll your bike in a strait line until the valve stem is exactly strait up again. Mark it carefully with the chalk. Now measure from line to line. This number, should be around 80" if I remember correctly. Convert to mm (1" = 25.4 mm). This is the number you need.

Do this roll-out a couple times, you'll get a more actuate number. Put this number in your computer.

Answer 2

Listen to MR. That's the way to do it.

Answer 3

Maybe try mongoose.com