Bike fit calculator

Before You Start

This calculator is designed to help you replicate your existing road bike position on the Wattbike Pro, Trainer, Nucleus, Atom or AtomX. For a complete bike fit or time trial fit please consult a professional bike fitter.

Before you start, make sure you have the following tools:

• Tape measure
• Plumb line
• Masking tape or electrical tape
• Marker pen
• Somewhere to record your measurements e.g. paper, phone

Taking measurements: Step 1/12

You will need to take six measurements, which will establish the x and y coordinates of the saddle and the hoods relative to the bottom bracket.

Taking measurements: Step 2/12

Place the bike so that the rear wheel is against a wall, or similar. Make sure it is upright and will not fall over.

Taking measurements: Step 3/12

Use the tape measure to identify the point where the saddle width is 80mm, and mark this with tape and a pen.

Taking measurements: Step 4/12

On the floor, run a tape measure from the wall to approximately the centre of the front wheel. The tape measure should be as close to the centre line as possible and in alignment with the bike. Use some tape to hold the tape measure in place, and lock the tape measure if possible.

Taking measurements: Step 5/12

Drop a plumb line down from the saddle at its 80mm width to the tape measure on the floor. The measurement at which the plumb line bisects the tape measure is Ax.