Where your weight sits

Your position shifts the weight; the frame shifts the wheels beneath it.

The starting point is a typical race bike in size 58. Calculated for a person 178 cm tall with an 84 cm inseam. With your bike and your measurements: enter them in the calculator.

Front wheel 41% · Hands 27%

On the wheels

Rear wheel 59% Front wheel 41%

On your body

Saddle 62% Hands 27% Pedals 11%

While rolling, without pedalling. Pedalling takes load off the saddle and the hands.

Slide the hands to the drops and then the chainstay to the right: one shifts your weight, the other the wheels beneath it.

What you adjust yourself

From left to right: front 40% to 43%, hands 27% to 30%.

From left to right: front 40% to 43%, hands stay at 27%.

From left to right: front 42% to 41%, hands 27% to 26%.

From left to right: front 41% to 42%, hands 27% to 26%.

What the frame does

From left to right: front 42% to 41%, hands stay at 27%.

From left to right: front 43% to 40%, hands 28% to 26%.

From left to right: front 40% to 44%, hands stay at 27%.

From left to right: front 40% to 44%, hands stay at 27%.

How the bike steers: calm or agile → Your measurements in the calculator → Reset the sliders

Where the numbers come from

Every body part has its weight in its place: shares of body weight from anatomical tables (de Leva 1996), separately for men and women, at the joints of the figure in the picture. The legs are averaged over one crank revolution.

Front and rear wheel are exact: the centre of mass lies between the two contact points and splits the load like a lever. The bike itself is included at 8 to 9.5 kg, for a rider of 75 kg.

Saddle and hands are a simplification: while rolling, the pedals carry the lower legs and feet, saddle and hands the rest. Measured on 23 recreational riders, the handlebar carried on average 36.5 % (± 4.2) of what saddle and handlebar carry together. The model arrives at 30 %, so it tends to put too little on the hands.