METHOD 2: THE LEMOND METHOD
The LeMond method, named after the American cyclist who won the Tour de France three times and invented it, is also based on your inseam length.
The difference is, though, that it measures your ideal mountain bike seat height based on 88.3% of your inseam length. The seat height is measured from the top of the seat to the bottom bracket.
While those two methods may seem very similar, they do sometimes seem to result in seat heights that aren’t equally as comfortable. This is because the LeMond method doesn’t take into account the length of your cranks. It’s a good way to find a starting position, though.
METHOD 3: THE HOLMES METHOD
This third method is completely different from the other method described in this article. To find your ideal seat height using this method you’ll need to get yourself a goniometer. With this device, you can measure the angle of your knee joint at the bottom of a pedal rotation. The recommended angle is somewhere between 25 and 35 degrees.
If this sounds too technical and you don’t want to spend money on a goniometer just to find your seat height, you can use one of the other methods. It’s good to know, however, that research has shown that placing your seat based on this method has better results than the others.
METHOD 4: THE HEEL METHOD
The heel method is the most basic of them all. It’s the one that every bicycle shop owner and trainer knows about.
Begin by placing your seat parallel to the ground. Get on your mountain bike, getting someone to support you or supporting yourself by holding onto a wall or object. Place one foot on a pedal, making sure your heel is on the pedal axle.
In this position, with your pedal at its lowest point, your leg should be totally straight. When you then place your foot on the pedal, like you would when actually biking, your leg will be a bit bent. This is the easiest and arguably most used method to find your ideal mountain bike seat height.