What a saddle that is too low looks like
Your knee stays deeply bent, even at the bottom of each pedal stroke.
At the top of the stroke, your knees come up high, close to your chest.
Why it costs you
A cramped leg pushes through a short range, so each stroke does less.
Many riders feel it as heavy, cramped pedalling.
Which way to adjust
Raise the saddle a little, film again, and see whether your knee opens further at the bottom.
Make small changes, one at a time. Llyr gives you a direction, never a figure in millimetres.
One check to try
- Pedal steadily for a minute at a comfortable effort.
- Watch your knee at the bottom of the stroke on the replay.
- Raise the saddle a little, ride another minute, and film again.
How to film it so Llyr can read it
Set the bike on a trainer and stand your phone side-on at hip height, square to the bike, with you and both wheels in the frame.
The side view shows the knee bend at the bottom of the stroke. Pedal steadily for at least thirty seconds.
Already have a clip? You can import a video you filmed earlier instead. Read the full filming guide.
What you see in Llyr
When your knee stays deeply bent at the bottom, stroke after stroke, Llyr names it Saddle low and shows it on a still from your own video.
Llyr reads the bend from your own knee range, not one number for everyone.
The cue to take into your next ride is Raise the saddle a little.
Llyr is a second set of eyes, not a professional bike fit. Check each correction on the replay, and if a fitter sees it differently, go with your fitter.