BikeDynamics Bike Fitting Summary
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Uploader Comments (Bikedynamics)
Top Comments
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well explained, thank you
1 year ago 4
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That was the most informative and well presented road-bike fitting instructional video out of all of those I've seen on youtube. Thank you very much. There's one that labels the leg angle as 10-20deg (hand-drawn) and not the 147.4deg that you show clearly and correctly.
All Comments (23)
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Brilliant video and explanation! Thanks a lot!
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@marwooj He use Dartfish.
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Nice vid! What software are you using?
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The hip "spot" is not on the centre of the hip hinge point. It should be stationary, but isn't - it's going up and down, thus negating all the angle measurements.
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1:18 - Saddle height should be dependent on hamstring flexibility, not knee angle. If a cyclist has poor hamstring flexibility and the saddle is set too high, the lumbar and thoracic spine will flex to compensate and place a greater risk for back pain and intervertebral disk herniation.
Also at 2:12, how is he measuring the ankle when the markers aren't placed from the forefoot to the ankle joint? The pointer should sit on body landmarks- the heel to the forefoot, not the heel to the pedal.
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What software do you use to make the video analysis?
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Sorry Dave7348 but you are wrong, the centre of hip rotation is below the surface of the skin, so this point on the surface will never be stationary. The top of the greater trochanter is generally regarded as a best approximation and the guidelines have been established using observation of this point.
Bikedynamics 2 months ago
Agreed. Saddle height is dependent on hamstring flexibility, that is Dynamic flexibility, which is not as easy to measure as static. If you look at the website there is more detail on this. To also answer you second comment, this video is not intended to be a precise defintion of body position on a bike. It is intended to help people get close enough to a good position to allow fine tuning. Many of the old bike fitting rules can put people cm's away from their ideal posture.
Bikedynamics 3 months ago
The software used is Dartfish.
Bikedynamics 3 months ago