woodbutcher
Veteran
- Location
- S W France
Thats interesting, is the 106% of inside leg length measured from the top of the seat to the top of the pedal when it is a 6 o'clock ? And so frame size is not as critical as l had assumed. The the other confusing (for me) idea which l have seen lots of times on U Tube tutorials is that if you drop a plumb line from your knee cap to the crank when it is at 9 o'clock the plumb line should just touch the end of the crank arm. What that proves lm not sure.As a rule of thumb when seated your leg should be straight with the pedal in the six o clock position. Some years ago the university of Nottingham I think it was did some tests with pro riders to find the most efficient seat height for power delivery. They came up with 106% of inside leg measurement so the leg was slightly stretched.
The handlebar reach can be adjusted to your taste.
Then you have all that stuff about the fore and aft position of the seat and the angle of the seat in relationship to the ground. After all these years l didn't realise how difficult it was so difficult to ride a bicycle, I think l'll go and have a lie down !