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Wheelbase(3 posts)

Jun 4, 2001 6:56 AM
I tried a Trek 5200 56cm this weekend and noticed that my toe can hit the front wheel. the wheelbase is 3 cm shorter than my old 56cm Trek. Is it a problem?
Wheelbase variablesCima Coppi
Jun 4, 2001 7:19 AM
The wheelbase on a frame is a function of three measurements and two angles. They are:

Chainstay length
Toptube Length
Fork Rake
Seat Tube angle (or setback)
Head tube angle

I do not know much about Trek geometry specifically, but the toe overlap you are experiencing is mostly due to a short top tube. There is thread lower down where some of us discuss this very issue.

As far as if it's a problem, that's in the eye of the beholder. I have been told to size a frame with no toe overlap. Other people don't believe its an issue. You may also want to check the cleat adjustment on your shoes to make certain they are not set too far forward. The pedal axle should be directly beneath the ball of your foot.

Good luck!!
Don't worry about itpeloton
Jun 4, 2001 8:25 AM
The toe overlap that you describe is common among smaller frame sizes. The only time that you are really in a situation to have your toe touch the wheel is when you are trackstanding at a red light. Some companines have taken stpes to eliminate toe overlap on their frames. In most of these cases, crappy handling came as part of the solution. Some toe overlap on a smaller frame is needed to have a bike that handles well.