Tuesday, February 5, 2013

An idea I was kicking around.

Components of bicycle handling due to tire variation,

I think that bicycle handling is not viewed in a realistic way. I want to start the journey that ends in real progression rather than marketing hype. This is some of what I’ve learned.

Stability; Stability comes from increased width and decreased pressure, stability slows down reaction from rider input and reactions from outside variables.  Increasing stability does not mean that you will not slide, but it does mean that you will be less likely to fall down when you do.

Grip; Grip comes from tread design and decreased pressure. Grip will change the likelihood of sliding though it does not help you stay upright once a slide has begun. Grip is very misunderstood as it is associated with width, but seems to have little to do with width. More width can lower the minimum pressure thereby increasing grip but doesn’t seem to contribute to grip directly.

Float; Float does not help you in a corner and seems to help primarily when force perpendicular is questionable. This may seem of little value, though it does help as a sort of straight line stability. For example, ram jamming through a snow bank. Float is often misunderstood. It relates to the pressure that is being run. Maximum float equates to minimum pressure that is possible. It is often viewed as maximum width, but in fact contact patch is a 2 dimensional shape and length should also be accounted for. This has to do with tire diameter and again pressure.

Reaction; Reaction is possibly the same thing as stability though for this reference it is viewed through a different lens. As width increases  Reaction becomes slower and the bike will feel heavier. This is mentioned in stability, though it is necessary to point out the negative connotations of increased stability.

This is not a complete list and definitely not 100% scientific. The main purpose is to view grip by it’s components rather than as one quantity.

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