Old 08-30-04, 06:07 PM
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Here's KB's article on The Myth of KOPS >>> http://www.sheldonbrown.com/kops.html

Although many people disagree with Keith, I believe what he has to say about the whole issue and find his arguements compelling. What he does state though, is that short of getting properly fitted by a bike physiologist and fit expert, KOPS will at least get you somewhat in the ballpark, but then again so will any other coincidence. KOPS should not be mistaken for an 'essential fit element', simply because it has no basis in fact. ( as does many other blindly accepted fit 'facts', but that's a whole other thread )

Weight distribution is also very important. Your CG ( centre of gravity ) in relationship to the wheels is a big part of what dictates how your bike handles ( Which is ironic considering almost no bike company factors that into their stock geometry ), and those that do usually have some weird idea that every size bike must attempt to fall within a 3" or whatever window.

I agree, fit is confusing, but my general observations thusfar is this.

1) People generally sit too far forward. There are very few people on the planet that require a 73 or 74 degree seat angle with a non-offset post. There's a reason most people sit too far forward - riders generally have poor flexibility, and the majority of posts nowadays are non-offset design.

2) What's happeneing here is also riders compensating for poor CG/weight distribution. If the rider had a more rearward position and slightly longer stays, this would fix that problem.

3) A more forward position seems to shiftswork from muscles in the back of the leg to he front of the leg. This is probably more powerful for short distances, but the muscles in the rear of the legs ( glutes etc ) are larger and more adept to endurance efforts, and a rearward position also appears to work all the muscles of the legs more evenly. This is annecdotal evidence, but appears from my POV to be true.

Fit is a very complex issue and really, only sports physiologists that specialise in cycling really have a handle on it - the rest of us just amass info from the web and the experiences of ourselves and others. The best thing you can do is keep an open mind, realise that everyone is different and that bodies do adapt.
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