(26-07-2011 11:13)f1a5h84ck писал(а):  

(24-07-2011 15:05)Скользящий писал(а):  в любом случае - сначала геометрия потом велик...

Олег, скажите пожалуйста, как понять подходит ли тебе геометрия выбранного велосипеда или нет?

ориентировочный размер рамы по своим размерам можно получить отсюда - http://www.competitivecyclist.com/za/CCY...ATOR_INTRO
получите парметры:
Standover Height Range
When it comes to road bikes we often focus on seat tube length when sizing a frame. Things get a bit more complicated, though, when talking about mountain bikes. The vagaries of hardtail frame geometry and the varying styles and travel length of rear suspension mean that your ideal seat tube length can vary wildly between different frame models. This being the case, the best benchmark we have for evaluating the height of a frame is by assessing its standover clearance. This is the distance from the top of the top tube (measured at its midpoint between the seat tube and head tube) to the ground. If a frame's standover height is too short for you, its head tube will almost certainly be too short. This results in too low of a handlebar position placing an inordinate amount of stress on your neck and back. If a frame's standover height is too tall, the bike will be considerably more difficult to maneuver fluidly through technical singletrack and more cumbersome (and possibly more painful) to dismount in a pinch. A bike with the proper standover height will feel balanced, nimble, and agreeable to the body english you exert on it to make it go where you need it to go. Because a full suspension frame typically has a higher bottom bracket and its shock tuning is largely dependent on sag settings, the recommended standover height for a full suspension frame will most often be larger that that of a hardtail. Thus, we provide two Standover Height Ranges: one for hardtails, the other for full suspensions.
Virtual Top Tube Range
This is not a measurement of the actual top tube itself. Rather, this corresponds to the mountain bike industry standard of measuring an imaginary line drawn parallel to the ground along the length of the top tube from the midpoint at the seat tube to the midpoint at the head tube. This is also known as an "effective top tube." No single piece of frame geometry has a greater impact on comfort than your top tube. If you plan on paying attention to one measurement and one measurement only, make it this one.
Stem Length
This measurement indicates your ideal stem length. It takes into account that your stem will be flipped to its flatter angle (e.g. 80°, aka -6°, for Easton).
BB-Saddle Position
This measurement is along the seat tube, from the center of the bottom bracket spindle to the top of the saddle. It is an ideal starting point for saddle height. Given the varying differences of cleat and pedal heights, and given the varying differences in the thickness of saddles, the BB-Saddle position has a broad range of 2cm.
Saddle-Handlebar
This measurement ties together your choice of stem length with the fore/aft position of your saddle. It is measured from the nose of the saddle to the near edge of your handlebar. Keeping within this range will assure that you don't accidentally push the weight balance of your body either too far forward or backward.
допустим, результат:
All Mountain Fit
-------------------------------------------
Standover Height Range: 29.3 - 29.9 inches
Virtual Top Tube: 22.6 - 23.0 inches
Stem Length: 6.7 - 9.1 cm
BB-Saddle Position: 64.2 - 70.2 cm
Saddle-Handlebar: 49.8 - 51.6 cm
если померять рулеткой в конкретном велике, то... ну ооочень далеко не у всех велов эти параметры рядом... разлет может быть в размер, допустим, 18" и 19" для разных марок велов...
напомню - это все для ориентира... но, для обычной езды, не спортивной, такого подбора вполне достаточно...
еще добавлю, цена любого вела условно делится на три суммы - рама = колеса = навеска... и в любых стоковых велах это соотношение, обычно, соблюдено... т.е. иными словами - на зубильный азимуд или команч нехрен ставить верхний рок-шок или шатуны на октолинке... потом - на исправном веле едет тело + рама, а не задний дероулер саинт за мегаевро...
где-то так, коротко...

---

и вообще, пора почитать Шелдона Брауна...
http://www.sheldonbrown.com/rinard/fea.htm