Geometry

Dynamic riding technology leads to modern geometries

The knowledge gained from working together with our team riders and their “dynamic” requirements of the ride technology has fundamentally changed the position of the rider in the ROTWILD bike over recent years and has led to “new, modern geometries”. Other factors such as the new wheel sizes of 29” and 27.5”, the adaptation of head tube and seat post angle as well as reach enable us to integrate the rider into the overall concept of the bicycle much better. The background is the greater drop (vertical distance between bottom bracket shaft to wheel axle) with larger wheels, which causes the rider to sit “deeper” in the frame than is the case for example in the 26” wheel concept. Riders are therefore not confronted with a flip-over sensation and can adopt a relaxed, casual posture on the bike when descending. Impacts or obstacles can be overcome more easily and more calmly with a bent body posture while muscle fatigue is reduced at the same time. In addition, the rider is able to exert more pressure onto the front wheel and has more control over the bike as a result. This combination brings out the benefits of short stems and wide handlebars. Steering no longer takes place exclusively via the handlebars, and instead the corners are taken more actively by a corresponding shift of the body’s centre of gravity, enabling a steeper cornering position and high cornering speeds.

Seat post length concept for lowerable saddle supports

Our ROTWILD frames are designed for adjustable saddle supports with a drop of 150 mm and an insertion depth of 225 mm (overall length 435 mm). They are optimized so that the smallest person with the shortest inside leg (RH S) and the tallest person with the largest inside leg (RH XL) can find their optimum seat height using the recommendations in our size table by taking account of the complete extension range of the adjustable saddle support.

The table of geometries below defines four lengths of seat post. In combination with the data of the lowerable saddle support, we determine the minimum and maximum saddle height for this frame size in the first step. This can then be used to specify the minimum and maximum inside leg measurement, from which it is possible to derive the heights for the corresponding frame sizes.

Seat post length [mm]Saddle height [mm]Inside leg [mm]Height [mm]
min.max.min.max.min.max.
4006507507308501.6201.720
4356857857708901.7001.800
4757208208109301.7801.880
5107558558509701.8601.960
5401.9402.000

More about geometry in our knowledge database.

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