Road Bike Stem Chart
Time trial position chart for time trial bikes.
Road bike stem chart. The rise angle of stem from fork to bar has quite a large effect. Lenghts and angles differ and are important when fitting a bicycle to suit a rider. However in terms of attachment standards important dimensions are the handlebar attachment diameter and steering column attachment diameter. Shorter stems result in noticeably quicker and more responsive handling that is a definite advantage on technical singletrack and gravity riding.
Changing the stem length not only impacts your fit and comfort it affects the handling dynamics of a road bike. To calculate the effect of raising a stem add 0 96cm of rise for every 1 0cm of quill or steer tube you expose and subtract 0 30cm of reach. The charts contain auto fields and data may be typed directly to the chart once it is downloaded. There are two separate charts available as pdf files.
As a rule of thumb on a road bike you shouldn t run a stem much shorter than 90mm or much longer than 130mm. If you need a stem length beyond those extremes your bike frame is the wrong size. Wake mtb stem 31 8 90mm 110mm 0 60 degree adjustable bike stem mountain bike stem short handlebar stem for bicycle road bike mtb bmx cycling aluminum alloy lightweight black by wake 19 99 19. Sizing a road bicycle is not as complicated as you may have been led to believe in part due to the reality that a good bike fit actually has little to do with the bicycle per se.
Fitting a road bicycle comes down to the contact points connection points between the cyclist and their bicycle. Whereas road riders tend to choose stem length based solely on overall bike fit and positioning for off road riders the length of the stem is critical in determining how the bike handles. All contents licensed under a creative commons attribution noncommercial share alike 3 0 license unless noted otherwise creative commons attribution noncommercial share alike 3 0 license unless noted otherwise. In depth the most significant thing while choosing a road stem is the length of the stem may be the key factor for overall fit of the bike.
Riders like to get a long small and aerodynamic position of the bike e g spirited racers can choose for a longer 1200 mm stem for optimum stretch. A shorter stem will result in snappier steering a longer stem will produce slower steering. Picture 2a shows a quill stem with a shorter neck angled downwards next to a threadless stem with a longer neck. 9 top tips for setting up your new road bike.
Road positioning chart for common road type bike.