![]() ![]() There are respected racing bike builders whose bikes have trail in the mid-4-centimeter range. You agree that the final determination of an appropriate geometry rests with you and/or any customer for whom you may be building this bike, or causing it to be. When I was designing racing bikes, I liked the feel given by roughly 5.5 centimeters of trail. #Mtb geometry calculator freeThis web site was developed with free open source tools: Emacs, Dia, Iceweasel (Firefox), Epiphany and GIMP packaged by Debian project. The bike manufacturer should be contacted, if exact values are needed. How much trail is correct for a particular category of bike has been the subject of arguments since trail was incorporated into bikes over 100 years ago. Stack and reach calculator Toggle help The calculated reach and stack values are only approximate values. The distance between the two contact points (represented by the red span in the photo below) is the bike's trail.īikes (like commuter bikes) that need to be very stable will have more trail. It will (it better!) contact the ground some distance in front of the vertical line. #Mtb geometry calculator PatchIt will hit the ground at the contact patch of the front wheel.ĭraw another line through the head tube. Learning geometry and calculus from him was a pleasure. ![]() The bicycle geometry calculator allows you to calculate and visualize nearly. We have used the Higher Order calculator (HOC) given in Kernighan and Ritchie book as a model. To understand a bike's trail, draw a vertical line through the center of the front axle (shown in black in the photo below). This page is all about bicycle geometries. Because of a fortuitous combination of factors in bike design, as a rider leans in a particular direction, the bike's trail will tend to turn in that direction, putting the bike back under the rider and keeping him upright. Trail is the bike's caster force that keeps it going straight. ![]() For the print and Kindle eBook versions, just click on the Amazon link on the right.īicycle "trail" is the most important part of a bicycle's geometry for determining how the bicycle will handle. Sign up for our Email Newsletter BikeRaceInfo's Trail-o-Maticīill and Carol McGann's book The Story of the Giro d'Italia, A Year-by-Year History of the Tour of Italy, Vol 1: 1909 - 1970 is available as an audiobook here. CALCULATOR A bike geometry calculator to determine the impact on your bike’s geometry for a number of modifications including installation of angle adjusting headsets, mulleting your bike, changing fork travel or offset, changing lower headset cup or extended crown race, chainstay length. ![]()
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