Bits and Pieces Exhaust System
Here in the first of a series of insights into racing components and technology, we explore the importance of our Akrapovic exhaust systems for our race performance.
A racing exhaust system is designed to provide a useable torque and power in the upper end of the rpm curve where riders need it on the track. The design is adjusted specifically for each type of bike and aims to optimise engine performance as well as smooth out unwanted fluctuations in power curves.
Other considerations include the impact on bike handling as a result of factors such as centre of gravity, compact physical packaging and minimising weight as well as compliance with maximum exhaust system noise level regulations.
The shape and length of the tubes is extremely important for ensuring the optimal flow of exhaust gases. The object is to create the best possible and fastest flow of exhaust gases away from the cylinders. D-shaped, conical and appropriately bent tubes are ideal structures in areas where exhaust gas turbulence is at its highest level and causes the greatest amount of interference. The recent trend of mounting exhaust systems under the seat has implications in many areas including tube length, centre of gravity and heat dissipation. It looks good but without careful consideration for engine characteristics it is something that can actually reduce power outputs.
Since racing exhaust systems are custom manufactured for racing bikes with special engine settings and gear-boxes, such systems cannot usually be mounted on standard road motorcycles. This would have a major effect on engine performance as the system works poorly at the low revs necessary in normal road use. However Akrapovic also make a range of exhaust systems to enhance the performance and looks of road bikes. You can see their website at |