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Akrapovič exhaust on a Koenigsegg Jesko. The company partners with motorcycle manufacturers such as Yamaha, [12] who offer Akrapovič cans as optional factory- or dealer-fit equipment on the R1, [13] and MT-01; [14] and BMW Motorrad who offer an Akrapovič can as standard on the R nineT, S1000R, F800R, [15] HP2 Megamoto, [16] and as an option on most other bikes in their range. [17]
Weight. 160 kg (352 lb) [1] (dry) The Honda CL77 or Scrambler 305 is the off-road or scrambler version of the Honda C77 Dream and the CB77 Super Hawk of the 1960s. [2] Scramblers, designated CL by Honda, differed from the sport bikes (designated CB) to allow for some off-road riding. The CL77 differed from the CB77 Super Hawk in a number of ways.
Muffler. Silencer (silver) and exhaust pipe on a Ducati motorcycle. A silencer cut open to show the insulation, chambers and piping inside the shell. A muffler (North American and Australian English) [1] or silencer (British English) is a device for reducing the noise emitted by the exhaust of an internal combustion engine —especially a noise ...
Expansion chambers were invented and successfully manufactured by Limbach, a German engineer, in 1938, to economize fuel in two stroke engines. Germany was running short of petrol, which was at that stage produced using coal and sewage transformation. An unexpected bonus was that the two stroke engines using tuned exhausts produced far more ...
The layout of a 4-2-1 system is as follows: four pipes (primary) come off the cylinder head, and merge into two pipes (secondary), which in turn finally link up to form one collector pipe. [2] Compared with a 4-1 exhaust system, a 4-2-1 often produces more power at mid-range engine speeds (RPM), while a 4-1 exhaust produces more power at high RPM.
Helmholtz resonance sometimes occurs when a slightly open single car window makes a very loud sound, also called side window buffeting or wind throb. [7] Because cars have a large volume, the frequency of the wind throb is quite low. [8] Helmholtz resonance finds application in internal combustion engines (see Airbox), subwoofers and acoustics.