Saturday, August 20, 2011

Yamaha Tmax Tuning

The appearance and frame of an underbone is quite different to that of a motorcycle, but the powertrain is functionally almost identical. The underbone engine is positioned between the rider's feet (perhaps a bit lower than that of a motorcycle) but the rear wheel is driven by a regular motorcycle secondary chain drive. Styling considerations only mean that the chain driven nature of the machine tends to be concealed under sheet-metal covers to a greater extent than that of motorcycles.

In only one significant respect does the underbone differ from the conventional motorcycle - there is no frame member or fuel tank between the seat base and the headstock. The underbone arrangement improves ease of mounting and dismounting and contributes to the cross-gender appeal of the layout as an around-town shopping and commuter vehicle. The engine size of a typical underbone is generally between 50 cc and up to about 150 cc, though much bigger ones are possible.From Wikipedia






Yamaha Tmax Tuning


Yamaha Tmax Tuning


Yamaha Tmax Tuning


Yamaha Tmax Tuning


Yamaha Tmax Tuning


Yamaha Tmax Tuning





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