這個引擎是仿 HONDA REBEL 250 的並列雙缸,然後再擴缸到320 CC。維基上頭提到並列雙缸的好處,我簡單描述一下。1) A parallel-twin is cheaper to make.並列雙缸造價便宜(與其他雙缸,如V型雙缸,或BMW的水平雙缸比)2) Siting of ancillaries (air-filter, carburettors, ignition, etc.) is simpler.輔助設備(空濾,化油器,點火系統)的位置很好喬。3) This simpler layout can potentially make maintenance access easier.維修簡單。4) The parallel twin is both lighter and narrower, allowing a lighter frame and shorter wheelbase.引擎可以做得較窄,較輕。所以車架可以做得輕,軸距可以短(短軸距適合市區)5) The motorcycle's centre of gravity can be sited optimally, i.e. lower and further forward.車的重心可以更低。6) Provided a 270° crank is used, a four-stroke parallel twin can simulate the "feel" of a four-stroke V-twin.配上270°曲軸,可以模擬 V-twin,V型雙缸的感受。
rocketman wrote:5) The motorcycle's centre of gravity can be sited optimally, i.e. lower and further forward.車的重心可以更低。 這點我有些懷疑啦除非是水平的不然像照片中普通的直立前傾其實做1,2,4缸都一樣重心高度---不知這台車幾時上來從這樓出現後就有點期待這台黃輕檔如果還不錯,先等看看第一批的感想,等到除bug版本後再買如果很糟,就去買黃牌羊了
天天吃阿鈣 wrote:如果像1樓說的15~...(恕刪) 我也要預購, CP值太高了只是320cc才24ps馬力,及125km/h的極速是否會太弱,但一級油耗(35km/L)也夠吸引人了!!月底會上市 一起團購如何??謝謝