OS FR7-420 70CC 7缸 6月底開賣

v86662a

哇!十倍價格,一次七顆引擎在吃油,油箱要多大才能爽飛啊?

陳慶庭

漂亮........

YAK9717

9缸的也不錯

huangsir

請問：多缸前輩
一定要單數的汽缸嗎?
雙數的汽缸不行嗎?

relliklin

原帖由 huangsir 於 2010年5月12日 11:21 AM 發表
請問：多缸前輩
一定要單數的汽缸嗎?
雙數的汽缸不行嗎?

基本上多缸引擎要將點火爆發時差錯開給每一缸~動力才能連續~雙數的話就無法在2圈(4個行程)內都點火爆發完!
要雙數~行!~引擎要變成要[雙排]多缸(例如:7缸雙排=14缸  9缸雙排=18缸)~就可以變成[雙數]~只是到了這個缸數通常都是載人飛機了~弄成RC沒有意義!除非是有刻意收藏者本身又是此類製造者~才會有迷你型的多缸引擎收藏(就是不飛的那種)老美老英都有類似達人網站~能自行設計開發多缸~奇特的引擎!我記得有一個美國網站:好像是[老約翰工作室]它就是專門製做引擎的網站!也接受客製!我找一下看看~晚點PO上來
先PO一個[真機]使用得多缸引擎網站圖片~

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[ 本帖最後由 relliklin 於 2010年5月12日 02:15 PM 編輯 ]

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http://www.enginehistory.org/bristol_hydra.htm