聯合太平洋鐵路「大男孩」蒸汽火車頭

Librick Lego 聯合太平洋鐵路「大男孩」蒸汽火車頭

老式蒸汽火車頭可是很多火車迷的終極浪漫,荷蘭玩家Bricksonwheels用樂高打造的這個美國聯合太平洋鐵路4000系列4-8-8-4關節轉向架式蒸汽機車;別稱「大男孩」,細節上完全不輸給一般的火車模型,快來感受一下樂高火車迷的極致熱忱吧!
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「大男孩」建造於1941年到1944年,雖然僅生產了25台,但因為功率輸出和體積一樣強大得讓人印象深刻,在蒸汽火車頭逐漸式微的年代,仍舊受到鐵路公司的青睞,持續被委以重任,直到今天也被很多火車迷們銘記在心。
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要用樂高打造一個巨大的蒸氣火車頭,已經不是一件簡單的事,更何況是還要讓它能在樂高軌道上跑!光是在軌距和車輪的選用上就要大費苦心了。正因為現有的樂高車輪都不能滿足作者的要求,他只好使用3D列印機打造專屬的車輪;而為了打造出更真實的外觀,就連車輪間的傳動裝置也全是使用3D列印自製的零件喔!
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另外就是動力系統的兩難局面:因為火車頭又大又重,要推動火車頭得仰賴夠力的馬達,而夠力的馬達又需要夠多的電池支援;但太多的電池又會導致火車頭更重更難驅動,所以在動力上必須要有相當準確的計算,才能讓火車頭順利運轉。

馬達和電池組就裝在第二截的煤槽內(共裝載了3具XL樂高動力引擎),而不是像真正的火車頭由車頭拉動後面的車廂,主要理由當然是因為煤槽內才有空間能塞得下馬達和電池。Image title


而在動力裝置的設計上,作者為了讓功效最大化也使用了一些非樂高原廠的裝置,像是田宮模型(就是玩四驅車常用的那家)的電池線和SBrick的藍芽接收控制器,最終終於讓這具火車頭成功動起來啦!
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光是能動還不夠,要會發光才夠蝦趴!作者最後還為這具火車頭加裝了燈泡,重現夜間行駛的英姿;甚至還打算裝上發煙裝置徹底重現蒸汽火車的英姿,可惜最後因為找不到適合的套件而作罷。千萬不要小看這些燈泡喔,藏在車頭內的配線總長達2公尺,也是一件大工程呢。Image title

整個作品耗費兩個半月的時間完成,車頭和煤槽總長106公分、寬9公分、高13公分,總共用了3400個零件,這種追求極致的精神實在是太讓人佩服了!Image titleImage title

 
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