社区 › 越野车区 › 拯救一颗爆连杆的引擎

Muffin 发表于 20-11-14 12:17:29

拯救一颗爆连杆的引擎

前阵子野跑，油针压太多了，引擎高温，也没在意，结果一个极速过来，突然熄火了，感觉情况不对。。
      
等引擎凉了，转了几下飞轮，才意识到这机器是真凉了https://app.rcfans.com/public/emotion/face_040.pnghttps://app.rcfans.com/public/emotion/face_040.png
回家拆机一看，连杆爆了
http://image.rcfans.com/pic/20201114/1605326599019644306.jpg?x-oss-process=image/watermark,image_cGljLzIwMjAwNzIxL29zc18xNTk1MzM4ODExNTY2XzIzMl8xMThfMzI2LnBuZw==,t_50,g_se,x_20,y_20
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作为一个造起车来六亲不认的人，说实话，一点也不惊讶。爆连杆这事第一次发生在自己身上，反而感觉有点新鲜（手动滑稽）
   大概分析一下，主要问题：
   1、连杆粉碎性骨折
   2、活塞被曲轴啃碎
   3、曲轴，轴承磨损
   4、缸套。。不多解释了
http://image.rcfans.com/pic/20201114/1605326599023018238.jpg?x-oss-process=image/watermark,image_cGljLzIwMjAwNzIxL29zc18xNTk1MzM4ODExNTY2XzIzMl8xMThfMzI2LnBuZw==,t_50,g_se,x_20,y_20
http://image.rcfans.com/pic/20201114/1605326599027247313.jpg?x-oss-process=image/watermark,image_cGljLzIwMjAwNzIxL29zc18xNTk1MzM4ODExNTY2XzIzMl8xMThfMzI2LnBuZw==,t_50,g_se,x_20,y_20
http://image.rcfans.com/pic/20201114/1605326599053836172.jpg?x-oss-process=image/watermark,image_cGljLzIwMjAwNzIxL29zc18xNTk1MzM4ODExNTY2XzIzMl8xMThfMzI2LnBuZw==,t_50,g_se,x_20,y_20
   
然而，相比于一些极端例子，什么活塞稀碎，机壳贯穿、开裂，我这个算是幸运了。手头刚好有一颗同款引擎，被朋友拆去当配件了，缸套和活塞倒留在我这儿。然后又惊喜的翻出一根losi的曲轴（ps：losi 427引擎和我这个机器就是远方亲戚的关系，80%配件通用）

掐指一算，这货有救https://app.rcfans.com/public/emotion/face_071.png
http://image.rcfans.com/pic/20201114/1605326599020692873.jpg?x-oss-process=image/watermark,image_cGljLzIwMjAwNzIxL29zc18xNTk1MzM4ODExNTY2XzIzMl8xMThfMzI2LnBuZw==,t_50,g_se,x_20,y_20
小改钢套，打磨扫气口
   
losi曲轴是手拉机，比启动台长点，磨短。酸洗除锈+表面处理
   
壳体全部清洗，更换轴承

http://image.rcfans.com/pic/20201114/1605326599021506125.jpg?x-oss-process=image/watermark,image_cGljLzIwMjAwNzIxL29zc18xNTk1MzM4ODExNTY2XzIzMl8xMThfMzI2LnBuZw==,t_50,g_se,x_20,y_20
http://image.rcfans.com/pic/20201114/16053265990261608.jpg?x-oss-process=image/watermark,image_cGljLzIwMjAwNzIxL29zc18xNTk1MzM4ODExNTY2XzIzMl8xMThfMzI2LnBuZw==,t_50,g_se,x_20,y_20
http://image.rcfans.com/pic/20201114/1605326599031389635.jpg?x-oss-process=image/watermark,image_cGljLzIwMjAwNzIxL29zc18xNTk1MzM4ODExNTY2XzIzMl8xMThfMzI2LnBuZw==,t_50,g_se,x_20,y_20
http://image.rcfans.com/pic/20201114/1605326599054764385.jpg?x-oss-process=image/watermark,image_cGljLzIwMjAwNzIxL29zc18xNTk1MzM4ODExNTY2XzIzMl8xMThfMzI2LnBuZw==,t_50,g_se,x_20,y_20
一切准备就绪，装机
http://image.rcfans.com/pic/20201114/1605326599024198478.jpg?x-oss-process=image/watermark,image_cGljLzIwMjAwNzIxL29zc18xNTk1MzM4ODExNTY2XzIzMl8xMThfMzI2LnBuZw==,t_50,g_se,x_20,y_20
http://image.rcfans.com/pic/20201114/1605326599029049697.jpg?x-oss-process=image/watermark,image_cGljLzIwMjAwNzIxL29zc18xNTk1MzM4ODExNTY2XzIzMl8xMThfMzI2LnBuZw==,t_50,g_se,x_20,y_20
http://image.rcfans.com/pic/20201114/1605326599032432586.jpg?x-oss-process=image/watermark,image_cGljLzIwMjAwNzIxL29zc18xNTk1MzM4ODExNTY2XzIzMl8xMThfMzI2LnBuZw==,t_50,g_se,x_20,y_20
http://image.rcfans.com/pic/20201114/1605326599055640937.jpg?x-oss-process=image/watermark,image_cGljLzIwMjAwNzIxL29zc18xNTk1MzM4ODExNTY2XzIzMl8xMThfMzI2LnBuZw==,t_50,g_se,x_20,y_20
http://image.rcfans.com/pic/20201114/1605326599056769288.jpg?x-oss-process=image/watermark,image_cGljLzIwMjAwNzIxL29zc18xNTk1MzM4ODExNTY2XzIzMl8xMThfMzI2LnBuZw==,t_50,g_se,x_20,y_20
装车磨合调试
http://image.rcfans.com/pic/20201114/1605326599022281271.jpg?x-oss-process=image/watermark,image_cGljLzIwMjAwNzIxL29zc18xNTk1MzM4ODExNTY2XzIzMl8xMThfMzI2LnBuZw==,t_50,g_se,x_20,y_20
http://image.rcfans.com/pic/20201114/1605326599028191823.jpg?x-oss-process=image/watermark,image_cGljLzIwMjAwNzIxL29zc18xNTk1MzM4ODExNTY2XzIzMl8xMThfMzI2LnBuZw==,t_50,g_se,x_20,y_20
http://image.rcfans.com/pic/20201114/1605326599030400546.jpg?x-oss-process=image/watermark,image_cGljLzIwMjAwNzIxL29zc18xNTk1MzM4ODExNTY2XzIzMl8xMThfMzI2LnBuZw==,t_50,g_se,x_20,y_20
   
重磨合后，算是满血复活

不论是怠速稳定性，还是油门响应，动力输出，都和新机没有区别。对于一个引擎终结者来说，听到如此健康的怠速声浪，怠速一分钟加油门不憋死，真的，无比感动。最主要的是，这次我不是终结引擎，而是拯救https://app.rcfans.com/public/emotion/face_018.pnghttps://app.rcfans.com/public/emotion/face_018.png
http://image.rcfans.com/pic/20201114/1605326661343626535.jpg?x-oss-process=image/watermark,image_cGljLzIwMjAwNzIxL29zc18xNTk1MzM4ODExNTY2XzIzMl8xMThfMzI2LnBuZw==,t_50,g_se,x_20,y_20
http://image.rcfans.com/pic/20201114/1605326662129121231.jpg?x-oss-process=image/watermark,image_cGljLzIwMjAwNzIxL29zc18xNTk1MzM4ODExNTY2XzIzMl8xMThfMzI2LnBuZw==,t_50,g_se,x_20,y_20
http://image.rcfans.com/pic/20201114/1605326662179684255.jpg?x-oss-process=image/watermark,image_cGljLzIwMjAwNzIxL29zc18xNTk1MzM4ODExNTY2XzIzMl8xMThfMzI2LnBuZw==,t_50,g_se,x_20,y_20
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引擎：sh pt28-8p
仅供娱乐交流。不喜勿喷，多多指教https://app.rcfans.com/public/emotion/face_076.png
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爱玩蚊车 发表于 20-11-14 15:00:18

厉害了，sh机配sh车，手艺很强

Twenty 发表于 20-11-14 15:00:58

大佬牛批

请叫小梁去玩车 发表于 20-11-14 15:01:06

大佬大佬大佬

志鹏 发表于 20-11-14 18:04:54

这个引擎是不是没啥低扭

Muffin 发表于 20-11-14 18:07:44

志鹏 发表于 2020-11-14 18:04
这个引擎是不是没啥低扭

确实，低转不行。毕竟扫气多，曲轴也没配重，动力区间主要在高转。
但是马力大就完事了https://app.rcfans.com/public/emotion/face_051.pnghttps://app.rcfans.com/public/emotion/face_051.png性价比还是很好的

goodluck2me 发表于 20-11-14 19:42:14

sh战马，这车不错的

转子发动机 发表于 20-11-15 00:25:10

全OP战马，期待楼主发一篇关于战马的文章

志鹏 发表于 20-11-15 12:15:30

Muffin 发表于 2020-11-14 18:07
确实，低转不行。毕竟扫气多，曲轴也没配重，动力区间主要在高转。
但是马力大就完事了性价比还是很好的

我原来有一个就是 低速光吼不走 高速极其暴躁 声音非常大

Muffin 发表于 20-11-15 21:35:26

志鹏 发表于 2020-11-15 12:15
我原来有一个就是 低速光吼不走 高速极其暴躁 声音非常大

哈哈，确实如此，我都给它用的最硬的离合弹簧，强行补偿起步。高速暴躁是真的，好几次因为没控制好抬头翻车https://app.rcfans.com/public/emotion/face_040.png

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