【老车复活】古董油车traxxas nitro 4tec复活记录
故事开始于ebay… 170刀整车购自eBay，据卖家说是自己当年闲置的车，后来升级了trx2.5引擎和排气套件，试了一次就闲置了，因此推测应该是第一代的nitro 4tec 。刚到手的时候整车状态就不错，轮胎目测是新换的。车壳是卖家自己用田宫漆喷的，到手后发现细节非常棒。加州的卖家人也非常好，亲手写了一张卡片，送了一包相关的原厂配件，以下是刚到手的照片。http://image.rcfans.com/pic/20220508/1652068664745974_865.jpg?x-oss-process=image/watermark,image_cGljLzIwMjExMDA2L29zc18xNjMzNTM0ODIxOTgzXzg2NF81MzNfNTYucG5n,t_50,g_se,x_20,y_20
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到手第一件事就是 拆！先在traxxas官网下载了说明书和爆炸图，准备大卸八块来个全套大保健，检查一下状态顺便了解一下这车的结构。之前接触过的平路油车有94122和fw06, 这些都属于娱乐车中常见的轴传车型。而t厂的4 tec这种娱乐车中使用皮带传动的还是头一回见，因为以往认知中只有竞赛油房为了防止加速时的轴效应跑偏才会用皮带传动。相对于传统轴传车，个人觉得皮带传动更具机械感https://app.rcfans.com/public/emotion/face_wangchai.png 可能也是之前玩直升机喜欢皮带传动的原因。在拆的过程中也发现了两个小问题，离合杯的一颗轴承爆了，以及二档甩块被几米螺丝卡住，除此之外基本没有其他机械问题，前后避震油也是有区别粘度的。
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拆完全车零件，用异丙醇和毛刷清洗，然后开始组装。另外对发动机也进行了彻底的大保健，刚打开曲轴进气开口处还是有很多蓖麻油垢的，转动也有些阻力。本人对发动机的清洁方式是先把缸头拆下来用无水酒精浸泡，之后用毛刷清理，再把活塞缸套连杆组和化油器单独放在另一个容器中用无水酒精浸泡，再用刷子清理。最后由于手头没有飞轮工具，没发取出曲轴，于是直接往进气口倒满无水酒精浸泡一晚，第二天用毛刷清理干的蓖麻油垢，效率很高！前后对比图效果明显，无水异丙醇对蓖麻油垢溶解性很好，顺便还能把前后轴承冲一遍，最后用风枪让酒精蒸发，加入事后油润滑。经过发动机清洗，去除了大部分污垢，特别是减少了轴承的阻力和改善了进气，盲猜至少能提升个1%的效率https://app.rcfans.com/public/emotion/face_043.png
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之后一切零件就绪，开始从头组装！适当对接收机和舵机电池规划走线，这车的接收电池是裸露在外的，空间比较小，容易和皮带轮侧面干涉摩擦。通电发现原配转向舵机无力，于是又花35刀淘了一个xpert4431无刷舵。首次下地测试先用的cool power15%硝基17%合成油的粮食中低速小磨了3箱油，后逐渐锁主油针，调整二档转速，换vp20% 14% oil的油。加速迅猛，有点大牛拉小车的感觉。第一次用tqi的控，不知道6533接收机自带陀螺仪，所以刚开始发现高速时抖舵，有些高频的甩尾，后面通过降低感度可以稳定跑直线。至此，86复活！最后放两个os转子彩蛋https://app.rcfans.com/public/emotion/face_061.png
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很细心的玩家！赞 连杆又没有装反？ 连杆有没有装反？ 彬少 发表于 2022-05-09 18:25
连杆又没有装反？
连杆看着好像是反了 彬少 发表于 2022-05-09 18:25
连杆有没有装反？
应该没有 之前反复检查过连杆是对称的 而且连杆没有从活塞上拆下来过 活塞裙部的缺口方向也是正对着曲轴的 如果不这么装会卡住曲轴 HEAVY123 发表于 2022-05-09 22:16
应该没有 之前反复检查过连杆是对称的 而且连杆没有从活塞上拆下来过 活塞裙部的缺口方向也是正对着曲轴的 如果不这么装会卡住曲轴
那就好 放几张近期下地的照片https://app.rcfans.com/public/emotion/face_043.png
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http://image.rcfans.com/pic/20220509/1652145248338343_52.jpg?x-oss-process=image/watermark,image_cGljLzIwMjExMDA2L29zc18xNjMzNTM0ODIxOTgzXzg2NF81MzNfNTYucG5n,t_50,g_se,x_20,y_20
http://image.rcfans.com/pic/20220509/1652145248339508_373.jpg?x-oss-process=image/watermark,image_cGljLzIwMjExMDA2L29zc18xNjMzNTM0ODIxOTgzXzg2NF81MzNfNTYucG5n,t_50,g_se,x_20,y_20 2.5cc就是12级，不存在大马拉小车，而且这个引擎也不算很猛吧。 yysqu 发表于 2022-05-10 09:56
2.5cc就是12级，不存在大马拉小车，而且这个引擎也不算很猛吧。
2.5cc是2.5*6=15级 trx2.5发动机是通用的 以前t厂的8车也用这款引擎 后来出了trx3.3 用在10车上还是绰绰有余的 感觉动力过剩主要可能还和之前fw06有过对比 另外传动比不一样