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But honestly speaking, if you continue touse the stock frame, these new B gears won't also survive long despite the factthat they are new ones. You already notice that a plastic "B" gearwon't even survive one flight, that's all due to the "unstable kiss"between the A gear and B gear while they are working in a speed of more than4000 RPM per minute. You have to make sure the AB gears kiss each other in avery stable distance both vertically and horizontally in a gap around 0.1MM.This means that you have to use some ultra-thin brass gaskets of 0.1mmthickness to adjust the vertical movement of A gear and the horizontal movementof B gear. It’s hard to do this in a stock frame. You have to disassemble it, andg break it up to pieces every time if you want to make any adjustment of thiskind. Plus that the little tiny 1.5*4*1 bearing behind the B gear wears downvery easily, and even you have make a good balance this time, but after some 20flights the balance will be broken , and you have to make some new adjustmentto achieve a new balance, sounds like an equilibrium always change itsfrequency. That’s why spent so much time and energy onthis 3D printed main frame. I know these problems clearly and finally find thesolutions for both durability and easy maintenance for any parts on this tinyflying machine.
自己翻译自己写的文字，没有按英文的思路写，但内容核心是一样的 130X是个非常不错的概念机子，之所以说是概念机子，就是因为它不耐飞，就算你当年花了6K来升级它很漂亮，它还是不耐飞，部件过于“小”是其中原因之一，，但设计上缺陷才是重点，原机几个致命的设计弱点明显与耐用相违背的： 1.开模两片成型的一体化机架，强度是足够的，达到了2S机子的要求，尤其是与1230内转原装马达很搭，相对于九鹰318A来说真是太好了，318A的机架简直是太脆了，但130X原装机架的严重缺点之一就是十字盘舵机固定的螺丝孔很容易爆裂，固定尾管的螺丝孔也容易爆裂，这可能是过度追求轻量化导致的后果； 2.其二，也是最重要的缺陷，是设计缺陷，由于采用这么小的伞齿进行每分钟3000转以上高速传动，对伞齿的咬合顺滑度和平稳度要求就非常重要了，这依赖于A齿的上下间距和B齿的前后间距，而原机架设计这两项都是不能调的，完全依靠出厂的标准，一个出厂没调好，基本上就是一个起落就把B齿磨平了，即使出厂是好得，20个起落后B齿后面的小轴承磨损也非常快，原因是太薄了，1.0厚度的，而且要更换这个轴承要整个机架拆掉才可以，非常麻烦 3.尾巴那一坨的脆弱显而易见，尤其是一体化的尾T轴，本来就是1.5的轴径还一半长度削了半个平面，基本一撞就歪，尾轴转动速度非常快你别想拆了敲敲纠正还能继续用，尾轴废了那个尾中联是一体化的也就跟着废了，这里九鹰318A就设计比它先进，独立的尾中联和尾轴，而且削的长度只有一丁点，基本炸不坏
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发表于 2024-7-30 16:40
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