简介

多少年来,我们一直在叨叨这个:任何一台能够 用电力的设备,将会最终安装上电力驱动。米家骑记电助力折叠自行车现在就在我们的拆解桌上,这是我们拆解桌上的第一件交通工具。小米制造出了智能自行车,但这将成为我们的维修噩梦吗?废话少说,拆吧!

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这个拆解是不是维修指南。 要维修你的的MiJia QiCycle Folding Electric Bike,请使用我们的服务手册

看看吧,我们可爱的小家伙。从外观来看相当时尚了,再来看看规格吧: 安乃达 250 W, 36 V M108RL高速电动机 0.21 kWh 电池 (20 NCR18650PF 锂电池)
  • 看看吧,我们可爱的小家伙。从外观来看相当时尚了,再来看看规格吧:

    • 安乃达 250 W, 36 V M108RL高速电动机

    • 0.21 kWh 电池 (20 NCR18650PF 锂电池)

    • 单次充电助力骑行 45 km

    • 禧玛诺 Nexus 三变速器

    • 根据人脚踏调节的力矩传感助力

    • 骑行数据实时监测,包括速度、里程、动态功率和卡路里消耗。

Für Europa mit nur 75kg Traglast nicht zu verkaufen.

Gerhard Hallermayer - 回复

  • 在我们开始之前,我们有提到这个是可折叠的吗?

  • 简单的几下,就可以从折叠状态变为可骑行状态。

    • 即使有一根大梁和电池,米家骑记总重量为14.5 千克。也就是两只腊肠狗,或者三只猫的重量。

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对于那些不熟悉可折叠电动自行车的,这里是另一个经典的、类似 Brompton 折叠自行车,用于比较。 (这比我们通常的比较要宏观些。) 骑记车轮有一个较小的轴距(870 mm)与较小的轮胎(16'')。固定的车把和坐垫最大下降尺度有限(坏消息,骑车人身高必须超过5'6”/ 170 cm )。 内置自行车计算机可在四种功率模式之间切换,并监视实时骑行数据。 (智能手机应用程序也有很多信息)。
  • 对于那些不熟悉可折叠电动自行车的,这里是另一个经典的、类似 Brompton 折叠自行车,用于比较。 (这比我们通常的比较要宏观些。)

    • 骑记车轮有一个较小的轴距(870 mm)与较小的轮胎(16'')。固定的车把和坐垫最大下降尺度有限(坏消息,骑车人身高必须超过5'6”/ 170 cm )。

  • 内置自行车计算机可在四种功率模式之间切换,并监视实时骑行数据。 (智能手机应用程序也有很多信息)。

I bought one of this but how can i change LCD language from chinese to english?

parhamsameni - 回复

Stessa domanda come si aggiorna a inflese

. Dolcclod - 回复

废话少说,让我们从最简单的部分开始拆:座垫。快速释放两个管夹后,它就拆下来了! 座椅柱将后摇臂锁定到位,因此一旦拆下,自行车就可以折叠起来。 柱子标有最小和最大高度选项,并在后面有一个凹槽。凹槽用于对齐柱子,防止扭曲。这是个好东西!所有的自行车应该有!
  • 废话少说,让我们从最简单的部分开始拆:座垫。快速释放两个管夹后,它就拆下来了!

  • 座椅柱将后摇臂锁定到位,因此一旦拆下,自行车就可以折叠起来。

    • 柱子标有最小和最大高度选项,并在后面有一个凹槽。凹槽用于对齐柱子,防止扭曲。这是个好东西!所有的自行车应该有!

  • 接下来拧下花哨的折叠踏板。该机制在折叠时减小自行车的总宽度。

    • Brompton自行车已经推出(甚至更酷的)折叠踏板一段时间了。小米可能从中寻求了一些灵感。

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链条在后轮部分的外面,有一个方便的后链担架,使拆除很简单。 车链具有52个链轮,而后轮毂齿轮则有14个链轮。这使我们在第一档的比例为1:2.7,在第二档的比例为1:3.7,在第三档的比例为1:5。 链条本身有96个链接。没有用于打开链条的主链接 ,但是标准链工具可以拆开任何链接。
  • 链条在后轮部分的外面,有一个方便的后链担架,使拆除很简单。

  • 车链具有52个链轮,而后轮毂齿轮则有14个链轮。这使我们在第一档的比例为1:2.7,在第二档的比例为1:3.7,在第三档的比例为1:5。

  • 链条本身有96个链接。没有用于打开链条的主链接 ,但是标准链工具可以拆开任何链接。

So the chain is a single speed Narrow (3/32) or Wide (1/8)?

Thanx

Michele

fotoreporter_86 - 回复

取出齿轮盘需要做一些准备,在使用齿轮拆卸扳手之前必须先取下盖子。但之后,它像任何其他自行车齿轮盘一样弹出。 拼图中下一个动力传送装置是中轴。 同样,我们需要一个标准的自行车工具——中轴拆卸工具 ——来撬松这硬件。
  • 取出齿轮盘需要做一些准备,在使用齿轮拆卸扳手之前必须先取下盖子。但之后,它像任何其他自行车齿轮盘一样弹出。

  • 拼图中下一个动力传送装置是中轴

  • 同样,我们需要一个标准的自行车工具——中轴拆卸工具 ——来撬松这硬件。

    • 这些工具听起来很不寻常,但它们是非常常见的自行车修理和维护工具。小米,保持标准是个好选择!

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米家骑记电助力自行车一个不错的功能是这个禧玛诺 Nexus 3速车轮轴。我们很容易卸下曲柄,并取出在轮轴内部的螺帽。 当拆车轮轴的时候,自行车应该在第三档。如需调节的话,第二档也是可以的。 在自行车的另一端,我们把橡胶把手拽下来,拆除变速器把手。
  • 米家骑记电助力自行车一个不错的功能是这个禧玛诺 Nexus 3速车轮轴。我们很容易卸下曲柄,并取出在轮轴内部的螺帽。

    • 当拆车轮轴的时候,自行车应该在第三档。如需调节的话,第二档也是可以的。

  • 在自行车的另一端,我们把橡胶把手拽下来,拆除变速器把手。

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后轮有一个轮轴脚刹,一种花鼓脚刹。它由手动刹把操作,所以你可以自由使用脚刹。 这是一个有趣的选择,但当它在保护刹车的同时,在长时间下坡滑行时会造成跳跃和过热。从长远来看,这些刹车应该几乎不需要维护,只需要不时地进行润滑。 我们开始挖出刹车电线,但它看起来像铆接到轮轴组件,并将保持连接在这一端。
  • 后轮有一个轮轴脚刹,一种花鼓脚刹。它由手动刹把操作,所以你可以自由使用脚刹。

    • 这是一个有趣的选择,但当它在保护刹车的同时,在长时间下坡滑行时会造成跳跃和过热。从长远来看,这些刹车应该几乎不需要维护,只需要不时地进行润滑。

  • 我们开始挖出刹车电线,但它看起来像铆接到轮轴组件,并将保持连接在这一端。

  • 因此,我们松开将轮轴固定到车架上的螺帽,然后拿出带有28个辐条,3变速轮轴和滚轮刹车的16寸车轮以及其后刹车电线。。。

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当然,要它不是智能自行车,我们也不会拆解它。所以到了我们检查速度传感器的时间了。 电线连接在座椅下方,然后沿着框架延伸到(模块化)插座。 我们能够剥离电线,并拆下传感器组件。
  • 当然,要它不是智能自行车,我们也不会拆解它。所以到了我们检查速度传感器的时间了。

  • 电线连接在座椅下方,然后沿着框架延伸到(模块化)插座。

  • 我们能够剥离电线,并拆下传感器组件。

    • 测量骑车人的曲柄力矩的传感器系统是IDbike TMM4 或类似的东西。

The TMM4 sensor is used JUST to measure crank torque and NOT to detect speed that is measured directly from the sensors inside the motor

diego - 回复

推出小电路板,我们得到这个奇迹测量器的核心: 一个1820A可编程线性霍尔传感器 这利用霍尔效应在车轮转动时跟踪车轮,使用它来确定你的行驶速度(和你的工作努力程度)。
  • 推出小电路板,我们得到这个奇迹测量器的核心:

  • 三线系统使用简单的 JST 连接器连接,而不是焊接。现在这就是我们所说的模块化。

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回到更机械的东西,我们卸下前刹—— 一个标准的双枢轴侧拉钳式制动器。 为了找到更多的电子元件,我们的目标是带有轮轴齿轮电机的前轮。 一个简单的拖拉断开轮轴电机电线,使我们终于可以取出前轮。
  • 回到更机械的东西,我们卸下前刹—— 一个标准的双枢轴侧拉钳式制动器

  • 为了找到更多的电子元件,我们的目标是带有轮轴齿轮电机的前轮。

  • 一个简单的拖拉断开轮轴电机电线,使我们终于可以取出前轮。

    • 这个前轮,重2.65 千克,几乎是整个自行车重量的20%。

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拧下盖子后,我们可以推出旋转运动的源头,并发现电机后盖后面的一个小圆形板。 除了分配功率,它还具有用于(每四个线圈)测量速度的三个传感器。 外圈上12个线圈使中心主轴上的10个磁铁260次/分钟的转动。电机的连续输出功率为180 W,扭矩为7.3 N*m。
  • 拧下盖子后,我们可以推出旋转运动的源头,并发现电机后盖后面的一个小圆形板。

  • 除了分配功率,它还具有用于(每四个线圈)测量速度的三个传感器。

    • 外圈上12个线圈使中心主轴上的10个磁铁260次/分钟的转动。电机的连续输出功率为180 W,扭矩为7.3 N*m。

  • 翻转侧的三个齿轮由塑料制成,以将磨损保持在最小。

Ist der Hersteller des Motors bekannt bzw. nach dem Öffnen zu Erkennen ?

Kann es sein, dass der Motor hergestellt wird von:

Changzhou Huayu Xinfeng Motor Co.ltd ?

Joerg Bucher - 回复

Hallo Joerg, den Hersteller des Motors konnten wir bislang noch nicht herausfinden. Die Aufgedruckte Nummer am Motor gab auch keinen Aufschluss über die genaue Herkunft (MV8536VN2C5AN16GF2648). Huayu Xinfeng Motor Co.ltd stellt einige verschiedene Motoren her, jedoch habe ich auf den ersten Blick diesen Motor nicht darunter entdeckt.

Tobias Isakeit -

我想去除电机的耗电和前轮电机产生的摩擦阻力,只使用电池来显示时间、速度以及车灯的使用,这个怎么操作?

I want to remove the power consumption of the motor and the friction resistance of the front wheel motor. I only use batteries to show time, speed and the use of lights. How does this work?

MainRoad - 回复

Please I'm not quite get how to open the hub motor, I've already unscrew 3 screw on the cover lid, still the hub not open, please help.

Bayu Oktaviantino - 回复

Please I'm not quite get how to open the hub motor, I've already unscrew 3 screw on the cover lid, still the hub not open, please help.

MainRoad - 回复

Why the planetary gears are plastics?

Does they transfer the power too?

Googly Head - 回复

Hi, when looking at the specs for this motor, it clearly says 30Nm, while i know xiaomi has 7,3 Nm in their spec sheet. I think Xiaomi got it wrong and is under selling the torque http://ananda.com.cn/index.php/wap/produ...

okstor - 回复

现在,欢迎来到 拆解中。 我们剥离了大多数自行车零件。留下的铝骨架重5.5公斤,超过总重量的三分之一。 我们继续从顶管拉出主插头,使我们能够提取连接所有电子元件的神经系统。
  • 现在,欢迎来到 拆解中

  • 我们剥离了大多数自行车零件。留下的铝骨架重5.5公斤,超过总重量的三分之一。

  • 我们继续从顶管拉出主插头,使我们能够提取连接所有电子元件的神经系统。

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只有4个 Torx 螺丝固定自行车计算机的盖子与 160 × 128 像素的 TFT 屏幕用简单的 ZIF 连接器连接。 在板的另一面,我们找到以下芯片: 联发科 MT6261A ARM 处理器
  • 只有4个 Torx 螺丝固定自行车计算机的盖子与 160 × 128 像素的 TFT 屏幕用简单的 ZIF 连接器连接。

  • 在板的另一面,我们找到以下芯片:

How to factory reset the trip computer?

Yen Martinez - 回复

Same question : How to factory reset the trip computer?

Because, battery is 100% but computer show 5%, update software failed :-(

SO no i do not have electrical assistance

axel ta - 回复

Same question, software update failure now MC and BMS show 000-000-00 and i’ve lose electrical assistance

Clads92 - 回复

Hi ifixit,

How did you remove the metal plate that protects the MTK 6261A CPU and the Winbond 25Q128FV CHIP ?

Best Regards

JohnDie - 回复

Carefully ;) but with the help of a side cutter. Removing those shields is not recommended and might effect the function of the chips.

Tobias Isakeit -

Ok i took it off :)

But it's not a chip W25Q128FV on my board..

It is written 25LQ128CWIG on chip.

GigaDevice GD25LQ128CWIG

I have to do a dump jtag.

JohnDie - il y a 1 heure

JohnDie - 回复

我们把最棒的、或至少最强大的电池管保留到最后拆! 该管可以单手取出,只需按下一个按钮,可以用5针连接于侧面在3小时内充电。 自行车的重量大部分来源于这个电池——它重1.46公斤,当然是充满电的时候。 ;)
  • 我们把最棒的、或至少最强大的电池管保留到最后拆!

  • 该管可以单手取出,只需按下一个按钮,可以用5针连接于侧面在3小时内充电。

  • 自行车的重量大部分来源于这个电池——它重1.46公斤,当然是充满电的时候。 ;)

  • 自行车的电池容量重为5800mAh(208.8Wh)。上一个无意义的比较,电量超过5 个12.9英寸的 iPad Pro 12.9"!

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我们开始撬开后灯,电缆保持在适当位置,但能看到一些隐藏的螺钉。进入内部就有办法啦。 这个大型脐带从充电端口通向另一端的电池和BMS(电池管理系统),并在后灯后面有一个LED板。 我们剥掉电路板,发现一些秘密。这个电路控制后面的LED阵列,以及沿管顶部的一些LED(可能指示电池活动)。
  • 我们开始撬开后灯,电缆保持在适当位置,但能看到一些隐藏的螺钉。进入内部就有办法啦。

  • 这个大型脐带从充电端口通向另一端的电池和BMS(电池管理系统),并在后灯后面有一个LED板。

  • 我们剥掉电路板,发现一些秘密。这个电路控制后面的LED阵列,以及沿管顶部的一些LED(可能指示电池活动)。

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主电池盒很难打开。五个螺丝(隐藏在一些很难撬开的盖子下)并不是全部。 当我们在一些温和的加热和“良好的振动”下最终成功打开的外壳,搞坏了一些芯片。自行更换电池恐怕不行。 我们终于拿到了奖品:20 个松下NCR18650PF锂离子电池!松下是一个很好的(安全)品牌,所以充电应该是很容易地,即使自行更换容易。
  • 主电池盒很难打开。五个螺丝(隐藏在一些很难撬开的盖子下)并不是全部。

  • 当我们在一些温和的加热和“良好的振动”下最终成功打开的外壳,搞坏了一些芯片。自行更换电池恐怕不行。

  • 我们终于拿到了奖品:20 个松下NCR18650PF锂离子电池!松下是一个很好的(安全)品牌,所以充电应该是很容易地,即使自行更换容易。

    • 电池组还具有电池管理系统(BMS)电路板。

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该板装有大量电阻器。突出的是以下组件: 一个ATMEL MEGA 328P 电池管理 MCU
  • 该板装有大量电阻器。突出的是以下组件:

    • 一个ATMEL MEGA 328P 电池管理 MCU

    • S11428 33TVF

    • FL12.000 12 MHz 石英晶体振荡器

  • 另一面,我们发现这些:

    • 单n沟道沟槽MOSFET(x4)MDU1931 芯片

    • RS2M 整流器

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我们回到自行车的主体,做一些更多的拆卸,然后最后处理电子产品。 自行车的主铰链 ——后摆叉 ——通过简单的内六角螺栓固定在顶管上。 当从框架分离时,我们可以清楚地看到倾斜的不对称铰链。
  • 我们回到自行车的主体,做一些更多的拆卸,然后最后处理电子产品。

  • 自行车的主铰链 ——后摆叉 ——通过简单的内六角螺栓固定在顶管上。

  • 当从框架分离时,我们可以清楚地看到倾斜的不对称铰链。

    • 这种独特的形状允许它在骑行时与自行车保持一致,但折叠时摆在前轮旁边。

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第二个重要的紧固件是可折叠手柄杆和主干。设计机制本身是很酷的,并且很容易拆开。 为了将前叉从铰链上取下,我们使用了不常见但必不可少的 10mm 内六角扳手,这是自行车维修的基本工具。 前叉被铸造为铝制单一部分,重量只有0.71公斤,比一个足球重不了多少!
  • 第二个重要的紧固件是可折叠手柄杆和主干。设计机制本身是很酷的,并且很容易拆开。

  • 为了将前叉从铰链上取下,我们使用了不常见但必不可少的 10mm 内六角扳手,这是自行车维修的基本工具。

    • 前叉被铸造为铝制单一部分,重量只有0.71公斤,比一个足球重不了多少!

Could you please provide detailed dimensions of the fork?

Alexey Vavilkin - 回复

剩下的是顶管,完成了头灯和大脑(更多在后面)。 这铝制配件重量只有1.36公斤! 用手使劲一转,我们可以解开大灯,并把它拆下来。
  • 剩下的是顶管,完成了头灯和大脑(更多在后面)。

    • 这铝制配件重量只有1.36公斤!

  • 用手使劲一转,我们可以解开大灯,并把它拆下来。

  • 单根电缆带有一个简单的连接器,来保持这种大功率LED运作良好 ...。

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控制单元安装在一个方便的把手上,使用了两个简单的螺丝连接到框架。 拆下螺丝后,我们可以通过导轨抓住控制器单元,并将其直接向外滑动。 这辆自行车的大脑是一个由 Ananda 制造的电动自行车控制器,Ananda 是许多电动自行车组件的制造商。
  • 控制单元安装在一个方便的把手上,使用了两个简单的螺丝连接到框架。

  • 拆下螺丝后,我们可以通过导轨抓住控制器单元,并将其直接向外滑动。

  • 这辆自行车的大脑是一个由 Ananda 制造的电动自行车控制器,Ananda 是许多电动自行车组件的制造商。

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  • 当然,“单个单位”对我们来说并不意味着什么,我们拧下几个标准的十字螺丝钉,开始撬起固定的套管。

    • 我们拿到一个Jimmy和iFixit开启工具,并尝试拆解——没有任何效果,即使在加热的情况下。

  • 我们把努力转到侧板,我们在里面的发现会震撼你(人们总是为内在而着迷,对吗?)

  • 三个板 ——由一队夹子连接 ——淹没在黄色透明橡胶里。

    • 我们认为这是为了减弱振动和帮助散热到铝外壳。

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大多数重要组件都住在电池针板上,我们发现了: STM32100C8 微控制器,采用 ARM Cortex-M3 32位RISC内核 MCP2003 LIN J2602 收发器
  • 大多数重要组件都住在电池针板上,我们发现了:

  • 其余的覆盖板主要承载电容器和其它无源组件。

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而且,这辆自行车被折叠,展开,完全拆解。
  • 而且,这辆自行车被折叠,展开,完全拆解。

    • 除了无聊的自行车配件如轮胎,我们只为拆解折叠电动自行车的“电动”部分。

  • 这个布局比平时的大一点, 随时可以放大看看

Nice job, I've just received one of these and am much happier with my purchase after learning about the inside of this sweet ride. Thanks!

Del Riordan - 回复

hello the cycle does not react the battery, hard bastane time without load by the shipment and delivery, the loader gives green light parapadeante before connecting it to the battery, I do not know how to make the battery work.

maogonley - 回复

最后的想法
  • 标准自行车部件和工具在整个自行车中使用,使修理更容易。
  • 电池组件可以容易地移除和更换。
  • 电子元件可以在不损害自行车的情况下移除,延长其使用寿命并使回收更容易。
  • 座杆,车架和前轮轴电机是非标准的,当制造商不提供更换配件时,自行更换有点困难。
  • 电池组是一种复杂的组件,当单个组件发生故障时就需要进行整体更换。
可修复性评分
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可修复性10分中得6分
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My axiomi qicycle seat post keeps slipping down despite locking d 2 release clamps tightly. Caused a fall from d bike as d seat post slipped and hit d ground jamming d moving bike. How to tighten d 2 clamps to ensure no slippage especially cycling at a higher speed?

Thanks

Zho - 回复

The quick release clamps can be adjusted by using the bolt on the opposite side of the handle and tightened by closing the handle. The QiCycle is constructed for max 100kg weight. You may also try cleaning the seat post for a better grip (maybe it got a little greasy during the assembly).

Tobias Isakeit -

I am wondering if the two saddle clamps can be replaced. And if so where to find them? Help very much appreciated :).

Jannes - 回复

The saddle clamps should be replaceable with standard quick release clamps of the correct size. Depending on the design the handle might not be curved like the original one and therefore stand off a little bit.

Tobias Isakeit -

Thank you for all the pictures. Unfortunately after a drop of the battery my taillight is not switching on anymore. Do you have detailed pictures of the disassembly of the taillight. Maybe it is only a connector that is loose... Thank you :)

Montie - 回复

Hi Montie, we don't have a separate guide for the back light yet. But to get it off, you need to grab it very tight and turn it counter-clockwise. The rest can be seen on the pictures in step 16 (four screws and the cables inside).

Tobias Isakeit -

Hi Tobias, thanks for the fast reply. I know how to get to the connectors (thanks to your good illustration) but I need to get *into* the light because the connectors which are visible seem to be okay. Obviously I have to peel the red plastic off which is not clipped but sealed. The back (black part) of the light is one single plastic part if I see this right. Any further help would be nice. Should I use a knife? I don"t want to destroy anything...

Montie - 回复

Hi Montie, getting into the light itself without "destroying" it looks quite impossible I guess (we haven't tried it). The light looks as if it is sealed from both sides, front and back.

Tobias Isakeit -

Hi!

My Charger seems to be dead. Even LED Indicator wont light up and it doesnt charge the bike. Do u have any advice or guide to open it up, or to work the batteryside connector onto another fitting charger?!

Thx

Andreas P - 回复

Hi Andreas, unfortunately we haven’t torn down the charger itself. Charging the battery via other means sounds like an experiment I would not recommend unless you know what you are doing.

Tobias Isakeit -

Same with the case you are experiencing, is it now resolved? If so, I would like to get feedback on the issue from you. Thank you

Yosu Hanisusilo -

Someone knows how to bypass/remove/change 20km/h speed limit ?

Thanks in advance

Diego

diego - 回复

There is a firmware update. It came automatically to me via the app. I mean I was asked within the app whether I wanted to upgrade the firmware that would lead to 25km/h.

bill depo -

Just FYI: firmware update seems to be possible only by using an Android device, not iOS.

Andrew S. -

I didn’t get any update firmware . what’s the last software version indicated in bicycle info in the app?

Ali Titan -

What does the Max speed mean?

If I'm pedaling quicker than 20km/h then the engine will not help me to reach 30?

Is there mode how can I ride 20km/h without pedaling?

dannique XXII -

Hi,

I tried to upgrade the Qicycle but it never ask me to upgrade the firmware in the app.

Could you say me which app we have to use ?

- https://play.google.com/store/apps/detai...

- https://play.google.com/store/apps/detai...

I tried with iphone too but it don’t work.

The version of the driving computer is : 1.6

Thx for your help.

Janoyolo -

Hello,

I just get this bike and I’m very happy with the quality of the model! Your tutorial is great and very clear, I will not hesitate to consult it if needed.

I have one question for you :

I’m 1,85m tall and I have to put the seat at its maximum position in height but that’s fine. The problem comes from the handle which is a bit low.

Do you know if it could be replaced by a foldable adjustable handlebar ? I’ve seen some on the market, and it would solve this issue.

Thanks for your amazing work.

Léo

Mourey Leonard - 回复

Yes, it is possible, something like https://www.aliexpress.com/item/Aluminum...

Although the original stem has much better quality, so I ended up just adding this adapter to make the stem longer: https://www.amazon.com/TranzX-Alloy-Twin...

Andrew S. -

I have another important concern :

My electric motor is not working on my Qicycle.

When I use the different modes with the pushbutton, I’m not feeling any help from the assistance of the motor. The battery works properly, as well as the on-board computer that displays correctly : the battery level, the current speed, the power in Watt and the assistant mode.

The application shows the message : "One issue found : please check the motor line on the left of the front wheel”

I don’t know how to proceed to fix this. Can you help ?

Thank you

Mourey Leonard - 回复

You may want to check the cable on the left hand side of the fork if it is connected properly (see second picture in step 11).

Regarding the height problem in your other comment I’m sorry to tell you that the bike is designed for people under 170cm. The seat post and handle bar post are non-standard components and don’t look like they can be replaced with longer versions.

Tobias Isakeit -

This is not true, there are 3 options:

1) Replace the stem with telescopic one

2) Add the stem adapter https://www.amazon.com/TranzX-Alloy-Twin...

3) Replace the handlebar with curved one

Andrew S. -

Please I'm not quite get how to open the hub motor, I've already unscrew 3 screw on the cover lid, still the hub not open, please help.

Bayu Oktaviantino - 回复

у меня такая же проблема. кажется, что корпус является монолитным. это не так, как там покрыть возможные отвинтите.

Leonid Kazarin -

The lid sits very tight. Try to get a grip through the three holes (for example with two allen wrenches) and turn counterclockwise. (Caution: the lids edge is very sharp)

Tobias Isakeit -

What did you use to open the lid Tobi?

Are you using three allen wrench?

Bayu Oktaviantino -

I used two allen wrenches (short part in the holes long part along the axis) and used the axis as pivot point.

Tobias Isakeit -

Is there a way to buy a battery pack for this bike ? I need one desperately …

Miguel Fonseca - 回复

La bici mi é arrivata con il display del computer di bordo scheggiato,infranto il display una volta acceso non é leggibile.

Come posso ovviare a questo? È sostituibile con un nuovo display?Dove posso trovarlo?

Grazie

Agostino - 回复

Aliexpress…. 65€ circa!

fotoreporter_86 -

The chain jumped down while I went uphill and only low engine support. How can I avoid this in the future?

Jürgen Weißmann (7ii) - 回复

Hi Jürgen, check the spring on the rear chain stretcher (see step 5). This should provide enough tension for the chain to not jump.

Tobias Isakeit -

Hello,

What kind of axel and nuts does the front fork have ?

Is it M10 nuts ?

Thank you

Mourey Leonard - 回复

Hi Mourey, I used a size 19 wrench, so its probably M12.

Tobias Isakeit -

hi! great teardown! do you know the dimensions and weight of the batterypack? i'm planning to buy the bike in china and then send the pack in mail, since its not allowed to take the battery in your suitcase or carry-on in airplane.

maurits irizarri van suchtelen - 回复

Hi maurits, the battery pack itself is 46 x 7 x 7 cm (±0.5cm ;) ), weight is 1.46 kg.

Tobias Isakeit -

Thanks! If its not too much trouble, do you know the size of the bike when folded and the saddle removed? To See if i can fit it in a suitcase without completely taking it apart.

maurits irizarri van suchtelen -

Spiegazione al di sopra di ogni aspettativa. Una pecca, manca la spiegazione su come installare la lingua inglese essendo tutto in cinese.

. Dolcclod - 回复

help: I update the firmware with android and now the qicycle go fast to 26 km/h, but the led light rear don’t works more!, instead before it’s ok, also the computer on board don’t read the status of the battery, plase help me!! also other peaple have the same problem…

francesco Villeggia - 回复

I have a problem.

When my bike is off, suddenly the engine on for a second and the wheel turns.

This happens more time for a day. Where is the problem? In the controller or in the computer?

Thank you.

Fabio - 回复

Dear Fabio, I have exactly the same problem than you. I have the bike since 2 weeks and even the bike is off, the wheel turns anytime sometimes one turn sometimes more …

Do you fix it?

Thank you bye

Olivier - 回复

Hi everyone,

Did anybody find the right antitheft combination for the QiCycle ?

I’m thinking about the Kryptonite NY M18-WL + some Hexlox to secure the saddle, handlebar and wheels. But as I’m still waiting for the bike to be delivered, I can’t really figure out if Hexlox can be used on these wheels.

Anybody tried or has other ideas ?

Thx !

Léa Gilezo - 回复

Hi,

Please can someone help me with the gears? I received my bike on the 28th of this month and I have successfully upgraded to latest firmware. The problem I am having is on the 2nd gear when i pedal it feels like it is skipping, it is not pedalling smoothly. 1st and 3rd gear seem fine and don’t skip.

Any ideas how i can fix this? I notice the yellow dot in the nexus gear is not in the correct lines.

Thanks Az

Az Rahman - 回复

This is because you have folded the bike in 2nd or 3rd gear, and pulled the gear cable, you need to fold it ONLY in 1st gear.

To fix it now you have to follow this procedure:

http://en.miui.com/thread-330192-28-1.ht...

arnaud greusard -

Hallo,

mein Qicyle hat anscheinend leider einen defekt. Das Rad schaltet sich von selber aus obwohl der Akku noch 80% hat und am Akku selber noch 4 LEDs leuchten. Auch das Update konnte ich nicht aufspielen, es wurde mir von keiner App (ich hab so ziemlich alle Apps probiert) angeboten.

Hat einer ähnliche Probleme? Ich gehe davon aus, dass der Akku defekt ist. Bei Lieferung war er komplett leer, also keine Statu-LED am leuchten.

Beste Grüße, Christian

Christian - 回复

I have recorded the issue. If anyone can help?

https://drive.google.com/file/d/1y2EZdu8...

Thanks

Az Rahman - 回复

Hi Bobo,

Thanks for the video. I saw this same video earlier today and followed the same steps but I couldn’t get the yellow dot to align in the middle of the 2 lines as shown on the video.

None the less I turned the cable adjustment all the way in and even though the yellow dot isn’t in the middle of the 2 lines it fixed my issue :)

Thanks

Az Rahman - 回复

Hi, I need to increase the speed of this bycycle, would you help me with the tutorial, the video. Thank you.

Dušan Hojer - 回复

Dears, I just received my bike, the app on android proposed me the upgrade. Since then, The onboard computer shows my battery being empty, the red light doesn’t work anymore also the electric assistance doesn’t work. Any way to do a downgrade of the onboard computer? (as on the battery the 4 led lights are on when testing.)

honer - 回复

Hi Vincent , take a look here >> http://en.miui.com/thread-710300-1-1.htm... <<

I solved same issue following the instruction of the user julferber ( see page 2 )

Be patient and good luck ;-)

Bobo - 回复

Hi, i have Qicycle EF1 since october. The bike worked well since yesterday. Since yesterday, the bike has some issues that are a little bit annoying.

I think it may be that the speed meter is broken, so it does not detect that the bike is in motion. (posible issue of hub gear motor measuring speed?)

-Display don't show speed screen when I run with it (in 22km of my travel, only show this is screen 2 times only 10 seconds, and the display show 0 km/h, 0km, 0wat) But all time this screen doesn't appear. Only show battery screen, the same screen when you're stopped.

-The display tur off when I'm ridding, like when the bike is stop. 1 min for default setting. When I press a button when I'm reading, the screen wake up, like when the bike is stop.

- I can't change the power assistence, If i change the bike continue to 150%.

- In some cases, the bicycle offers less assistance and lowers the power alone, just a few seconds, without any reason. The engine continues, but with less power.

Thanks!

doctorase - 回复

Hi,

You can follow this to fix your problem:

https://translate.google.ru/translate?sl...

Az Rahman -

Is it possible to put all the pieces into a bagage 31CM*46CM*70CM?

Tao Wang - 回复

Probably not. Bike dimensions folded are: 450x1000x650 mm. See product page, under specifications.

Tobias Isakeit -

Is there a way to remove the speed sensor or trick it to believe it’s going slower than it is?

arnaud greusard - 回复

I mean to increase the top speed past 25kmh which is still a little slow. Or a firmware hack?

arnaud greusard -

hello: I just got the bike and my mother fell with the bike and she hit the screen. I do not know if it has arrived with defect or has been the blow on the screen! The problem is that suddenly the screen turns off and runs out of energy! Sometimes when it is turned off and the lights are on, the back light stays on for a few seconds when the screen is off, until it shuts off completely. I'm about to buy a screen! I could i check in some way that the screen is causing the bike to turn off?

Andrés - 回复

hello: thanks for your previous response. Today, lift the front wheel of the bike, when I was walking. It stopped working. it went out I checked the cables with the (polymeter tester) and the cables are not broken. What do you advise me to do?

Andrés - 回复

hello,

i have MC and BMS show 000-000-00 and i’ve lose electrical assistance !!

can not update MC and BMS with QiCycle app official or not :-(

axel ta - 回复

Salve, sono Vincenzo

ho una qicycle, che negli ultimi giorni mi sta dando problemi, la sento più pesante ed il motore non mi sembra sia scattante come prima.

Da cosa può dipendere? io mi sono accorto di qualche anomalia al cambio, la marcia 3 non entra alla perfezione e la taratura in seconda risulta non corretta, il pallino giallo si trova fuori dalle due estremità di “set” può dipendere da questo? cmq cercando di settarla rimettendo il pallino al centro , ma quando provo a muovere il cavo di riferimento questo non si muove… che posso fare?

grazie a presto.

vinz - 回复

* Why has the control unit 5 pins? It labels plus and minus for the 42V so far so good but what is the e.g. Vlm pin for?

* Also the charging cable has 5 pins. Why is that? The battery has 10 cells in series so I guess it cant be for balancing reasons.

* Where can I find such a connector/socket for the control unit plug?

The reason for my questions are that I am planning to do a 42V battery pack by myself.

Martin Hammer - 回复

Hi guys,

I am experiencing an issue that has been recorded from others as well in the past.

The motor has stopped working since a few days.

The story:

- I had an accident falling off the bike about a month or two ago and since then I have been experiencing problems with the electrical assistance.

- First symptom was that the motor would not work always

The problem here was that the cable attachment under the battery tube on the front (https://i.imgur.com/SQFFSUQ.png) connecting the motor, battery, Hall sensor etc. had been slightly removed because of the usage and the crash potentially. The problem was fixed after it was properly attached.

bill depo - 回复

To get the motor to work again I had to completely stop the bike so the Watts would go back to 0 and then start again.

bill depo -

- I kind of got used to the above problem but then the motor would not work at all. The display works as usual (showing Battery, Speed & Watts ).

I opened the black cable from the motor as in the post below and found one of the three (the blue one) fat wires inside (out of 9 in total) cut. I then used one of those wire connectors https://i.ebayimg.com/images/g/HnoAAOSwG... to connect it back and did it successfully. After removing the cable all the way from the motor to the plug before the torque sensor I tested with a digital multimeter that there is conductive path from each pin of the plug leading to the torque sensor with one pin of the central plug (under the battery) and same between the pins of the plug leading to the motor and the central plug again. So, it seems that everything works correctly with the cable.

https://translate.google.com/translate?a...

bill depo -

Doing the self-test within the app for the bike, I got notified that there is a problem with the front wheel and the left side of the cable . As mentioned previously everything has been plugged correctly and fixed the cables.

My only hypothesis is that either:

1. The torque sensor is not functioning properly (I will try cleaning it as per the link https://translate.google.com/translate?a...). I don’t think it is this having a problem though, cause the Watts displayed are in a normal range that the motor would normally work. Same for the speed therefore the problem must be in the motor

2. The motor has a problem. I have unscrewed the 3 lid screws but can’t open the motor at the moment and even then I wouldn’t know what is the problem and how to fix!

3. There is still a problem with the cable or plugs (eg not making proper contact)

What do you think might be the problem and what should I do next?

bill depo -

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