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LEGO马达的比较

更新时间:2023-05-17 19:58:39 阅读：评论：0

LEGO马达的比较

Lego® 9V Technic Motors compared characteristics

杏鲍菇怎么做好吃素炒

May 2006 update: now includes NXT motor

See also this comparison page.

Thomas Avery has also performed measures on 5292 motors, e Lugnet thread.

The roster

	Electric Technic Motor 9V Lugnet Partsref 2838c01, Peeron 2838c01, Lego 74569 The older 9V Technic motor (1990). Ungeared, it has a high rotation speed and low torque, so for most applications it requires an external gear reduction.
	Electric Technic Micromotor Lugnet Partsref 2986铁锈怎么洗, Peeron 2986, Lego 70823 Appeared in 1993, this small, light weight motor turns slowly and offer low torque - but respectable torque for its size. Must be ud generally with pulley, top and ba, but other motion transmissions are possible (e examples by Brian Sadowsky, with a 16t gear/clutch or a pin joiner)
	Electric Technic Mini-Motor 9v 1069年 Lugnet Partsref 71427c01, Peeron 71427c01, Lego 71427蝙蝠侠阿甘骑士 Since 1997, this motor replaces 2838. Geared down and quite efficient, this is the motor of choice for most applications.
	Electric Technic Mini-Motor 9v 拜拜英文 Lego 43362 In 2002, Lego replaced 71427 motor with a new type, 43362. Externally almost identical, its internal structure is very different. Performances are almost as good, and its weight is much lower.
	Electric RC Race Buggy Motor Peeron 5292 Introduced in 2002, this motor appeared with 8475 RC Race Buggy. Very powerful, it also consumes a lot of energy. Not recommended for u with a RCX which can't deliver the current needed by this beast. The innermost shaft hole is geared up by a 23/17 factor. Only the outermost output is tested below.
	Electric Technic Motor 9V Geared Peeron 47154 This motor was first included in 4094 Motor Movers t (2003). Provides an axle hole with friction, allowing to choo axle length without the need of an extender. Flat bottom allowing easy mounting.
	NXT motor This motor is specific to the NXT t (2006). Includes a rotation encoder, returning to the NXT the position of the shaft with 1° resolution. Becau of the special connector of this motor (non-standard phone plug type), a cable adapter is required to drive this motor with regular 9V sources. Not recommended for u with a RCX which can't deliver the high current that this motor can consume. Slow rotation speed, minimizing the need of external gear train. 刷子李课文

Weight

2838	2986	71427	手抄报模板免费 43362	5292	学生的朋友47154	NXT
48g	10g	42g	28g	55g	40g	80g

Suppod to be equivalent to 71427, 43362 motor is 30% lighter. This is generally an advantage, except when the motor is ud as a counterweight, or to balance the structure, for example in COG-shifting walkers.

No-load characteristics

Test conditions: motor is powered by a variable, regulated power supply. An ammeter measures current flowing through the motor, a voltmeter monitors tension across. The rotation speed is measured by a RCX equipped with a light nsor, looking at an half-whit

e/half black cylinder.

9 V supply	2838	2986	71427	43362	5292	47154	NXT
Rotation speed (rotations per minute)	4100 rpm	35 rpm	360 rpm	340 rpm	1300 rpm	460 rpm	170 rpm
No-load current	35 mA	6 mA	3.5 mA	9 mA	160 mA	31 mA	60 mA

43362 has a higher no-load current than 71427, probably caud by higher internal frictio

n. 47154 has a fairly high no-load current, becau of its 5-stages gear reduction. But it us big-tooth gears in the last stages, probably much more sturdy that the 2-stages, thin-tooth 71427/43362 internal gearing. The 5292 also exhibit very high no-load current, here again caud by internal friction. This explains also the break in its speed/voltage curve.

As is usual for DC motors, rotation speed is proportionnal to voltage applied to them, this can be en on graphs below. No-load current depends little on voltage.

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