Low Inertia Solar Motor - 1820 RPM

Stock code: 2546

Pricing:Ex VATInc VAT
1+ £1.40
(excl. VAT)
(inc. VAT)
10+ £1.25 £1.50
100+ £1.15 £1.38
In stock


Height 12.8mm.
Diameter 24.4mm.
Axle Length 10.55mm.
Axle Diameter 2mm.
Weight 22g.
Operating Voltage 0.5V - 3V.
Rated Voltage 2V.
Starting Voltage 0.5V.
Starting Speed 1000RPM.
Starting Current 30mA.
Voltage at Maximum Efficiency 2.0V.

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  • If you live on the UK mainland and don't have any large materials or lithium batteries in your order it will cost £3.95 (£4.74 including VAT) if you spend less than £40 (£48 including VAT).
  • If you spend between £40 and £200 (£48 - £240.00 including VAT, excluding large materials or lithium batteries) delivery is free to most locations, £12 (£14.40 including VAT, excluding large materials or lithium batteries) to Northern Ireland and £15 (£18.00 including VAT, excluding large materials or lithium batteries) to UK remote locations. For a list of postcodes that will be charged the remote location rate: remote area list.
  • If you spend over £200 (£240.00 including VAT, excluding large materials or lithium batteries) delivery is free within the UK.

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  • If you would like to collect your order, or use your own courier then there is an option you can select during checkout. We do not charge a packaging or handling fee for this service, and you will receive an email when your order has been processed, you can collect half an hour after receipt of this email.

Further Information

How would I mount this? Thank you!
Asked by: Bradley Michael Collins

Hi Bradley, We do stock a motor mounting clip, https://kitronik.co.uk/products/2505-plastic-motor-mounting-clips-pack-of-10 although it is designed to hold slightly larger motor it does hold the motor nice and tightly, alternatively the enclosure could be designed so that it holds the motor in place.

Answered by: Michael Lockhart

Does this motor have a 2mm shaft?
Asked by: Danny

Thank you for your email, this motor does indeed come with a 2mm Diameter shaft

Answered by: Cullen Lewis

Trying to make a model wind turbine, that will power an led in class, which motors would you suggest, as I can't get the little motors we have to work
Asked by: Duncan
Hi Duncan, I would recommend the two low inertia solar motors, preferably the 1820 RPM one as that should be the one that will work the easiest. Best Regards Cullen
Answered by: Cullen Lewis

Could I attach a wheel directly to the motor
Asked by: Joe
HI Joe, In theory yes provided you had a wheel that fitted the spindle of the motor. best Regards Cullen Lewis
Answered by: Cullen Lewis

If I used this as a generator, would I be able to measure current or voltage produced with a multimeter?
Asked by: Graeme Gardiner
Hi Graeme, Yes this should be suitable, attached the multi meter to the wires, set it to measure either current or voltage and spin the motor (or use a fan blade and blow on the fan). Similar to this, https://www.kitronik.co.uk/blog/experiment-7-wind-power
Answered by: Michael Lockhart

Hi, if I would like to power this motor directly from the microbit, is that possible or will there be to much current from one pin and damage the microbit. Could I connect black to ground and red to a GPIO pin and for example set digital pin 1 to 1 to make it start?
Asked by: Magnus
Thank you for your question, it would not be possible I am afraid, it is not the Voltage that would be a problem but the current draw as the micro:bit is not able to output enough current from a pin to supply even this low power motor. You would need a separate power source. Best Regards Cullen
Answered by: Cullen Lewis

I would like to use this motor in combination with a raspberry pi. More specifically I want to adjust the speed of the motor using pulse width modulation (PWM). To do this I need to know the value for the "herz" parameter for the PWM. My question is thus: What is the range of usable "herz" values for this motor? Thanks in advance for any help!
Asked by: MuadDev
Hi MuadDev, It is possible to calculate the hertz from the RPM by dividing the RPM by 60. The starting speed for the motor is 1000RPM so 16.66 hertz and the Speed at Maximum Efficiency is 2000RPM so 33.33 hertz. I hope this helps.
Answered by: Michael Lockhart

What is the torque of this motor? Thanks :)
Asked by: Samuel
Hi Samuel, The motor has a torque of 3.03 g.cm, when powered at 2V, and draws 62mA which is the max efficiency of the motor. The torque at the point the motor stalls is 12g.cm.
Answered by: Michael Lockhart

What would be the speeds of the kitronik-05-3v-small-1820-rpm-solar-motor at 1 V, 1.5 V, 2 V and 2.5 V?
Asked by: Sanjay Nagarajan

Hello Sanjay, The motor has a starting speed of 1000 RPM at a 0.5V supply, and spins up to 1820RPM at 3V. However we don’t have any data to say what the motor will spin at when supplied with the voltages you have stated. The speed should however progressively increase as the voltage is increased.

Answered by: Michael Lockhart

Looking to make Brushbots with Yr5, need 3v buzzers or vibration motors to power a tooth brush head. Would this cause enough of a vibration to move a tooth brush head and would it sit on it? Thanks Clare
Asked by: Clare Brady

This motor spins at 1820 revolutions per minute, so it might not be the best motor for what you are wanting to use. We do a small 3V vibrating motor, these motors are often used for silent alert functions in mobile phones, the product code is 2541

Answered by: Michael Lockhart

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