HiI am looking for a motor to raise and lower a

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1

Hi

I am looking for a motor to raise and lower a model hot air balloon. It weighs just under 1kg and I dont wish it to go up and down too fast.

I was looking at your Cytron 12V 17RPM 194.4oz-in Spur Gearmotor

Could you possibly advise me if this would be the best fit motor for the job.

thanks

Tony

Submitted from: https://www.robotshop.com/uk/compare-dc-motors.html

2

Hi,

From what I see, the Cytron 12V 17RPM has a torque of 194.4oz-in which is around 2Kg/cm.
Depending on the mechanism you will use to ,move the balloon up and down, it should do the job.

Here is a good way to transfer the RPM of a motor into the linear speed of an object: https://sciencing.com/convert-rpm-linear-speed-8232280.html

If you have a sketch of your project, it could also help me to understand your idea.

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3

Hi pjutras

Thanks very much for your advice. I attach a sketch of what i was thinking and hopefully the motor will have enough torque to take the weight overcome the friction of the fishing line passing through the eye loops

My only concern is wiring the reverse polarity switch board with the motor and the power supply as this is all new to me

thanks

h%20Ballon
h%20Ballon480Ă—640 53.8 KB
[quote=“Tonyca, post:1, topic:57687, full:true”]
Hi

I am looking for a motor to raise and lower a model hot air balloon. It weighs just under 1kg and I dont wish it to go up and down too fast.

I was looking at your Cytron 12V 17RPM 194.4oz-in Spur Gearmotor

Could you possibly advise me if this would be the best fit motor for the job.

thanks

Tony

Submitted from: https://www.robotshop.com/uk/compare-dc-motors.html
[/quote]

1 Like
4

I see, to drive the motor forward and backward without having to rewire the motor manually, you will need to use a H-bridge or a Motor Driver.
This H-Bridge would be enough to drive the motor: https://www.robotshop.com/en/dual-h-bridge-dc-motor-controller.html
Note that this product is compatible with Arduino, this would allow you to program the microcontroller to send a sequence to the motor driver.
Let’s say you could send a command to drive the motor forward for 10 sec and then wait for 10 sec. Finally, drive the motor backward for 10 sec.

Also, you would probably need a 6mm Hub or pulley to attach the wire to your motor’s shaft.

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5

Hi pjutras

Thank you for the information, what I have done is purchased a DC motor reverse polarity cyclic timer switch - see below.

The plan was to make this drive the motor at say 1 min intervals thus making it go up and down continuously.

Capture

I was hoping that would work

DC%20Motor%20reverse

tony

6

Hi Tony,

The product looks like a all-in-one solution and would probably work: https://www.ebay.com/itm/DC-MOTOR-REVERSE-POLARITY-CYCLIC-TIMER-SWITCH-TIME-REPEATER-700-300s-2A-12V-/281181038050

Note that the current limitation of the module is probably the only problem with it.
Make sure you don’t drive the motor at full capacity (2.6A stall torque) or you could damage the module.

Let me know how it goes.

1 Like