Hello, my name is David, I’m an artist whom tattoos in leather.
I have some questions and I hope that you can and will help me,
even though these are not relevant with robots, but I don’t know where else to ask them.
I’m tweaking a tattoo machine. Motor width: max 24mm. Lenght approx: 32mm (ex shaft/axle)
Q1: If a machine works 8000 rpm @ 12volts, it would be +/- 4000 rpm @ 6volts. But the needle hits softer/less torque with less rpm, I think?
If the wattage of the motor was higher, say: 10 watt instead of 3W. would the needle hit harder on 4000 rpm @ 6volts?
Q2: Or should I change the voltage on the motor? Use a 6volts, 9volts or a 18 volts motor? Which would give a harder hit/bigger torque at 4000rpm?
Q3: Which motor would you recommend? Well I hope you can help in my quest and hope to hear from you soon. With kind regards,
David.
Hi David,
Here are the answers to your questions:
Q1: Yes, the motor speed is proportional to the voltage, at half the voltage it should run at about half the speed.
Yes, since the power of your motor is related to the voltage and the current, a higher wattage at the same voltage will result in higher torque.
Q2: The voltage itself will only affect the speed, the current needs to be increased in order to increase the torque.
Q3: We cannot really suggest anything here without knowing exactly what you need in terms of dimensions, nominal voltage, torque and RPM, if you give us these informations we will be able to see if we have a suitable motor for you.
Sincerely,
Many thanks for the answers Robert. It’s becoming much clearer now for me.
@q2 Is it, when I use a power-supply of 3 amp I have more current and therefore more torque, then when I use a power supply of 1.5 amp?
Or is this another thing altogether?( please don’t forget English is not my native tongue and I’m relatively new at this stuff.)
@ Q3
Max width= 24mm,
length about 30mm(without shaft/axle),
nominal voltage=12 volt,
no load speed not higher then 8000, I think.
Torque as high as possible 
I’ve had somebody telling me a portescap Athlonix [highlight=#ffffff] [font=Lato, Arial]24DCT 32P2 215P 2[/font][/highlight][font=Lato, Arial][highlight=#efefef][highlight=#ffffff]has a torque up to 14.81.[/highlight]
[size=2][highlight=#ffffff]I don’t know if that’s high or not, probably much higher then what I’ve got. An unidentified Chinese motor.(
Also probably with low watts. Still waiting for my hex keys to arrive so I can the motor out and then maybe have the exact specs.
Again thanks for the help I’m a couple of steps closer to home.)
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