High speed torque

[JFettig]

Hey guys, I was messing with my new and old steppers, My new ones are rated at 4.3v and my old ones are around 2.37v I think if I remember correctly. I hooked them up to the same voltage and amperage and I can get higher speeds out of the 2.37v motors, I know this is because of the voltage is multiplied many times more. If I were to double the voltage of my power supply, would I get about or possibly more torque out of the higher voltage steppers?
I dont have my older steppers off my mill, but I can rapid at 60ipm or 10000hz, and if I try that at the same voltage on the new steppers it misses steps easily. I still can give the new steppers almost another amp of current so I know that will help. But I am thinking about order another 2 transformers to increase the voltage 2x(need two because of the size of the one I have in mind)

Its been a while cince I have looked at the gecko manual, I think there is a little info in there about it.

Jon

[ger21]

Speed is proportional to voltage. Double the voltage and double the speed. With all things being equal. Are the 2 different motors the same torque?

[BigDaddyG]

Hello,
Your holding Touque rating (ie. oz/in Rating) is based on per amp. So going from 2.3 to 4.3 will just short of Double your Torque rating, provided your board and power supply are up to the challenge.
Glen

[ger21]

Glen, he's talking volts, not amps. But yes, amps are proportional to torque, as long as you don't exceed the motors rated torque.

[JFettig]

The step-syn motors are slightly larger, they will take about half an amp more, the voltage is just higher. I dont know what the specs are on the step-syn motors though, I got a few comming though

but so basicly the speed is dependant on the voltage multiplied by the motor voltage.
This is what I was pretty sure of, I just wanted to make sure and all.

Thanks
Jon

[BigDaddyG]

Opps,
It's early! Not enough coffee in me yet!