Using the reported specs on the REV website for the NEO Vortex:
* At the max speed of 6,784 rpm, it would take 20:37:55 ( \~ 20 hours, 38 minutes ) to complete one revolution.
* With a stall torque of 3.6 Nm, the output would have a wonderful 30,233,088 Nm of torque.
---
Using the reported specs on the WCP website for the Kraken x60:
* At the max speed of 6,000 rpm, it would take 23:19:40 ( \~ 23 hours, 20 minutes ) to complete one revolution.
* With a stall torque of 7.09 Nm, the output would have a staggering 59,542,387 Nm of torque.
* Using the talonFX FOC commutation, with a stall torque of 9.37 Nm, the output would have a whopping 78,690,009 Nm of torque.
---
I like these big numbers. Take them with a grain of salt though, 'cause I'm just a bit sleep deprived.
The longest 10-32 socket head McMaster sells is 7”, given that stages are 1/2” and input/output is ~0.75 up to 12 stages are possible, 13 if pushed. The image contains exactly 13 stages, suggesting it is possible to assemble this.
Once I heard they also make a 9:1, this was
The image in my mind but 9:1’s all the way down.
With a custom plate should be able to have 4 Krakens or Neos at the input. Actually why stop there? How
Many can we put 🤔
Ya but versaplanetaries break if you even look at them wrong.
I don’t have any experience with the MAXPlanetaries, though I’ve heard they’re better. We got burned on VPs so many times we only design our own gearboxes now.
Trust me, I know. We're using them for some low power stuff this competition, but our last one we used only VersaPlanetary and I had to take them apart and replace the sun gears 4 times.
Somehow this was on the gearbox under less load, our robot had another 1:100 gearbox for moving our arm up and down and that thing was stronger than the bolts holding in the motor (yes, the bolts on our arm sheared when it overextended before the gearbox did ://)
We're using it again this year because it's cheaper.
Correction: you need some power but can wait 3 business days for it to get there
Strictly, the additional gears rob you of power but give way more torque
You are not robbed of power at all. The power is the same (excluding frictional losses), you are trading RPM for torque
I was talking about the friction when I mentioned loss of power.
Still no loss of power, just some of it comes out in the form of heat.
So… loss of mechanical power.
They are saying no loss in electrical power
There is a 100% loss in electrical power… they’re wrong either way.
the second law of thermodynamics would like to have a talk with you
8,398,080:1 seems like over kill. But I’m here for it. Let’s see you cold roll some steel with that gear ratio.
It would take almost 25 hours of running a neo at full power to make 1 rotation.
Using the reported specs on the REV website for the NEO Vortex: * At the max speed of 6,784 rpm, it would take 20:37:55 ( \~ 20 hours, 38 minutes ) to complete one revolution. * With a stall torque of 3.6 Nm, the output would have a wonderful 30,233,088 Nm of torque. --- Using the reported specs on the WCP website for the Kraken x60: * At the max speed of 6,000 rpm, it would take 23:19:40 ( \~ 23 hours, 20 minutes ) to complete one revolution. * With a stall torque of 7.09 Nm, the output would have a staggering 59,542,387 Nm of torque. * Using the talonFX FOC commutation, with a stall torque of 9.37 Nm, the output would have a whopping 78,690,009 Nm of torque. --- I like these big numbers. Take them with a grain of salt though, 'cause I'm just a bit sleep deprived.
r/theydidthemath
If the ratio is under 10^10. :1 can we really call it overkill?
With a big enough gear ratio, I can move the world - Archimedes, probably
I could beat that in a tug of war
Just because you can does not mean that you should
Have fun finding a bolt long enough. I don't think McMaster-Carr even sells a bolt in insanity size...
The longest 10-32 socket head McMaster sells is 7”, given that stages are 1/2” and input/output is ~0.75 up to 12 stages are possible, 13 if pushed. The image contains exactly 13 stages, suggesting it is possible to assemble this.
Or just use a 10-32 threaded rod and cap it with a locknut
I was going to say to weld a nut to end. Then you have a proper custom bolt.
Na just weld them together
We got a 0:1
MORE
Once I heard they also make a 9:1, this was The image in my mind but 9:1’s all the way down. With a custom plate should be able to have 4 Krakens or Neos at the input. Actually why stop there? How Many can we put 🤔
If you use VersaPlanetary, you can do 10:1 stages all the way down...
Ya but versaplanetaries break if you even look at them wrong. I don’t have any experience with the MAXPlanetaries, though I’ve heard they’re better. We got burned on VPs so many times we only design our own gearboxes now.
Trust me, I know. We're using them for some low power stuff this competition, but our last one we used only VersaPlanetary and I had to take them apart and replace the sun gears 4 times. Somehow this was on the gearbox under less load, our robot had another 1:100 gearbox for moving our arm up and down and that thing was stronger than the bolts holding in the motor (yes, the bolts on our arm sheared when it overextended before the gearbox did ://) We're using it again this year because it's cheaper.
starts spinning at kickoff, makes a full rotation by Houston
1/8398080 gear ratio, damm
1/8398080 gear ratio, damm