Non-FIRST Motor Suggestions?

[pilleya]

Originally Posted by page2067

1st overall gear ratio - from CIMs to 8 inch wheels - recommend you find a link (search CD) for the JVN calculator - nice spreadsheet helps you get reasonable on what ratio will drive you and not overload.

I would seriously suggest using the JVN calc, it's really helpful and pretty easy to use. It will save you a lot of headaches, time and potentially a lot of money later.

https://www.chiefdelphi.com/media/papers/3188?langid=2

[ctt956]

One question about the JVN calc; the "Driving Gear" and "Driven Gear" fields take a custom value, but it's not clear what the number that goes into them is. I'm assuming it's asking for gear teeth, or is it something else? I'm guessing the driving gear is the one connected to the motor's output shaft, and the driven gear is the one driven by that gear?

[pilleya]

Originally Posted by ctt956

One question about the JVN calc; the "Driving Gear" and "Driven Gear" fields take a custom value, but it's not clear what the number that goes into them is. I'm assuming it's asking for gear teeth, or is it something else? I'm guessing the driving gear is the one connected to the motor's output shaft, and the driven gear is the one driven by that gear?

Yes it is the number of gear-teeth, the same applies for the number of teeth on sprockets or belts. You can also just type in the reduction that you want say 1:3 etc.

Some gearboxes have more than one stage, but take it as the driving gear is before the reduction and the driven gear is after, so the driven gear should be rotating slower than the driving gear.

Yes the driving gear in a single stage gearboxes is the gear on the motor's output shaft

Here is an example of what it should look like for the reduction stages of a 10.71:1 Toughbox Mini or Micro(the stock ratio):