[Mr. B]

In the link it says the ratio for a 775pro with this gearbox is 12:29. Is that correct ratio or would we have to change the gears, and if the latter, where would I get the gears and which ones?

(I am really sorry if this is a stupid question. We are a rookie team trying to figure out what we are doing! haha)

The 12 and 29 are the number of teeth on the gears
so, 29/12=2.41