I wanted to know what gearing you guys would recommend. I've ordered a 3680 1600kv ( but the order has been delayed ) and plan to run 6s in a 3905. Still the stock spur so what pinion do i start with?
With the 80mm you could actually go to Mod1 Revo gearing as long as you get the spacing right. A 30T pinion and 54T spur should give you around 65 MPH but that's a huge pinion.
All I ever wanted was an honest weeks pay for an honest days work.
If you keep the 32p gears, yes. What is the minimum distance between the motor shaft and the input shaft? If you can get that measurement you can use BrianG's gear diameter calc to figure out what Mod1 gears you can fit. You could use a smaller pinion with a Jato spur if you wanted, but you'll get more speed and tougher gears with Mod1.
All I ever wanted was an honest weeks pay for an honest days work.