RE: Axial .28 or .32
I've also got the 3spd. With the Axial .28 and a 3spd with "normal" size Savage tires (Dirt Bonz or similarly sized), 19/47 is about as tall as I'd go.....you could try a 20T CB, but that's getting a little steep with a 3spd and it's 10% taller 3rd gear. I'd have no problems running a 20/47 with either Axial and a 2spd though.[8D]
17/47= 2.76
18/47= 2.61
19/47= 2.47
20/47= 2.35
Stock .21 Savage gearing is 14/52 right? That's 3.71. As you can see, stepping up to a hotter engine will require a drastic cut in gearing.