brushless rusty speed testing

[t-maxxracer32]

hey guys was doing some speed runs with my rusty the last couple days and here are the 2 diff tests i did

3s a123- 38.5 mph
12 cell rs gp3300- 43.5 mph

then the motor broke..... was going to try diff gearing and what not.... then the motor broke.... going to send it in to castle tomorow.

was wondering how much of a diff gearing would make for top speed?


thanks!