XRAY - Model racing cars

Hello,

I have problems to decide the Gear Ratio on my T4.
I have a Speed Passion 10,5R Motor and i would like to drive on a little Indoor Track, is not a High Speed Track lot of Corners.
Witch Gear Ratio i can use with the Orginal 84 Gear ?
And the other one is the Outdoor track this is a nice Track a lot of Corners and
a straight of 20-30 Meter.
Some years ago i have use a 5.00 Final Gear Ratio but my Motor have 2 times burnt. But this Car was a Team Magic E4JS.
Now i have buy a T4 and i need help for the Gear Ratio.

Thank you !

Are you running timing on the speed control or is this blinky racing?

Im prefer to run in blinky mode. But some time i would like to try timing.

Maybe gear around 5.5 on the small track for 10.5 blinky.