Gearing on 7.5t Brushless Motor

[carlin]

Hi Guys,

I'm not the best working these calc out getting it over my head.

I'm running RB5 SP2 dropped a SP V3 7.5t motor in.

Now I was running a 8.5t X12 before with a 26t pinion was perfect for indoors.

So I have gone a hihger gearing think I may have gone the wrong way but the motor seems bang on but only time would tell or some advise be great.

At present I have put 28t pinion on the car.

This is what I'm running gearing wise

78t spur 48Dp SP V3 7.5t with 28t pinion

Any advice be great

Thanks