Big o 14.5 gearing

Figure it’s worth a shot to ask on here what’s a good gearing to start with in the 14.5 class at big o? This will be my first time here and have no clue where to start and won’t have enough practice time to figure it out and noticed this track looks much bigger than what I usually run on. My rpms need to be in the 9-9500 range. On a short to medium track I’m turning just under 9200 with a 13/66. Figure I try a 13/63 to start with, I think a 62 or 61 would be better to start with but I don’t have those gears.
 
Figure it’s worth a shot to ask on here what’s a good gearing to start with in the 14.5 class at big o? This will be my first time here and have no clue where to start and won’t have enough practice time to figure it out and noticed this track looks much bigger than what I usually run on. My rpms need to be in the 9-9500 range. On a short to medium track I’m turning just under 9200 with a 13/66. Figure I try a 13/63 to start with, I think a 62 or 61 would be better to start with but I don’t have those gears.
Try these math equations:

9200 × 9500 ÷ 5.07 = 4.90 ratio recommended you should run

So probably run a 14 69 gearing or a 13 64 gearing as suggested by the equation
 

flattop1

Dawg 89
Figure it’s worth a shot to ask on here what’s a good gearing to start with in the 14.5 class at big o? This will be my first time here and have no clue where to start and won’t have enough practice time to figure it out and noticed this track looks much bigger than what I usually run on. My rpms need to be in the 9-9500 range. On a short to medium track I’m turning just under 9200 with a 13/66. Figure I try a 13/63 to start with, I think a 62 or 61 would be better to start with but I don’t have those gears.
Did you race ?
If so what gear set did it end up on ?
 
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