It really depends on what race you're in. Yes around 90 is an ideal race gear for bunch races in track league/omniums. In training sprinters will be swapping gearing depending on their program, I used anything from 84 to 107 last season. Some people also like to think the wind makes a difference, but it's coming in one direction and you are riding an oval, (usually on the back straight) so you are equally going to benefit from a tailwind as you will suffer from the headwind.
Another point to remember is that people consistently lie about their gearing, many claim to be using "86" or "88" but are in fact racing on 90-92.
It really depends on what race you're in. Yes around 90 is an ideal race gear for bunch races in track league/omniums. In training sprinters will be swapping gearing depending on their program, I used anything from 84 to 107 last season. Some people also like to think the wind makes a difference, but it's coming in one direction and you are riding an oval, (usually on the back straight) so you are equally going to benefit from a tailwind as you will suffer from the headwind.
Another point to remember is that people consistently lie about their gearing, many claim to be using "86" or "88" but are in fact racing on 90-92.