Gear Ratio for Track

It is also said that a smaller cog is better than a larger chainring, it gives faster acceleration, Just something to bare in mind when choosing ratios

my best sprint time was like 13.5 or something for 200 (53/16) so 33.139 average mph so about 140 rpm?

No, about 128rpm. Keep in mind that decent sprinters will be more in the 150rpm ballpark.

so maybe should i try and get up to 160 on a lighter gear?

It is also said that a smaller cog is better than a larger chainring, it gives faster acceleration, Just something to bare in mind when choosing ratios

How much difference does this actually make? Would I get a 48/15 rolling faster from a standing start than a 51/16 even though they're effectively the same gear?

How many people can spin over 200rpm?

So 90 Gear Inches for Track is a decent size. Or would 86 be a little light for Herne Hill. Would like to try and give a go for fun. Never attempted before but why the hell not.

^come next saturday and then sign up for the forum track day! ;)

I think 86 fine for now and learn to spin fast and then gear up 90 for races

I am down after Ramadan. Still fasting right now so will pass this time but count me in later on.

No worries, come down for the 10th august, still have plenty of time to do your induction and still make it to a few basic session before the big day! =)

Designed a Track Gear Ratio Calculator. Have a try.
https://www.dropbox.com/s/ll3sn1vwfhw8clh/Track%20Calculator%20Complete.xlsx

Just as a side note. 48x15 is a little too spinny- even for my little legs.