Track Gearing (Herne Hill Day)

any gearing suggestions for the track?

or as this is probably a competitive day(Sun 25th May, 1pm - LondonFgSs Spring Track Day Event at Herne Hill Velodrome) and most will keep their special gearing under wraps to blow away the competition a pointer as to whether my 48/18 is a good start (i'd be a track novice)

whats the theory, is it to reach your ultimate spinning speed and keep it up for the duration without it being too easy that your legs flap wildly?
or use brute force to push the tallest gearing you can at a reasonable spin?

J4mmd any gearing suggestions for the track?

or as this is probably a competitive day(Sun 25th May, 1pm - LondonFgSs Spring Track Day Event at Herne Hill Velodrome) and most will keep their special gearing under wraps to blow away the competition a pointer as to whether my **48/18 ** NO is a good start (i'd be a track novice)

whats the theory, is it to reach your ultimate spinning speed and keep it up for the duration without it being too easy that your legs flap wildly?
or use brute force to push the tallest gearing you can at a reasonable spin?

Your legs'll be going like the clappers - I'd go 50/16

81" for novices and if you're not fit
84" if reasonably fit and experienced....also intermediate riders if it is windy
88" entry level race gear for FIT riders or super-fit riders on a windy day
90.6" Race gear for very fit or experienced riders ....will be too high for anybody if windy.

above 90.6" will do you no favours, you'll get dropped after a few laps at race speed.

49x15 rocks.

[quote]winston 81" for novices and if you're not fit.[quote]

That's me at the moment. Hoping to be 'intermediate' and 'a bit fit' by May, so that I can move up to the dizzy heights of 87"...

ok, cheers.
for anyone who needs help finding out the right number of teeth, check out this gear chart.

I'd suggest just changing that 18 cog to a 16 to give 81".
As a 'novice' you'll find that plenty high enough, and maybe too high if it's windy.
I used 81 for pursuiting at HH when I was more than a 'novice' and it didn't let me down.
M

whats that gearing skullhead? good for over a ton i reckon

thanks everyone

props to haj for that one

Skullhead: thanks.

It looks to be something like 200*15 or something..

yeah, i reckon on changing my 18 to a 16 or possibly a 15. 48 up front. we'll see

Don't worry if you come up a few inches short, it's never bothered any of the girls I go out with you will just have to wok a little harder.

TheBrick(Tommy) Don't worry if you come up a few inches short, it's never bothered any of the girls I go out with you will just have to wok a little harder.

i think that chart is not for 700c wheels

click on me for a good gear calculator

jonny yeah, i reckon on changing my 18 to a 16 or possibly a 15. 48 up front. we'll see

lookin good in the photo above ;)

yeah dogs, thanks for lending me one of your shirts ;)

jonny yeah dogs, thanks for lending me one of your shirts ;)

no problem kryten :p

chris crash i think that chart is not for 700c wheels

It is for 700c. Looks like it is doing (chainring/sprocket)*27 which is close enough

Momentum [quote]chris crash i think that chart is not for 700c wheels

It is for 700c. Looks like it is doing (chainring/sprocket)*27 which is close enough[/quote]

Exactly. Which is why it's not for 700c. If I remember correctly, 49x15 is close to 85in on 700c not 88in (which would be for 27in wheels).

On street gearing it's close enough. On the track, a difference of 3 inches per revolution could be the difference of first winner or first loser.

http://www.sheldonbrown.com/gears/

Here you can choose between 27in and 700c. Apparently Sheldon thought that even tire size mattered!

I'm with jonny - 48/18 for the road, tossing up between a 15 or 16 for the track. 14 is way out...

trampsparadise [quote]Momentum [quote]chris crash i think that chart is not for 700c wheels

It is for 700c. Looks like it is doing (chainring/sprocket)*27 which is close enough[/quote]

Exactly. Which is why it's not for 700c. If I remember correctly, 49x15 is close to 85in on 700c not 88in (which would be for 27in wheels).

On street gearing it's close enough. On the track, a difference of 3 inches per revolution could be the difference of first winner or first loser.[/quote]

yeah i was sure 47x16 was 75 not 77, and tyre size does effect rolling resistance, and aerodynamics, 23c or even slimmer