Cadence and speed calculation

[rustychisel]

Help needed from the mathematically inclined, please.

Fixed gear, 48x18 on 700c wheels, speed attained was 56.7kmh.
Can anyone tell me what cadence that equates to?

[rkelsen]

2.1m (approx. 700c rollout) x 48/18 = 5.6m per 'rev'

56,700 metres/hour = 945 m/minute

945/5.6 = 169 rpm.

[brauluver]

Help needed from the mathematically inclined, please.

Fixed gear, 48x18 on 700c wheels, speed attained was 56.7kmh.
Can anyone tell me what cadence that equates to?

I'll post you link when I get home that has it all covered.

[rustychisel]

thanks, hmmm 169rpm seems much higher over sustained effort. Thought I was nearer the 200.

I was over 55kmh for quite some time, maybe 250m, going down the hill north from the Morialta Falls main gates past the Black Hill Conservation Park, on the fixed, of course, Saturday morning.

[brauluver]

plug the permutations into this http://software.bareknucklebrigade.com/

[boyracer]

thanks, hmmm 169rpm seems much higher over sustained effort. Thought I was nearer the 200.

I was over 55kmh for quite some time, maybe 250m, going down the hill north from the Morialta Falls main gates past the Black Hill Conservation Park, on the fixed, of course, Saturday morning.

so will we be seeing you at friday roller racing then?

[rustychisel]

where? when?

You callin' me out?

[yehuwdiy]

Holy bat cave Rustychisel, I think my knees just blew out reading that! You must have rotary legs to spin at those kinds of speeds

##Edited, thanks!

[brauluver]

Holy bat cave Rustychisel, I think my knees just blew out reading that! You must have rotary legs to spin at those kinds of speeds

Fixed that for ya.

[boyracer]

Edwardstown velodrome clubrooms friday evening. pacc.org.au
I'm pretty keen and think a few tuesday riders will be on it.

[rustychisel]

Holy bat cave Rustychisel, I think my knees just blew out reading that! You must have rotary legs to spin at those kinds of speeds

##Edited, thanks!

nay, knees blow out at the other end of the spectrum, doing 8kmh and blowing snot trying to work the same gear through the Montacute Road valley.

[brauluver]

Edwardstown velodrome clubrooms friday evening. pacc.org.au
I'm pretty keen and think a few tuesday riders will be on it.

Pity about the $70 odd buck$ to enter

[boyracer]

killed it for a lot of us....