Turbo!!!!!
moonshine
Posts: 335
in General Chat
Good grief I thought you were all kidding re the sweat thing my ears are full of the stuff and I've dripped through the house - I'm supposed to be a lady and glow
So daft quaetion coming up only just sneaked this past the HAT officer and so don't have a computer for the bike rear wheel that will do cadence etc so does anyone know how to work out distance covered by rpm and time spent - yes I know I'm deeply sad wanting to know but I like my little charts to be complete
So daft quaetion coming up only just sneaked this past the HAT officer and so don't have a computer for the bike rear wheel that will do cadence etc so does anyone know how to work out distance covered by rpm and time spent - yes I know I'm deeply sad wanting to know but I like my little charts to be complete
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Formula should be A x ave RPM x time in minutes remember to divide back down to get it in metres/ km.
I was going to delve into the theory of vector speed but I can't be arsed.
tyre is a 700x23 so does that make the wheel size 70cm?
Nah - I tink the 700 is the diameter, although it can vary between manufacturers and depends on the tire. You'll need to measure around the outside to get an accurate measure.
rpm= 100
time= 15
and divide by?
=
basically
pedal revs x front cog teeth/back cog teeth = wheel revs per minute
wheel revs per minute x wheel circumference in metres = metres per minute
So let's assume (!!) that you're on 52 at the front and 19 (??) at the back.
so that will be:
100 x 52 / 19 = 273 revs of the rear wheel per min
273 x 1.95m = 534m per minute so you're travelling 32kmh and covering 8km in your 15 mins.
hope this helps.