Just curious!
Just curious!
Yes 
.
Just curious!
Yes
Thanks Tom.
Do you recall what the relative difference was, and if the shapes of the drag vs yaw curves were the same?
or better yet, can you post or pm me the data?
I don’t know about any numbers but I’ve always heard that a 700c disc wheel is faster than a 650 disc simply because it’s bigger. Much the same way a big sail will be faster than a small one.
I’m all in for 700c wheels so I hope that’s right.
I don’t have a direct answer to your question but remember, and Tom A. may have been alluding to this in his rather short response- aerodynamics of the wheel are only one metric to measure performance. Wheel weight, rolling resistance, etc. are additional factors.
One thing I think people may forget when they evaluate wheels is that, while a certain wheel may test well at 25 M.P.H. from an aerodynamic perspective it may not have the same level of performance relative to other options when you are grinding up the toughest climb on the bike course at only 11 M.P.H. where aerodyanmics are not nearly as much a factor as other mechanical issues.
-Just a thought- sorry to derail.
Just curious!
Yes
Thanks Tom.
Do you recall what the relative difference was, and if the shapes of the drag vs yaw curves were the same?
or better yet, can you post or pm me the data?
I knew that would be the next question 
This is from some Kyle testing as reported in Cycling Science. Zero yaw…sorry, I don’t have anything from non-zero yaws.
BTW, that “Trispoke” listed under “3 and 4 spokes” is the TriSpoke brand trispoke I was running up until getting a Jet90 last year…
Cool so it appears there is a consistent drag advantage, seeing yaw sweeps would be fascinating though.
Cool so it appears there is a consistent drag advantage, seeing yaw sweeps would be fascinating though.
Hmmmm^TM…I’m not sure if there’s enough “apples to apples” comparisons in that chart to draw that conclusion…
two discs and one spoked wheel right?
three is a huge dataset by ST standards!
Cool so it appears there is a consistent drag advantage, seeing yaw sweeps would be fascinating though.
Hmmmm^TM…I’m not sure if there’s enough “apples to apples” comparisons in that chart to draw that conclusion…
This particular data set points towards an advantage for 650c. However, as Tom states, it is far from conclusive.
im not starting a which is superior debate
just curious about drag
relax! =)
This particular data set points towards an advantage for 650c. However, as Tom states, it is far from conclusive.
AFAIK, it’s a wash. Any lower drag from 650 would be compensated by the taller head tube on the 650 frame.
AFAIK, it’s a wash. Any lower drag from 650 would be compensated by the taller head tube on the 650 frame.
but the fork is shorter!
but rolling resistance is worse!
but weight is lower!
but moment of intertia is worse!
this is why im not starting this debate, lol
this is why im not starting this debate, lol
Too late…
Your first question started it, and was part of the reason for my first answer