Aero Garbage Wind Resistant a lie

[Russell]

Tell me you don’t understand aerodynamics, without telling me you don’t understand aerodynamics.

 

[ChromeChainstay]

omg,that downrube and headtube is so small, the massive girth of it is so fast, must be that wing technology, nope. same size as an un aerdynamic waterbottle

 

[novocaine]

Tell me you don’t understand aerodynamics, without telling me you don’t understand aerodynamics.

To misquote Feinmann "If you think you understand aerodynamics, you don't understand aerodynamics"

 

[bikeworkshop]

Frontal surface area is significant
Then there's the Cd:

Hours of fun

 

[ChromeChainstay]

and now i debunk myself, oh the shame of my steeds

Frontal surface area is significant
Then there's the Cd:
View attachment 979825
Hours of fun

this would make an excellent tattoo

 

[jim haseltine]

As there are no vertical tubes on a diamond frame (Baines Gate and similar designs excepted), they all present as an ellipse to the airflow.

 

[Frankenorange]

And aero performance is significant above 24mph.

Not retrobike factors.

Akshuuuallly....i have always been under the impression that somewhere around 14-15mph was a point where things really start to matter. It matters below that but at some point it really starts to with the whole speed and air resistance math.
Maybe i am talking out of my @rse , but come 14-15mph i think a considerable amount of the riders power is already employed in just overcoming wind resistance and drag.

@novocaine ?

 

[ChromeChainstay]

Speaking of aero…

View attachment 979804

View attachment 979805

the movie Aliens'

 

[bikeworkshop]

Akshuuuallly....i have always been under the impression that somewhere around 14-15mph was a point where things really start to matter. It matters below that but at some point it really starts to with the whole speed and air resistance math.
Maybe i am talking out of my @rse , but come 14-15mph i think a considerable amount of the riders power is already employed in just overcoming wind resistance and drag.

@novocaine ?

The bulk of wind resistance is the rider*

At 15mph I think the difference a frame style can make is around 0.1mph

https://ridefar.info/bike/cycling-speed/air-resistance-bike/

In retrobike terms, I think we do 2 significant figures on velocity

The 24mph difference might be getting there!

Now time triallists deffo do 3 significant figures on speed...
And race- across-america types,
so it matters to them,
hence the marketing push of aero shapes.

Id say as a rider I can notice a 1% improvement.

Less than that it's in the mind
- not that that's not important

*changing your body position will make a much greater difference than a blade- shaped frame.

Unless your nose is already on your 600 front wheel

 

[benjabbi]

I have a friend who broke the national 10 mile road bike TT record that had stood for 35 years. (18:41 for the record)
Having seen the prep that went into it, aero and position were at least as important as his fitness in the outcome.