Bicycle Aerodynamics for those interested.

[Stan Back]

A2 --

Please address the spinning wheel situation -- a lot of us are curious.

Stan

[Seldom Seen Slim]

In case you didn't understand Stan Back's query -- the "spinning wheel" situation is our thoughts that there might be turbulence caused by the spinning wheel (mostly front).  We've got some rules about the size and shape of the front fender -- so the question is mostly one of whether we should use a custom front fender to achieve best aero efficiency, and, if so -- what aspects should we try to design in to maximize the gain in efficiency.

Thanks -- and Stan, maybe he knows what you meant -- but I thought that as the head handlebar holder of this site I should make it clearer (I hope I did so!) to be sure that the casual reader/lurker/surfer would know whatcher talkin' 'bout.

[Stan Back]

Actually Seldom, I was just reinforcing Rex's inquiry on another thread concerning Lakesters (and Roadsters).  See what your biker mentality got you.

[Seldom Seen Slim]

Yeah, maybe -- but I've got the biker babe to go with it, so I'll take the abuse -- as long as I get to keep Nancy.

And now I guess I've got to go through the other topics and look for Rex's writings.  But - Maybe A2 didn't see that post.  Yeah, that'll be my excuse for posting as I did -- I wanted to save A2 all the work of clicking around.

Yeah.

(about two minutes later)

Dang -- I found Rex's comments, already addressed to the A2 folks.  There goes my caveat.

[joea]

the wheels the wheels....ah yes....

there are some fairly complicated (relative term) interactions
going on at the back of the wheels where the air is trying to come
out of wheel...around wheel...and its interaction with components
in close proximity..ie fairing........of which we would need rolling
surface...and spinning wheels...........

Pork Pie.....where are ya........he has the hands on knowledge base
with this (in some cases) critical area of aero....

Joe

[Larry Forstall]

Bike is at the bodyshop as we speak getting aero improvements as Dave and the tunnel suggested. Next to the chassis shop to implement the balance solutions. Then to the software additions. Things sure have changed in the 30+ years from when I first started doing this.  Oh and doesn't every rider have beans for breakfast before record runs? Oops just gave away a speed secret. :lol:

[Sumner]

Actually Seldom, I was just reinforcing Rex's inquiry on another thread concerning Lakesters (and Roadsters).  See what your biker mentality got you.

Yes I sure would like to know the typical Cd of an open wheel/tire like say a 26 inch good year.  I've heard all different figures and the one that sticks in my head, maybe not good, is about .40.

Thanks,

Sum

[WildBro]

Thanks for posting the article A2.  I'll be going over it a few times to see if I can get some inspiration for my over sized bicycle.


I am pedaling as fast as I can 
Bill

[Dean Los Angeles]

Rollie Free:

[fredvance]

Ilove it. Use to do that on my Triumph, no speedo.

[John Noonan]

Rollie Free:

Dean,

That picture looks familiar.




J

[John Noonan]

[jl222]

 Freud can make those guys look like wimps
Come on Freud what you waiting for?

           JL222

[1212FBGS]

do ya really wanna see Freud in his bathing suit?
kent

[John Noonan]

Kent,

Not after the last time...