Bicycle Aerodynamics for those interested.

[bvillercr]

I think Freud needed some duct tape.

[landsendlynda]

Great, I just lost 10,000 more brain cells....I couldn't afford that, ya know!!   

[Glen]

Wonder if he had a cell phone with him, 

[interested bystander]

Wuz gonna jealously compliment Freud on his generous endowment until I looked closer and saw it was the tailight hanging low under him!

[Stainless1]

Wuz gonna jealously compliment Freud on his generous endowment until I looked closer and saw it was the tailight hanging low under him!

IB, Freud told me he had to put a hole in the seat to keep from being blown off the bike at speed.... something about the faster he went the better it worked...   

[Freud]

Any old hole when you're in heat..........

FreuD

[saltwheels262]

i would like to mount a lsr type fender on conventional mc front end. what are pros and cons between fenders that only provide coverage forward of the fork tubes and those that cover both forward and rearward(within rules)? thanks.

franey

[Seldom Seen Slim]

I haven't yet done it -- but I'm told over and over that enclosing the front wheel as much as possible is good.  There's air being moved around by the rotating wheel, and since some of that air is being forced in the direction you're traveling (forwards) you've guaranteed yourself some excess drag and turbulence by having that dirty air there.  Cover the wheel as much as the rules will allow.

Then there's the difficulty that was presented by the rules -- stating that no streamlining is allowed in front of the front axle; and that the front fender may cover the top half of the front wheel (I generalize -- the rules are a little more specific).  The difficulty is/was that the front fender covering the wheel is de facto streamlining, but streamlining de jure describes the bodywork, nose piece, etc, and does not include the fender.  There was a whole heck of a lot of discussion on that -- and maybe a rule change, too, to clear up the cornfusion.

Anyway -- cover that front wheel!

[saltwheels262]

 am looking for a fender from different sources. might have a problem because of size of front end, and homemade isn't an option right now.
red wing front end sliders have inside width of 4.75" ; outside- 8.625" ; tire is a 110/70-17.
hope to come up w/ something.thanks again.

franey

[sabat]

In case you haven't seen these already;

http://www.airtech-streamlining.com/landspeed/landspeed.htm

[saltwheels262]

thanks,
called thurs.

franey

[DavidinDurango]

Sam Wittingham @ approaching 80+ mph (all human powered)


This is aero!


This bike was SO tiny!  even compared to the other contenders.   Something to think about.

David

[Rex Schimmer]

Just imagine that "bike" with a 100 cc engine in it. If it goes 80 with at best 1 1/2 hps think what it would do with 25!! That is AERO!!!

Rex

[Sumner]

Just imagine that "bike" with a 100 cc engine in it. .........Rex

Don't forget all the safety stuff that would also have to fit in there  .  John and Eric have done about as good as it is going to probably get with the required items.

c ya,

Sum

[interested bystander]

Then there was the guy who came from Europe couple years ago that pedalled just under 75mph lying on his back facing backwards in his 'liner.

The Varna 80 mph plus bicycle record holder, as yrs truly posted a couple years ago on a similiar topic, looks incredibly like one of the NSU record bikes of the '50s. One that even raced around corners!