Landracing Forum
Tech Information => Aerodynamics => Topic started by: A2WindTunnel on October 30, 2012, 11:50:56 AM
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I would love to recreate this in the wind tunnel to see what the difference in drag from a "standard" tuck to what Rollie did back in '48. I know Herb Harris sold the bike in 2010 for $1 million and doubtful we could get the actual bike for a test. To really recreate it correctly, is there any photos of him in his normal position on this bike along with speed and then there can be a comparison to this position and speed. Anyone have any historical info about this that could be helpful or know where the bike is now?
-D
(http://upload.wikimedia.org/wikipedia/en/thumb/4/4a/Rollie_Free%2C_record_run.jpg/220px-Rollie_Free%2C_record_run.jpg)
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Dave, Big Sid will know! :cheers:
http://www.bigsid.com/Default.aspx
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I'm available for a recreation except it was on a Trumpet and I'm old.
FREUD
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I'm available for a recreation except it was on a Trumpet and I'm old.
FREUD
A strumpet? :-D
Regards, Neil Tucson, AZ
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I'm available for a recreation except it was on a Trumpet and I'm old.
FREUD
I know there is a Pitot Tube joke in there somewhere but the image is disturbing enough I can't put clear thoughts together.
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Freud!! now I have to sleep with the night light on!!!
I would be a great experiment.
Rex
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=red,2,300]
My Eyes!!!
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Rumor is that the Colonel Sanders folks are looking for those chicken legs . . . . .
I'm just sayin' . . . . . .
We love you Freud. Pass the gravy?
I'm available for a recreation except it was on a Trumpet and I'm old.
FREUD
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Might have better aero if you shaved under your arms.
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I thought the salt was the whitest stuff on the planet until I saw that ass.
I'm still gouging my eyes out.
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Disregarding the esteemed Dr F's business card (I received my copy in person {and immediately dipped it in Lysol}) for a minute.
I have been told that Mr Free made a pass with a SHIRT on and then with shirt off ran FASTER,
The claimant said Free's great amount of back hair lowered the Cd and then DOUG KRUSE went on to say - are ya ready? - it was . . . "HAIR - O - DYNAMICS!
Happy Halloween!
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Rollie Free rode a Vincent Black Lightning. This was a race version of the Vincent Black Shadow C (sometimes referred to as a "3"). It was the same as the shadow with plates, seat, lights and other small changes. Rollie's Lightning was further stripped and modified.
For wind tunnel testing, any late-model Black Shadow stripped to an equivalent level of bodywork should be close. Have to find a rider with the right amount of "ponch" to create the correct upper body and leg angle...
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I thought the salt was the whitest stuff on the planet until I saw that ass.
I'm still gouging my eyes out.
That ass does sorta disappear into the background. ROFLPIMP
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The butt crack is the right direction and doesn't flutter :roll: :cheers:
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I'm giving Freud an edge in the aero position, plus he's a heck of a lot cuter! He claims to have stiff riding position.
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Hauling Bare A!!
I will be questioned why this is used as my screen saver picture.
Those people just don't get it.
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Several people used the lie-down riding position while it was still legal - Jack Dale on his Harley 45 for instance. I think the frontal area is reduced and the "fineness" ratio increased; both of which should reduce drag. Sometimes around 1954 or 55 a test was done in Europe which determined that well fitted leathers had lower drag than bare skin. Look at the riding positions of most modern Hayabusa bikes. The riders are just crouching a bit, which can't be doing anything for aero drag. If they lowered or removed the seats and did something with the tank (except the the problem with the air intakes) it would at least look more race-like.
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Most of us that race Hayabusas do all of that. The tank has nothing to do with the air intake. :cheers:
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talk about rubbing salt in a wound if you were to crash :-D
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Rubbing salt in the wound - - is a real and serious issue. Fred knows, Nancy knows, and on and on. And now I'll once again campaign for the kevlar underwear that we wear when on a race course. Bulky, yes, but not so bad -- and not hot, and not that cheap -- but way cheaper than skin grafts and even just plain ol' suffering while the rash heals. Long pants with stirrups to hold 'em down, long sleeved shirt with hook-n-loop closure to hold the cuffs in place - - all good.
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Tape the gloves around the suit cuff. That way they don't roll up.
FREUD
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SSS, I couldnt imagine what road rash feels like after crashng on a motorcycle, especially at speeds seen on the salt. Ive had road rash after crashing on a bicycle and that sucks. I sure as heck dont wanna know what it feels like after a tumble off a motorcycle. You motorcycle riders are crazy :-D :cheers:
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When I crashed in 2010, about thirty or forty minutes after the crash, laying in the ambulance I asked the EMT's could you please get the salt out of my Azz. Man it hurt. :roll:
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I was a witness to Fred's get off, nasty but so lucky.
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It was really ugly and scary, and yes I was very lucky. To walk away from that with minor salt rash was almost a miracle. Dont want to try it again!! :-D
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Hmmm, red flesh and salt.....Jerkey!
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I had a crash at over 100 mph. Thought I would never stop sliding. Started feet first, Jacket pulled up kicked around so I was sliding head first, my shoulders and butt got hot. Ended up aching my back and trying to slide on my helmet and soles of my boots. Even rolled and slid face down before I stopped. Wore though the elbos of my suit and a quarter size hole in my skin to the bone and about 16 square inches of skin off my back over my kidneys.
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What surface?
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Asphalt
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Went over the bars at ~120 once on asphalt. The guy behind said it looked like I was break dancing until I go to the runoff area when I went airborne. I stopped before the tires/armco. The good news was that I distributed the load on just about every part of my body at different points in the tumble/slide. The bad news is that I hurt just about everything. Only a couple of holes though and no bones broken, so I got off lucky.