Sheldon Brown/Harris Cyclery site
#51
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That’s how it appears from your perspective only. Have you noticed how nobody else ever seems to agree with you? It must be frustrating for you.
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#53
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NASA agrees with me. As does everyone else who has ever studied the problem in question. That must be frustrating for you -- which is probably why your only remaining option is to lash out with an ad hominem attack.
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No NASA doesn’t agree with your assertions about bicycle hydroplaning.
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License was just a euphemism for giving you the opening you were fishing for (didn't want to say tolling because that is wrong) to blabber on about how smart you are compared to anyone else on the planet. Since you want to enlighten everyone, you should check out the latest counter steer argument instead of crapping on this thread.
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#57
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Talk about fake news, now you are trying to rewrite history.
Hell, even the Sheldon Brown site agrees with me in-part. It contains the very formula for calculating the hydroplane speed, and then contradicts itself by claiming hydroplaning is impossible.
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Childish attacks will not suffice, sorry to say.
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This guy really has a knack for sending threads down the toilet.
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Oh really? NASA did not author the first version of the aforementioned formula, in 1963?
Talk about fake news, now you are trying to rewrite history.
Hell, even the Sheldon Brown site agrees with me in-part. It contains the very formula for calculating the hydroplane speed, and then contradicts itself by claiming hydroplaning is impossible.
Talk about fake news, now you are trying to rewrite history.
Hell, even the Sheldon Brown site agrees with me in-part. It contains the very formula for calculating the hydroplane speed, and then contradicts itself by claiming hydroplaning is impossible.
#62
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That said, I do not consider it dangerous that some people believe they countersteer their bicycle, and others believe that they don't. It's also challenging to prove either case, scientifically. That is diametrically opposed to this case, where is it dangerous for people to run around "blabbering" about hydroplaning being impossible, when science has long-since proved the opposite case to be true.
#63
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Blah blah blah ... I've not worried about hydroplaning since I was falling off motorcycles on a race track back in the early '70's. What has concerned me riding bicycles is "tram lining" on high pressure tubulars. I've found myself sprawled out on trafficked streets and wondering WTF until I recalled the last fraction of a second before the bike went down underneath me.
Way off topic, but perhaps this remark will finish this part of the discussion — although I gotta say this fracas has been apros pos and necessary in order to review the efficacy of the Sheldon Brown's work.
Way off topic, but perhaps this remark will finish this part of the discussion — although I gotta say this fracas has been apros pos and necessary in order to review the efficacy of the Sheldon Brown's work.
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Last edited by Lenton58; 12-04-23 at 07:12 PM. Reason: punctuation
#64
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Yes, they are. Everyone claiming that bicycle tires cannot hydroplane is questioning that formula. And that includes the Brown site -- which has been my point, all along.
"At high speeds, hydroplaning is just possible for car tires, but is absolutely impossible for bicycle tires." -- Sheldon Brown, at https://www.sheldonbrown.com/tires.html
If you, Pete, are now backing off and realizing that I am correct, just say so. Don't try and claim that "Nobody is questioning" exactly what they have been questioning.
"At high speeds, hydroplaning is just possible for car tires, but is absolutely impossible for bicycle tires." -- Sheldon Brown, at https://www.sheldonbrown.com/tires.html
If you, Pete, are now backing off and realizing that I am correct, just say so. Don't try and claim that "Nobody is questioning" exactly what they have been questioning.
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Yes, they are. Everyone claiming that bicycle tires cannot hydroplane is questioning that formula. And that includes the Brown site -- which has been my point, all along.
"At high speeds, hydroplaning is just possible for car tires, but is absolutely impossible for bicycle tires." -- Sheldon Brown, at https://www.sheldonbrown.com/tires.html
If you, Pete, are now backing off and realizing that I am correct, just say so. Don't try and claim that "Nobody is questioning" exactly what they have been questioning.
"At high speeds, hydroplaning is just possible for car tires, but is absolutely impossible for bicycle tires." -- Sheldon Brown, at https://www.sheldonbrown.com/tires.html
If you, Pete, are now backing off and realizing that I am correct, just say so. Don't try and claim that "Nobody is questioning" exactly what they have been questioning.
#66
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The site contains mistakes, and many readers of it are not equipped to distinguish the mistakes from the accurate information, as we are seeing all over this thread. The Brown site has an excellent reputation, and in many areas, it is deserved. The sections about bicycle hardware and maintenance are invaluable. Unfortunately, the sections about the rubber parts of bicycles are not, and they are causing many readers to learn inaccurate "fake news" -- and that's an unnecessary shame.
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So if I ride through flood water at high speed I might have an endo? Thanks for the heads up. Anyway it’s bedtime here now and you are the winner. I don’t think there are any prizes though.
#69
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By the way, calling a few inches of water a "flood" and failing to address most of the evidence provided is sadly typical of the depths you've had to resort to here. Better luck next time.
Neither are a surprise to me.
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I hydroplaned on wet tile getting out of the shower last week.
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Are you joking?
We've known for eons that the speed in miles per hour, is the square root of the tire pressure, in psi, times 10.2. If you don't know that, you are unqualified to contribute to this discussion. That constant has been slightly altered by research over the past half century, but again, anyone who purports to have knowledge of this topic ought to know this.
We've known for eons that the speed in miles per hour, is the square root of the tire pressure, in psi, times 10.2. If you don't know that, you are unqualified to contribute to this discussion. That constant has been slightly altered by research over the past half century, but again, anyone who purports to have knowledge of this topic ought to know this.
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#73
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It's not my fault that so many of the other vocal people here are so ignorant about bicycles, and so prone to resorting to ad hominem attacks and bad attempts at comedy, when that is brought to light.
You should be having a talk with those folks -- not the person who is discussing bicycles, and the physics thereof.
You should be having a talk with those folks -- not the person who is discussing bicycles, and the physics thereof.
#74
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First of all, the record speed on a bicycle exceeds 92 mph, so your attempted proof failed miserably -- recall that the claim you are defending is that hydroplaning a bicycle is "absolutely impossible" in Brown's words.
More to the point, see if you can manage the arithmetic for lower pressures.
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OK. So let's try 25psi on a MTB. Sqrt of 25 = 5. 5 X 10.2 = 51mph. Yeah. Good luck pedaling your MTB to 51mph!
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