Years ago, the tyre dealer suggested nitrogen; I didn't have a clue about the matter, so said, OK. May have been a coincidence, but I never had to worry about tyre pressure - until they wore out they never leaked 'air'. The latest round, filled with the normal stuff, totally different story - depending upon everything it's something I always have to 'fiddle' with ...
It's not that simple. Different materials have different permeabilities, and different relative permeabilities. Molecular size is one factor (and they're pretty similar), but there's also solubility and polarizability. I don't have the figures for butyl rubber and SBR, but since I deal with most of the major tire companies, I know whom to ask.
http://www.getnitrogen.org/pdf/graham.pdf
Obviously, these guys have a commercial interest, but a quick read didn't trigger my shitscanner.
Obviously, these guys have a commercial interest, but a quick read didn't trigger my shitscanner.
More Snakeoil from Stereophile We Don't Get No <I>Respect</I> | Stereophile.com
Atkinson suggests that people try Belt's PWB cream and rainbow foil in the comments below the article in reply to George Holland . I thought Belt's products had long ago been shown to be one of the leaders in snake oil? Hooray for Stereophile leading us back into the dark ages.🙄
Then he gets all weird about people questioning their motives when they "test" Belt products and recommend them.
andy-c wrote:
The message is, "We don't care if your product is fraudulent or not. Not only will we not call you out for it, but we may even recommend it."
Atkinson:
"I get tired of people hiding under the shield of anonymity abusing our hospitality by posting crap like this"
I suppose using your real name as Andy C did is hiding under anonymity?😕
Wow I think I'll just stay away from THAT place from now on.😱
Atkinson suggests that people try Belt's PWB cream and rainbow foil in the comments below the article in reply to George Holland . I thought Belt's products had long ago been shown to be one of the leaders in snake oil? Hooray for Stereophile leading us back into the dark ages.🙄
Then he gets all weird about people questioning their motives when they "test" Belt products and recommend them.
andy-c wrote:
The message is, "We don't care if your product is fraudulent or not. Not only will we not call you out for it, but we may even recommend it."
Atkinson:
"I get tired of people hiding under the shield of anonymity abusing our hospitality by posting crap like this"
I suppose using your real name as Andy C did is hiding under anonymity?😕
Wow I think I'll just stay away from THAT place from now on.😱
The trouble with a lot of these 'tweaks' is that they work in the area of "I'm enjoying this music, I'll turn up the volume a bit more ... uh-oh, it's developing a bit of an unpleasant, sharp edge to the sound. I'm not really comfortable listening to this, it's starting to irritate, annoy me - I'll turn it down to a nicer, more soothing level - ahhh, that's better ..."
The trick is to measure what's really going on here ...
The trick is to measure what's really going on here ...
The reasoning behind an FAA mandate has been extensively tested and is well justified.
Most often behind an FAA AD is a request by NTSB following accidents investigation.
No chance for snake oil there.
Again, consider that operating conditions differ by far btn airplanes and cars/bikes.
George
I agree with your last statement, measure and use engineering...there is more than enough real engineering to learn, without making up stuff.
😉
Lets presume that 02 does diffuse through the tire.
You fill the tires and they leak down at most the 20.9%. SO you top the tires up again but now they have the initial 78% nitrogen plus 78% * 20.9% = 94.3% nitrogen.
They leak down again and you fill them again, you are up to 98.7% nitrogen.
After adding air to your tires four times, you should see no appreciable change compared to putting nitrogen in in the first place.
You fill the tires and they leak down at most the 20.9%. SO you top the tires up again but now they have the initial 78% nitrogen plus 78% * 20.9% = 94.3% nitrogen.
They leak down again and you fill them again, you are up to 98.7% nitrogen.
After adding air to your tires four times, you should see no appreciable change compared to putting nitrogen in in the first place.
I'm asked to believe John Atkinson can read this stuff and proceed as he does. Amusing too, one of his readers had positive comments but said Vasilene worked just as well (not an emulsion). I would think mayonnaise would work even better.
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Last occasion I took on a bet to devour 1/4gal of mayo in one go for a buck, it worked all too well.
The Science Behind the Sound
"Firstly we feel that there is more to be known about electrical signal and its audible effects than is known today. That’s not a fudge, after all we have been told for years that the human ear cannot discern frequencies above 20kHz, and yet fortunes are being spent on loudspeakers which offer up to 100kHz response, and they work!"
Yes, dolphin speakers do work for dolphins, not sure how this applies to humans! 😀
"Firstly we feel that there is more to be known about electrical signal and its audible effects than is known today. That’s not a fudge, after all we have been told for years that the human ear cannot discern frequencies above 20kHz, and yet fortunes are being spent on loudspeakers which offer up to 100kHz response, and they work!"
Yes, dolphin speakers do work for dolphins, not sure how this applies to humans! 😀
To sum up why certain audio companies and review websites are still in business:
Longtime Atlanta,Georgia television personality LeRoy Powell, whom I enjoyed watching on Channel 5 back in the 80's once did a piece on fishing. While standing in the middle of a VERY well stocked fishing tackle/lure store he said this about the products, "If one damn fool will make it, another damn fool will buy it"
Here's to you Leroy, I hope you are catching fish in heaven using only a bare hook and a smile.
Longtime Atlanta,Georgia television personality LeRoy Powell, whom I enjoyed watching on Channel 5 back in the 80's once did a piece on fishing. While standing in the middle of a VERY well stocked fishing tackle/lure store he said this about the products, "If one damn fool will make it, another damn fool will buy it"
Here's to you Leroy, I hope you are catching fish in heaven using only a bare hook and a smile.
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