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Old 09-11-2009, 01:55 PM   #71
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I don't have direct experience with traction control so I really shouldn't have comented but the logic makes sense.

all of my cars have been really low end.
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Old 09-12-2009, 01:42 AM   #72
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Interesting Shatto, my dad was supposed to fly a P38, but when they arrived at their assignment they realized they were going to fly a B17. Fall of 1943.
He flew 30 missions over Europe from Christmas eve of 43 until D-Day.

I always wondered what would have happened to a P38 if they had replaced the Allisons with Merlins, like they did in the P51.

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gary
Your pappy would appreciate this:
http://www.91stbombgroup.com/91st_tales/charlie.html
You would appreciate it.
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Old 09-12-2009, 03:52 AM   #73
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Shatto, great read, they flew together on a couple of missions. I have my dad's record of his missions with me. Your dad was the lead bombardier, on many of his missions, correct?


Traction control and ABS, are basically dependent on wheel sensors at each wheel. They look a lot like a gear with a magnetic pickup that counts the teeth of the gear. Both systems look for differences in wheel RPM to do their jobs. One interrupts the brake application (abs control). The other applies brake to the spinning wheel to keep it's speed the same as the rest. (traction control).

Changing the tire size would make no real difference, but different diameter tires, on the same vehicle, would drive the system crazy.

regards
gary
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Old 09-12-2009, 04:29 AM   #74
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I know that it works with a "tone ring"-style sensor at each wheel and that matching tires shouldn't cause a problem even if they're a different size than original, but plenty of people report problems after putting on 4 new tires of a different size than original.

The only explanation I've ever been able to think of is that with large changes you're changing the whole scale on which it all works, so the system sees data in the wrong range and throws a code.

Like I said, practically speaking about the sizes in question here, that won't be an issue.
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Old 09-12-2009, 07:07 AM   #75
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holycow,

like you said, we are talking about a non-issue unless someone wants to increase outer diameter by %25+ like the rednek trucks. several people where I work have done that 32s...33s I think that is as crazy as it has gotten but these are all on jeeps without all of the fancy stuff.

their biggest problem is body roll. with the lifts and the tires, they went vertical but they have done little if anything to increase the width of their footprint. their COG has gone up. no high-G turns for them.
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Old 09-12-2009, 08:34 AM   #76
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[QUOTE=R.I.D.E.;141423]Shatto, great read, they flew together on a couple of missions. I have my dad's record of his missions with me. Your dad was the lead bombardier, on many of his missions, correct?


Gary

My dad flew fighters in the Aleutians.

My mom-in-law grew up with Charlie and I was lucky to meet him once. He was everything you'd expect from a guy who wrote a book titled; Combat, He Wrote.
http://www.91stbombgroup.com/91st_bu...udsonbook.html
His life was the stuff of movies, which is why two were made of it.

My father's military stuff was all lost in moves to and from Africa and my step-father, who may have escorted your father, memorabilia was donated to the RAF museum at Biggin Hill, where he was in Eagle Squadren.
Keep your dad's stuff in some sort of order so the story can be passed down through the generations of your family.

Heaven knows America wouldn't be in her current mess if families had told the family stories of how they got to be here and why it is all important in the context of of why America exists.
Our fathers did not vanquish the Facists, the National Socialists, the Imperialists and later the Soviets, to have their grandchildren be able to suckle the tit of our government.
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Who is shatto?
06 4.7 Tundra replaced a 98 Dakota 3.9.
623,000 miles on original engine and transmission, using Amsoil by-pass filters and lubrication.
+Everybody knows something you don't know.
+Artists prove truth can be in forms you don't understand.

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Old 09-12-2009, 12:12 PM   #77
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I know that it works with a "tone ring"-style sensor at each wheel and that matching tires shouldn't cause a problem even if they're a different size than original, but plenty of people report problems after putting on 4 new tires of a different size than original.

The only explanation I've ever been able to think of is that with large changes you're changing the whole scale on which it all works, so the system sees data in the wrong range and throws a code.

Like I said, practically speaking about the sizes in question here, that won't be an issue.
If you dramatically increase tire diameter then the systems compensation applications may not have the range to properly apply the significant larger application of brakes or release of brakes to work properly.

regards
gary
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Old 09-12-2009, 12:19 PM   #78
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If you dramatically increase tire diameter then the systems compensation applications may not have the range to properly apply the significant larger application of brakes or release of brakes to work properly.

regards
gary
Which is why I'll probibly stick with stock.
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Who is shatto?
06 4.7 Tundra replaced a 98 Dakota 3.9.
623,000 miles on original engine and transmission, using Amsoil by-pass filters and lubrication.
+Everybody knows something you don't know.
+Artists prove truth can be in forms you don't understand.

Low-Risk Option Trader
Retired Pro-Hunter featured in; 'African Hunter', by James R. Mellon III. and listed in; Rowland Ward's Records of Big Game.
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