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Author Topic: Rolling Resistance  (Read 24073 times)
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Ratliff
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« on: May 30, 2008, 08:50:09 PM »

The formula I have is N = W x V x T / 270 where N is the power required, W is the weight in kilograms, V is the speed in kilometers per hour, and T is the rolling resistance of the tire.
 
The factors are
T = 0.015 on concrete
T = 0.025 on crushed rock/asphalt
T = .05 unpaved dirt road
T = .10 dirt field
 
The estimate for T on wet salt at Bonneville is .04 to .05
 
This is an older formula but should still give useful results.
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dwarner
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« Reply #1 on: May 31, 2008, 08:07:34 AM »

"This is an older formula but should still give useful results."

To a question not asked.

DW
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Ratliff
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« Reply #2 on: May 31, 2008, 08:11:39 AM »

"This is an older formula but should still give useful results."

To a question not asked.

DW

Responded to by a person who doesn't know there are multiple formulas for calculating rolling resistance.
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dwarner
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« Reply #3 on: May 31, 2008, 08:47:46 AM »

Pressing ignore again.

DW
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John Noonan
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286 200+ mph time slips. 252 mph on a dirtbike




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« Reply #4 on: May 31, 2008, 01:43:04 PM »

Pressing ignore again.

DW

Dan all you have to do is resist the "desire" to press the ingnore feature and after a day or so it will be very easy. afro and this is all you will see "This user is currently ignored."

J
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John Noonan
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286 200+ mph time slips. 252 mph on a dirtbike




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« Reply #5 on: June 02, 2008, 10:23:29 PM »

Pressing ignore again.

DW

Dan all you have to do is resist the "desire" to press the ingnore feature and after a day or so it will be very easy. afro and this is all you will see "This user is currently ignored."

J


15 now...
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John Noonan
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286 200+ mph time slips. 252 mph on a dirtbike




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« Reply #6 on: June 03, 2008, 12:10:33 AM »

Updated 16 now...wow
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Dr Goggles
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« Reply #7 on: June 03, 2008, 12:36:41 AM »

make that 17
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bvillercr
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« Reply #8 on: June 03, 2008, 12:37:29 AM »

 shocked shocked
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salt27
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« Reply #9 on: June 03, 2008, 12:58:15 AM »

Updated 16 now...wow
John,
I stand corrected.
Don
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panic
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« Reply #10 on: June 03, 2008, 08:14:13 AM »

Slowly it dawns on me.
Posts here are evaluated as follows:
1. peer rank of author: 99%
2. accuracy or factual content: 1%
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John Noonan
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286 200+ mph time slips. 252 mph on a dirtbike




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« Reply #11 on: June 03, 2008, 11:16:35 AM »

18 now
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ddahlgren
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« Reply #12 on: June 04, 2008, 02:16:37 PM »

ROTFLMAO.... grin
Will it go up yet again?  huh
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Blue
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« Reply #13 on: June 04, 2008, 05:36:24 PM »

Slowly it dawns on me.
Posts here are evaluated as follows:
1. peer rank of author: 99%
2. accuracy or factual content: 1%
I think those ignore buttons are being pressed by racers and builders.  The person they're ignoring is neither. rolleyes

Personally, I expect that my own peer rank in this group should be low until I have some of my work actually running down the salt or dirt.

I have seen less than one in ten posts of the nearly 200 he has deluged us with in one week be both applicable to topic and not obsolete.  That's a lot of good posts, but it's just too many bad ones.  Right now, he's creating a massive percentage of the traffic on this site and devoting that space to (for lack of a better term) spam.

I tried to put up with it, but now I'm #18.
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panic
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« Reply #14 on: June 04, 2008, 09:41:04 PM »

I'd like to know more about the motivation behind the public display of righteous indignation "I pressed the ignore button".
This is, of course, the exact opposite of ignoring him, but instead commenting on him rather than his post.
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