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Old 05-16-2001, 01:32 AM   #1
myko011
Scooby Newbie
 
Member#: 3500
Join Date: Jan 2001
Location: Bay Area,CA
Post How much slower does extra passengers make you?

For example in the 1/4 mile an extra passenger (150 lbs) makes you .5 seconds slower. IS this true? I am skeptical
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Old 05-16-2001, 02:33 AM   #2
RS-LOVER
Scooby Specialist
 
Member#: 4463
Join Date: Feb 2001
Location: Boca Raton, FL
Vehicle:
2000 Impreza RS
Blue Ridge Pearl

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I heard that for every 100lbs its equivalent to 10hp. I think every 10hp makes you about .5sec faster. I'm not sure though.
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Old 05-16-2001, 04:11 AM   #3
tonytiger
Scooby Newbie
 
Member#: 3844
Join Date: Jan 2001
Location: Helsinki, Finland
Vehicle:
1993 Legacy 1.8
White

Talking

This is simple. Motor produces force to the wheels. The force is F=ma. So every moment you push the gas the more mass it slowers your go. So if you car weigths with you driving about 1400kg and you have a nice little sumo guy who weights like 100kg. The amount of your acceleration is reduced by 1400/1500 times the acceleration without the sumo dude. The equation is good even at high speeds where the air resistance is a major force. So your top speed doesn't reduce, but it takes longer to get there. Hope this helps...Might forgot something....

tony
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Old 05-16-2001, 07:15 AM   #4
-JB-
Scooby Newbie
 
Member#: 6060
Join Date: Apr 2001
Location: Toronto, Ontario, Canada
Vehicle:
MY01 Impreza 2.5RS
Black

Post

Don't know 1/4 mile times, but after the first couple of trips with passengers, I've tried to keep passengers to a maximum of 1 I was amazed at the difference.. 2 other people, and it seems like a totally different car..
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Old 05-16-2001, 08:44 AM   #5
garface
Scooby Guru
 
Member#: 1581
Join Date: Jun 2000
Chapter/Region: Tri-State
Location: yonkers, ny
Vehicle:
MY00 RS/STi7
MY01 RS Both Silverthorne

Post

Yea, put two passengers in your car and it can get kind of embarrassing. I'm assuming it would be worse with most other cars though.
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Old 05-16-2001, 10:07 AM   #6
TaiChih
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Member#: 3467
Join Date: Jan 2001
Location: Odenton, MD
Vehicle:
1998 Dinan3
Bleck

Wink

I know for sure the extra pasengers will slow you down in turns. I almost lost it once cuz I was taking a well known turn at my usual high speed and the tires started pushing hard with the passengers in my car.
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