Take this for what it is worth, but I have spent mega $$$ putting ultra light wheels and tires on 4 different cars that I have raced over the years. I have never gained so much as .01 in ET from it.
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| Sprung vs unsprung https://www.slantsix.org/forum/viewtopic.php?t=32589 |
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| Author: | Greg Ondayko [ Wed Dec 03, 2008 1:37 pm ] |
| Post subject: | Sprung vs unsprung |
What is the difference between sprung and unsprung weight.. Which is better, and why Do I want to have them? Thanks, Greg |
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| Author: | Joshie225 [ Wed Dec 03, 2008 1:53 pm ] |
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Unsprung weight is all the stuff that moves up and down in the suspension. Wheels, tires, brakes, 1/2 the control arms, etc. Sprung weight is everything supported by the suspension or the rest of the car if you will. All the unsprung stuff has to move for the tire to follow the road. The more mass that stuff has the more force it takes to change the velocity of those components. The less unsprung mass you have the easier it is for the springs and dampers to keep the all important tire contact patch in firm contact with the road. Mass is bad, but necessary. It's usually expensive to reduce unsprung weight. Light, but strong wheels, aluminum brake calipers, 2-piece rotors with aluminum hubs and hats instead of the giant lump of iron we call a brake rotor all cost a pretty penny. Rotating weight is especially bad. If you think of the wheels, tires and rotating brake parts as flywheels on each corner of the car it's clear that it takes horsepower to accelerate them and braking force to slow them. |
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| Author: | slantzilla [ Thu Dec 04, 2008 2:21 pm ] |
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Take this for what it is worth, but I have spent mega $$$ putting ultra light wheels and tires on 4 different cars that I have raced over the years. I have never gained so much as .01 in ET from it.
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| Author: | Ron Parker [ Thu Dec 04, 2008 3:07 pm ] |
| Post subject: | |
I agree with Bagel I have lite weight alluninum wheels lite weight front tires removing sprung weight is where you get bang for the buck. Every 100 lbs is about a tenth faster. Usually tearing stuff out is cheap and easy to a point. Thanks Ron Parker  It Aint Over Until I Win |
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| Author: | Joshie225 [ Thu Dec 04, 2008 3:14 pm ] |
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Quote: Take this for what it is worth, but I have spent mega $$$ putting ultra light wheels and tires on 4 different cars that I have raced over the years. I have never gained so much as .01 in ET from it.
You should try closed course road racing.
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| Author: | slantzilla [ Thu Dec 04, 2008 3:16 pm ] |
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Quote: Quote: Take this for what it is worth, but I have spent mega $$$ putting ultra light wheels and tires on 4 different cars that I have raced over the years. I have never gained so much as .01 in ET from it.
You should try closed course road racing.
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| Author: | Charrlie_S [ Thu Dec 04, 2008 4:36 pm ] |
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Quote: You should try closed course road racing.
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| Author: | Joshie225 [ Thu Dec 04, 2008 7:25 pm ] |
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Quote: Quote: You should try closed course road racing.
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