Rich92forSHO
New Member
I was browsing one day and I found a site www.streamlining.com
They sell vortex generators for trucks which are supposed to improve drag and fuel economy. I contacted them because they also mentioned about using smaller ones (1/2") to keep the airflow attached to the rear windows of sedans. He replied saying that it would probably improve drag about 5% and depending if you didn't have a rear spoiler (not a wing) increase lift 40lbs at the rear at 100mph's without the spoiler. The examples on his website state that if you have a spoiler that both drag and downforce are improved due to the reduction of flow separation and providing more airflow to the rear spoiler to improve downforce or negate the additional lift that the attached airflow creates. Unfortunately he also said that he didn't want to make any for cars because they are very sharp (legal reasons) and since cars sit lower than trucks it's more easy to get cut. He did say that if more demand for them increases that he would make some with smoother edges. The ones for the truck cost about $80. the site has very good examples and info about the theory involved.
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Rich Boyd and his ol' 92
"Give me that last hp!"
"If I can afford it!"
They sell vortex generators for trucks which are supposed to improve drag and fuel economy. I contacted them because they also mentioned about using smaller ones (1/2") to keep the airflow attached to the rear windows of sedans. He replied saying that it would probably improve drag about 5% and depending if you didn't have a rear spoiler (not a wing) increase lift 40lbs at the rear at 100mph's without the spoiler. The examples on his website state that if you have a spoiler that both drag and downforce are improved due to the reduction of flow separation and providing more airflow to the rear spoiler to improve downforce or negate the additional lift that the attached airflow creates. Unfortunately he also said that he didn't want to make any for cars because they are very sharp (legal reasons) and since cars sit lower than trucks it's more easy to get cut. He did say that if more demand for them increases that he would make some with smoother edges. The ones for the truck cost about $80. the site has very good examples and info about the theory involved.
------------------
Rich Boyd and his ol' 92
"Give me that last hp!"
"If I can afford it!"
