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Old 07-15-2014, 06:35 PM   #71 (permalink)
aerohead
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on the rear

Quote:
Originally Posted by chefdave View Post
Hi freebeard again
can these half rounds be used on rear to help reduce drag. Do you need to use 4" or can i go up to 6"
Thanks
dave
There's not a lot of published data which addresses your question.
Here is a drag table for bus type vehicles.You can see that softening the rear vertical edges DOES lower drag.

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