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Old 02-24-2018, 04:34 PM   #11 (permalink)
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Originally Posted by freebeard View Post
It would have been good if they had radius'd the trailing edge of the wheel opening to help bring the flow parallel to the outer flow,rather than collide with it.

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Old 02-24-2018, 07:09 PM   #12 (permalink)
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Something like that would be great if I had a longer fender to roll in, but I’ve only got about 6” of fender...
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Old 02-24-2018, 07:14 PM   #13 (permalink)
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Seems like a lot of work for a questionable result. But I can imagine that any rounding of that edge will help reduce wake.
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Old 02-24-2018, 07:14 PM   #14 (permalink)
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If you do it, please do at least an A-B test. Probably no going back to A on this one.
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Old 02-26-2018, 10:30 AM   #15 (permalink)
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BMW saw enough benefit from relieving wheel well pressure to implement a vent (same function as the rolled fender, evacuation of higher-pressure air) on the X5.

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Old 02-26-2018, 01:56 PM   #16 (permalink)
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Agreed that the front tire to door hinge line is critical.



I think this is a fiberglass Hebmuller, but you can get the same effect by grafting a Superbeetle nose onto the back. Gary Emory did it in the 90s. That would be a good picture to dig up. He did it to a 1952 with an MG-TD windshield!
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Old 02-27-2018, 02:46 AM   #17 (permalink)
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If you do it, please do at least an A-B test. Probably no going back to A on this one.
It’ll be very difficult to get anything resembling a valid A-B test of the fender mod... I figure that if I mod the trailing edge, I’ll do a pair of fenders and swap them on... problem is, it takes about 90 min a side due to the other stuff that needs removed... weather would change a lot in half a day...

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