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Old 07-14-2009, 08:20 AM   #1 (permalink)
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Drafting Surge

Hey guys just wondering if anyone else driving a hatchback or station wagon with either zigzag tape, a kamm back or similar has noticed what I'm going to call Drafting surge.

since fitting buffet tap on my rear quarter radii to act as a ultra bargin basment VG vvvvvvv


I've notice two things:
1. a noticable increase of dirt directly from the tape but not as much on the centre of the screen as there was before the tape.
2. Drafting surge. basically as i pass a queue of traffic and someone jinks out behind me i feel a sharp jolt forward in acceleration, icould swear the last couple of time I've heard a pop sound too, but I'm guess thats my imagination. My theories for this are a bit random at the moment My main one is:the following car disrupting the near wake and thus reducing my Overall drag load and giving me a temporary imbalance in power/drag compared to speed i was travelling at. The pop i think is coming from the moisture vents on the rear valance moving due to a rapid change in pressure....

anyone else had this ?? theories??

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Old 07-14-2009, 10:15 AM   #2 (permalink)
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I've noticed similar things but in different situations; as a semi passes me, decel. then accel.
I want to try having a friend tailgate me to see if I coast farther but none of my friends nearby are reckless enough.
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Old 07-19-2009, 01:36 AM   #3 (permalink)
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Quote:
Originally Posted by gascort View Post
I've noticed similar things but in different situations; as a semi passes me, decel. then accel.
I want to try having a friend tailgate me to see if I coast farther but none of my friends nearby are reckless enough.
me, me pick me. i will do it. i have drafted cars on bicylces, land luges, gpv*s
and all sorts of contraptions. lots of fun. and yes your car will get a lil push
but more without your snowshovel ;-)
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Old 11-25-2009, 02:46 AM   #4 (permalink)
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Quote:
Originally Posted by robchalmers View Post
theories??
sonic pop?

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