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Old 01-22-2015, 06:31 PM   #11 (permalink)
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Quote:
Originally Posted by spacemanspif View Post
Neat idea Eddie! After seeing Metro's bumper ones I've been thinking of doing the same to my curved bumper but couldn't really think of a easy way to do it, I'll have to give the folder clips consideration.
Forget the easy way, let's do it the HARD way!





Btw...my version is unfinished, so i dont know if it will help or hurt mpg. I just wanted to find something to do with the leftover fiberglass/bondo i had lying around

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Old 01-22-2015, 07:52 PM   #12 (permalink)
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I like it for a prototype, Jedi, but after all the bright blue tape on my Saturn, the GF is kind of "over" riding in a car covered in tape. I have thought about cutting a slot in the bumper where a strip of coroplast can just be inserted and basically press fit in. Of course, tape on the inside of the bumper would ensure it stayed in properly.
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Old 01-22-2015, 09:34 PM   #13 (permalink)
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The e-Golf has something similar:



Here it is on the right, compared to the standard Golf:

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Old 01-22-2015, 11:40 PM   #14 (permalink)
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Floor cord covers

I was thinking these, but cut in half, stuck on w/ 3m molding tape. Looking around a bit I saw some as thick as 15/16". Don't know how well they would stand up to sun and weather though
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Old 01-23-2015, 01:35 AM   #15 (permalink)
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Quote:
Originally Posted by NeilBlanchard View Post
The e-Golf has something similar:



Here it is on the right, compared to the standard Golf:

noted with this car is the small antenna on the arial. im looking at that too instead of completely deleting mine. wonder how much a set of those rims would be looks good for earo rims!
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Old 01-23-2015, 01:35 AM   #16 (permalink)
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Quote:
Originally Posted by jedi_sol View Post
Forget the easy way, let's do it the HARD way!





Btw...my version is unfinished, so i dont know if it will help or hurt mpg. I just wanted to find something to do with the leftover fiberglass/bondo i had lying around
Dam that looks good from the back!
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Old 01-23-2015, 01:43 AM   #17 (permalink)
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Quote:
Originally Posted by 2000mc View Post
Floor cord covers

I was thinking these, but cut in half, stuck on w/ 3m molding tape. Looking around a bit I saw some as thick as 15/16". Don't know how well they would stand up to sun and weather though
my plan is also to use moulding tape or i think here we call it double sided tape. small slits in those clips will make it bend somewhat over curved areas. i am trying to find bigger clips these are only for A4 paper but i have seen A1 drawings clipped together. they were about twice the size than these. Click image for larger version

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also they are plastic and easy to modify u can easily cut one in half if you need less of a 'ramp' effect. best part is they cost 11 cents each converted to your currency!
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Old 01-24-2015, 02:26 PM   #18 (permalink)
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flap

addSome 'angles' at the back of cars can produce what Hucho calls 'bi-stable flow',where the separation line will dance around.
A 'flap' can trigger positive separation (Chrysler calls it 'burst'),fixing a constant coefficient of drag.
I suspect that during development work within the new aero-acoustic wind tunnels,that they were picking up cyclic 'booming' behind the original stylists design,and the flap is a cheap fix for bad aerodynamic design.
Kamm/Fachsenfeld studied these flaps in the late 1930s.
What's old is new again!
Here is the 1930s 'flap'
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Old 01-26-2015, 03:11 AM   #19 (permalink)
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Quote:
Originally Posted by aerohead View Post
addSome 'angles' at the back of cars can produce what Hucho calls 'bi-stable flow',where the separation line will dance around.
A 'flap' can trigger positive separation (Chrysler calls it 'burst'),fixing a constant coefficient of drag.
I suspect that during development work within the new aero-acoustic wind tunnels,that they were picking up cyclic 'booming' behind the original stylists design,and the flap is a cheap fix for bad aerodynamic design.
Kamm/Fachsenfeld studied these flaps in the late 1930s.
What's old is new again!
Here is the 1930s 'flap'
I wonder if that wil be a good idea to see just how much these 'flaps' will work? to do just one side of a car and see if you can pic up any difference in the cars handling or if it is pulling to a side?
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Old 01-26-2015, 06:23 AM   #20 (permalink)
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Probably not enough to notice handling differences but tuft testing might show a difference and you might possibly notice more dirt collecting on the side with the treatment due to less air turbulence not blowing dirt off.

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