You can get exactly the same "effectiveness" - at least to the degree that can be measured. It just might be more difficult.
Look - I'd personally LOVE to be able to remove the stock lip on the Golf. It would open up a range of aftermarket parts that attach to the stock location and - like with the non-lip'd Hondas - I'd have an easier time attaching something built from scratch...
K
Kirk - thanks, and I do in fact understand. I just never found 'that rule' that bugged me enough to not understand how others don't see it the same way before. Now I have. Just because I don't understand how you can't see it the same doesn't mean you have to.
Because both of these were Saturday afternoon projects to try something new. Like I said - take a look at the Rabbit. That is where I am headed with my setup, with a tray back to the wheel well openings that includes a diffuser. In the end I may end up deciding the direction based on other factors, like standing on a scale with both setups in hand, to see if the deletion of the facia panel with the big bumper makes up for the added weight of the setup. I already know that the big bumper has a negative impact on airflow over the oil cooler/radiator, which may suggest a bit less drag.
(BTW - Both are less than 1/4 inch above the rim - though the small bumper one ended the weekend 1/4 high on one side and 1/4 low on the other - it is just the perspective of the picture that makes the 2nd one look too low. Obviously the orange car has no restriction in that area.)
Last edited by shwah; 12-29-2008 at 10:06 AM.
I can confirm that your request has worked its way to the ITAC board for consideration, Chris. Thanks for doing that! The GOOD news is that it's something we can look at as a distinct issue, unlike all of the weight specification requests that are hung up waiting on bigger process or procedure questions.
K
No you can't. Have you looked at these OE 'lips' up close, and inspected how to build a airdamn/spliter on one?
Maybe you can on your golf, great for you, but the models i listed can't.
The models listed must have the air damn set back to get any splitter blade, with the OE lip and the restriction on the height of the airdam/splitter, the lip keeps you from being able to do what you can with the lip removed.
Sure you could build a air damn over the OE lip, but then you have no spliter blade, you can still put the splitter there but it isn't much of one.
Greg Amy has posted a good link that describes what a good effective airdam/spliter, i haven't seen too many good examples of spliters in IT...
Here is a great one for the 92-95 civic and wont be as effective with the OEM lip in place.
Any car with a one-piece front bumper that comes close to the ground has the same limitation. You can't look at just Hondas.
It's pretty hard to get a real splitter out of this car (forgive the dirt, it hasn't been washed since the last enduro.)
Last edited by JoshS; 12-29-2008 at 10:38 PM.
Josh Sirota
ITR '99 BMW Z3 Coupe
I'm sorry, Jimmy - it sounds like you want a particular design that the rules are going to make difficult to the point of being impossible, equating "how it looks" (e.g., the depth of the splitter blade) with "effectiveness."
But that was probably a poor choice of words on my part, so I'll take it back, since any suggestions here about what's effective and what's not are just guesses, absent any data.
Suffice to say that whatever the rule, there will always be some cars that are better suited in some respects, and others who end up stuck with a design challenge or compromise. Whatever the rule, we all have the same opportunity.
Sorry for overstating my case.
K
Again read the article that greg has posted it talks all about effectiveness.
If you do some research you will see that what is pictured is a effective splitter design. And you can't do it on those cars with the OE lip.
I have no problem that the rules are written the way the are, i was simply stating that leaving the lip on does change things.
I was thinking out loud...
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