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> GT lower valance, is this a good choice for the track?
Brad Roberts
post Oct 17 2006, 11:24 AM
Post #21


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Thanks Kevin!

Glad to hear it is more user friendly than it first appeared to me.


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Brad Roberts
post Oct 17 2006, 11:26 AM
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Grant,

you changed the picture?? That is an absolutely GREAT shot of your car. It tells alot about the car.


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grantsfo
post Oct 17 2006, 12:23 PM
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QUOTE(Brad Roberts @ Oct 17 2006, 10:26 AM) *

Grant,

you changed the picture?? That is an absolutely GREAT shot of your car. It tells alot about the car.


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Whats it say? ....This is a cheap piece of #$%&! track car? (IMG:style_emoticons/default/biggrin.gif)
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Brad Roberts
post Oct 17 2006, 12:47 PM
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One of the first things I do is track down who is shooting pics at the event. Gather the pics and "read" them. If you dont have data acq.. I cant determine how much roll the car has in the different corners (only max roll with a shock marker of some sort) so pics are the next best bet.

I can see all 4 tires (looking for rollover) I can see what corner it is. I can see body roll. I can see your line. Typically I can see hands on the steering wheel.

I factor in everything I can get my hands on for setup.


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vincesix
post Oct 17 2006, 02:08 PM
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QUOTE(Aaron Cox @ Oct 16 2006, 04:59 PM) *

vince... i got a GT valence too...

its gonna be pretty hard to attach a flat piece to the bottom...

maybe bust out the fiberglass... and reshape the bottom.... so you have some meat to screw the splitter onto it

I just looked at it with a tape and straight edge. It will need some more fiberglass reinforcing and bottom reshaped . I think i will make a plywood moc up first, then build it with plastic or ABS. Should look good and work well when it's done.
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vincesix
post Oct 18 2006, 08:17 AM
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Anyone got pictures of one completed? Might be helpfull before i start.
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retrotech
post Oct 18 2006, 09:39 AM
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Another version.


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Brad Roberts
post Oct 18 2006, 10:35 AM
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WOW! I would personally consider that "excessive" The very lower lip is what I consider the splittler, even though the air dam has one built into it. This pic is a good example of the actual lip.



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Chris Pincetich
post Oct 18 2006, 10:37 AM
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A removable ABS splitter would make a fun winter project. Are they supposed to attach flush to the lower air dam, or is it supposed to be more effective with a small gap to let some air flow between lower dam and upper splitter? Looks like most of them have no gap. I like the comment that beefy bolt heads can help reduce scraping the splitter off. Gotta go with 13mm bolt heads, that wrench works almost everywhere else. (IMG:style_emoticons/default/biggrin.gif)
(IMG:style_emoticons/default/beerchug.gif)
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Trekkor
post Oct 18 2006, 11:01 AM
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I have a track day on Nov 12th at Sears and would like to have mine made by then.

I'll modify the Sweeper Dam so the splitter can hang from the rubber skirting. It'll firm up the air dam for the track and will still have give when I hit stuff (IMG:style_emoticons/default/unsure.gif)


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Brad Roberts
post Oct 18 2006, 11:47 AM
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Trek,

I just looked at Grants Laguna pics.. I was going to suggest to you that you need to remove the sweeper dam for track events and go to something else. The sweeper works well for AutoX, but it might be slowing you down on the big tracks.


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Trekkor
post Oct 18 2006, 11:58 AM
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Heres a shot you may have missed from TH at speed. The Sweeper folds away.


KT


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maf914
post Oct 20 2006, 07:33 AM
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Trekkor,

The FIA is gonna penalize you for using a movable aerodynamic device! (IMG:style_emoticons/default/laugh.gif)

This year there was a big controversey in F1 concerning flexible wings. As a result, only Ferrari is permitted to use them. (IMG:style_emoticons/default/laugh.gif)
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Brad Roberts
post Oct 20 2006, 10:32 AM
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We have already asked Trekkor to remove his fluid bag that he keeps in the front trunk (IMG:style_emoticons/default/barf.gif)


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Trekkor
post Oct 20 2006, 01:32 PM
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QUOTE
his fluid bag


Huh? (IMG:style_emoticons/default/confused24.gif)


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I already removed *that*. (IMG:style_emoticons/default/laugh.gif)

(IMG:style_emoticons/default/poke.gif)


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Brad Roberts
post Oct 20 2006, 01:46 PM
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F1 cars had a fluid bag of sorts mounted in the front nose for some reason I cant recall. They banned it.

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914forme
post Oct 20 2006, 04:57 PM
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That fluid bag was called Advanced Damping System.

Renault and Ferrari and others maybe used this device.

Banned for this reason according tho the FIA (all devices influencing aerodynamic performance of the car must be rigidly secured to the entirely sprung part of the car and must remain immobile in relation to the sprung part of the car)

The system worked by suspending a mass in the fluid of the damper. The effect of this is used in many other applications, from cranes to geophysics and gave the cars an advantage over rough terrain like curbs where the tire wall could not damp enough of the vibration.

With this technology gone, the Renault and Ferrari (and others) may find it a little more difficult to 'ride the curbs' as they have in the past, and I would assume the FIA are hoping it will lower corner speeds as a result.
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Brad Roberts
post Oct 20 2006, 05:07 PM
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Yeah.. what he said..LOL

I have now viewed a total of 3 F1 races in my life (IMG:style_emoticons/default/smile.gif)


I would rather read about setups in RaceCar Engineering.


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Crazyhippy
post Oct 20 2006, 05:10 PM
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F1.com has a neat section about the changes each team makes between each race... all the tech is amazing.

We added 3 little holes in the side of the wing and gained 10% more downforce, and lost 4% of drag...

BJH
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Trekkor
post Oct 20 2006, 06:55 PM
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First mock-up of my splitter.

Yes, I've been to Home Depot and yes, that's plywood. (IMG:style_emoticons/default/dry.gif)

Once I get the angle right, I will take it all apart and laminate fiberglass over it, sand it out and paint to match.

What do you think?

What is a good target angle for the splitter? Should it just be parallel to the ground?

It only weighs a few pounds more now.


KT


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