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> Show us your splitter!
HalfMoon
post Sep 9 2017, 09:10 PM
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I had posted this inquiry before in the garage but I suppose I really should have posted it here...
I've a Sheridan standard wide-body that I'm having some floating issues with (no doubt due to the sbc anchor out back) and so I've decided to build a splitter in the hopes of keeping things a bit more stable.
As you can see I have a duck tail but it's useless for any kind of real downforce nor can I say I'm keen on building a wing as this car is also streeted, but I think a splitter may help.
Let's see what ya'll are building/have built!
Thanks
David
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Cracker
post Sep 12 2017, 07:32 PM
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Let me put it this way...I broke by first splitter early one weekend at Road Atlanta. I then went on to set the fastest lap and speed I have ever done in a 914. I went 164.3 mph around T9 with no splitter - you do not need one. BTW: I run a 3.5" splitter reveal and have a massive rear wing - if you do try to add a splitter the 5" you are thinking is way too big.

Tony

I would add more negative toe in the rear - try .100" per side and O-toe in the front. You also have to add more - camber... I run 2.35 in the front & 2.40 in the rear.
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HalfMoon
post Sep 12 2017, 08:03 PM
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QUOTE(Cracker @ Sep 12 2017, 09:32 PM) *

Let me put it this way...I broke by first splitter early one weekend at Road Atlanta. I then went on to set the fastest lap and speed I have ever done in a 914. I went 164.3 mph around T9 with no splitter - you do not need one. BTW: I run a 3.5" splitter reveal and have a massive rear wing - if you do try to add a splitter the 5" you are thinking is way too big.

Tony

I would add more negative toe in the rear - try .100" per side and O-toe in the front. You also have to add more - camber... I run 2.35 in the front & 2.40 in the rear.


I think given that my fronts are maxed out going to -2.40 in the rear wouldn't work. And I suspect for the same reason -.100" toe in the rear and zero in the front wouldn't work. Your numbers hinge on using camber plates so my fronts can get more negative camber, right?
Front (best that could be achieved w/o camber plates)
L negative.94 Toe 1/16
R negative .65 Toe 1/16
What's your corner weights? Mebbe I can remedy the problem with added front weight until I get camber plates?
As an aside, the numbers you're recommending are for an iron v-8, right? 2360 is my total weight.
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Cracker
post Sep 13 2017, 01:03 PM
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You can do what you want but you did ask for direction...I don't know nearly as much as allot of folks around here but very few have gone faster in a 914. It has taken time, trial and error to figure out what make these cars tick. Best of luck.

Tony

QUOTE(HalfMoon @ Sep 12 2017, 10:03 PM) *

...and I suspect for the same reason -.100" toe in the rear and zero in the front wouldn't work. Your numbers hinge on using camber plates so my fronts can get more negative camber, right?

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HalfMoon
post Sep 13 2017, 02:01 PM
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QUOTE(Cracker @ Sep 13 2017, 03:03 PM) *

You can do what you want but you did ask for direction...I don't know nearly as much as allot of folks around here but very few have gone faster in a 914. It has taken time, trial and error to figure out what make these cars tick. Best of luck.

Tony

QUOTE(HalfMoon @ Sep 12 2017, 10:03 PM) *

...and I suspect for the same reason -.100" toe in the rear and zero in the front wouldn't work. Your numbers hinge on using camber plates so my fronts can get more negative camber, right?



Huh?
I wasn't being argumentative. Quite the opposite, but if you took it that way....(shrug).

So, can anyone else chime in? Can I go with more rear toe and zero toe in the front if I can't get much more negative camber out of my front (due to a lack of camber plates)?
I'm a bit hesitant not knowing what effect that could make (without getting what's been noted as a need for more negative front camber)
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stownsen914
post Sep 14 2017, 10:11 AM
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Being maxed out on camber should not influence how much toe you decide to go with, in front or in back. Zero toe in front should be fine. I use toe out personally, but my car is track only. You can try .1" toe in back. I use more than that to counter flexing, but it should be a good start. Don't worry about the camber for now. More would be better, but I don't think that's going to be the source of the wandering.

You mention above that you added bump steer. Do you mean that you added a bump steer kit? If that's what you meant, you still need to measure your bump steer to make sure it's really been minimized. It varies widely from car to car depending on ride height, tire/wheel sizes, and other factors.

In case you're not familiar, here's an article on Longacre's site about how to do it => http://www.longacreracing.com/technical-ar....aspx?item=8162. Of course, they want to sell you an expensive tool to help measure it. You can DIY it and get pretty close with string and a tape measure, or make a tool yourself similar to the one soe vendors sell if you are handy.

Re: adding weight, I would not choose that option. Your car is at a nice weight at 2360. That should not be your issue.

Scott
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HalfMoon
post Sep 14 2017, 02:49 PM
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QUOTE(stownsen914 @ Sep 14 2017, 12:11 PM) *


Re: adding weight, I would not choose that option. Your car is at a nice weight at 2360. That should not be your issue.

Scott


Oh, and for the purposes of clarification, I wasn't thinking about actually adding weight, rather changing the corner weighting to reflect carrying a lil more weight in the front.
Currently 480/480 700/700. But I was thinking changing a lil could help.
Something like 490/490 690/690.
Not sure if I was unclear or not about weighting.
D
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Posts in this topic
HalfMoon   Show us your splitter!   Sep 9 2017, 09:10 PM
Cracker   David, I would suggest you leave it be and work o...   Sep 11 2017, 01:09 PM
HalfMoon   David, I would suggest you leave it be and work ...   Sep 11 2017, 07:36 PM
stownsen914   I'd have to agree that having a splitter witho...   Sep 12 2017, 03:16 PM
HalfMoon   I'd have to agree that having a splitter with...   Sep 12 2017, 04:23 PM
Joe Ricard   Splitter will help make sure it goes all the way b...   Sep 12 2017, 05:33 PM
HalfMoon   Splitter will help make sure it goes all the way ...   Sep 12 2017, 05:58 PM
Cracker   Let me put it this way...I broke by first splitter...   Sep 12 2017, 07:32 PM
HalfMoon   Let me put it this way...I broke by first splitte...   Sep 12 2017, 08:03 PM
Cracker   You can do what you want but you did ask for direc...   Sep 13 2017, 01:03 PM
HalfMoon   You can do what you want but you did ask for dire...   Sep 13 2017, 02:01 PM
stownsen914   Being maxed out on camber should not influence how...   Sep 14 2017, 10:11 AM
HalfMoon   Being maxed out on camber should not influence ho...   Sep 14 2017, 02:44 PM
HalfMoon   Re: adding weight, I would not choose that optio...   Sep 14 2017, 02:49 PM
Cracker   LF 553 RF 534 LR 777 RR 758 This include...   Sep 12 2017, 08:25 PM
HalfMoon   LF 553 RF 534 LR 777 RR 758 This includ...   Sep 12 2017, 08:30 PM
stownsen914   Wandering can happen for multiple reasons. I'd...   Sep 13 2017, 08:53 AM
HalfMoon   Wandering can happen for multiple reasons. I...   Sep 13 2017, 10:05 AM
Cracker   One more suggestion...some trial and error on your...   Sep 13 2017, 01:12 PM
Andyrew   LF 553 RF 534 LR 777 RR 758 This includ...   Sep 13 2017, 11:55 AM
Cracker   Andyrew - How'd you do on reading comprehensio...   Sep 13 2017, 01:05 PM


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