Auto-x Splitter... does it work? - Page 2 - LotusTalk - The Lotus Cars Community
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post #21 of 47 (permalink) Old 06-26-2013, 10:31 PM
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Nice inventive fabrication work to the OP.

Super cool video. Interesting to see how the air bends over the front headlight and heads right into the rear air intake. It's a neat path to watch.
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post #22 of 47 (permalink) Old 08-29-2013, 06:20 PM
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A few years ago, aero was a big deal in ST, leading to protests at Nationals. When asked, the guy with the big wing on his Miata said that he wanted to keep it because "the car drove like crap without it". That is on a 115hp, street tired full interior Miata. Yes, I think aero makes a difference at autox speed...

Matt, that was said to me by Klippel's codriver from the 08 nationals STS wing flop-and-twitch...


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post #23 of 47 (permalink) Old 08-29-2013, 06:28 PM
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Originally Posted by scapamouche View Post
A few years ago, aero was a big deal in ST, leading to protests at Nationals. When asked, the guy with the big wing on his Miata said that he wanted to keep it because "the car drove like crap without it". That is on a 115hp, street tired full interior Miata. Yes, I think aero makes a difference at autox speed...

Matt, that was said to me by Klippel's codriver from the 08 nationals STS wing flop-and-twitch...


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post #24 of 47 (permalink) Old 09-06-2013, 06:28 PM
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Ran a splitter with no wing for awhile. Was very tail happy leading one multiple national trophy winner in our group to say "I never drove a lotus that was trying to kill me before" after I built a wing for it a different national trophy winner told me that the car was "very easy to drive"

Aero helps if it's big enough

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post #25 of 47 (permalink) Old 03-26-2014, 05:44 PM
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Ok so I updated my wing and thus felt I should do more with the splitter to balance it out... though I may have gone too far. Did a set of photos to show how I did it. Only testing will tell for sure... My side attachments may turn out to be sketchy. Again... only real world testing will reveal the wisdom (or lack thereof).

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post #26 of 47 (permalink) Old 12-11-2014, 09:05 AM
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So bumping this as I would like the OP's feedback on how well the front aero worked out.

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post #27 of 47 (permalink) Old 12-13-2014, 08:02 PM
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^ In his blog linked in his last post, he says his first splitter had very limited effect. His next splitter made from plywood warped and ruined the desired downforce. In a nutshell, he improved more from driving classes than with car mods.
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post #28 of 47 (permalink) Old 12-14-2014, 06:16 PM
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Nope it doesn't work in AutoX, I just do it because it looks Fast and Furious.....


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post #29 of 47 (permalink) Old 12-15-2014, 02:24 PM Thread Starter
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Well, I'm the OP and I made this splitter in the middle of 2013. The first time I ran it, my tires were getting kinda old and the rear tires wear out first so basically, it was bad data. The car was loose though. (Fred, this was for the Blytheville pro/tour.) I was on 225/245 tires and I had no wing.

Since then I have never tested the car with and without the splitter so I still can't say if it helps. What it does do is add ballast in the best possible place I could think of and it saves the front of the car from cone hits. It also looks cool.

So... yeah... I dunno.

The wing on the other hand is extremely noticeable. It's amazing.
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post #30 of 47 (permalink) Old 01-22-2015, 08:14 AM
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Are you doing Spring Nationals? I'd love to see them in person.

I think you should team up with HKfever and have them produced in CF though.
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post #31 of 47 (permalink) Old 01-22-2015, 08:24 AM
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If Matt sold the splitters, I'd be interested in one assuming I could get it to work on the Exige. I'm not sure about CF due to cone strikes though.

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post #32 of 47 (permalink) Old 01-22-2015, 08:45 AM Thread Starter
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It would be very easy to make a splitter in CF. It's freaking flat. I wouldn't do it though. Way too expensive to be scraping the ground constantly. My polymetal splitter is massively scraped on the bottom.

Ryan, this topic was created in 2013 when I built the original polymetal splitter that you've seen. Were you trying to reply to the fender flare topic?

Anyway, I will not be at spring Nats. I will however be able to take lots of pictures of things if you want.
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post #33 of 47 (permalink) Old 01-22-2015, 12:17 PM
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Quote:
Originally Posted by fzust View Post
Nope it doesn't work in AutoX, I just do it because it looks Fast and Furious.....
Knowing Fred...this is actually probably true!!!

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post #34 of 47 (permalink) Old 08-24-2015, 05:34 AM
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Originally Posted by glagola1 View Post
It would be very easy to make a splitter in CF. It's freaking flat. I wouldn't do it though. Way too expensive to be scraping the ground constantly. My polymetal splitter is massively scraped on the bottom.

Ryan, this topic was created in 2013 when I built the original polymetal splitter that you've seen. Were you trying to reply to the fender flare topic?

Anyway, I will not be at spring Nats. I will however be able to take lots of pictures of things if you want.

It was mentioned to me by my codriver at test n tune this weekend that he was not sure the vertical portion in front of the tire on this splitter was legal.

I am not sure either after a cursory going over the rules, but it appears on your car you are doing a similar deal, or at least in the pictures I've seen. Any thoughts?


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post #35 of 47 (permalink) Old 08-24-2015, 05:46 AM
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I think his basis was this post by @codingparadox
SM Aero Clarifications

New clarification that isn't in the rulebook yet says that aerodynamically functional vertical members "such as splitter fences or endplates" are not allowed. So, you may not have any vertical member on the splitter that can be even remotely construed to have aerodynamic purpose

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post #36 of 47 (permalink) Old 08-24-2015, 06:28 AM
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I think his basis was this post by @codingparadox
SM Aero Clarifications

New clarification that isn't in the rulebook yet says that aerodynamically functional vertical members "such as splitter fences or endplates" are not allowed. So, you may not have any vertical member on the splitter that can be even remotely construed to have aerodynamic purpose
But Fences and End Plates are inline with the slipstream... None are shown here...
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post #37 of 47 (permalink) Old 08-24-2015, 06:39 AM
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I realize that, I didn't think it was a problem unless there was some sort of rule change as it appears similar to what Matthew was doing last year, but I figured I would ask in any case.

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post #38 of 47 (permalink) Old 08-24-2015, 10:39 PM
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I realize that, I didn't think it was a problem unless there was some sort of rule change as it appears similar to what Matthew was doing last year, but I figured I would ask in any case.

Wheel arch "kicks" are in a grey area right now. Lots of people are doing them so it would be a pretty big take back to outlaw them, but they're definitely not explicitly legal. Most arguments are that they're just a new fender/bumper combo. However, the rules on bodywork is that mods must serve no other purpose, and these sorts of things have obvious aero benefit.

In general, it would be really nice for a clarification, and this winter I need to carefully craft an SEB letter to try to get one. I'm still going to build them for my car and/or buy a set off Glagola if he ever builds them.

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post #39 of 47 (permalink) Old 08-25-2015, 05:09 AM Thread Starter
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I don't think they are illegal. As soon as you bolt them to your clam, they are as much a part of your clam as they are your splitter. Your entire clam is legal to replace. Does that make sense?

Fences and endplates are items unto themselves like wings and splitters.
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post #40 of 47 (permalink) Old 08-25-2015, 05:10 AM Thread Starter
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Also, I may make flares this winter. I assume the front flares would be the first desired.
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