cyrus Posted February 20, 2016 Share Posted February 20, 2016 Will a splitter on front wand no rear spoiler create problems. I plan on a 1 to 2 degree rake on the 240z. Thanks. Quote Link to comment Share on other sites More sharing options...
johnc Posted February 20, 2016 Share Posted February 20, 2016 Depends on how effective the splitter is. If it's effective enough to eliminated the 200 lbs of lift at 80 mph then you will have a car with aero oversteer at that speed. Quote Link to comment Share on other sites More sharing options...
RebekahsZ Posted February 21, 2016 Share Posted February 21, 2016 If the springs are stiff enough to transfer that downforce into the pavement. Quote Link to comment Share on other sites More sharing options...
JMortensen Posted February 24, 2016 Share Posted February 24, 2016 I think the main thing you need to make a splitter work is a boxed in radiator duct, so that any air that gets into the front goes through the radiator. Quote Link to comment Share on other sites More sharing options...
johnc Posted February 25, 2016 Share Posted February 25, 2016 http://www.formula1-dictionary.net/splitter.html Quote Link to comment Share on other sites More sharing options...
RebekahsZ Posted February 27, 2016 Share Posted February 27, 2016 You don't create down force until you have exceeded the force of lift. Until you do that, you are only reducing lift to a value closer to zero. If you do achieve down force greater than lift on the front of the car and do not reduce lift on the rear, and have sufficiently stiff spring rates to translate these changes into the tires, you can actually change the attitude of the car as it goes down the track. So long as this change in attitude (I'm talking about aviation attitude, not mental attitude) doesn't cause your front to hit the ground, or your tail to hit the limit of rebound in your struts, or change your dynamic alignment settings, none of this really matters. We are talking extremes here, going pretty fast, and for me in a straight line, to get into these issues. Faster than most folks on this site will likely go. I'm not smart enough to add turning a corner into that complex discussion. Quote Link to comment Share on other sites More sharing options...
texis30O Posted March 2, 2016 Share Posted March 2, 2016 I am going to go for the 200mph club in my 240...... I need all the aero help I can get. I just bought wheels (15"x8") buying tires in the next couple days 275/50/15 to help........ a splitter and belly pan are essential in my eyes.... Quote Link to comment Share on other sites More sharing options...
RebekahsZ Posted March 2, 2016 Share Posted March 2, 2016 A lotta dirty power will overcome a little dirty aero. Quote Link to comment Share on other sites More sharing options...
texis30O Posted March 2, 2016 Share Posted March 2, 2016 Well with over 600 on tap right now and more on the way I think I have a fighting chance.... Quote Link to comment Share on other sites More sharing options...
nismo silvia Posted May 6, 2016 Share Posted May 6, 2016 Sweet Quote Link to comment Share on other sites More sharing options...
RebekahsZ Posted May 10, 2016 Share Posted May 10, 2016 texas300, when is your next try at the standing mile? I plan to do the Arkansas Mile, and maybe a trip to Loring Maine (1.5-mile track) in 2017, assuming they can keep the facility. I'm really curious to see where 600hp will take you. Easy launch without tirespin, clean shifts right on the shift light, and nothing crazy or abrupt is the key. Several of us have gotten pretty uncomfortable with drifting in the lane at around 170mph, so be careful. A 1/2-mile experience can be really informative as well, as that lets you know how much mph you can hope to gain in the second half. EasTNz and I plan to attend the Georgia 1/2-mile in Sept if it doesn't conflict with the Ohio Mile. The 1/2-mile will just be an excuse for us to hang out together. The Ohio Mile will be spring rate, alignment, chute and aero testing with the goal of going 175mph only. But doing it safely. Quote Link to comment Share on other sites More sharing options...
RebekahsZ Posted October 4, 2016 Share Posted October 4, 2016 (edited) Rear spoiler is now a permanent fixture on my car. With a splitter on the front, at 140 mph, the car gets twitchy. A tall rear spoiler settled that down. I made several 1-mile runs this weekend, all at or above 170 mph. With the rear spoiler, the car was very comfortable. My final "all or nothing/hell bent on victory" run was without a rear spoiler to try to reduce drag. I only went 170 again and the car was scary going down the track and slid to the left suddenly at least 10 feet upon throttle lift as I passed the timing beams. I actually had to cross-steer to keep the car feom spinning. I need to find an old post where someone told me to install a spoiler-I need to do some grovling and say:"You were right." I did try a BRE style short spoiler for one run where I ran a fluke 173, bit the car was almost as scary with that spoiler as it was with nothing. I would have liked to try that short spoiler again, and I will in the future, but my brother took it off the car while I was changing my pants-lol! I'm. Not going to draw a lot of conclusions based on a single run. My car is a 167-174mph car. This weekend it was virtually all 170s regardless of configuration. I did manage (1) 71 run with the big spoiler and the 173 with the small one, but I was still only 170 on the 2-3 runs I managed to have the courage to make with no spoiler at all. I always seem to have one unexplainable quick run during these meets that defies logic and makes me think the timing system had an error. I know this post started about splitters. My car has acted this way consistently even after I cut the splitter off last year (I recently added it back on). We have a lift problem at the rear of these cars that deserves attention above 150. Edited October 4, 2016 by RebekahsZ Quote Link to comment Share on other sites More sharing options...
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