nikonian11 Posted February 18, 2007 Share Posted February 18, 2007 Something like this??? I love this car. http://www.blogsmithmedia.com/www.autoblog.com/media/2007/02/jd_racing_ve016a.jpg Link to comment Share on other sites More sharing options...
Tommyh Posted February 18, 2007 Share Posted February 18, 2007 that makes my heart go pitter-patter Martin Luther - "Who loves not women, wine and song remains a fool his whole life long." EL4NFZT7 Link to comment Share on other sites More sharing options...
Xenonk Posted February 18, 2007 Author Share Posted February 18, 2007 Holy shit Keefe what the hell tire size is he running in the rear?????? That fucker is huge!!!!!!!!!! :eek::eek: 315s Keefe Link to comment Share on other sites More sharing options...
Xenonk Posted February 18, 2007 Author Share Posted February 18, 2007 Drag increases with the square of speed though... That wing would cost you a lot more at 130 than it costs him at 70. Anyway, like I said, the numbers would be interesting. agreed, but he's able to go through a turn at 70 mph vs 45 mph.. big difference in that sense.. think of time saved of having a head start of 35 mph more coming out of a turn. I wont know for sure until I can just add up what the downforce numbers would be at x-angle and y-speed. Keefe Link to comment Share on other sites More sharing options...
Xenonk Posted February 18, 2007 Author Share Posted February 18, 2007 How much power is youer LGT putting out? currently it's stock now for other classification reasons for other races such as autox and NASA time trials.. but if I want to meet the next higher class, I better have something for suspension/aerodynamics that will match the power.. my goal is to do 300 whp safely for now with as little mods as possible (as each mods in the NASA TT rules go by a points system, I need to stay below or AT a point value to stay in a lower class).. if I can drop out a good 400 lbs out of the car with a roll cage, that would be great (but that's too hopeful). Keefe Link to comment Share on other sites More sharing options...
RedDevil Posted February 18, 2007 Share Posted February 18, 2007 Here's the funny thing from the last 2 years in autocross national level. Vic Sias of SF region in his M3 ran one of the biggest wings for his car.. he adopted his notion from AMod cars that have the HUGE wings like this car: Vic Sias's M3 Street Mod in 2004 and 2005: http://www.plxdevices.com/PLXRacing/AutoCross/BMW_M3_SCCA_Champ2_Small.jpg I think I have actually seen this car at an auto-x once in Stockton last year. That wing is HUGE... Link to comment Share on other sites More sharing options...
SnoDork Posted February 19, 2007 Share Posted February 19, 2007 Formula SAE Race Car. Cal Poly, Pomona. yr: 2000 Took 1st. @ FSAE Nationals!! Took 3rd. @ FSAE Europe... More Pictures here!! http://www.csupomona.edu/%7Efsae/photos/2000/index.htm http://www.csupomona.edu/~fsae/photos/2000/practice/DCP00122.jpg Now, those are some wings!! ~Sucka-Duck~ Link to comment Share on other sites More sharing options...
red beast Posted February 19, 2007 Share Posted February 19, 2007 try the simple/cheap stuff first. how about lowering the front or raising the back slightly? Link to comment Share on other sites More sharing options...
CasopoliS Posted February 19, 2007 Share Posted February 19, 2007 buy a helicopter and have it hover over you the whole race. and you can put stickers on it too. mass marketing! Link to comment Share on other sites More sharing options...
Xenonk Posted February 19, 2007 Author Share Posted February 19, 2007 try the simple/cheap stuff first. how about lowering the front or raising the back slightly? already did the rake angle, I dont want to mess up the corner balance of the car from that point. Not to mention the rest of the dynamics of the car.. Keefe Link to comment Share on other sites More sharing options...
red beast Posted February 19, 2007 Share Posted February 19, 2007 how about vanes underneath the car to straighten out the air flow? wouldn't that make it "suck" closer to the ground? Link to comment Share on other sites More sharing options...
Xenonk Posted February 19, 2007 Author Share Posted February 19, 2007 ^ you're thinking of a diffuser plate.. with a front diffuser, that would already help a lot.. our cars are built fairly nicely underneath.. a lot better than the older bodies.. Keefe Link to comment Share on other sites More sharing options...
KartRacerBoy Posted February 19, 2007 Share Posted February 19, 2007 I hope to average about 140mph at the back straight of VIR if I can do it.. Im already doing 130+ mph now.. it's just that I want down force so I can carry in more speed into the turns.. And into the tirewall! Go BIG Keefe. Link to comment Share on other sites More sharing options...
Xenonk Posted February 19, 2007 Author Share Posted February 19, 2007 ^haha, WRX didn't have wings (nor the brakes to stop it at that time). Keefe Link to comment Share on other sites More sharing options...
Scotty Posted February 19, 2007 Share Posted February 19, 2007 If the racing bodies didn't heavily regulate the underside of the car, you wouldn't see a single wing on a car. Down force to drag ratio of a wing is about 1:5(1lbs of downforce will generate 5 lbs of drag). The ratio for a properly designed undertray/diffuser is 1:3. Wings on a FSAE car is still a big debate. Lately the teams that are winning have been wingless but nearly weightless. Keep in mind if you generate more downforce, yes you will have a higher cornering speed coming onto the back straight, but now you have more drag limiting your top speed. So you might end up going slower on the back straight, but faster in the corners assuming the cornering speed is high enough to provide air over the wings. More downforce also affects you suspension set up which can cause more problems. And of course if you are not leading the race, you just lost most of the aerodynamic grip from being in the draft. Now if active aerodynamics are not prohibited, that would be the way to go. Link to comment Share on other sites More sharing options...
Xenonk Posted February 19, 2007 Author Share Posted February 19, 2007 If the racing bodies didn't heavily regulate the underside of the car, you wouldn't see a single wing on a car. Down force to drag ratio of a wing is about 1:5(1lbs of downforce will generate 5 lbs of drag). The ratio for a properly designed undertray/diffuser is 1:3. Wings on a FSAE car is still a big debate. Lately the teams that are winning have been wingless but nearly weightless. Keep in mind if you generate more downforce, yes you will have a higher cornering speed coming onto the back straight, but now you have more drag limiting your top speed. So you might end up going slower on the back straight, but faster in the corners assuming the cornering speed is high enough to provide air over the wings. More downforce also affects you suspension set up which can cause more problems. And of course if you are not leading the race, you just lost most of the aerodynamic grip from being in the draft. Now if active aerodynamics are not prohibited, that would be the way to go. which is why Im not too worry about losing a lot of top speed.. the fore mentioned that I was looking into is finding a higher average top speed per lap.. if I can bring that up, that would be better.. afterall, it's time that Im looking at.. not so much of the resultant speed. I am looking into setting up the car more loose under the corners and allow the aerodynamics provide me the necceary stability that I may need.. it's not A LOT, but hopefully significantly enough to make a difference that I have confidence in the car that will stay planted as I start to carry more speed... More of the reason why Im also looking for a spare trunk.. if it doesnt yield some good results, I'll just retire the trunk and the big wing and use it as my coffee table or use it as my ironing board at home. Keefe Link to comment Share on other sites More sharing options...
Scotty Posted February 19, 2007 Share Posted February 19, 2007 What kind of cornerning speeds are you looking at? If it is all low speed stuff, aerodynamic grip won't be as useful as mechanical grip. Link to comment Share on other sites More sharing options...
VTGT Posted February 19, 2007 Share Posted February 19, 2007 subscribe for pics Link to comment Share on other sites More sharing options...
godwhomismike Posted February 19, 2007 Share Posted February 19, 2007 These three will give you all the downforce you need: . Link to comment Share on other sites More sharing options...
Xenonk Posted February 19, 2007 Author Share Posted February 19, 2007 What kind of cornerning speeds are you looking at? If it is all low speed stuff, aerodynamic grip won't be as useful as mechanical grip. from what I remember at VIR, uphill esses are in the 100+ mph range.. the rest are in the 60 mph range.. I think the only 3 turns out of VIR Full course I can only get about 45 mph entry speeds (turn 1, turn 12 at oak tree, and possibly turn 14 at the top of roller coaster..).. Keefe Link to comment Share on other sites More sharing options...
Scotty Posted February 19, 2007 Share Posted February 19, 2007 You know, you can borrow someone's roof rack with a fairing, just stick that at the back of the roof for a very low tech spoiler. Link to comment Share on other sites More sharing options...
Xenonk Posted February 19, 2007 Author Share Posted February 19, 2007 I used to have something similar to that on my WRX and today's newer STi's.. I was looking for something like that similar for our GTs.. no company has actually made one that is M3-isque, i would get one just to try it.. but i would like a larger angle than my old WRX. Keefe Link to comment Share on other sites More sharing options...
rdionne Posted December 3, 2008 Share Posted December 3, 2008 Hello Keefe, I am new here but, I think that either the GTC-300 or the GTC-200 rear spoiler from APR Preformance would function for your needs and look really nice on your LGT. I have a conversion of the test numbers on the 200 series spoiler on my laptop if you want it. http://www.aprperformance.com/index.php?option=com_content&task=view&id=33&Itemid=44 Link to comment Share on other sites More sharing options...
FPerron Posted January 8, 2011 Share Posted January 8, 2011 I'm running the APR-200 on my '05 Link to comment Share on other sites More sharing options...
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