08-22-2019, 08:29 PM | #57 | |
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Drives: 08 Mustang GT, 19 WRX Join Date: Jul 2012
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At some point, you simply can't get enough traction to overcome the drag forces. More power by itself won't fix that. Norm
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'08 GT coupe 5M (the occasional track toy)
'19 WRX 6M (the family sedan . . . seriously) |
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08-22-2019, 08:32 PM | #58 | |||||||
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Top fuel cars raise the wing way above the car to get it into smooth air above the engine.... Funny cars have the "trunk lid" raised way out of proportion to the street bodied cars they emulate. This eliminates the separation boundary, and then they add a huge oversized wing.... even for just going in a straight line... The purpose of the "oversized" spoiler on the newish Vettes, with the added wickerbill (which actually curled forward), and the added wickerbill on the Z-28 is to create a high pressure zone, by trapping air in front of it, effectively raising the level of the "sheet metal", thus reducing the low pressure zone (lift) behind the rear glass at the trunk lid area. The low pressure is caused at the separation boundary.... This is where the air is passing too fast off the roof line and it no longer sticks to the vehicle, which then causes the air to tumble and it creates a low pressure area, which is a stallin this case... By "effectively" raising the skin, you reduce the tumble and smooth out the flow off the back of the car... In the following image, from 2014 or '15 ZL1 testing, note the high pressure areas. The pad on the front of the fascia at the very front of the car.... then the smooth flow up towards but well over the windshield.... There is a high pressure area that develops at the base of the windshield. The air then goes over the roof, with less clearance and the area to really note is as the air comes off the roof... You see it suddenly spread out and thin... This is the visual of the separation boundary, where the air starts to tumble creating a low pressure area. The wickerbill and spoiler on both the C7 vettes and the Z28 effectively raises the deck lid height, and reduces this low pressure area tendency.... You can also aid this by installing vortex generators, just like those seen on plane wings.... which create a spiral of air, that sticks to the rear glass area better, reducing the low pressure area, that reduces down force... Please note, this is only 66 or 67 mph... At speeds over 200 mph, (outside the realm of most all road racing) the air eventually comes back down to deck height, but the car would be long gone and neither a lip spoiler or a wickerbill spoiler is going to do much good.... You need to raise the spoiler and move it back.... I apologize if I'm not explaining this very well... Maybe this image will help.... Quote:
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Thanks for the info... "Hell Yeah Big Red..." and yes, I'll be down there for a day visit on Saturday... A close friend of mine, who also suffered a major medical issue, and I have made the last two events on day trips, drive in, sit in the pit area with Corey and company, and then head back home the same day... That's about all either of us can handle in a weekend... Quote:
Having said that.... Mile racing is way harder on equipment than is 1/4 mile racing... In the mile the gearing is taller, thus less tendency to spin unless you make huge power, so you are loading the entire drive train and frame with full power for 20-35 seconds or so, depending on your power and speed potential. A 1/4 mile is with shorter(quicker) gearing, and thus, less stress on the motor and drive train...Think of a 10 speed bicycle... You can use 3rd, 5th, 7th, 9th and 10th, gear... Or you can use 1st, 2nd, 4th, 5th and 6th... which will accelerate you a hella lot quicker, but we all know the pedal effort is less, it's quicker, but less effort... The first gear set will allow you much higher top speeds for the mile distance, but you wont accelerate as quickly, while pedal effort will be tremendously higher....for the entire length of the mile.... partially due to the exponential increase in wind resistance Norm mentioned.... They did run 251.9, which is flipping awesome.... Second fastest Camaro at the Mile distance ever... Kelly Bise's 4th Gen still holds the record for all Camaro's at 263.2...before it was totaled....
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If the car feels like it is on rails, you are probably driving too slow. -Ross Bentley
Horsepower is how fast you hit the wall. Torque is how far you take the wall with you. “If everything seems under control, you're just not going fast enough.” Mario Andretti If you can turn, you ain't going fast enough... |
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08-22-2019, 08:38 PM | #59 | |
corner barstool sitter
Drives: 08 Mustang GT, 19 WRX Join Date: Jul 2012
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Norm
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'08 GT coupe 5M (the occasional track toy)
'19 WRX 6M (the family sedan . . . seriously) |
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08-22-2019, 10:14 PM | #60 | |
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Depending on whom you speak with, there is the expensive way and the cheap way.... One is one time fix that requires another appointment and lots of logistics to affect, and the other can be adjusted in the pits by reading data.... A wind tunnel can give you a variety of information and it's often at a given speed, say in the 60 - 70 mph range and then extrapolated out from there.... though some wind tunnels are capable of much higher speeds for a given purpose.... The other "cheap" option, is to install a management system that can gather data at every speed and overlay that with ride height sensor information from all four corners.... You can then change the weight bias with your coil overs, or +/- splitter effect, or +/- spoiler angle... This gives real world data rather than extrapolated information. If you are spinning, you might add in spoiler and reduce splitter, while adding "weight" to the rears with coil over adjustments.... All of this can be accomplished in the pits at an event.... The location of vortex generators can be set in a wind tunnel, but it is only a WAG in real world conditions.... The best of all is to set the basics in a wind tunnel, and then tune it at the event, where even the surface of the track can determine if you need more or less of something... The secret to world records is great planning, or lots of luck.... I fall in the latter category...
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If the car feels like it is on rails, you are probably driving too slow. -Ross Bentley
Horsepower is how fast you hit the wall. Torque is how far you take the wall with you. “If everything seems under control, you're just not going fast enough.” Mario Andretti If you can turn, you ain't going fast enough... |
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08-22-2019, 10:58 PM | #61 |
Drives: ABM #93 Join Date: Oct 2018
Location: Lotaburger
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Off shore huh? Im Into production in the fields around Farmington. I’ve been contemplating going down to Carlsbad or Midland for a little while now, haven’t pulled the trigger yet. Never done any off shore but I’m sure that’s a wild expierence. Have you sold your car yet? I know your were talking about it a while back? That has to be a hard thing to swallow.
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ABM #2399 2SS/RS:SOLD
ABM #93 2SS/RS Black Rally stripes, Titanium Interior 4,000 miles: GM GFX side skirts and diffuser waiting on paint, GM dovetail, GM heritage, RPI ZL1 style splitter. ‘87 IROC-Z Iroc blue. all original unmolested with 50K miles. |
08-22-2019, 11:05 PM | #62 | |
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08-23-2019, 02:49 PM | #63 | |
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In the photo of the BOP stack below, there is a man for reference.. the one waving at me as I took the image... We move this stack over to the moonpool and lower it to the sea floor where we latch up to the wellhead. I've worked in water over 9,000 feet deep. These are designed for 12,000' sea water depth operations. The round tower next to the BOP stack is a crane pedestal base, one of 5 on this particular rig. The next difference is that, if the guys on a land rig get pissed off, and quit, or get fired, they can walk over to their truck and drive away... There is nothing to stop them... This scenario offshore can create some humorous situations.... You can get on a chopper, if there is one in the area, and there is space available, and they actually have plans to land on your rig.... You can get on a water chopper (boat) but there is the issue of when the boat is headed in, and this can be from "now" to ten days or more from now... Then there is the question of is the boat actually headed in.... or is it going to another rig for a time... It gives you pause.... you think long and hard before doing something rash... I was on a rig when two galley hands were fired.... They demanded to be put on a work boat next to the rig... This was discussed with the Co man, and the boat, and it was agreed they would be put off the rig for safety... (Their safety, as they were caught red handed stealing from guys and destroying personal clothing by tossing broken permanent markers into washing machines with travel clothes....) There were a couple of guys looking to stomp mud holes in their asses, and were perfectly capable of doing such.... So, they were loaded up in a transfer basket and put on the boat, where they were restricted to the galley, their assigned quarters and the smoking area.... Violate this and they could go to jail.... The boat wasn't to leave the rig for nine or so days.... They were fed and their clothing was taken care of, but they were stuck.... They could have called the coast guard but they were too stupid to realize this.... As took place with me, there is also the issue of illness and injuries on a rig... If an injury takes place early-ish in the day, they can get a chopper out for you, but say for a broken arm or smashed hand, you are still looking at hours minimum to arrive in a hospital. Night flights over water for a chopper are exceedingly dangerous, so unless it's critical, you will wait until the next morning.... The medic on board, of which I was for a while as a Paramedic/Flight Medic, will do what they can in the meantime... Then there is illness, where the medic on board will do what they can and in cases like mine, I was very fortunate that there was both a medic, and also a doctor from Romania.... The company man was a good friend of mine who hired me by name for the project, and we had worked together many places around the world, and he was calling the shots... He ordered the Captain/OIM to turn the ship around and head towards Trinidad while at the same time calling for a chopper... Both the doctor and the medic flew in with me performing CPR and defibrillations for hours until we arrived....I was 12 hours from onset of the heart attack and having the stents placed... As for the sale of my car, I have a stated buyer, but he does things on his schedule.... He's a good friend, so it's just a waiting game.... I'm fine with it for the simple reason that I had a goal, achieved that and I'm good with moving on.... I'll have another Camaro, just not right away....I just bought a new house and we are in the process of moving.... There is no timer in standing mile events, only a speed display. The speed would be seen on the display boards at the event, and on the speed ticket... He probably has that, even though it isn't displayed in the video.... The speed isn't seen in any of my videos either.... I don't have a display that goes above 167 and the needle only goes to 180 if I remember correctly.... So, it's on the boards, the speed ticket and on the certified copy of the run signed off by the sanctioning body... I have both, as he probably does as well... I can guess my speed at any point by knowing what gear I'm in and what RPM I'm at... Here is mine from my record pass, and that's the sales rep from ERL, Andres, who flew down to be with us when we broke the record.... I apologize for the thread jack....
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If the car feels like it is on rails, you are probably driving too slow. -Ross Bentley
Horsepower is how fast you hit the wall. Torque is how far you take the wall with you. “If everything seems under control, you're just not going fast enough.” Mario Andretti If you can turn, you ain't going fast enough... |
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08-23-2019, 04:48 PM | #64 | |
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Drives: 08 Mustang GT, 19 WRX Join Date: Jul 2012
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Best wishes on the health front. Norm
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'08 GT coupe 5M (the occasional track toy)
'19 WRX 6M (the family sedan . . . seriously) |
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08-25-2019, 02:19 PM | #65 | |
Drives: 2012 2SS Victory Red with white st Join Date: Jun 2016
Location: NC
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09-17-2019, 01:37 PM | #66 | |
Drives: 2015 SS/RS 1LE Join Date: Dec 2014
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Thanks for the advice! |
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09-17-2019, 02:28 PM | #67 | ||
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You had my curiosity. Now you have my attention. I understand this conversation is about superspeeds, but it does beg the questions... (First of all I’m gonna do this...your logic is sound. I can’t believe it’s the first time I’ve heard about it. I’m set up pretty good, and I’m fine with 150-170 closed course, generally 9 over highway speeds. No record breaking going on here.) Anyway... Here’s my questions. Is this something that might make regular highway driving a little better, and if so how much road grime will get on the windshield and are their any dangers? Gas milage? This is a generic question...lol..mine is out the window... |
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09-17-2019, 07:15 PM | #68 | |
Drives: Miss Con Ception Join Date: Aug 2016
Location: Chicagoland
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2011 1SS/RS LS3 CGM
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09-17-2019, 07:21 PM | #69 |
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09-17-2019, 07:43 PM | #70 | |
Drives: 2015 SW 2SS 1LE Join Date: Jan 2018
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I've never experienced that in the 2 years that mine has been removed.
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Maggie 2650 @ 18psi/ 75mm 10 rib/ Dual alky nozzles/ Roto-fab/ ARH 2" Lt's/ GT-12 cam/ ZL1 3.23 Conv./MGW/RPS triple carbon clutch/RSG tranny upgrage/Pedders Ex. XA w/ remote cans and a lot of other crap 897/8??@tires
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