Car was rock steady at 144mph last year at Daytona. The spoiler settled the *** a bit when trail braking and cornering in sweepers. Spoilers work by slowing down the air immediately above the trunk lid, thereby reducing the aerodynamic lift over the trunk. They spoil the fast smooth flow of air across the surface. They work differently than wings, but they both help.
Some older very light planes use cable operated spoilers to eliminate lift over a portion of one wing to facilitate a roll to turn the airplane. It is a simpler device than an aileron.
Fred Erb, the dude responsible for the roll control system on the P-61.
He mentions an instance where two test pilots did a mock dogfight, P-38 vs P-61, and the P-61 owned the P-38. This is remarkable given the size & weight differences of the aircraft.
It would be interesting to know which P-38 model was used in that test. The L model was the first to use hydraulically actuated ailerons (vs sheer pilot muscle power) and had a better roll rate than earlier models, especially in high speed / heavy load conditions where the pilot by himself couldn't put much AoA into the ailerons. Since the P-61 is a late-war aircraft it very well could have been a P-38L used in the test.
Spoilers are used everywhere. Lots of jets use them for roll control, including a lot of airliners (they use a mixture of spoilers vs. inner ailerons vs. outer ailerons depending upon flight regime). Spoilers are really nice for minimizing adverse yaw.
I have the R-package spoiler on the red car. I don't think it does much other than auto-shut the trunk lid.
I've been lusting over the tougerun lip for a while, but my driveway is already trying to remove my NB1 Sport tupperware lip. There is no way I can loose another 2-3" of ground clearance on the front of the car.
Yes. Its a knockoff of the GV but instead of being made out of fiberglass and suffering from ******** shattering shipping costs and JDMy0 markup, they are made of poly and much cheaper. Last time I checked I believe they are manufactured somewhere around here in the Bay Area.
I've got great friends. Thanks to Troy (miata2fast) and Ryan_G for all of the help yesterday. You guys are awesome.
The 3.63 is in. The 6speed is in. Some vastly improved heat shields are mounted. There are some additional shields to be added in the rear differential and fuel tank area but it runs and drives.
I understand why the European cars come with the 3.63 and 6speed together. It is just the right match for gearing, naturally aspirated or turbo. The first five gears seem the same as with the 5speed and 4.10, but now there is a cruising gear above them. Very nice.
Downpipe heat shield picture attached. I decided to use standard gear clamps to retain the shield for ease of installation and future removal. An air gap was retained between the pipe and shield to facilitate air movement.
The material is an aluminum factory shield used to protect a plastic fuel tank from exhaust heat on some type of minivan or truck I found at the junkyard. It was about 36"x12" and mostly flat with some ribs for air gap. I cut it to size and bent it around the downpipe. What you see is all one piece, split and trimmed to make the bend. It is tight and doesn't rattle or buzz.
Last edited by sixshooter; 10-20-2015 at 05:21 PM.