I gotta say, it was a joyous moment when the Ford vs. Ferrari movie actually showed the strings-taped-to-the-body test. After decades of Fast & Furious type slop, you really don't expect a car movie to get that technical
@@JulianEdgar Honestly, when the alternative is "nos make flamey exhaust and floorboard fall out" I'll take it. I think my favorites are the really low-budget films that try to have the racers upshift every 2 seconds like in you know which one, but can't even be bothered to borrow something with a manual transmission for that one little shot, so instead they just show their automatic hero car going from neutral to drive over and over again. It's like, you really didn't think people would notice?
If you are building a rear undertray and diffuser, make sure you give significant attention to gas tank temperatures. The undertray will trap heat from the exhaust and heat the gas tank. Gasoline boils between 130 and 150 deg F (54 to 65 deg C). That isn't that hot. I would suggest that at a minimum you have insulated and reflective metal heat shields on the tank wherever it is in line of sight of the exhaust pipe, and exhaust manifold wrap on the exhaust itself. It's probably also a good idea to get some air moving around the exhaust above the tray. Yes letting air in above the undertray will reduce it's effectiveness, but boiling gas is a bigger problem. How do I know this? I boiled my gasoline last weekend during my undertray's first test. If you ever do overheat your gas, make sure you vent the tank outdoors, that there are ZERO sources of ignition nearby, and have a fire extinguisher ready to go.
Can properly implemented aero have a noticeable improvement on a street cars acceleration or performance? Or, worded differently, should I only spend time on aero for a serious track vehicle?
It can have a quite noticeable effect on a street car's handling and straight-line stability. There are multiple built and tested examples in my book. www.amazon.com/Vehicle-Aerodynamics-Modification-Development-alternative/dp/B0C87VYVL8 or Amazon in your counry.
@@JulianEdgar Thanks. Just always figuring where to best spend money and time on my car. Aero in particular has always seemed like the realm of professional racing and f1. Love the videos btw! Plan on purchasing some of your books in the near-ish future.
Yes but I see so many cars with, for example, the wing angle all wrong. Obviously, have never been tested. And just read amateur race car groups - all aero advice is rule of thumb, copying, etc....never proper aero testing.
You can still work within the race rules to optimize your setup. By definition, if you do the same thing everyone else is, you're not gonna get an edge.
@@JulianEdgar I agree test test test but like F1 cars aren’t the best just the best they can get away with due to regulations. Also some places have regulations on what you can do on a road car. Like how much ground clearance you are allowed. Some states say you need to keep the ground effect at rim level so that could be a lot of very little.
I gotta say, it was a joyous moment when the Ford vs. Ferrari movie actually showed the strings-taped-to-the-body test. After decades of Fast & Furious type slop, you really don't expect a car movie to get that technical
Yeah, except then their interpretation of the tuft patterns were garbage.
@@JulianEdgar Honestly, when the alternative is "nos make flamey exhaust and floorboard fall out" I'll take it.
I think my favorites are the really low-budget films that try to have the racers upshift every 2 seconds like in you know which one, but can't even be bothered to borrow something with a manual transmission for that one little shot, so instead they just show their automatic hero car going from neutral to drive over and over again. It's like, you really didn't think people would notice?
If you are building a rear undertray and diffuser, make sure you give significant attention to gas tank temperatures. The undertray will trap heat from the exhaust and heat the gas tank. Gasoline boils between 130 and 150 deg F (54 to 65 deg C). That isn't that hot. I would suggest that at a minimum you have insulated and reflective metal heat shields on the tank wherever it is in line of sight of the exhaust pipe, and exhaust manifold wrap on the exhaust itself. It's probably also a good idea to get some air moving around the exhaust above the tray. Yes letting air in above the undertray will reduce it's effectiveness, but boiling gas is a bigger problem.
How do I know this? I boiled my gasoline last weekend during my undertray's first test. If you ever do overheat your gas, make sure you vent the tank outdoors, that there are ZERO sources of ignition nearby, and have a fire extinguisher ready to go.
It's not normal to enclose the exhaust - none of my books recommend that you do so.
Will buy your books soon soon soon!
You should make a kit of parts with the book included so we can find everything in the same link!
Every car is different - *you* make your own kit of parts, based on the testing techniques described in the book.
@@JulianEdgar I mean the tools to measure, not body kits, I apologise english is my third language, I wasnt clear sorry
Your English is fine. It's cheap and easy to buy the measuring gear for yourself. eBay is your friend.
Thanks Sir.
Can properly implemented aero have a noticeable improvement on a street cars acceleration or performance? Or, worded differently, should I only spend time on aero for a serious track vehicle?
It can have a quite noticeable effect on a street car's handling and straight-line stability. There are multiple built and tested examples in my book. www.amazon.com/Vehicle-Aerodynamics-Modification-Development-alternative/dp/B0C87VYVL8 or Amazon in your counry.
@@JulianEdgar Thanks. Just always figuring where to best spend money and time on my car. Aero in particular has always seemed like the realm of professional racing and f1. Love the videos btw! Plan on purchasing some of your books in the near-ish future.
Aero is *really* easy once you start measuring stuff.
What sucks is what is allowed isn’t always the best way to do it.
Yes but I see so many cars with, for example, the wing angle all wrong. Obviously, have never been tested. And just read amateur race car groups - all aero advice is rule of thumb, copying, etc....never proper aero testing.
You can still work within the race rules to optimize your setup. By definition, if you do the same thing everyone else is, you're not gonna get an edge.
@@JulianEdgar I agree test test test but like F1 cars aren’t the best just the best they can get away with due to regulations. Also some places have regulations on what you can do on a road car. Like how much ground clearance you are allowed. Some states say you need to keep the ground effect at rim level so that could be a lot of very little.
@@michaelblacktree yes but it’s limits what you actually can do
Yes but there’s testing… and there’s testing. Eg if you’re not measuring aero pressures, your testing is not very good.