Hitting 300 km / 183 miles

[WD Pro]

First up, I don’t think it’s a wise idea but you do what you do …

But in the interest of safety, I would do a bit of research on the following :

• Drive shaft boots - I’m sure I read that one of the GT500 guys popped a driveshaft boot after doing repeated high speed runs.
• Fitment of doors and windows. I’ve read some people have got excessive wind noise at speed and some have even had issues with the doors unlatching. Not a common issue but if you have one of those cars that could give you a nasty surprise and Ford don’t exactly bolt these cars together with any consistency … lol. I know BITD some of the U.K. guys pushing top speed with some older model Fords had issues with windows / doors / sun roofs etc and were taping them up for high speed runs (and not just for aero).

Things that you think are fine now get exposed to a disproportional level of stress with the ‘extra’ speed you are now considering …

WD

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[MustangGt2018]

First up, I don’t think it’s a wise idea but you do what you do …

But in the interest of safety, I would do a bit of research on the following :

• Drive shaft boots - I’m sure I read that one of the GT500 guys popped a driveshaft boot after doing repeated high speed runs.
• Fitment of doors and windows. I’ve read some people have got excessive wind noise at speed and some have even had issues with the doors unlatching. Not a common issue but if you have one of those cars that could give you a nasty surprise and Ford don’t exactly bolt these cars together with any consistency … lol. I know BITD some of the U.K. guys pushing top speed with some older model Fords had issues with windows / doors / sun roofs etc and were taping them up for high speed runs (and not just for aero).

Things that you think are fine now get exposed to a disproportional level of stress with the ‘extra’ speed you are now considering …

WD

Thanks for the info. This is the helpful information I'm looking for.

I was looking at QA1 Driveshaft Carbon Fiber REV Series One-Piece SFI Approved Mustang GT Automatic Transmission 2018-2021 to combine with my Ford Racing Half Shafts. Any idea why it broke? I suspect if he was using the stock driveshaft it could be simply applied force, however, I've noticed another issue in that area, "HEAT" from the exhaust system. I've been looking at a better driveshaft and combined with heat controlling options to separate heat from the exhaust from affecting that area

Happy to see there are people on this forum who understand this is in the interest of safety. Lot of snowflakes on this forum or undercover Camaro owners trolling the forum, I can't tell.

 

[shogun32]

I was looking at QA1 Driveshaft Carbon ... Any idea why it broke? I suspect if he was using the stock driveshaft it could be simply applied force,

you *might* want to re-read what he wrote. Or do you not know the difference between shaft and boots?

this is in the interest of safety.

sorry I couldn't help but bust out laughing when I read that. Clearly you have so much money to spend you don't know what to do with yourself. I recommend you take your car AS-IS to the 'Ring and drive some laps.


I gotta unsub. This is just too painful. You wouldn't happen to be the 20 year old who found a one-off rare white Mustang a few months ago, would you?

I reiterate my previous recommendation. Go spend 10 large on a 1000cc Jap superbike and you'll realize the Mustang (well any car less than 200,000USD) is a turd that can't get out of it's own way. And the bike will happily go >180mph for minutes at a time.

But the way this is going, I agree with the earlier recommendation to set your alarm clock 10 minutes earlier. Seems about where your technical ability is at.

 

[MustangGt2018]

you *might* want to re-read what he wrote. Or do you not know the difference between shaft and boots?


sorry I couldn't help but bust out laughing when I read that. Clearly you have so much money to spend you don't know what to do with yourself. I recommend you take your car AS-IS to the 'Ring and drive some laps.


I gotta unsub. This is just too painful. You wouldn't happen to be the 20 year old who found a one-off rare white Mustang a few months ago, would you?

I reiterate my previous recommendation. Go spend 10 large on a 1000cc Jap superbike and you'll realize the Mustang (well any car less than 200,000USD) is a turd that can't get out of it's own way.

You're not making any sense anymore, just move on and let someone who does contribute. Every useless reply you make takes away from anyone else reading this looking for safety information or technical details. No need to prove anything to me, but like the other guy was smart enough to understand, this is in the interest of safety, not your personal amusement. Something seriously wrong with you man if your laughing to satisfy your ego but in reality you just don't understand the connection between a driveshaft, driveshaft boot and heat from the exhaust and don't understand the potential connection anyone looking to improve safety might understand from the previous gentlemen's comments.

 

[shogun32]

takes away from anyone else reading this looking for safety information or technical details.

uh dude, NOBODY on this forum is reading this thread with any delusions that ^^^^ is going on. You still haven't posted so much as the downforce and windtunnel test reports for your APR bits. You haven't posted your ride-height and rake numbers. Mods YOU DID for "safety" remember? Do you even own a ruler? A laser level?

you just don't understand the connection between a driveshaft, driveshaft boot and heat from the exhaust

I don't huh...

 

[MustangGt2018]

uh dude, NOBODY on this forum is reading this thread with any delusions that ^^^^ is going on. You still haven't posted so much as the downforce and windtunnel test reports for your APR bits.

Well, I think you definitely need to go back and read what I wrote about APR since you are confused with the fact I don't actually own any. It seemed like you had something of value to contribute to downforce when you started down that road and since apr makes spoilers and wings for professional race car drives, I did entertain that topic, which you had no useful information to share. The same goes for your comments people don't look for safety information. If that is truly your perspective then I can see now I've made the mistake of entertaining someone who is full of useless information

 

[Bikeman315]

Well, I think you definitely need to go back and read what I wrote about APR since you are confused with the fact I don't actually own any. It seemed like you had something of value to contribute to downforce when you started down that road and since apr makes spoilers and wings for professional race car drives, I did entertain that topic, which you had no useful information to share. The same goes for your comments people don't look for safety information. If that is truly your perspective then I can see now I've made the mistake of entertaining someone who is full of useless information

If you are really looking for answers you posted in the wrong forum. Post your request in the European sub forum. No one here in the good old US of A is going to take you seriously. I am guessing you have probably figured that out.

Now here is a real recommendation. Go to a local tuner and work with them. They may be able to put together a plan to allow you to do 300km. Based on your questions I highly doubt you have the necessary skills to do this on your own. Good luck!!

 

[Norm Peterson]

Dear experts,

I would like to safely take my Mustang GT 2018 premium Non PP up to 300km or 183 miles ( legally ) on the autobahn that I use to and from work and my question is what modifications/upgrades should be made to do this without risk of something breaking.

For starters, you really need to see what it would take to even go that fast. And you can't use acceleration at 255 kph as a guideline - the aerodynamic limit is like a wall that you just can't see coming until you run into it.

Gearing and tire size are critical, as you want to be able to be at or very close to max HP rpm at 300 kph.

There's a fairly fussy analysis that might be able to predict what it might take after running a few iterations, but there's way more input data required than anything I'm likely to see in this thread. Like at least a good representation of your engine's torque curve all the way to redline/fuel cut.

I'll just say that top speed occurs when acceleration drops to zero, which could occur before, at, or slightly after hitting peak HP rpm depending on specifics. I'm going to leave it at that for now.


Norm

 

[Norm Peterson]

What do you think about the APR 71 Wing and spoiler. Again sorry for my lack of understanding your specific details but are you saying the car needs more downforce? A slight raise in the back did help a bit, I didn't think a wing or spoiler was needed, what are your technical thoughts on that?

You seem to be missing the point, this is simply for fun and doing it safely is the point. As far as 255 limitations go, I don't think you understand the point and are getting emotional.

So far, you don't appear to have a firm enough grasp on the basic physics involved. If you can't solve the basic matter of what it's going to take to meet your goal, none of those other details are going to matter.


Norm

 

[MustangGt2018]

So far, you don't appear to have a firm enough grasp on the basic physics involved. If you can't solve the basic matter of what it's going to take to meet your goal, none of these other details are going to matter.


Norm

It is not really that complicated to take a car into a wind tunnel. Anyone can do this, just like people take their cars to the dyno once they add HP... Why do people on this forum like to make personal attacks against someone trying to source collective information. Your previous post was interesting and had some value to it, but then you sort of aligned yourself with the previous guys who like to make useless posts and use this forum to alleviate their ego problems.

 

[shogun32]

It is not really that complicated to take a car into a wind tunnel. Anyone can do this,

yup. find your local tunnel, slap your various aero bits on and go pay the man to blow some 300kph wind at it and measure the (not so) laminar flows, the downforce and buffeting profiles and so forth. Then publish your research. It'll be a fascinating read I'm sure. Maybe you can get APR to pick up some of the tab.

My closest tunnel is 3hrs away is run by NASA across the street from Langley AFB. I'll ring the boys up and ask them when I can book a slot.

 

[Norm Peterson]

It is not really that complicated to take a car into a wind tunnel. Anyone can do this, just like people take their cars to the dyno once they add HP... Why do people on this forum like to make personal attacks against someone trying to source collective information. Your previous post was interesting and had some value to it, but then you sort of aligned yourself with the previous guys who like to make useless posts and use this forum to alleviate their ego problems.

If you want any help here, you'll need to dial your defensiveness back a couple of notches. I only posted what I observed, out of those observations alone with no ego attached. I realize that you've been here less than a week at this point, so I don't expect you've got much basis for knowing who knows what. Call this a life lesson.


Perhaps you should know that I've been tinkering with a vehicle acceleration simulation off and on for over 50 years at this point, based on first principles. There's well over 50 input variables involved, and FWIW I was getting low-170s mph for a stock-ish SS Camaro when I ran that sim.

But I'm not going to put any time into it without some hard data or if the hand that was willing to feed you gets bitten again.

Ball's in your court . . .


Norm

 

[MustangGt2018]

yup. find your local tunnel, slap your various aero bits on and go pay the man to blow some 300kph wind at it and measure the (not so) laminar flows, the downforce and buffeting profiles and so forth. Then publish your research. It'll be a fascinating read I'm sure. Maybe you can get APR to pick up some of the tab.

My closest tunnel is 3hrs away is run by NASA across the street from Langley AFB. I'll ring the boys up and ask them when I can book a slot.

Keep in mind, the aero is just one part of a larger piece. Usually I don't have to say this to people but things do start to break once you go beyond factory specs in real world situations. Dynos might take you to 300 km in a perfect setting, but in a real world situation a bolt might come lose that could have been changed ahead of time or a performance part could be added to replace a stock part. This is what I'm looking for is any real world knowledge of these sort of upgrades that could be made.

 

[MustangGt2018]

If you want any help here, you'll need to dial your defensiveness back a couple of notches. I only posted what I observed, out of those observations alone with no ego attached.

Perhaps you should know that I've been tinkering with a vehicle acceleration simulation off and on for over 50 years at this point, based on first principles. There's well over 50 input variables involved, and FWIW I was getting low-170s mph for a stock-ish SS Camaro when I ran that sim.

But I'm not going to put any time into it without some hard data or if the hand that was willing to feed you gets bitten again.

Ball's in your court . . .


Norm

I can see in your original post you definitely did a good job writing with relevant experience and that has value to consider, I'm all about learning any technical information to help safely go an extra 45km on my mustang gt 2018 non pp, but then you went downhill from their which is what seems to be an issue. I had to do a double check to confirm I didn't mistakenly signed up to a forum for psychologists and people looking for mental help. If I wanted free psychologist evaluations, Id just go on Facebook...

 

[Norm Peterson]

Keep in mind, the aero is just one part of a larger piece. Usually I don't have to say this to people but things do start to break once you go beyond factory specs in real world situations. Dynos might take you to 300 km in a perfect setting, but in a real world situation a bolt might come lose that could have been changed ahead of time or a performance part could be added to replace a stock part. This is what I'm looking for is any real world knowledge of these sort of upgrades that could be made.

Basically, you're building a race car, and race cars get thorough inspections before each competition. You owe yourself no less.


Norm

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