12-27-2022, 12:16 AM | #67 |
Major General
7268
Rep 7,438
Posts |
I gotta clarify one more thing:
Given that mass and material type used is the same, and the term stress to be force required to bend an object: The tubular item will be more rigid than a flat item. This is because the tubular item has "more area" or material to take the load in all different directions. For instance a sheet of paper vs. that same piece of paper but rolled up into a tube. You will notice that the rolled up piece of paper can be held up parallel to the ground in the axis of its thinnest diamension (aka length of the tube parallel to the ground) without bending, while a flat sheet of paper cannot be held up parallel to the ground in the axis of its thinnest diamension (aka writing surface parallel to the ground). This happens because a rolled up tube of paper has more material to support its weight, you effectively now have paper rolled up 360 degrees around a central axis. This allows it to take stress from all directions, and there is paper in all angles now able to take a small component of stress allowing the tube to be stronger in all directions vs. the flat sheet of paper (which is only capable of taking alot of stress in its long directions - i.e. the paper is great at support itself when you hold it perpendicular to the ground thin side up). This doesn't mention that when you try to bend the paper you force one side into tension and one side into compression (just like the flat piece of paper) but now you have more paper on all sides of the tube which all have the same ability to take these forces so again more components to take stress. But at the end of the day this same principal applies to the braces. A flat brace is going to be much more flexible than a tubular brace, and this is exemplified because the material choices are different, and the sizes are all different. Note: if both objects with similar size and material are tubes the solid one (or the one with internal scaffolding) is going to be much stiffer and stronger, but it will also be much heavier. If materials are different and sizes are different enough to compensate for the strength difference in materials, then the comparison becomes vastly more complicated. But so far it isn't too bad since all the alternative braces are made of a less rigid material than carbon fiber.
__________________
Click on the link below to see a compiled list of every review I have ever written:
https://f87.bimmerpost.com/forums/sh...2#post30368242 Last edited by F87source; 12-27-2022 at 01:18 AM.. |
Appreciate
1
shaneguags1194.00 |
12-27-2022, 12:45 AM | #68 | |
Major
1194
Rep 1,243
Posts
Drives: 2017 Big Turbo BMW M2
Join Date: May 2021
Location: Tampa, FL
|
Quote:
|
|
Appreciate
1
F87source7267.50 |
12-27-2022, 01:16 AM | #69 | |
Major General
7268
Rep 7,438
Posts |
Quote:
It does go on sale once in awhile, and around $500 USD iirc.
__________________
Click on the link below to see a compiled list of every review I have ever written:
https://f87.bimmerpost.com/forums/sh...2#post30368242 |
|
Appreciate
1
shaneguags1194.00 |
12-27-2022, 10:19 AM | #70 |
Major
1194
Rep 1,243
Posts
Drives: 2017 Big Turbo BMW M2
Join Date: May 2021
Location: Tampa, FL
|
yea that’s more reasonable. I would love to pair it with the Wiechers Front Racingline Strut Tower Brace - Carbon Fiber. you know if that bar is any good ?
|
Appreciate
0
|
12-27-2022, 12:53 PM | #71 | |
Major General
7268
Rep 7,438
Posts |
Quote:
For instance even if you have a weaker material, if you have enough of it (mass) you can compensate for it being weaker. For eg. Aluminum foil vs. a tissue paper, piece for piece the aluminum is much stronger. But if you stack say a thousand sheets of tissue vs. 1 sheet of aluminum, the thousand sheets tissue will be much stronger, but at the cost of weight and size. The same applies for metals, since there is just so much more brace with the afe bar, it would take a much larger carbon brace to keep up. In summary it's not only strength to weight that matters it's the amount of material available, this makes comparisons quite difficult if there is a large variation in size and mass. This generally isn't the case with 90% of the braces on the market because they have to fit in the same constraints and everyone generally wants to make light weight parts but in this case there is a significant difference. Wheel bolts are the easiest comparison, grade 12.9 vs. Titanium grade 5, both must be the same size but the titanium bolts will be much weaker but lighter. Why? Titanium may have a better strength to weight ratio, meaning when both are the same weight the titanium will be much stronger than the steel. However in this case the mass difference between the 2 is so extreme the steel ends up being much stronger. So you can see there is a point where a weaker metal can be stronger, if given enough mass. The difficulty in comparison here is how much less mass can the stronger metal have, before the strength difference is overcome. Note: this is just talking about slabs of metal and not even factoring in clever design of the brace. |
|
Appreciate
1
shaneguags1194.00 |
12-27-2022, 01:36 PM | #72 | |
Major
1194
Rep 1,243
Posts
Drives: 2017 Big Turbo BMW M2
Join Date: May 2021
Location: Tampa, FL
|
Quote:
|
|
Appreciate
0
|
12-27-2022, 02:39 PM | #74 | |
Major General
7268
Rep 7,438
Posts |
Quote:
|
|
Appreciate
0
|
12-27-2022, 02:47 PM | #75 |
Major General
7268
Rep 7,438
Posts |
|
Appreciate
0
|
12-27-2022, 02:49 PM | #76 |
Major
1194
Rep 1,243
Posts
Drives: 2017 Big Turbo BMW M2
Join Date: May 2021
Location: Tampa, FL
|
|
Appreciate
0
|
12-27-2022, 07:45 PM | #78 |
Major
1194
Rep 1,243
Posts
Drives: 2017 Big Turbo BMW M2
Join Date: May 2021
Location: Tampa, FL
|
|
Appreciate
0
|
12-27-2022, 07:52 PM | #79 |
Major
735
Rep 1,317
Posts |
|
Appreciate
0
|
12-27-2022, 08:08 PM | #80 |
Major
1194
Rep 1,243
Posts
Drives: 2017 Big Turbo BMW M2
Join Date: May 2021
Location: Tampa, FL
|
ah shoot. if I just ran the upper OEM brace you think if would help a lot ? I kinda like the fact that it’s tucked away up top and hidden. What parts would I need for all of this besides the brace itself ?
|
Appreciate
0
|
12-27-2022, 08:50 PM | #81 | |
Colonel
2276
Rep 2,515
Posts |
Quote:
__________________
?16 M2 Long Beach Blue/Black, 6MT
'22 X5 4.0 M Sport Black Sapphire/Tartufo ?22 Tesla Model Y Performance Midnight Silver/White |
|
Appreciate
0
|
12-27-2022, 11:15 PM | #82 | |
Major General
7268
Rep 7,438
Posts |
Quote:
You'd need to get new strut mounts but the m2c or m3 m4 variants, either stock or camber plates will do. Then you'd need a bunch of bolts and the metal brace - which is really cheap these days at around $300. |
|
Appreciate
1
shaneguags1194.00 |
12-28-2022, 02:34 AM | #83 | |
Major
1194
Rep 1,243
Posts
Drives: 2017 Big Turbo BMW M2
Join Date: May 2021
Location: Tampa, FL
|
Quote:
|
|
Appreciate
0
|
12-28-2022, 02:43 AM | #84 |
Major
1194
Rep 1,243
Posts
Drives: 2017 Big Turbo BMW M2
Join Date: May 2021
Location: Tampa, FL
|
I just got a response from the guy and he said it was made for a customer. It was a carbon fiber performance damper kit that is made in Taiwan. It seems like a really solid kit. He said it’s made in a factory and unbranded. Apparently it’s 9000 - 13000 yuan which is roughly $1290 - $1860 (before shipping and tax if there are any)
https://m.facebook.com/story.php?sto...ibextid=qC1gEa |
Appreciate
0
|
12-28-2022, 03:00 AM | #85 | |
Major General
7268
Rep 7,438
Posts |
Quote:
But what does he mean by "damper", damper implies allowed movement and absorption of shock due to movement, braces shouldn't allow for anything to move.
__________________
Click on the link below to see a compiled list of every review I have ever written:
https://f87.bimmerpost.com/forums/sh...2#post30368242 |
|
Appreciate
0
|
12-28-2022, 03:01 AM | #86 |
Major
1194
Rep 1,243
Posts
Drives: 2017 Big Turbo BMW M2
Join Date: May 2021
Location: Tampa, FL
|
|
Appreciate
0
|
12-28-2022, 03:02 AM | #87 |
Major
1194
Rep 1,243
Posts
Drives: 2017 Big Turbo BMW M2
Join Date: May 2021
Location: Tampa, FL
|
other photos didn’t upload, this is the rest of the kit
|
Appreciate
0
|
12-28-2022, 03:03 AM | #88 |
Major General
7268
Rep 7,438
Posts |
No, the factory aluminium brace is miles better than the stock stamped steel fire wall brace we have from factory. But it still can't compete with something like the afe brace in terms of bracing the strut towers from movement towards and away from each other. It will be better at bracing in the direction to and from the firewall along with the up and down direction. This is where upgrade corner braces will help.
__________________
Click on the link below to see a compiled list of every review I have ever written:
https://f87.bimmerpost.com/forums/sh...2#post30368242 |
Appreciate
1
shaneguags1194.00 |
Post Reply |
Bookmarks |
|
|