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M3 Track: Racing and DE Best mod for speed is learning to get the most out of what you currently have. Tracks and DE's is the place to start!


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Old Thu, Aug-08-2019, 05:15:29 PM   #31
Obioban
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Default Re: 3D printed brake duct project update.



How they look all buttoned up. Been running them all year.

I've been debating plastidipping them a matte black to make them slightly less visible, though don't know how it would hold up over time...
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Old Thu, Aug-08-2019, 07:23:36 PM   #32
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Default Re: 3D printed brake duct project update.

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Originally Posted by NeuroE46 View Post
I would love this file, if you wouldn't mind sharing...

If you are up for designing headlight blank ducting that would be awesome too. Those carbon ones are so expensive for such a simple design
That's on my to-do list. I don't know about a duct, but I definitely want to make a blank that has the generic shape of our headlights... it'll be tricky to get the face correct, though
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Old Fri, Aug-09-2019, 12:09:37 AM   #33
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Default Re: 3D printed brake duct project update.

they look great! this is part of my wave 2 of my track car... i probably won't get around to doing it until i upgrade to a full bbk setup.
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Old Fri, Aug-09-2019, 03:23:00 PM   #34
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Default Re: 3D printed brake duct project update.

Here's the brake ducts I came up with, which are designed to replace the stock foglights and OE brake ducts.

There's two variants-- one with an intake duct, one without. That said. I designed it with my intake setup specifically in mind-- so if you are running a stock intake or full stock ducting CSL intake, you'll need to tweak them to work with your setup. I included a ducted passenger version, as well, but that'll only be useful for engine swapped cars

The mounting brackets (files also attaches) should be metal. They attach to stock holes on the bumper, and you can use them at the same time as the stock parts that attach there (horns on the drivers side, I forget what on the passenger side).

The inside of the ducts mounts to the stock brake duct mounting location, reusing the stock hardware.

If you run the piping as pictured below, you should have zero rubbing at full steering lock (at least with my 275 wide front track tires that's the case for me). I used hard motorsport backing plates, but they're kind of crap-- I don't recommend them, but they do function with some massaging.

These are designed so that you can take the bumper off and the brake ducts stay behind-- so the car doesn't become more of a PITA to work on. They don't require drilling any holes in the bumper, or permanent modification to anything. That said, you get a clearly final look if you cut off the fog light mounting bracket inside the bumper.

You can download them all from dropbox here:
https://www.dropbox.com/sh/b5c0f5uzh...KUbzxduua?dl=0

here's the part, this is the ducted version:



Here's how they look installed with the bumper off:



bumper on with fog light mounting bracket retained:



Where's to pass the tubing through for no rubbing:



Full lock one way:



Full lock the other way:



Final result:



FWIW, YMMV
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Last edited by Obioban; Fri, Aug-09-2019 at 03:27:27 PM.
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Old Sat, Aug-10-2019, 04:01:34 PM   #35
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Default Re: 3D printed brake duct project update.

Nicely done.
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Old Wed, Aug-14-2019, 07:26:35 AM   #36
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Default Re: 3D printed brake duct project update.

Fully agree that the Hard Motorsport backing plate is terrible at fitment. The backing plate holes don't even line up to the kingpin holes.e I had to enlarge the backing plate holes to make it fit. Expected a lot more for the price they charge for them.
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Old Wed, Aug-14-2019, 04:31:45 PM   #37
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Default Re: 3D printed brake duct project update.

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Fully agree that the Hard Motorsport backing plate is terrible at fitment. The backing plate holes don't even line up to the kingpin holes.e I had to enlarge the backing plate holes to make it fit. Expected a lot more for the price they charge for them.
Agreed. Most of their stuff has been hit or miss for me. I often end up using some of their stuff because there's no other option.

Obioban: That duct is massive! I would be willing to bet you're going to have to spend some time finding the right pad that works with the new cooling you're seeing unless you're doing endurance races or are just a person hard on the brakes.

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Old Wed, Aug-14-2019, 04:50:14 PM   #38
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Default Re: 3D printed brake duct project update.

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Agreed. Most of their stuff has been hit or miss for me. I often end up using some of their stuff because there's no other option.

Obioban: That duct is massive! I would be willing to bet you're going to have to spend some time finding the right pad that works with the new cooling you're seeing unless you're doing endurance races or are just a person hard on the brakes.

Maybe I could get away with running FM1000s on the track now
(which are tweaked for Brembo DS2500s, that are the pad I run on the street)

I have 3 sets of track pads on the shelf I have to work through before changing to anything.
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Last edited by Obioban; Wed, Aug-14-2019 at 04:54:02 PM.
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Old Wed, Aug-14-2019, 06:05:08 PM   #39
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Default Re: 3D printed brake duct project update.

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Originally Posted by nholmes View Post
Agreed. Most of their stuff has been hit or miss for me. I often end up using some of their stuff because there's no other option.

Obioban: That duct is massive! I would be willing to bet you're going to have to spend some time finding the right pad that works with the new cooling you're seeing unless you're doing endurance races or are just a person hard on the brakes.

I actually think Obioban's brake ducts might be even better than Hard Motorsports. It is huge and looks to flow better for the desired routing.
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Discussing 3D printed brake duct project update. in the M3 Track: Racing and DE Forum - Best mod for speed is learning to get the most out of what you currently have. Tracks and DE's is the place to start! at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)