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      01-31-2013, 01:38 PM   #1
dmw16
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Is There a Market For Cheaper Brake Ducts?

I'm just wondering if there is a market for cheaper brake ducts? The TMS pieces look great, but $1000 carbon pieces are a lot for weekend track enthusiasts.

This was inspired by the thread about manufacturing equipment where a few suggested brake ducts. I don't think that equipment is the right approach, but I think the ducts cloud be made fairly cheaply.

Just wondering people's thoughts on this. What do you think people would spend on fiberglass ducts? Carbon ducts?
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      01-31-2013, 02:01 PM   #2
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There are already ducts for $200 or so, Apex I believe.
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      01-31-2013, 02:16 PM   #3
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There's also these (which I have on my car): http://www.cantrellmotorsport.com/in...art&Itemid=117

Pricey, but you get the whole setup.
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      01-31-2013, 10:22 PM   #4
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I started making my own from OEM dust shields and parts from Aircraft Spruce, but ended up picking up some Cantrell ducts from a board member here. There are DIY threads if you want to build your own for a less money.
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      02-01-2013, 12:10 AM   #5
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There's a market if you want to produce something simple and effective.

The Cantrel kit is nice but when I look at it I don't see $500+
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      02-01-2013, 09:58 AM   #6
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Quote:
Originally Posted by kaiv View Post
There's a market if you want to produce something simple and effective.

The Cantrel kit is nice but when I look at it I don't see $500+
Supply and demand.
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      02-01-2013, 09:58 AM   #7
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Quote:
Originally Posted by kaiv View Post
There's a market if you want to produce something simple and effective.

The Cantrel kit is nice but when I look at it I don't see $500+
I think the problem is tooling costs. I am not sure how cheaply you could produce functional tools, but I may look into it a bit.
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      02-01-2013, 03:35 PM   #8
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Quote:
Originally Posted by kaiv View Post
There's a market if you want to produce something simple and effective.

The Cantrel kit is nice but when I look at it I don't see $500+
Probably 200%+ markup. Flat pieces of aluminum cut to a certain shape are not worth hundreds of dollars. But if a few will pay it...
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      02-01-2013, 04:13 PM   #9
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You can buy the OEM dust plates ($44 each) and rivet in aluminium flanges ($8-10, from an aircraft supplier). I did this and f'ed up by putting the hole so far from the strut it was over one of the wishbone thingies. Epic fail. You can make holes in the front and rear of the undertray side elements with a circular bit and rivet in a flange at the front. You can connect these with aircraft ducting ($8-10/ft, need ~8ft, $64-80).

Parts cost: 184-208 plus probably need a circular cutting tool as well to match the tube width

(I have some 3" duct tubing for sale if you want! I was about to restart the dust plate cutting when another board member advertised a Cantrell set, so I decide to pick that up. The 3" tubing was also going to rub a fair bit in the wheel well, so I would have needed to replace all the above items to finish my DIY project.)
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      02-01-2013, 04:16 PM   #10
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It'd be nice to have something like the Porsche GT3 air guides... they are just simple air deflectors that direct air to the brakes under the car. Bolts on to the lower suspension arm. Simple to install and inexpensive.


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      02-01-2013, 04:53 PM   #11
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i can make these backing plates and front ducts if enough people want them. but seems there are only a handful of us that would use them
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      02-03-2013, 03:49 AM   #12
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Quote:
Originally Posted by kaiv View Post
There's a market if you want to produce something simple and effective.

The Cantrel kit is nice but when I look at it I don't see $500+
Yup but when you look at what's available, they are the best bang for the buck. For a car that's supposedly tracked a lot (and I do see a lot of E9x M3's at track days), I'm amazed at what little options there are for parts that are very beneficial at the track (larger oil cooler anyone??).
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      02-03-2013, 06:56 AM   #13
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those air guide look like a cool option.
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      02-11-2013, 01:37 AM   #14
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Quote:
Originally Posted by dmw16 View Post
I'm just wondering if there is a market for cheaper brake ducts? The TMS pieces look great, but $1000 carbon pieces are a lot for weekend track enthusiasts.

This was inspired by the thread about manufacturing equipment where a few suggested brake ducts. I don't think that equipment is the right approach, but I think the ducts cloud be made fairly cheaply.

Just wondering people's thoughts on this. What do you think people would spend on fiberglass ducts? Carbon ducts?
There should be some demand.
high performance carbon has at least 3 different versions of bumper ducts for the M3, this was back in 2010. HPC is on facebook.

Last edited by smpl3; 02-19-2013 at 02:18 AM.
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      02-15-2013, 12:46 AM   #15
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Quote:
Originally Posted by dapopa9 View Post
i can make these backing plates and front ducts if enough people want them. but seems there are only a handful of us that would use them
Interested...
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      02-16-2013, 09:16 PM   #16
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Quote:
Originally Posted by Z K
It'd be nice to have something like the Porsche GT3 air guides... they are just simple air deflectors that direct air to the brakes under the car. Bolts on to the lower suspension arm. Simple to install and inexpensive.


I actually bought a set of these and tried to adapt them over a year ago. They're not even close.
Mitsubishi has a similar kit, only smaller guides for the Evo. Mine had them on it back in '03. Not sure how effective they were though.
On my 135 I had purchased some F30 backing plates and installed them due to the bigger scoops. The M3 is very similar though. The factory ducts can be bent/pulled inwards to help out somewhat, but the brakes still need more direct air
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