Group Buy & Product Dev. FD RX-7 Post your possible Group Buys and product interest for the 1992 through 2002 FD series RX-7 in this section.

Custom FD Front Brake Ducts

Thread Tools
 
Search this Thread
 
Old 08-31-16, 01:57 PM
  #1  
Junior Member

Thread Starter
 
djritz's Avatar
 
Join Date: May 2014
Location: California
Posts: 29
Likes: 0
Received 2 Likes on 2 Posts
Custom FD Front Brake Ducts

I'd like to gauge interest in custom hub side brake ducts for the FD.
The design will be similar to the CWR/Triple-R parts, made to mate up to a 3" brake duct hose.
Cost TBD depending on how many are interested, but expect high quality finish for both exterior and interior surfaces.
I will update with the actual design concept later this weekend.

Thanks,
Joey

Images for a general idea:



CWR Brake Ducts


Old 08-31-16, 03:59 PM
  #2  
Full Member

 
marky.'s Avatar
 
Join Date: Sep 2008
Location: England
Posts: 143
Received 1 Like on 1 Post
I'd be interested in something like this dependant on price,fitment and clearance
Old 08-31-16, 04:07 PM
  #3  
Rotary Enthusiast

iTrader: (33)
 
Spalato's Avatar
 
Join Date: Jul 2004
Location: US/EU
Posts: 1,080
Received 112 Likes on 65 Posts
Interested!
Old 08-31-16, 11:22 PM
  #4  
Rotary Enthusiast

iTrader: (30)
 
Brekyrself's Avatar
 
Join Date: Aug 2004
Location: Chicago
Posts: 1,168
Received 50 Likes on 41 Posts
Interested.
Old 08-31-16, 11:50 PM
  #5  
Junior Member

Thread Starter
 
djritz's Avatar
 
Join Date: May 2014
Location: California
Posts: 29
Likes: 0
Received 2 Likes on 2 Posts
The plan is to fit 18x10.5 wheels at minimum, but I expect you could run whatever you want as I won't design any of the hard parts to extend much outside the rotor diameter.
Anyone interested in the duct transition piece that would fit up to a 99 spec front lip as well?
Old 09-01-16, 12:19 AM
  #6  
Goodfalla Engine Complete

iTrader: (28)
 
Monkman33's Avatar
 
Join Date: May 2005
Location: Kennewick, Washington
Posts: 3,233
Received 32 Likes on 25 Posts
Very interesting.... Depending on price and clearance, I may be interested in the both items mentioned.
Old 09-01-16, 12:44 AM
  #7  
Full Member

iTrader: (1)
 
ohnono's Avatar
 
Join Date: Jun 2011
Location: CA
Posts: 63
Likes: 0
Received 0 Likes on 0 Posts
Interested!
Old 09-01-16, 11:48 AM
  #8  
Rotary Enthusiast

iTrader: (30)
 
Brekyrself's Avatar
 
Join Date: Aug 2004
Location: Chicago
Posts: 1,168
Received 50 Likes on 41 Posts
Originally Posted by djritz
Anyone interested in the duct transition piece that would fit up to a 99 spec front lip as well?
A kit like that would be great.
Old 09-01-16, 12:38 PM
  #9  
Full Member

iTrader: (4)
 
fdjonny's Avatar
 
Join Date: Aug 2011
Location: chino hills ,california
Posts: 85
Received 2 Likes on 2 Posts
interested as well
Old 09-01-16, 01:23 PM
  #10  
Full Member

iTrader: (1)
 
rx7+8=nice's Avatar
 
Join Date: Nov 2011
Location: marietta
Posts: 131
Received 0 Likes on 0 Posts
Interested
Old 09-02-16, 10:11 AM
  #11  
Form > Function

iTrader: (107)
 
MattGold's Avatar
 
Join Date: Dec 2003
Location: Metro Detroit
Posts: 1,645
Received 198 Likes on 100 Posts
Totally interested. Would need the front ducts for sure.
Old 09-02-16, 10:37 PM
  #12  
Vodak

iTrader: (38)
 
rotary#10's Avatar
 
Join Date: Aug 2005
Location: Oakland, CALI = O
Posts: 881
Received 44 Likes on 31 Posts
I'm trying to figure out how to duct this with pre 99 spec bumpers with dual oil coolers
Old 09-05-16, 04:10 PM
  #13  
Senior Member

iTrader: (9)
 
0piston's Avatar
 
Join Date: Feb 2001
Location: Vancouver, BC
Posts: 722
Received 2 Likes on 2 Posts
interested in both!
Old 09-07-16, 01:49 PM
  #14  
Goodfalla Engine Complete

iTrader: (28)
 
Monkman33's Avatar
 
Join Date: May 2005
Location: Kennewick, Washington
Posts: 3,233
Received 32 Likes on 25 Posts
Originally Posted by rotary#10
I'm trying to figure out how to duct this with pre 99 spec bumpers with dual oil coolers
Run a splitter across the brake duct guiding air below the oil cooler. Just like some people do with v mount setups.
Old 09-13-16, 12:42 AM
  #15  
Junior Member

Thread Starter
 
djritz's Avatar
 
Join Date: May 2014
Location: California
Posts: 29
Likes: 0
Received 2 Likes on 2 Posts
Playing with a few different ideas for the rotor duct.
In order to get a simpler part, and better flow, I'm considering knocking one of the mount holes off the upright. This is probably less ideal for some people since it requires some skill/courage with a grinder.

Would people still be interested if you had to modify the uprights? Or would you like to see the design work with the stock mount points (all 3)?

More complex, works with OEM mounting:


Stock Mounting

Simpler, requires grind-o-rama:


Modified Upright
Old 09-13-16, 01:04 AM
  #16  
Rx7 Wagon

iTrader: (16)
 
Narfle's Avatar
 
Join Date: Nov 2002
Location: California
Posts: 6,988
Received 875 Likes on 548 Posts
Wider market if it fits all 3...I'm interested in a stock-non-modified application.
Old 09-13-16, 03:42 AM
  #17  
Rotary Enthusiast

iTrader: (33)
 
Spalato's Avatar
 
Join Date: Jul 2004
Location: US/EU
Posts: 1,080
Received 112 Likes on 65 Posts
Also interested in the 3 hole version.
Old 09-13-16, 08:32 AM
  #18  
Form > Function

iTrader: (107)
 
MattGold's Avatar
 
Join Date: Dec 2003
Location: Metro Detroit
Posts: 1,645
Received 198 Likes on 100 Posts
Couple suggestions...

1) Keep all three mounting points.
2) In order for "best of both worlds" could you just have the mounting spot exist on the two hole design - but be accessible through the duct?
3) Consider having the duct angled like the CWR ducts so the duct hose doesn't need to have a 45degree bend in it.

Other then that, keep up the good work!

-M
Old 09-13-16, 07:26 PM
  #19  
Junior Member

Thread Starter
 
djritz's Avatar
 
Join Date: May 2014
Location: California
Posts: 29
Likes: 0
Received 2 Likes on 2 Posts
I'll see what I can come up with to keep the part cost down, inlet/outlet areas similar and maintain the 3 hole pattern.
I've kept the overall part height as small as possible to make the tooling cheaper, as well as make the parts more versatile for wide wheel applications. I think it is probably smarter to have the duct attach to the a-arms with some slack than include a bend in the hard portion of the duct. If I were only designing this for a singular application I would definitely make the hard portion of the duct longer and hug the wheel/tire.

Routing would be similar to this, but less zip ties to the struts and more tie downs on the arms.




Originally Posted by MattGold
Couple suggestions...

1) Keep all three mounting points.
2) In order for "best of both worlds" could you just have the mounting spot exist on the two hole design - but be accessible through the duct?
3) Consider having the duct angled like the CWR ducts so the duct hose doesn't need to have a 45degree bend in it.

Other then that, keep up the good work!

-M
Old 09-13-16, 08:51 PM
  #20  
Form > Function

iTrader: (107)
 
MattGold's Avatar
 
Join Date: Dec 2003
Location: Metro Detroit
Posts: 1,645
Received 198 Likes on 100 Posts
Yeah - I'm with you. I was picturing a hose coming off the duct at an immediate angle. This changes my opinion.
Old 09-16-16, 08:01 PM
  #21  
Full Member

iTrader: (1)
 
13Bseries's Avatar
 
Join Date: Jan 2011
Location: Portland
Posts: 65
Likes: 0
Received 0 Likes on 0 Posts
Interest here
Old 09-18-16, 07:51 PM
  #22  
rotary amuse

iTrader: (12)
 
ZumSpeedRX-7's Avatar
 
Join Date: May 2003
Location: Massachusetts
Posts: 2,878
Received 237 Likes on 124 Posts
Interested as well
Old 10-09-16, 03:10 AM
  #23  
needs more track time...

iTrader: (13)
 
primerGrey's Avatar
 
Join Date: Sep 2005
Location: Menlo Park, CA
Posts: 325
Received 30 Likes on 12 Posts
Very, very interested.

Some suggestions:

- Keep the three hole design, but widen/spread-out the entry into the rotor eye so as to preserve the same 3" cross-sectional area as the hose. If the area is the same at each point, it won't throttle airflow.

Extra credit ideas:

- Provide a fitted entry duct as well. Here is an example of what I mean:
https://www.rx7club.com/3rd-generati...5/#post5619354

- There is one problem I haven't seen anyone try to solve - routing the hose past the sway bar mount usually means the tire rubs it (and unless it is wrapped in sheet metal, wears through it) when at full steering lock. A solid duct piece could be designed to fit, at the sway bar, with circular entry, a flattened cross section that preserved the same cross-sectional area as the hose past the area where the tire could rub, and a circular exit.

So the entire ducting solution would be a fitted entry duct, a piece of hose from this entry to a middle "flattened" piece at the sway bar mount, and another flex hose from the flattened piece to the rotor eye entry. If done in this way, I think the flex hose would last a lot longer.
Old 10-13-16, 02:44 AM
  #24  
FD enthusiast


iTrader: (3)
 
patriick's Avatar
 
Join Date: Nov 2002
Location: San Diego, CA
Posts: 672
Received 0 Likes on 0 Posts
Interested!
Old 10-14-16, 07:32 PM
  #25  
Full Member

iTrader: (26)
 
idiazs's Avatar
 
Join Date: Aug 2008
Location: U.S.A
Posts: 203
Received 4 Likes on 4 Posts
Interested depending on pricing and fitment for a re front


Quick Reply: Custom FD Front Brake Ducts



All times are GMT -5. The time now is 11:14 PM.