MitsuStyle MitsuStyle

Go Back   MitsuStyle > Tech > Brakes / Body / Suspension

Reply
 
Thread Tools Display Modes
Old 03-17-2014   #1
s1ngletracker
 
s1ngletracker's Avatar
 

Join Date: Oct 2005
Location: The land of the next-gen HMMWV
Drives: A BMW
Posts: 1,875
Anyone interested in Cobra adapter brackets

I've got a design i'm working on to install Mustang Cobra front brakes onto 1g DSM knuckles.

These will be similar to the RTM racing brackets, but will not require the silly spacers and will be lighter and stronger. Should be quite a bit cheaper as well.

I had an initial prototype 3D printed, working on a second revision which i'm really happy with so far. Final part will be made with Aluminum. You'll need other things to install cobra brakes; brake line, hardware, maybe hub spacer for the rotor (looking to potentially have these made as well)

Please let me know if you're interested so I can get an idea on quantities to manufacture.
__________________
Style's automotive engineer

Sponsored by DB Performance (dbptuning.com)

A dsm, a bimmer, a DORGE CUMMINZ, and a non running DSM race car... for now.

Last edited by s1ngletracker; 03-17-2014 at 12:05 PM..
s1ngletracker is offline   Reply With Quote
Old 03-17-2014   #2
Halon
Pewp Champion
 
Halon's Avatar
 

Join Date: Nov 2003
Location: Blaine
Drives: Teh Bean
Posts: 12,309
Send a message via AIM to Halon
Re: Anyone interested in Cobra adapter brackets

I ran these brakes with the RTM kit on my 1G, loved the setup and would definitely recommend it to anyone considering a front brake upgrade. Glad someone local is making the brackets, if I still had a DSM I'd totally purchase a set from you. Good luck with it!
__________________
B-Man - FlexFuel Mafia
1991 TSi AWD E85 - BEP S362, DSMLink V2, Built 2.0L Idle Vid 628hp Graph 541hp Vid 10.93@137 Vid
1992 SC300 E85 - BW 84-75, Vlad Infinity, NA-T, 6spd Idle Vid 709hp Graph 709hp Vid 11.1@131 Vid
2006 Bayliner 195 - Carbed 5.0 Top Speed Test
Halon is offline   Reply With Quote
Old 03-17-2014   #3
s1ngletracker
 
s1ngletracker's Avatar
 

Join Date: Oct 2005
Location: The land of the next-gen HMMWV
Drives: A BMW
Posts: 1,875
Re: Anyone interested in Cobra adapter brackets

Thanks! And thank you again for the RTM measurements! It's taken me way too long to get to this project.

These rotors are monsters, 13". And pad selection for the cobra calipers is amazing, way better than DSM or 3/S. Maybe even better than EVO? The rotor selection is nice, the one pictured below is a centric high carbon rotor with E-coated top hats and vanes. The calipers are made of aluminum and overall lighter than DSM iron units.

Here is a picture of my mockup with my inital 3D printed prototype:

'

I did a ton of custom brake stuff on our chumpcar honda, glad I get to do some stuff with DSMs now.
__________________
Style's automotive engineer

Sponsored by DB Performance (dbptuning.com)

A dsm, a bimmer, a DORGE CUMMINZ, and a non running DSM race car... for now.

Last edited by s1ngletracker; 03-17-2014 at 12:43 PM..
s1ngletracker is offline   Reply With Quote
Old 03-17-2014   #4
Goat Blower
aka Goodbye
 
Goat Blower's Avatar
 
Asteroids Champion! Beach Squirter Champion!
Join Date: Oct 2003
Location: under the car
Drives: Taylor Made R15
Posts: 7,765
Re: Anyone interested in Cobra adapter brackets

How about a set for mounting the VR4 calipers with those rotors?
__________________
2009 Corvette Z51-SOLD
1992 Mitsubishi Eclipse GSX-SOLD
2013 BMW Z4-Current summer hooptie
2017 GMC Yukon-Current winter hooptie

Goat Blower is offline   Reply With Quote
Old 03-17-2014   #5
Kracka
R U DTF bro?
 
Kracka's Avatar
 

Join Date: Aug 2003
Location: Oak Point, TX
Drives: C8 Stingray Z51
Posts: 20,620
Re: Anyone interested in Cobra adapter brackets

Sounds similar to the Baer Track kit I ran on my 1G.
__________________
Quote:
Originally Posted by Murlo26 View Post
I agree with Kracka.
Kracka is online now   Reply With Quote
Old 03-17-2014   #6
Halon
Pewp Champion
 
Halon's Avatar
 

Join Date: Nov 2003
Location: Blaine
Drives: Teh Bean
Posts: 12,309
Send a message via AIM to Halon
Re: Anyone interested in Cobra adapter brackets

This is nearly identical to the Baer kit, just costs much less and you have more rotor options since its Mustang rotors. Like he mentioned, being Mustang components the selection is huge and very affordable. Also just about any local parts store will have parts in stock on the shelf if in a bind you need a new rotor or pads ASAP. Steve just sell your VR4 parts and run these
__________________
B-Man - FlexFuel Mafia
1991 TSi AWD E85 - BEP S362, DSMLink V2, Built 2.0L Idle Vid 628hp Graph 541hp Vid 10.93@137 Vid
1992 SC300 E85 - BW 84-75, Vlad Infinity, NA-T, 6spd Idle Vid 709hp Graph 709hp Vid 11.1@131 Vid
2006 Bayliner 195 - Carbed 5.0 Top Speed Test
Halon is offline   Reply With Quote
Old 03-17-2014   #7
turbotalon1g
 
turbotalon1g's Avatar
 

Join Date: Mar 2005
Location: Blaine, MN
Drives: '91 Automagic
Posts: 13,908
Send a message via AIM to turbotalon1g
Re: Anyone interested in Cobra adapter brackets

Very nice. I like that they drop weight vs DSM stuff.
__________________
Aaron/brownman/big brown.
'91 Automagic.
'02 Z06
Please leave feedback - http://www.dsmtuners.com/forums/itrader.php?u=58309
turbotalon1g is offline   Reply With Quote
Old 03-17-2014   #8
Kracka
R U DTF bro?
 
Kracka's Avatar
 

Join Date: Aug 2003
Location: Oak Point, TX
Drives: C8 Stingray Z51
Posts: 20,620
Re: Anyone interested in Cobra adapter brackets

The Baer 1G kit also used Cobra rotors & pads. I forget the year range, but the kit instructions told you to buy pads/rotors for a 'XX-'XX Mustang Cobra if you needed replacements. The Baer 2G kit used Corvette rotors.
__________________
Quote:
Originally Posted by Murlo26 View Post
I agree with Kracka.
Kracka is online now   Reply With Quote
Old 03-17-2014   #9
s1ngletracker
 
s1ngletracker's Avatar
 

Join Date: Oct 2005
Location: The land of the next-gen HMMWV
Drives: A BMW
Posts: 1,875
Re: Anyone interested in Cobra adapter brackets

The calipers were $50 each for new raybestos units with brackets too (no core charge). Good luck finding DSM/VR4 calipers for that much

The pad selection issue is huge for me, as this setup will be used on a couple track cars.

I could conceivably make adapters for all kinds of calipers. This just seemed like the best option and what I wanted to use. I usually just end up making extra stuff and doing the work to offset the cost of the stuff I want.

next project: rear subframe bushings
__________________
Style's automotive engineer

Sponsored by DB Performance (dbptuning.com)

A dsm, a bimmer, a DORGE CUMMINZ, and a non running DSM race car... for now.

Last edited by s1ngletracker; 03-17-2014 at 02:22 PM..
s1ngletracker is offline   Reply With Quote
Old 03-17-2014   #10
Halon
Pewp Champion
 
Halon's Avatar
 

Join Date: Nov 2003
Location: Blaine
Drives: Teh Bean
Posts: 12,309
Send a message via AIM to Halon
Re: Anyone interested in Cobra adapter brackets

Quote:
Originally Posted by Kracka View Post
The Baer 1G kit also used Cobra rotors & pads. I forget the year range, but the kit instructions told you to buy pads/rotors for a 'XX-'XX Mustang Cobra if you needed replacements. The Baer 2G kit used Corvette rotors.
Interesting and thanks for the info. When I was doing my research I had heard while the calipers are the same, their mounting cradle is just at a slightly different offset, which in turn made the rotors at a slightly different offset, which meant you had to continue to use their rotors. Maybe they changed the design, or maybe it only applied to the 1g or the 2g kit, or maybe the info I read was incorrect (imagine that).

Either way, you end up with a setup nearly identical to the Baer kit, for almost half the cost.

Quote:
Originally Posted by s1ngletracker View Post
The calipers were $50 each for new raybestos units with brackets too (no core charge). Good luck finding DSM/VR4 calipers for that much
Yep, and for those of us that are impatient they're likely available same day or sitting right on the shelf at any of the big name auto parts stores! Price, availability, and numerous options are what make this setup so great in my opinion.
__________________
B-Man - FlexFuel Mafia
1991 TSi AWD E85 - BEP S362, DSMLink V2, Built 2.0L Idle Vid 628hp Graph 541hp Vid 10.93@137 Vid
1992 SC300 E85 - BW 84-75, Vlad Infinity, NA-T, 6spd Idle Vid 709hp Graph 709hp Vid 11.1@131 Vid
2006 Bayliner 195 - Carbed 5.0 Top Speed Test

Last edited by Halon; 03-17-2014 at 04:08 PM..
Halon is offline   Reply With Quote
Old 03-17-2014   #11
Speedfreak
 

Join Date: Jul 2004
Location: MN
Drives: four tires
Posts: 1,608
Re: Anyone interested in Cobra adapter brackets

I'm interested. Whats the time frame? I'd like to have something bought/received within two months (sooner the better) if possible?

I was going to buy some 1g 3S/Vr4 calipers etc and do Cobra rotors etc for a similar price rebuilt caliper.

Don't really have a preference either way, as I don't have direct knowledge of either in real world track time, and both should be better than 2g calipers/rotors etc.
__________________
NSX - S480/Built motor
GSX - 571whp/490wtq
Sienna
Speedfreak is offline   Reply With Quote
Old 03-17-2014   #12
s1ngletracker
 
s1ngletracker's Avatar
 

Join Date: Oct 2005
Location: The land of the next-gen HMMWV
Drives: A BMW
Posts: 1,875
Re: Anyone interested in Cobra adapter brackets

I'd like to have at least a few sets made within a few weeks.

If anyone here is a machinist, please LMK.
__________________
Style's automotive engineer

Sponsored by DB Performance (dbptuning.com)

A dsm, a bimmer, a DORGE CUMMINZ, and a non running DSM race car... for now.
s1ngletracker is offline   Reply With Quote
Old 03-18-2014   #13
goodhart
Transmission destroyer
 
goodhart's Avatar
 

Join Date: Feb 2007
Location: Cambridge
Drives: G37, 91 TSi
Posts: 7,150
Send a message via MSN to goodhart
Re: Anyone interested in Cobra adapter brackets

How do these compare to Evo Brembos? They can be had for decent prices now.
__________________



Quote:
Originally Posted by scheides View Post
I swing from the nuts of cold hard data. Anything less is a guess.
goodhart is offline   Reply With Quote
Old 03-18-2014   #14
Goat Blower
aka Goodbye
 
Goat Blower's Avatar
 
Asteroids Champion! Beach Squirter Champion!
Join Date: Oct 2003
Location: under the car
Drives: Taylor Made R15
Posts: 7,765
Re: Anyone interested in Cobra adapter brackets

Hmm, maybe this is the way to go. They don't look as good as VR4 or Evo brakes, but performance and cost most important at this point. Just bought my next turbo, should be here by Friday.
__________________
2009 Corvette Z51-SOLD
1992 Mitsubishi Eclipse GSX-SOLD
2013 BMW Z4-Current summer hooptie
2017 GMC Yukon-Current winter hooptie

Goat Blower is offline   Reply With Quote
Old 03-18-2014   #15
s1ngletracker
 
s1ngletracker's Avatar
 

Join Date: Oct 2005
Location: The land of the next-gen HMMWV
Drives: A BMW
Posts: 1,875
Re: Anyone interested in Cobra adapter brackets

I don't think they are as good as EVO brakes. Evo brakes are $185 each for fronts, as far as I can tell (rock auto). Would be pretty sweet to have 4 piston fixed calipers though.

My machinist is going to look over my CAD model tonight.
__________________
Style's automotive engineer

Sponsored by DB Performance (dbptuning.com)

A dsm, a bimmer, a DORGE CUMMINZ, and a non running DSM race car... for now.
s1ngletracker is offline   Reply With Quote
Old 03-18-2014   #16
goodhart
Transmission destroyer
 
goodhart's Avatar
 

Join Date: Feb 2007
Location: Cambridge
Drives: G37, 91 TSi
Posts: 7,150
Send a message via MSN to goodhart
Re: Anyone interested in Cobra adapter brackets

What year cobra will this use? Any idea on price point yet?
__________________



Quote:
Originally Posted by scheides View Post
I swing from the nuts of cold hard data. Anything less is a guess.
goodhart is offline   Reply With Quote
Old 03-18-2014   #17
s1ngletracker
 
s1ngletracker's Avatar
 

Join Date: Oct 2005
Location: The land of the next-gen HMMWV
Drives: A BMW
Posts: 1,875
Re: Anyone interested in Cobra adapter brackets

I'm not sure yet. The issue is that the RTM brackets are probably just plasma/laser cut steel and these will be CNC'd ally. I'm waiting to get an estimate from my machinist, i'm hoping they won't crazy expensive.

I'll be doing some light FEA analysis on these too
__________________
Style's automotive engineer

Sponsored by DB Performance (dbptuning.com)

A dsm, a bimmer, a DORGE CUMMINZ, and a non running DSM race car... for now.

Last edited by s1ngletracker; 03-18-2014 at 02:35 PM..
s1ngletracker is offline   Reply With Quote
Old 03-18-2014   #18
Halon
Pewp Champion
 
Halon's Avatar
 

Join Date: Nov 2003
Location: Blaine
Drives: Teh Bean
Posts: 12,309
Send a message via AIM to Halon
Re: Anyone interested in Cobra adapter brackets

Goodhart, read this article if you haven't already. I tried to include all the info about the difference between the calipers for different years and models
http://www.dsmtuners.com/forums/arti...brakes-1g.html

My only comment about the 4 piston calipers is that the 4 piston calipers will be wider on the outside, so there's more potential for wheel/spoke interference. Non-issue as long as your get the right offset wheels, but just something to keep in mind when going 4 piston. For Evo components, I don't own an Evo so I don't know but are their caliper/rotors/pads available to the point that you can just drive to your local Napa/Autozone and they'll have them all sitting on the shelf? That was a huge plus for me for the Cobra's. I'm sure the Evo's stop better, but the Cobra's had plenty of stopping power for me when I was trapping high 130's. For me it was the balance of performance, price, options, and immediate availability that led to my decision to use them.

And Steve I really liked how they look, I think they look nicer than VR-4 brakes. But that's all a matter of individual perspective I suppose

__________________
B-Man - FlexFuel Mafia
1991 TSi AWD E85 - BEP S362, DSMLink V2, Built 2.0L Idle Vid 628hp Graph 541hp Vid 10.93@137 Vid
1992 SC300 E85 - BW 84-75, Vlad Infinity, NA-T, 6spd Idle Vid 709hp Graph 709hp Vid 11.1@131 Vid
2006 Bayliner 195 - Carbed 5.0 Top Speed Test
Halon is offline   Reply With Quote
Old 03-18-2014   #19
s1ngletracker
 
s1ngletracker's Avatar
 

Join Date: Oct 2005
Location: The land of the next-gen HMMWV
Drives: A BMW
Posts: 1,875
Re: Anyone interested in Cobra adapter brackets

I actually have the early cobra caliper. Reason being, the piston diameters are about the same as DSM (~30mm i believe). I like keeping the brake pedal pretty stiff and have experience firsthand how your pedal ends up mushy (more travel for the same braking power) when you go bigger with caliper piston diameter and keep master cylinder bore the same.

I haven't investigated pad size but I believe these to be a bit bigger, and obviously the increase in braking torque and cooling capacity due to the bigger rotor. I can't imagine this setup won't be sufficient for even serious track use.

Although I realize looks and 'cool factor' are important to a lot of people.
__________________
Style's automotive engineer

Sponsored by DB Performance (dbptuning.com)

A dsm, a bimmer, a DORGE CUMMINZ, and a non running DSM race car... for now.

Last edited by s1ngletracker; 03-18-2014 at 03:08 PM..
s1ngletracker is offline   Reply With Quote
Old 03-18-2014   #20
s1ngletracker
 
s1ngletracker's Avatar
 

Join Date: Oct 2005
Location: The land of the next-gen HMMWV
Drives: A BMW
Posts: 1,875
Re: Anyone interested in Cobra adapter brackets

DSM 'big' brake pad:


Mustang cobra:


Evo 8:


Based on caliper alone, I'm guessing evo 8 is the best - 4 piston and bigger pad.

Evo Rotor is 12.6" and Cobra is 13".
__________________
Style's automotive engineer

Sponsored by DB Performance (dbptuning.com)

A dsm, a bimmer, a DORGE CUMMINZ, and a non running DSM race car... for now.

Last edited by s1ngletracker; 03-18-2014 at 03:04 PM..
s1ngletracker is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 01:02 PM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.