Club Cobra Gas - N Exhaust  

Go Back   Club Cobra > Manufacturers, Engine Builders, tools, and parts. > BackDraft Racing ---

MMG Superformance
Nevada Classics
Main Menu
Module Jump:
Nevada Classics
Nevada Classics
MMG Superformance
MMG Superformance
Advertise at CC
Banner Ad Rates
MMG Superformance
MMG Superformance
March 2024
S M T W T F S
          1 2
3 4 5 6 7 8 9
10 11 12 13 14 15 16
17 18 19 20 21 22 23
24 25 26 27 28 29 30
31            

Kirkham Motorsports

Like Tree9Likes

Reply
 
LinkBack Thread Tools Rate Thread Display Modes
  #1 (permalink)  
Old 11-27-2019, 07:30 AM
Mark Brye's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Mar 2006
Cobra Make, Engine: BDR354/FMS392
Posts: 382
Not Ranked     
Default Whats new in the RT4?

I see that Backdraft now has an RT4 out. Anyone know what the changes are from the RT3? About what chassis number did the RT4 changeover start?
ront49 likes this.
Reply With Quote
  #2 (permalink)  
Old 11-28-2019, 05:34 AM
CC Member
Visit my Photo Gallery

 
Join Date: Dec 2017
Location: Harrison, AR
Cobra Make, Engine: BDR, 418
Posts: 175
Not Ranked     
Default Rt4

Haven't heard of the RT4 but to get the correct and immediate answer, call Reg Dodd at Backdraft Racing.... I'll check their web page and see if one is listed.
Reply With Quote
  #3 (permalink)  
Old 12-02-2019, 09:33 AM
CC Member
Visit my Photo Gallery

 
Join Date: Aug 2018
Location: Montville, NJ
Cobra Make, Engine: BACKDRAFT COBRA
Posts: 13
Not Ranked     
Default

Fro my understanding, the new RT4 chassis will consist of the following:
Ford 8.8 diff 3.55 ratio locker
The rear suspension layout/geometry is BMW E92 M3
The rear uprights are BMW E92 M3
The rear of the chassis will now have a true coil over
The floor of the chassis will now be steel
The cockpit will have more space as there will be no need for a trailing arm mount
The chassis will have a dropped floor
The chassis will come with a wide seat standard

Just be careful as they are slowly release some of these features in the RT4, not all these features are available on the current RT4's...the 2020 RT4 will probably have all of them, I will check with whomever you order yours before hands...I highly recommend you talk to Jay from VMS as he is the Maestro and the only expert in Backdrafts.

Best of luck
Reply With Quote
  #4 (permalink)  
Old 12-02-2019, 12:12 PM
CC Member
Visit my Photo Gallery

 
Join Date: Nov 2019
Location: St Joseph, MO
Cobra Make, Engine: Backdraft
Posts: 10
Neutral     
Default

Jay is building mine and has definitely been extremely patient and helpful with all of my questions. He said most likely mine will not go into production for a couple months so hopefully I will benefit from that and get these new options.
Reply With Quote
  #5 (permalink)  
Old 12-02-2019, 05:44 PM
Cashburn's Avatar
Backdraft Racing Dealer
Visit my Photo Gallery
Lifetime Contributor
 
Join Date: Dec 2004
Location: North Haven, CT
Cobra Make, Engine: Backdraft Racing
Posts: 5,115
Not Ranked     
Default

Price increase looming in 2020. Any deposits in by 12/24 will get all the RT4 upgrades at current pricing. RT4 model upgrades include:

All new components (NO REMANUFACTURED PARTS)
New Rear suspension design
Upgraded differential , Ford Traction-Lok diff with a 3.55 ratio.
Rear Coil over shocks
Steel floors
Dropped Footbox
Revised seat design
Revised Front struts
Revised rear axle design
427sohc and FredG like this.
__________________
IT'S NOT REAL. IT'S UNREAL.
VINTAGE MOTORSPORTS
888.427.1965 | www.vintagemotorsports.com
Reply With Quote
  #6 (permalink)  
Old 12-02-2019, 05:46 PM
Cashburn's Avatar
Backdraft Racing Dealer
Visit my Photo Gallery
Lifetime Contributor
 
Join Date: Dec 2004
Location: North Haven, CT
Cobra Make, Engine: Backdraft Racing
Posts: 5,115
Not Ranked     
Default

Quote:
Originally Posted by TheNewGuy View Post
Jay is building mine and has definitely been extremely patient and helpful with all of my questions. He said most likely mine will not go into production for a couple months so hopefully I will benefit from that and get these new options.
You’ll be in production in about a week. Arrival will be March - April.
__________________
IT'S NOT REAL. IT'S UNREAL.
VINTAGE MOTORSPORTS
888.427.1965 | www.vintagemotorsports.com
Reply With Quote
  #7 (permalink)  
Old 12-23-2019, 05:27 AM
LudicrousSpeed's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Nov 2008
Location: Oceanside, Ca
Cobra Make, Engine: ...
Posts: 201
Not Ranked     
Question

Quote:
Originally Posted by Cashburn View Post
Price increase looming in 2020. Any deposits in by 12/24 will get all the RT4 upgrades at current pricing. RT4 model upgrades include:

All new components (NO REMANUFACTURED PARTS)
New Rear suspension design
Upgraded differential , Ford Traction-Lok diff with a 3.55 ratio.
Rear Coil over shocks
Steel floors
Dropped Footbox
Revised seat design
Revised Front struts
Revised rear axle design
Is the Ford Traction-Lok a limited slip?
__________________
- Just call me Speed
Reply With Quote
  #8 (permalink)  
Old 12-23-2019, 12:36 PM
Cashburn's Avatar
Backdraft Racing Dealer
Visit my Photo Gallery
Lifetime Contributor
 
Join Date: Dec 2004
Location: North Haven, CT
Cobra Make, Engine: Backdraft Racing
Posts: 5,115
Not Ranked     
Default

Quote:
Originally Posted by LudicrousSpeed View Post
Is the Ford Traction-Lok a limited slip?
Yes it is.
__________________
IT'S NOT REAL. IT'S UNREAL.
VINTAGE MOTORSPORTS
888.427.1965 | www.vintagemotorsports.com
Reply With Quote
  #9 (permalink)  
Old 12-24-2019, 09:57 AM
Mark Brye's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Mar 2006
Cobra Make, Engine: BDR354/FMS392
Posts: 382
Not Ranked     
Default

This is really big news. I am surprised that there is not more talk about these upgrades. The differential and rear drivetrain always seemed to be a talking point and concern for people shopping for a cobra. I would think this RT4 puts that concern to rest.

Jay, will you have any pictures in your gallery of the new rear suspension, differential and rear suspension assembly on your site? Just wondering what this all looks like.

Thanks,

Mark
Reply With Quote
  #10 (permalink)  
Old 12-24-2019, 10:57 AM
Cashburn's Avatar
Backdraft Racing Dealer
Visit my Photo Gallery
Lifetime Contributor
 
Join Date: Dec 2004
Location: North Haven, CT
Cobra Make, Engine: Backdraft Racing
Posts: 5,115
Not Ranked     
Default

I believe Backdraft is working on updating their site to reflect the changes. We are waiting on the latest RT4s in production.
Hawkeye_Pearce likes this.
__________________
IT'S NOT REAL. IT'S UNREAL.
VINTAGE MOTORSPORTS
888.427.1965 | www.vintagemotorsports.com
Reply With Quote
  #11 (permalink)  
Old 12-28-2019, 04:54 AM
CC Member
Visit my Photo Gallery

 
Join Date: Jan 2009
Location: Harrison Twp, MI
Cobra Make, Engine: SPF Coupe #136, 427SR FI
Posts: 296
Not Ranked     
Default

Hi Mark

The comments herein about what is included is comprehensive. And it is true that they have been running changes during RT4 production.

A key reason to watch buying existing stock. There are MANY RT3s in inventory and some RT4s.

Most of our customers order to spec so as a result we only stock a few current models.

Happy to help you out!

Jeff

586.489.5990
jeff@nostalgicmotoring.com
nostalgicmotoringltd.com
Reply With Quote
  #12 (permalink)  
Old 12-29-2019, 04:16 AM
CC Member
Visit my Photo Gallery

 
Join Date: Jan 2009
Location: Harrison Twp, MI
Cobra Make, Engine: SPF Coupe #136, 427SR FI
Posts: 296
Not Ranked     
Default

Mark, here's a more exhaustive list of improvements over the RT3



Improved and stiffened chassis. Completely redesigned

Safer chassis (side impact protection) with better reinforcement to the outer body.

Metal floors instead of fiberglass

Fully adjustable BMW suspension

Improved sawyer geometry

Far better ride

Far better handling

Additional passenger compartment room

Additional driver compartment room

Wider seats

Drop drivers side floor for additionally leg room and through the windshield visibility

Limited slip Ford Motorsports differential now standard


Best regards

Jeff - Nostalgic Motoring
6t8stang and SGwick like this.
Reply With Quote
  #13 (permalink)  
Old 12-29-2019, 05:33 AM
Tom Wells's Avatar
Senior Club Cobra Member
Visit my Photo Gallery

 
Join Date: Mar 2000
Location: St. Augustine, FL
Cobra Make, Engine: E-M / Power Performance / 521 stroker / Holley HP EFI
Posts: 1,912
Not Ranked     
Default

Quote:
Improved sawyer geometry
Is that from the Pacific Northwest?

__________________
Wells's law of engine size: If it matters what gear you're in, the engine's too small!
Reply With Quote
  #14 (permalink)  
Old 12-29-2019, 07:48 AM
CC Member
Visit my Photo Gallery

 
Join Date: Dec 2015
Posts: 1,442
Not Ranked     
Default

"Improved sawyer geometry"

The only reference I can come up with on Sawyer Geometry is a vague reference to Sawyer measurements on Bicycle frames. I guess it could apply although it seems a stretch analogy.

Maybe its a coined term like "Frikalishious".
Reply With Quote
  #15 (permalink)  
Old 12-30-2019, 06:49 AM
Tom Wells's Avatar
Senior Club Cobra Member
Visit my Photo Gallery

 
Join Date: Mar 2000
Location: St. Augustine, FL
Cobra Make, Engine: E-M / Power Performance / 521 stroker / Holley HP EFI
Posts: 1,912
Not Ranked     
Default

On second thought, maybe it has to do with muffler bearings or blinker fluid?
__________________
Wells's law of engine size: If it matters what gear you're in, the engine's too small!
Reply With Quote
  #16 (permalink)  
Old 01-01-2020, 04:19 AM
CC Member
Visit my Photo Gallery

 
Join Date: Jan 2009
Location: Harrison Twp, MI
Cobra Make, Engine: SPF Coupe #136, 427SR FI
Posts: 296
Not Ranked     
Default

Mark and others,

In addition to the valuable feedback herein on VAST improvements of the RT4 over the RT3 I took pictures of the frame/suspension so you also had visual references.

RT3: https://spaces.hightail.com/receive/ewvX91hrX7

RT4: https://spaces.hightail.com/receive/Ioh185cVDw

Happy to help!

Jeff
6t8stang and spdbrake like this.
Reply With Quote
  #17 (permalink)  
Old 01-01-2020, 05:19 AM
CC Member
Visit my Photo Gallery

 
Join Date: Dec 2015
Posts: 1,442
Not Ranked     
Default

Thanks Jeff!

I don't really see any changes in the front suspension other than the new sway bar, although they're probably in there somewhere.

The center section looks cleaner and the multi mounting for the trans and sliders for the sidepipes are great. I see the dropped drivers foot box.

On the rear though the suspension looks amazing. I really love how the rear end geometry looks to stay aligned as it moves through its travel. Also the camber and Toe links adjustments.

Man that is one short driveshaft.

Are the rear brakes GM? Looks like it from the parking brake.

Last edited by spdbrake; 01-01-2020 at 06:48 AM..
Reply With Quote
  #18 (permalink)  
Old 01-02-2020, 04:18 AM
CC Member
Visit my Photo Gallery

 
Join Date: Jan 2009
Location: Harrison Twp, MI
Cobra Make, Engine: SPF Coupe #136, 427SR FI
Posts: 296
Not Ranked     
Default

Quote:
Originally Posted by spdbrake View Post
Thanks Jeff!

I don't really see any changes in the front suspension other than the new sway bar, although they're probably in there somewhere.

The center section looks cleaner and the multi mounting for the trans and sliders for the sidepipes are great. I see the dropped drivers foot box.

On the rear though the suspension looks amazing. I really love how the rear end geometry looks to stay aligned as it moves through its travel. Also the camber and Toe links adjustments.

Man that is one short driveshaft.

Are the rear brakes GM? Looks like it from the parking brake.
You are very welcome!

The stock front brakes are BMW and rear VW.

Take care

Jeff
Reply With Quote
  #19 (permalink)  
Old 01-04-2020, 10:59 AM
Cashburn's Avatar
Backdraft Racing Dealer
Visit my Photo Gallery
Lifetime Contributor
 
Join Date: Dec 2004
Location: North Haven, CT
Cobra Make, Engine: Backdraft Racing
Posts: 5,115
Not Ranked     
Default

Those photos are an RT3.5 ... true 4s have new coil over design in front.
427sohc likes this.
__________________
IT'S NOT REAL. IT'S UNREAL.
VINTAGE MOTORSPORTS
888.427.1965 | www.vintagemotorsports.com
Reply With Quote
  #20 (permalink)  
Old 01-05-2020, 08:29 AM
CC Member
Visit my Photo Gallery

 
Join Date: Jan 2009
Location: Harrison Twp, MI
Cobra Make, Engine: SPF Coupe #136, 427SR FI
Posts: 296
Not Ranked     
Default

Quote:
Originally Posted by Cashburn View Post
Those photos are an RT3.5 ... true 4s have new coil over design in front.
According to Reg the car shown (in the RT4 folder) is an RT4 (not an RT3.5). The front suspension change you maybe referring to is a different strut manufacturer for the front of the car. The suspension layout/design is not going to change. The company who makes the rear coil over in the RT4 will be making the front strut for BDR soon.

Jeff
Reply With Quote
Reply

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

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
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -7. The time now is 03:24 PM.


Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
The representations expressed are the representations and opinions of the clubcobra.com forum members and do not necessarily reflect the opinions and viewpoints of the site owners, moderators, Shelby American, any other replica manufacturer, Ford Motor Company. This website has been planned and developed by clubcobra.com and its forum members and should not be construed as being endorsed by Ford Motor Company, or Shelby American or any other manufacturer unless expressly noted by that entity. "Cobra" and the Cobra logo are registered trademarks for Ford Motor Co., Inc. clubcobra.com forum members agree not to post any copyrighted material unless the copyrighted material is owned by you. Although we do not and cannot review the messages posted and are not responsible for the content of any of these messages, we reserve the right to delete any message for any reason whatsoever. You remain solely responsible for the content of your messages, and you agree to indemnify and hold us harmless with respect to any claim based upon transmission of your message(s). Thank you for visiting clubcobra.com. For full policy documentation refer to the following link: CC Policy
Links monetized by VigLink