Do I need an RTDbrace or RTVbrace for Auto-X? - LotusTalk

FIL · 09-04-2009, 08:19 PM

I have and SC and run hoosiers with a hard suspension.

Do I need either an RTDbrace or RTVbrace? If so, which one should I get?

What about an oil pan and fuel tank?

evansp60 · 09-05-2009, 07:04 PM

I suggest you do one or the other.
The stock Lotus mounts will not withstand the
strain of highspeed/highG loads in tight fast corners.
If you spin or catch a wheel there is a good chance you'll
snap the bolt currently holding your toe-link. I've seen 2 cars
crash as a result of this bolt shearing. Neither driver was injured,
neither car was severly damaged (lucky) but both were avoidable
by installing the brace. RTD is more secure as it uses the transmission
mount, RTV does not utilise the transmission mount and as a result is
not as secure. If you can afford the RTD buy it, if you move this mount
then you've pretty much destroyed the rear end of your car as it's very strong.

Randy Chase · 09-06-2009, 04:59 PM

It is a good idea.

Many people running SCCA Stock Classes do not use a brace, and so far have no problem. But if you can, I would.

I did. Lotus told me to.

FIL · 09-15-2009, 08:10 PM

Good to know. I can afford to go with the RTD brace. Looks like another weekend car project. YAY!

I love calling home from work and my wife saying "there is a box for you."

shinoo · 09-16-2009, 09:54 AM

Smart move. Just to set the record straight, the RTDbrace is better but the RTVbrace still puts these joints in double shear and have performed perfectly. Both have heims that are rated to the same load rating.

We choose to put an RTVbrace on our Project Nirvana Elise as it will do the job and is plenty safe.

Bryannelsonlaw · 09-16-2009, 10:00 AM

Is the RTD brace beneficial on a track pack Exige S for autocrossing? Can this be used on an ASP car and be within the rules?

Ryno · 09-18-2009, 09:43 AM

I think the std track pack brace should be more than enough. It's the cars that don't have any brace that should be concerned.

FLKeith · 09-28-2009, 02:23 PM

What class are you in with these braces? They are certainly not stock class but do they also bump you out of ASP?

FIL · 10-03-2009, 09:00 PM

My guess is that the brace will not knock you out of ASP.

I would read the rules to double check.

I run XP because of the supercharger.

09-04-2009, 08:19 PM	#1 (permalink)
FIL Serial Thrilla Join Date: Jun 2006 Posts: 236	Do I need an RTDbrace or RTVbrace for Auto-X? I have and SC and run hoosiers with a hard suspension. Do I need either an RTDbrace or RTVbrace? If so, which one should I get? What about an oil pan and fuel tank? __________________ 05' Elise - BWR supercharger, Quaife LSD, Nitron Race Triple Adjustable, LETSLA, Larini Decat, Larini Exhuast, ACT HDSS, Fidanza flywheel, V2 Fuel Tank, V2 Steering Arms, BWR sway bar, desnorkled, ForcedFed CF splitter, Manly's engine mounts, S111 harness bar, Schroth harness w/ S111 seat grommets, Oil Drain Valve, Painted Black Diffuser, Braille battery, Custom Battery Switch 05' Corvette - Z51 Convertible - 630hp 6.6L [DON'T YOU JUDGE ME!!!] (SOLD!)

09-05-2009, 07:04 PM	#2 (permalink)
evansp60 Registered User Join Date: Feb 2006 Posts: 73	RTD vs RTV I suggest you do one or the other. The stock Lotus mounts will not withstand the strain of highspeed/highG loads in tight fast corners. If you spin or catch a wheel there is a good chance you'll snap the bolt currently holding your toe-link. I've seen 2 cars crash as a result of this bolt shearing. Neither driver was injured, neither car was severly damaged (lucky) but both were avoidable by installing the brace. RTD is more secure as it uses the transmission mount, RTV does not utilise the transmission mount and as a result is not as secure. If you can afford the RTD buy it, if you move this mount then you've pretty much destroyed the rear end of your car as it's very strong.

09-06-2009, 04:59 PM	#3 (permalink)
Randy Chase Registered User Join Date: Apr 2002 Location: San Diego and where ever the roads lead Posts: 28,175 Images: 761	It is a good idea. Many people running SCCA Stock Classes do not use a brace, and so far have no problem. But if you can, I would. I did. Lotus told me to. __________________ * V E R I T A S * A E Q U I T A S * No Longer the ADMIN here, please do not PM me asking for help. Thanks! http://www.facebook.com/randychase 1991 Toyota MR2. AutoX Beast 2006 Noble M400. Track weapon. 2009 Rossion Q1. Monaco Orange. Canyon Carver. In build: 2009 Toniq R (300whp? 1100 pounds?). Chrome Orange. Lexus GX-470 tow vehicle. On Order: Lotus Evora Next: McLaren MP4-12C

09-15-2009, 08:10 PM	#4 (permalink)
FIL Serial Thrilla Join Date: Jun 2006 Posts: 236	Good to know. I can afford to go with the RTD brace. Looks like another weekend car project. YAY! I love calling home from work and my wife saying "there is a box for you." __________________ 05' Elise - BWR supercharger, Quaife LSD, Nitron Race Triple Adjustable, LETSLA, Larini Decat, Larini Exhuast, ACT HDSS, Fidanza flywheel, V2 Fuel Tank, V2 Steering Arms, BWR sway bar, desnorkled, ForcedFed CF splitter, Manly's engine mounts, S111 harness bar, Schroth harness w/ S111 seat grommets, Oil Drain Valve, Painted Black Diffuser, Braille battery, Custom Battery Switch 05' Corvette - Z51 Convertible - 630hp 6.6L [DON'T YOU JUDGE ME!!!] (SOLD!)

09-16-2009, 09:54 AM	#5 (permalink)
shinoo Project Nirvana Elise Join Date: Mar 2003 Location: Temecula, CA Posts: 2,617	Smart move. Just to set the record straight, the RTDbrace is better but the RTVbrace still puts these joints in double shear and have performed perfectly. Both have heims that are rated to the same load rating. We choose to put an RTVbrace on our Project Nirvana Elise as it will do the job and is plenty safe. __________________ shinoo sector 111 - tasty bits for your elise & exige

09-16-2009, 10:00 AM	#6 (permalink)
Bryannelsonlaw Registered User Join Date: Jul 2008 Posts: 29	Is the RTD brace beneficial on a track pack Exige S for autocrossing? Can this be used on an ASP car and be within the rules?

09-18-2009, 09:43 AM	#7 (permalink)
Ryno Registered User Join Date: Aug 2004 Posts: 141	I think the std track pack brace should be more than enough. It's the cars that don't have any brace that should be concerned. __________________ www.jjsons.com

09-28-2009, 02:23 PM	#8 (permalink)
FLKeith Registered User Join Date: Aug 2009 Posts: 17	What class are you in with these braces? They are certainly not stock class but do they also bump you out of ASP?

10-03-2009, 09:00 PM	#9 (permalink)
FIL Serial Thrilla Join Date: Jun 2006 Posts: 236	My guess is that the brace will not knock you out of ASP. I would read the rules to double check. I run XP because of the supercharger. __________________ 05' Elise - BWR supercharger, Quaife LSD, Nitron Race Triple Adjustable, LETSLA, Larini Decat, Larini Exhuast, ACT HDSS, Fidanza flywheel, V2 Fuel Tank, V2 Steering Arms, BWR sway bar, desnorkled, ForcedFed CF splitter, Manly's engine mounts, S111 harness bar, Schroth harness w/ S111 seat grommets, Oil Drain Valve, Painted Black Diffuser, Braille battery, Custom Battery Switch 05' Corvette - Z51 Convertible - 630hp 6.6L [DON'T YOU JUDGE ME!!!] (SOLD!)

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