Jump to content
SAU Community

R35

LSX-438

By LSX-438,
in R35 GTR

 Share

Recommended Posts

LSX-438 Mentor

LSX-438

Posted
Posted (edited)

The greatest aspect of the R35 for me is, you can slap on some decent rubber, flash in your E85 tune (thaks M :thanks:) and run near supercar like times at the track. At the end of the day, road tyres back on and literally drive home in leather clad comfort, climate control and all the fruit. Not to mention TRUE road manners.

This sort of versatility is surely unmatched, let alone at this price.

BUT.. for you regular track goers, are any of you worried about not having a cage?

I wonder did Nissan anticipate this at all.

And btw, did they run a cage in their Nordschleife record setting attempts?

Does anyone have any info or data on the strength of the car?

They spent a lot of time engineering this car, I wonder how strong it is, or how it would "perform" in a decent shunt?

Who would know you think?

Edited by LSX-438
Link to comment
https://www.sau.com.au/forums/topic/332974-r35/
Share on other sites
Duncan Grand Master

Duncan

Posted
Posted

glad you are asking that question....your lap times at Eastern Creek are excellent but they reflect that the car is going extremely quickly. In fact you and Marek would have the fastest non-caged cars ever at that track I bet.

The reality is it will only take a single critical component failure and you are into the wall at 250+. I broke a castor rod there years ago, and I understand Stu had a wheel bearing seize just last week. It does happen, and then all you are is uncontrolled momentum.

I only know 3 gtrs locally that have been written off (Leehmuis, Quinn and Jones), all had full cages and all walked away from a destroyed car. Kel was in the car for one of those crashes and can confirm it hit hard but kept it's cabin protected.

No idea how you can judge the comparitive safety of caged vs uncaged, except remember that the uncaged car is designed to deal with the sorts of accidents that happen on the road, not things like big rollovers or straight on into a wall at well over road speeds.

Link to comment
https://www.sau.com.au/forums/topic/332974-r35/#findComment-5399308
Share on other sites
handbrake Veteran

handbrake

Posted
Posted

I agree with both Duncans.

I have been increasingly concerned of my own mortality. You can keep pushing the limits in this car so far and it feels so safe but as Duncan says, even if you keep within the limits of your experience, you are traveling so fast into and through some turns that all you need is one critical equipment failure to turn things around real fast. Especially if you are punishing the car regularly and therefore more likely for something to go snap.

I am getting a full cage at the end of the year, and have the boys at mercury trackside as well as inspect everything pre/post track days.

Link to comment
https://www.sau.com.au/forums/topic/332974-r35/#findComment-5399328
Share on other sites
Martin Donnon Mentor

Martin Donnon

Posted
Posted

We caged our GTR for this very reason. There is a point.....where you simply MUST have a roll cage thats to FIA spec to ensure you walk away from a track accident. We used some interesting design ideas to keep our cage compact, light, and strong without having it intrude overly on the driving experience. Everyone has their own thoughts on this, but I got out the old Statics manual and laid out the best truss I could for maximum stiffness and strength along with lowest bar count :)

Link to comment
https://www.sau.com.au/forums/topic/332974-r35/#findComment-5399417
Share on other sites
09GTR Collaborator

09GTR

Posted
Posted
We caged our GTR for this very reason. There is a point.....where you simply MUST have a roll cage thats to FIA spec to ensure you walk away from a track accident. We used some interesting design ideas to keep our cage compact, light, and strong without having it intrude overly on the driving experience. Everyone has their own thoughts on this, but I got out the old Statics manual and laid out the best truss I could for maximum stiffness and strength along with lowest bar count :)

Martin, what exactly is involved with putting a cage in. Is my daily driver gone?

Link to comment
https://www.sau.com.au/forums/topic/332974-r35/#findComment-5399522
Share on other sites
Martin Donnon Mentor

Martin Donnon

Posted
Posted

Everyone has their own idea of what makes a cage.....

DD is possible, however you need to know what you are doing with the design to make it work. A traditional roll cage will make your car a PITA. A well thought out one will make it DD. Its a tough question to answer, like 'how long is a piece of string'....DD is perfectly possible :)

Link to comment
https://www.sau.com.au/forums/topic/332974-r35/#findComment-5399713
Share on other sites
Martin Donnon Mentor

Martin Donnon

Posted
Posted

A good FIA standard CAMS approved cage shouldnt seriously detract from the value of the car. It will make it more desirable to those that want to use it in Tarmac rallying as this kind of cage is a minimum requirement :)

To give you an idea - we were able to integrate a structural roll cage into our GTR - without cutting any trim, save for around 5mm adjustment of the glovebox. The stock door trims fit, the stock seats fit (if you wanted them to), the front legs go past the dash without any cutting or 'chopping' The only thing you cant put back in without modification is the rear seats, however the idea would be to pad out the back Spec V style. As I said there are roll cages....and then there are roll cages :blush:

Link to comment
https://www.sau.com.au/forums/topic/332974-r35/#findComment-5399758
Share on other sites
Trozzle Grand Master

Trozzle

Posted
Posted
I only know 3 gtrs locally that have been written off (Leehmuis, Quinn and Jones), all had full cages and all walked away from a destroyed car. Kel was in the car for one of those crashes and can confirm it hit hard but kept it's cabin protected.

Peter Leemhuis?

Link to comment
https://www.sau.com.au/forums/topic/332974-r35/#findComment-5403129
Share on other sites
Duncan Grand Master

Duncan

Posted
Posted

Yes, Pete (sorry about the spelling lol). and that car was repaired and is doing gt cup now afaik. the other 2 are spare parts at best.

I would suggest checking carefully before assuming you can have a cams and road legal cage in the car. CAMS cages have to either be built to one of a couple of standard designs, or be fully modelled by an engineer to prove it meets the requirements.

I don't know the road engineering rules in each state but there are requirements about removeable side intrusion bars and minimum distance from bars to driver's head.

Best to talk to an engineer in your state to confirm how or if a cams cage can be legal.

Finally, under CAMS rules scruitineers can knock back a car with a non-approved cage, even if a cage is not a requirement for the event (ie they deem a non-compliant cage may be more dangerous than no cage at all). Make sure it is CAMS approved.

Link to comment
https://www.sau.com.au/forums/topic/332974-r35/#findComment-5403894
Share on other sites
NickR33 Grand Master

NickR33

Posted
Posted

surely you could get away with a much less comprehensive cage for a track car? (as opposed to one used for tarmac rallies)

most tracks have pretty good run off these days and tyre walls do a pretty good job at absorbing impact... that said there are some places at Sandown I wouldn't want to have something on the car break!

so are you mainly worried about a rollover?

would the 35's benefit from a bit more stiffness... they seem like they're pretty good in that area already?

Link to comment
https://www.sau.com.au/forums/topic/332974-r35/#findComment-5404671
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • Kapr
      RB20DE NEO smallbox clutch.

      By Kapr · Posted

      For once a good news  It needed to be adjusted by that one nut and it is ok  At least something was easy But thank you very much for help. But a small issue is now(gearbox) that when the car is stationary you can hear "clinking" from gearbox so some of the bearing is 100% not that happy... It goes away once you push clutch so it is 100% gearbox. Just if you know...what that bearing could be? It sounding like "spun bearing" but it is louder.
    • GTSBoy
      Mistakes were made, my R34 Story

      By GTSBoy · Posted

      Yeah, that's fine**. But the numbers you came up with are just wrong. Try it for yourself. Put in any voltage from the possible range and see what result you get. You get nonsense. ** When I say "fine", I mean, it's still shit. The very simple linear formula (slope & intercept) is shit for a sensor with a non-linear response. This is the curve, from your data above. Look at the CURVE! It's only really linear between about 30 and 90 °C. And if you used only that range to define a curve, it would be great. But you would go more and more wrong as you went to higher temps. And that is why the slope & intercept found when you use 50 and 150 as the end points is so bad halfway between those points. The real curve is a long way below the linear curve which just zips straight between the end points, like this one. You could probably use the same slope and a lower intercept, to move that straight line down, and spread the error out. But you would 5-10°C off in a lot of places. You'd need to say what temperature range you really wanted to be most right - say, 100 to 130, and plop the line closest to teh real curve in that region, which would make it quite wrong down at the lower temperatures. Let me just say that HPTuners are not being realistic in only allowing for a simple linear curve. 
    • Kinkstaah
      Mistakes were made, my R34 Story

      By Kinkstaah · Posted

      I feel I should re-iterate. The above picture is the only option available in the software and the blurb from HP Tuners I quoted earlier is the only way to add data to it and that's the description they offer as to how to figure it out. The only fields available is the blank box after (Input/ ) and the box right before = Output. Those are the only numbers that can be entered.
    • GTSBoy
      Mistakes were made, my R34 Story

      By GTSBoy · Posted

      No, your formula is arse backwards. Mine is totally different to yours, and is the one I said was bang on at 50 and 150. I'll put your data into Excel (actually it already is, chart it and fit a linear fit to it, aiming to make it evenly wrong across the whole span. But not now. Other things to do first.
    • Kinkstaah
      Mistakes were made, my R34 Story

      By Kinkstaah · Posted

      God damnit. The only option I actually have in the software is the one that is screenshotted. I am glad that I at least got it right... for those two points. Would it actually change anything if I chose/used 80C and 120C as the two points instead? My brain wants to imagine the formula put into HPtuners would be the same equation, otherwise none of this makes sense to me, unless: 1) The formula you put into VCM Scanner/HPTuners is always linear 2) The two points/input pairs are only arbitrary to choose (as the documentation implies) IF the actual scaling of the sensor is linear. then 3) If the scaling is not linear, the two points you choose matter a great deal, because the formula will draw a line between those two points only.
×
×
  • Create New...