Jump to content


Photo

Big Power Vxt Project


  • Please log in to reply
4722 replies to this topic

#1961 Nev

Nev

    Nipper's Minion

  • PipPipPipPipPipPipPipPip
  • 11,587 posts
  • Gender:Male
  • Location:Bristol
  • Interests:Rock climbing, skiing, kayaking, surfing, mountaineering, budgies, chess, practical mechanics.

Posted 12 October 2013 - 05:38 PM

Yellow ????

 

Can't say, it's secret squirrel.



#1962 CHILL Gone DUTCH

CHILL Gone DUTCH

    I ADMIT BATMAN THINKS HE IS QUICKER THAN ME

  • PipPipPipPipPipPipPipPip
  • 13,727 posts
  • Gender:Male
  • Location:UK

Posted 12 October 2013 - 05:40 PM

 

Yellow ????

 

Can't say, it's secret bumblebee.

 

 



#1963 VXT Tim

VXT Tim

    No it's not a Lamborghini!

  • PipPipPipPipPipPipPip
  • 11,421 posts
  • Gender:Male
  • Location:Derby

Posted 12 October 2013 - 06:16 PM

Nev did you end up getting a 1" arb?

#1964 Nev

Nev

    Nipper's Minion

  • PipPipPipPipPipPipPipPip
  • 11,587 posts
  • Gender:Male
  • Location:Bristol
  • Interests:Rock climbing, skiing, kayaking, surfing, mountaineering, budgies, chess, practical mechanics.

Posted 12 October 2013 - 06:27 PM

Nev did you end up getting a 1" arb?

 

Yes, it's deffo worth it, front end is much better now.



#1965 Bumblebee

Bumblebee

    .....

  • PipPipPipPipPipPipPip
  • 7,592 posts
  • Gender:Female
  • Location:York

Posted 12 October 2013 - 06:28 PM

Can confirm it's not me :)

#1966 VXT Tim

VXT Tim

    No it's not a Lamborghini!

  • PipPipPipPipPipPipPip
  • 11,421 posts
  • Gender:Male
  • Location:Derby

Posted 12 October 2013 - 06:30 PM

Must be luke :unsure: Cheers bud

#1967 Nev

Nev

    Nipper's Minion

  • PipPipPipPipPipPipPipPip
  • 11,587 posts
  • Gender:Male
  • Location:Bristol
  • Interests:Rock climbing, skiing, kayaking, surfing, mountaineering, budgies, chess, practical mechanics.

Posted 12 October 2013 - 06:46 PM

Must be luke :unsure: Cheers bud

 

Haha, his car must of rotted away under a canvas canopy by now, it hasn't moved for about 3 years !



#1968 VXT Tim

VXT Tim

    No it's not a Lamborghini!

  • PipPipPipPipPipPipPip
  • 11,421 posts
  • Gender:Male
  • Location:Derby

Posted 13 October 2013 - 05:49 AM

Have you asked for a before pull on their rollers?

#1969 siztenboots

siztenboots

    RaceMode

  • 26,611 posts
  • Gender:Not Telling
  • Location:Surrey
  • Interests:french maids

Posted 13 October 2013 - 05:55 AM

 

Nev did you end up getting a 1" arb?

 

Yes, it's deffo worth it, front end is much better now.

 

 

yes, isn't it , like you have a load of downforce there



#1970 Nev

Nev

    Nipper's Minion

  • PipPipPipPipPipPipPipPip
  • 11,587 posts
  • Gender:Male
  • Location:Bristol
  • Interests:Rock climbing, skiing, kayaking, surfing, mountaineering, budgies, chess, practical mechanics.

Posted 13 October 2013 - 07:00 AM

Have you asked for a before pull on their rollers?

 

He did offer, I was ambivalent, maybe I should let him just to see how it compares to CS RR, though it's not a fair comparison as I've done a fair few breathing mods since it was on their rollers, notably the 4" inlet pipework and birdbox.



#1971 VXT Tim

VXT Tim

    No it's not a Lamborghini!

  • PipPipPipPipPipPipPip
  • 11,421 posts
  • Gender:Male
  • Location:Derby

Posted 13 October 2013 - 07:28 AM

Personally I would Nev.

#1972 VXT Tim

VXT Tim

    No it's not a Lamborghini!

  • PipPipPipPipPipPipPip
  • 11,421 posts
  • Gender:Male
  • Location:Derby

Posted 13 October 2013 - 10:59 AM

Which of the 5 holes have you set the arb in?

#1973 Nev

Nev

    Nipper's Minion

  • PipPipPipPipPipPipPipPip
  • 11,587 posts
  • Gender:Male
  • Location:Bristol
  • Interests:Rock climbing, skiing, kayaking, surfing, mountaineering, budgies, chess, practical mechanics.

Posted 13 October 2013 - 03:20 PM

Which of the 5 holes have you set the arb in?

 

It's on 4 out of 5, so almost at max stiffness. No point putting it on if you don't crank it up IMO.

 

I will probably put it on 5 out of 5 when I go under there to build the new splitter. Contrary to some people's guesswork on here, I do make the car corner hard and it certainly helps stop the front wheels from "flapping about" and gives more re-assurance round the mild or severe bends.

 

I am also thinking of reducing camber on the front wheels by putting more spacers in as the fronts are only 30% in contact with the ground. With the original  175mm wide tyre, that contact patch would have be more like 60% contact, however since widening the front wheels it has become apparent that not enough of the tyre is in contact with the tarmac IMO.



#1974 cnrandall

cnrandall

    Need to get Out More

  • PipPipPipPip
  • 943 posts

Posted 13 October 2013 - 05:29 PM

 

Which of the 5 holes have you set the arb in?

 

It's on 4 out of 5, so almost at max stiffness. No point putting it on if you don't crank it up IMO.

 

I will probably put it on 5 out of 5 when I go under there to build the new splitter. Contrary to some people's guesswork on here, I do make the car corner hard and it certainly helps stop the front wheels from "flapping about" and gives more re-assurance round the mild or severe bends.

 

I am also thinking of reducing camber on the front wheels by putting more spacers in as the fronts are only 30% in contact with the ground. With the original  175mm wide tyre, that contact patch would have be more like 60% contact, however since widening the front wheels it has become apparent that not enough of the tyre is in contact with the tarmac IMO.

 

 

Its going to understeer like a pig on anything above full soft on treaded tyres.



#1975 CocoPops

CocoPops

    SuperCharged Karting Super Hero

  • 17,180 posts
  • Gender:Male
  • Location:Thatcham, Berks

Posted 13 October 2013 - 05:42 PM

Have you asked for a before pull on their rollers?

  He did offer, I was ambivalent, maybe I should let him just to see how it compares to CS RR, though it's not a fair comparison as I've done a fair few breathing mods since it was on their rollers, notably the 4" inlet pipework and birdbox.

Surely you need a before and after to see the benefits and where it's been improved? thumbsup

#1976 VXT Tim

VXT Tim

    No it's not a Lamborghini!

  • PipPipPipPipPipPipPip
  • 11,421 posts
  • Gender:Male
  • Location:Derby

Posted 13 October 2013 - 05:57 PM

 

Which of the 5 holes have you set the arb in?

  It's on 4 out of 5, so almost at max stiffness. No point putting it on if you don't crank it up IMO.   I will probably put it on 5 out of 5 when I go under there to build the new splitter. Contrary to some people's guesswork on here, I do make the car corner hard and it certainly helps stop the front wheels from "flapping about" and gives more re-assurance round the mild or severe bends.   I am also thinking of reducing camber on the front wheels by putting more spacers in as the fronts are only 30% in contact with the ground. With the original  175mm wide tyre, that contact patch would have be more like 60% contact, however since widening the front wheels it has become apparent that not enough of the tyre is in contact with the tarmac IMO.  
  Its going to understeer like a pig on anything above full soft on treaded tyres.
Which hole for the goal would you suggest to start with Chris? I appreciate there are a few contributing factors.

#1977 Nev

Nev

    Nipper's Minion

  • PipPipPipPipPipPipPipPip
  • 11,587 posts
  • Gender:Male
  • Location:Bristol
  • Interests:Rock climbing, skiing, kayaking, surfing, mountaineering, budgies, chess, practical mechanics.

Posted 13 October 2013 - 06:22 PM

 

 

Which of the 5 holes have you set the arb in?

 

It's on 4 out of 5, so almost at max stiffness. No point putting it on if you don't crank it up IMO.

 

I will probably put it on 5 out of 5 when I go under there to build the new splitter. Contrary to some people's guesswork on here, I do make the car corner hard and it certainly helps stop the front wheels from "flapping about" and gives more re-assurance round the mild or severe bends.

 

I am also thinking of reducing camber on the front wheels by putting more spacers in as the fronts are only 30% in contact with the ground. With the original  175mm wide tyre, that contact patch would have be more like 60% contact, however since widening the front wheels it has become apparent that not enough of the tyre is in contact with the tarmac IMO.

 

 

Its going to understeer like a pig on anything above full soft on treaded tyres.

 

 

Thanks Chris, I was assuming the understeer was coming from the lack of roll (and hence contact patch) on the outboard tyre due too much camber. I will try the bar at a lower setting too then and see how it goes.

 

I was intending to put my micro camera low down in the wheel arch to see how hard I have to corner before the tyre goes flat on a bend. I know that the previous owner of the car had the geometry fiddled with, so it might be possible that he removed quite a few spacers.

 

At least this stuff is easy to fiddle about with and experiment with. I just need wait 2 weeks to get the car back, assuming it survives the dyno.


Edited by Nev, 13 October 2013 - 06:29 PM.


#1978 cnrandall

cnrandall

    Need to get Out More

  • PipPipPipPip
  • 943 posts

Posted 13 October 2013 - 09:04 PM

 

 

 

Which of the 5 holes have you set the arb in?

  It's on 4 out of 5, so almost at max stiffness. No point putting it on if you don't crank it up IMO.   I will probably put it on 5 out of 5 when I go under there to build the new splitter. Contrary to some people's guesswork on here, I do make the car corner hard and it certainly helps stop the front wheels from "flapping about" and gives more re-assurance round the mild or severe bends.   I am also thinking of reducing camber on the front wheels by putting more spacers in as the fronts are only 30% in contact with the ground. With the original  175mm wide tyre, that contact patch would have be more like 60% contact, however since widening the front wheels it has become apparent that not enough of the tyre is in contact with the tarmac IMO.  
  Its going to understeer like a pig on anything above full soft on treaded tyres.
Which hole for the goal would you suggest to start with Chris? I appreciate there are a few contributing factors.

 

 

With the 1" bar its full soft on most applications unless you are on slicks.  



#1979 cnrandall

cnrandall

    Need to get Out More

  • PipPipPipPip
  • 943 posts

Posted 13 October 2013 - 09:05 PM

 

 

 

Which of the 5 holes have you set the arb in?

 

It's on 4 out of 5, so almost at max stiffness. No point putting it on if you don't crank it up IMO.

 

I will probably put it on 5 out of 5 when I go under there to build the new splitter. Contrary to some people's guesswork on here, I do make the car corner hard and it certainly helps stop the front wheels from "flapping about" and gives more re-assurance round the mild or severe bends.

 

I am also thinking of reducing camber on the front wheels by putting more spacers in as the fronts are only 30% in contact with the ground. With the original  175mm wide tyre, that contact patch would have be more like 60% contact, however since widening the front wheels it has become apparent that not enough of the tyre is in contact with the tarmac IMO.

 

 

Its going to understeer like a pig on anything above full soft on treaded tyres.

 

 

Thanks Chris, I was assuming the understeer was coming from the lack of roll (and hence contact patch) on the outboard tyre due too much camber. I will try the bar at a lower setting too then and see how it goes.

 

I was intending to put my micro camera low down in the wheel arch to see how hard I have to corner before the tyre goes flat on a bend. I know that the previous owner of the car had the geometry fiddled with, so it might be possible that he removed quite a few spacers.

 

At least this stuff is easy to fiddle about with and experiment with. I just need wait 2 weeks to get the car back, assuming it survives the dyno.

 

 

TBO it sounds like your car needs a proper baseline setup so you can draw a line from which to work from.



#1980 Nev

Nev

    Nipper's Minion

  • PipPipPipPipPipPipPipPip
  • 11,587 posts
  • Gender:Male
  • Location:Bristol
  • Interests:Rock climbing, skiing, kayaking, surfing, mountaineering, budgies, chess, practical mechanics.

Posted 14 October 2013 - 04:03 AM

TBO it sounds like your car needs a proper baseline setup so you can draw a line from which to work from.

 

 

Quite possibly, it's always hard to know how my own car is handling in comparission to others unless one is driving lots of other Elise chassied cars all the time. I've only driven 2 other VXes in the last year.

 

Another key thing I "feel" at the moment is that I my bump steer is poor at the moment, I know the solution(s) to this and am considering getting hub carriers with raised hubs. So, in the back of my mind I feel there is little point in a professional setup if this will all change yet yet again.

 

Also, as always, I am keen on experimenting and learning this stuff myself, one of the key reasons for having the car is to gain an understanding about these things as I go along. Advice/input from people such as yourself is genuinely welcome :)


Edited by Nev, 14 October 2013 - 04:25 AM.





1 user(s) are reading this topic

0 members, 1 guests, 0 anonymous users