[Mk2] [Turbo] mr2 handling at speed

Discussion and technical advice the SW20 MR2. 3S-GTE, 3S-GE, 3S-FE etc
Anything and everything to do with maintenance, modifications and electrical is in here for the Mk2.

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mattcambs
Posts: 2308
Joined: Thu Jul 13, 2006 9:59 pm
Location: Saffron Walden, Essex

Re: [Mk2] [Turbo] mr2 handling at speed

Post by mattcambs »

The Morris wrote:
anna wrote:
luthor1 wrote:Anna - since the co-efficient of friction is less than "1" then any gain made by pressure between the tyre and road is off-set more so by the increased lateral force on the vehicle. If the co-efficient is greater than "1" then cornering gains will be made by increased weight, but to the detriment of accelleration.


Okay - for added weight... If he could shift weight to the front though..., and at a lower centre of gravity, then everyones a winner ;)

Anyway, back to the posters question - have you had your wheels and tyres balanced? What pressure are you running at? How much 'dead zone' do you have in the steering when travelling at speed in a straight line?


33 rear 31 front

steering is fine.

Wheels and tyres are pretty new and balanced

It just seems to get a bit bouncy at higher speeds and the steering feels a bit light, almost as though it might take off. I guess it needs more downforce, but just wondered if this was a commen feature on MR2's


Yes it is a common feature
Andy Champ
Posts: 345
Joined: Fri Apr 15, 2005 11:02 pm

Re: [Mk2] [Turbo] mr2 handling at speed

Post by Andy Champ »

luthor1 wrote:Anna - since the co-efficient of friction is less than "1" then any gain made by pressure between the tyre and road is off-set more so by the increased lateral force on the vehicle. If the co-efficient is greater than "1" then cornering gains will be made by increased weight, but to the detriment of accelleration.


Rubber-to-road friction is non-linear with load - the coefficient of friction varies. That's why fat rubber works.

Can't see why making it heavier would improve grip. Anyone actually tried it? (I can see how it might affect balance though, weighting the front to decrease oversteer or just keep the wheels on the ground with lots of power)

I'm inclined to agree with Uffa Fox when he said (talking about boats incidentally) that "weight is only of any use in a steam roller".

Andy
rookie-racer
Posts: 650
Joined: Mon Jan 03, 2005 6:29 pm
Location: scotland

Re: [Mk2] [Turbo] mr2 handling at speed

Post by rookie-racer »

a small drop in front rideheight, and only the front, helps this as it increases the angle of the bonnet to the horizontal and generates a li'll more downforce, and preloading the springs :->
Gaz!
Posts: 319
Joined: Mon Feb 21, 2005 10:17 am
Location: Bristol

Re: [Mk2] [Turbo] mr2 handling at speed

Post by Gaz! »

Luther any update or pics of this? Realy intrested.
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