Hi Jon,
I have standard XR2 front and 1100 fiesta rear shocks and springs on
mine with Toyo R888s and although I've still to try a track day, I have
driven it VERY hard on the road. The handling is very predictable and
sure footed. However, when I first got the car it performed very
similar to the way you describe - when I removed the front struts,
there was almost no resistance in them at all and the spirings had
compressed to almost an inch shorter (they weren't lowered ones). The
suspension change coupled with replacing 10 year old tyres transformed
the car. It still runs on rubber bushes as well - My point is that we
all know that the 2+2 can be a really good handling car, so it's not an
inherent design fault of the model, therfore you need to have a good
look at everything on your car - nuts, bolts, bushes, springs, dampers,
etc, etc.
Cheers
Bob Craig
>----Original Message----
>From: [email protected]
>Date: 21/03/2012 23:24
>To: <[email protected]>
>Subj: Re: [Quantum Owners] Fw: 2+2 handling problem
>Well thanks Bobby and Michael, yes it was a case of lift off oversteer
which in normal cases when driving something like a 205 pug (of which I
have many track miles experience of) means you just reapply throttle
till understeer and then lighten said throttle, however the Quantum
joggles about and does not settle in any direction making it a car that
requires constant action to guide where you want it, and this time the
oversteer took over savagely.
>Heavy acceleration would on no account make a FWD car oversteer unless
something broke!
>I may sound big headed but actually had 2 lap records and a Hill
record to my name so on no acccount would I heavy brake on a corner
either.
>I would say it was almost a problem on the road too as my Mondeo
handles and corners far better.
>Plus adding weight as suggested until the car is dulled down !! is not
an option.
>I can live with the torque steer from the turbo power happily, its the
basic feel that is the problem.
>Perhaps the only way is to play with spring rates and get a set of
adjustable shocks.
>The Quantum is on 5 year old Yoki 309's at 23psi rear and 26 front.
>I think it would benefit from stiffer dampers as the car is fitted
with near new standard ones.
>I was hoping someone else had been down this path and had solved it or
is it just my car?
>Cheers
>Jon
> ----- Original Message -----
> From: [email protected]
> To: [email protected]
> Sent: Tuesday, March 20, 2012 11:42 PM
> Subject: Re: [Quantum Owners] Fw: 2+2 handling problem
> In a message dated 20/03/2012 22:58:17 GMT Standard Time, jon.
[email protected] writes:
> so I went the 1.4 front and 1100 rear set up which was a whole lot
better however I am still unhappy with it as its joggly
> Maybe the first thing to bear in mind is that the suspension of the
Fiesta was designed with a view to the car being used with 4 adults on
board weighing around about 160 lbs with a further 120 lbs in the boot
by way of luggage plus further weight on a roof rack. Then take into
account that the body of the Fiesta might be 200 lbs heavier than the
2+2 If you carried a similar weight in the 2+2 the suspension would
doubtless joggle less.
> 'Front wheel drive cars should understeer' a reasonable assumption
and the standard version of the Fiesta probably would but, before you
set about changing things it might be as well to check through any
other changes you might have made to the car, as compared with the
Fiesta on which it was based and also to recall whether there was
anything unusual about the Goodwood incident.
> Did the car oversteer because of it's set up or was there any other
input, heavy braking, or acceleration which might have provoked the
oversteer. Having done this you may then have to decide for yourself,
or factors like tyre pressure that might have altered the cars response
whether you want a car which is ideal for track days but a pain for
ordinary motoring or a car which handles well and rides well on
ordinary roads but needs a bit more care and forethought when being
driven on a track.
> What you decide to do,or change, is, of course, entirely up to you
but remember that the development programme that lead to the base model
being the way it was was the result of many thousands of hours testing
and may well have involved comparison of hundreds of shock absorbers,
to name but one component.
> Michael
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>IMPORTANT NOTE: All information presented herewith is provided on an
"As Is" basis, without warranty or the implication thereof. Neither the
Quantum Owners Club nor the individuals associated with the Quantum
Owners Club or in the preparation of the above information shall have
any liability to any person or entity with respect to liability, loss,
or damage caused or alleged to be caused directly or indirectly by the
instructions contained within this or related message(s).
