Along these lines, does anyone make a rear antiroll bar for a Rotoflex
GT6?
Mike http://pages.prodigy.net/mikeross/
'66 Spitfire
'70 GT6+ (maroon)
'70 GT6+ (green)
'68 Spitfire (body for GT6 convertible project)
'69 GT6 parts car (for project)
-----Original Message-----
From: John Kipping <johnkipping@inet.net.nz>
To: spitfire-enthusiast@yahoogroups.com
<spitfire-enthusiast@yahoogroups.com>
Date: Wednesday, October 10, 2001 4:27 AM
Subject: Re: [spitfire-enthusiast] anti roll bar to lower wishbone
link bushings
>Nolan,
>To some exent my thinking is because Triumph did it, ie thicker roll
bar
>only with swing spring. (in fact a rotoflex car with a standard roll
bar has
>chronic understeer). My own Herald has a swing spring with a thick
roll bar
>and it certainly feels safer on hard cornering. Overall a thicker
roll bar
>everything else being equal will increase understeer, hopefully the
whole
>idea is to give fairly neutral handling, which is what ST where
probably
>trying to achieve. What I don't like is the Triumph Tune attitude of
change
>for changes sake, sell the punter something to benefit TT rather than
the
>customer.
>John Kipping
>----- Original Message -----
>From: Nolan Penney <npenney@erols.com>
>To: <spitfire-enthusiast@yahoogroups.com>
>Sent: Wednesday, October 10, 2001 1:38 PM
>Subject: Re: [spitfire-enthusiast] anti roll bar to lower wishbone
link
>bushings
>
>
>> Not necessarily John. It is certainly true that increasing the
front roll
>> stiffness while keeping all other things equal will increase the
loading
>on the
>> front tires, and increase their tendency to overload.
>>
>> But (and this is a big but), if the reduction in camber change from
>increased
>> roll stiffness offsets the losses, one gains cornering power.
>>
>> There is also the comfort factor, which can be significant. Many
are not
>> comfortable driving hard in a car that rolls excessively. I am one
of
>those
>> folks. I can drive harder in a car that does not roll the body as
much as
>one
>> that does roll greatly. In that case, while actual skidpad numbers
may be
>> worse with the stiffer front sway bar, lap times are faster because
the
>driver
>> can more comfortably drive the car harder.
>>
>> No claims of experience or expertise on the Spitfire specifically
with
>this
>> observation. I do not have the breadth of Spitfire experience to
get into
>the
>> specifics on this one.
>>
>> John Kipping wrote:
>>
>> > Colin,
>> > A thicker front roll bar increases understeer and was fitted to
>compensate
>> > for the lower roll stiffness from the rear swing spring and
therefore
>makes
>> > the handling worse if fitted on its own. Early Spitfires
themselves
>aren't
>> > bad for handling in any case but they still benefit from a swing
spring,
>> > Heralds and Vitesses actually benefit more as their centre of
gravity is
>> > higher.
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