ARB in relation to under steer

[Bazza]

in an effort to reduce understeer on the starlet i was advised to fit a rear ARB

many reports state that its one of the best handling mods to carry out

 

so duly ordered and fitted a rear ARB, not one to do things by half i also ordered an uprated front ARB, until then it was running a not so uprated front ARB

 

the difference was....no difference to be honest

and still suffering from understeer

this is contrary from many good reports on how much better it should have been

 

so my thoughts are maybe that by uprating the front ARB it counteracted uprating the rear

next thoughts were by fitting the not so uprated front ARB back to see what differences it might make

 

 

question time:

Is there a relationship between front and rear ARB's and understeer/oversteer ?

Is it feasible that one counteracted the other ?

 

 

[hms]

I'm probably totally wrong on this as my memory... now what were we talking about!

 

It's down to the relationship of front/rear ARB ratios.

A lighter ARB at the rear than the front would provoke oversteer. (If provoke is not too strong a work)

So if you uprated the rear and the front, the front/rear rations may have stayed the same/similar, and hetherefore no change on under/oversteer. You may have notices something tho' on body roll.

 

Anyone feel free to correct me!

 

h

[Tony]

Where is the understeer

1: Steady state

2: Corner entry

3: Corner exit

[Bazza]

Where is the understeer

1: Steady state

2: Corner entry

3: Corner exit

 

entry / exit

any large sweeps and understeer creeps in, lifting off to correct but thats loosing time !

[Tony]

Entry

I would reduce the front coils preload and remove the toe-out, exit increase preload in the rear shocks... If the problem is "steady state" then that's another completely different issue.

[Bazza]

Entry

I would reduce the front coils preload and remove the toe-out, exit increase preload in the rear shocks... If the problem is "steady state" then that's another completely different issue.

 

 

numpty question : whats "steady state"

[Mat]

try a run with the front bar disconnected.....

[Bazza]

try a run with the front bar disconnected.....

 

that would be easy enough to try

[CIH]

Entry

I would reduce the front coils preload and remove the toe-out, exit increase preload in the rear shocks... If the problem is "steady state" then that's another completely different issue.

 

 

numpty question : whats "steady state"

 

Think of longer, sweeping bends with fairly constant steeering input. Probably at higher speeds. Atleast, that's what I always understood it to mean..

[Tony]

Entry

I would reduce the front coils preload and remove the toe-out, exit increase preload in the rear shocks... If the problem is "steady state" then that's another completely different issue.

 

 

numpty question : whats "steady state"

 

Think of longer, sweeping bends with fairly constant steeering input. Probably at higher speeds. Atleast, that's what I always understood it to mean..

 

Spot on.....

[Tony]

Where is the understeer

1: Steady state

2: Corner entry

3: Corner exit

 

entry / exit

any large sweeps and understeer creeps in, lifting off to correct but thats loosing time !

 

Blimey that's a bit of everything..... Entry needs the bump turned down and as said the neg toe removed then possibily the rear rebound increased.