Ed - My latest setup from the weekend,
I've done some interesting things on there now... and was on for a PB
at the track in the last final, even though the rear end was a little
loose. I think with the HPI's and a little more rear end grip, I could
be on for a 21 lapper (the holy grail for prostock at our track)
Craig- Interesting set up Ed, is the
front kick up for the bumpy track again or is the pro-dive deliberate?
Also is the track high speed as well as high grip? The set up looks
like it would understeer, compared to my old set up with the same
springs the front suspension is stiffer, the front roll centre higher,
but then you've countered it with the lowered front hubs, less rear
toe, more upright rear shocks, and medium rear sway bar, so less grip
all around and pretty stiff... I'll def print this out for our state
titles which are on a big grippy track
Ed - The kick up is for the bumpy
track, but also because the track I race on requires quite a bit of
mid-corner. Previous to the weekend I had been running it by using
0.5mm spacer under the front block. However, I wanted to lower the
front roll centre a bit for more front end, but keep the camber change
the same (i'll come back to this in a tick)... so removed 0.5mm from
underneath the rear block (so now only have 2.5mm under the block,
rather than the kit 3mm), whilst putting the front block on the deck.
Did exactly as I expected, and made for a much more positive front
end, whilst still retaining the good bump absorbtion, and mid corner
steering.
I did note that in one corner in particularly the rear end was
breaking loose a bit quick now though, so I'll counter that by going
back down to 1XA/1E on the rear end.
BTW, 1X/1F is still 3° toe in, i was just itching to try out the 1F
block to see what the change was.
The track I'm on is pretty tight, but also has decent grip too... so
going stiffer has two positive benifits, keeping corner speed up, and
improving reaction of the car. I'll agree that the way I have it setup
at the moment, it's pretty stiff... but it certainly seems to be
working. The 416 naturally has a lot of rear end grip, so you have two
options really, give more to the front (probably better for lower grip
tracks), or take some from the rear (better for the higher grip)...
guess which way I've gone.
As for the front roll centre, yes it is higher... however this is
countered by the increased angle of the link, which gives a lot more
camber change during the suspension movement... so in effect, you get
a response benifit from the high roll centre (nice), whilst also
retaining a good level of grip from the front tyres during roll thanks
to the camber change (again nice).
Pics
Gallery for round 4