David Legangneux spoke to Jean-Marc Gounon in the pit-lane
at Le Mans on Saturday afternoon – regarding tyres and engines
for the Courage LC70s.
talked about the tyres:
Spa, we had new products that I've asked for with a precise architecture
and rigidity. It was a huge satisfaction. They trusted me. We've
gone in the same direction we've taken with Michelin. At Spa, we've
proven it works well and they last, that’s the important thing.
We'll have new products, both softer and harder around our new base,
the tyre used at Spa.
we'll use some new tyres, really hard, to see if we have to build
new hard tyres for Le Mans. I'm very satisfied with the way our
collaboration with Yokohama has progressed recently.
done any testing since Spa, because the tyres are built in Japan
so it takes a long time to have them here.
we've also had a briefing about wet tyres, because on this point,
we're really far away. There has been a big programme of work on
that and that will come for Le Mans. They look to be very motivated
to develop tyres for this kind of car. The Yokohamas worked well
in GT with Porsches.
is a new person. He doesn't come from racing, so he has a purely
technical vision of the tyre, no preconceived ideas. I'm not an
engineer, so it's difficult to explain how it works, so I've made
some tables to compare what Michelin did and what we do.
I've done a double stint, without any fall off in performance. Afterwards,
we have cut the tyre to examine it and we would have been able to
do a third stint.
"The hot weather is the only worry we have,
so this is why we have hard tyres here. We have now a good medium
tyre and a good hard tyre so now we have to find if we need harder
tyres for extreme temperatures."
The David Legangneux asked J-M Gounon about the vibrations
from the Mugen engine:
"We have had the same problem as Lammers had, of course, but
as Courage has a three year factory deal, we have a 4,5 L and Lammers
had a 4 L, so it's not exactly the same problem. The frequency is
different. The vibration we've had at the first race has disappeared
for the second race, as we've had 500 rpm more and more bhp."
first year of the partnership, the car is new, we're here to do