As its way past midnight and with my preparations for the Le Mans trip starting early tomorrow...even though its not totally on topic.... a last reply.
Test I did at Mechelen was with both PT1323 and PT1171 G25 rubber tires as that was one of the other request from the clubs.
Very similar motivation as why Rockingham chose G25 rubber as their control tire over the Procomp sponge for the upcoming 6 hrs GT3 endurance. Costs
So for me an opportunity to kill two flies in one go 😇 Test for both Interseries and R'ham.
And yes the tendency for Sponge tires to generate grip under load can lead to the car dig in and tip the car out of the slot.
When we started GT3 6 years ago..most of the chassis were pretty stiff so not such a big problem.
As mentioned in the first DiSCA "Open" GT3 test post
the choice for Sponge was to give the cars more grip in the corners, specifically on the lane changers.
But over the years through a competition driven search for more grip (even on sponge) chassis have become more and more flexible and the cars with better set-up become more performant.
Which is exactly why we asked Scaleauto to produce their harder Procomp4 compound also for 1/32nd wheels...and to do separate donuts for them.
The first and so far only DiSCA GT3 race that ran them was last May at Suzuka. Guess what some racers complained about...lack of grip
Cars sliding when too much power was applied. (but offering the racer the possibility to correct /catch the slide.
It now took some racers/teams 90min of racing (and a bit of practice and Qualy) to wear down the 20,7mm wheels below GC required forth start of the next race (as prior to the 60min raced before)
Funny enough it were the same racers that previously burned through a set of Procomp3 in one hour that now wore down a set of Procomp4 in 90 minutes.
Nothing to do with level of competition as some of the top finishers managed to do both 90 minute races on one set.
Ok that's it for now.. more posts have been made while I was writing my last reply.... but signing off now. See you guys again...after Le Mans. I do wish everybody a very good weekend.
With kind regards