Our local track throws up all sorts of problems related to set up that seem to be unique to us, and I’m having real problems with my MOJO D3’s overheating. MOJO recommends 7 or 8 psi and the lowest that anyone local runs them is 16 psi. The guy with the lap record runs 20-22 psi depending on weather. I have not found any pressure that results in the 2 psi increase that people keep saying I should see when I come off the track. Today I mounted a new set of D3’s, inflated to 16 psi and set an amazing lap time on lap 2-then it was all downhill from there. When I came off the track, temp of centre of tread was 84 degrees celsius and from what I can tell, anything over 60 C results in poor lap times. Any ideas how to keep temps down? Did I ruin a new set of tires by getting them too hot?
It’s possible that everyone locally simultaneously is wrong. ;)
Also possible your lap record holder set his best lap on lap two and then fell off too.
I agree that your pressures are too high. As Rene said, if the kart comes in on lap 2 and then falls off rapidly, your pressures are simply too high. The tire is designed for half the air you’re running. Keep in mind that air affects the way the tire physically works too, and changes the contact patch.
Ok, here is a follow up tech question for all of you. When I started karting, I wanted my kart to look different than what everybody else was running so I had all my low volume wheels powder coated a different color. Is it possible that the powder coating is insulating the tire and air inside the tire from the cooling air flowing past the wheel?