Originally posted by JKA
Why? Its a TC afterall. What inherent difference makes it okay for nitro to run foam but not okay for electric?
Reasons nitro should run foams and electric run rubber on asphalt:
-Rubber tires are made to have heat cycles that last 5-8 minutes. This is when the rubber heats up and gives good traction. When the race is over, the tire is allowed to cool down and the molecules regain their tight structure. If a tire is pushed to hard, the tire will overheat, and start to "feather" and lines will form across the contact patch.
-Longer mains which will shred up rubber tires due to the intense heat cycle that last 45 minutes.
-A nitro heat usually last 8 minutes. 3 minutes of warm-up and 5 minutes of racing.
-Nitro cars need the traction that rubber tires create due to the high (for their scale) g-forces since they weight so much.
-A foam tire is the same tire from the first run, to the next to last run. So as the tire experiences the 9 heat cycles during the main, it will not change the setup as drastically as a rubber tire would. Only change would be the castor and roll-center.
-Most of the world runs rubber tires.
-Cheaper for the average track.
-Tires only experience one heat cycle per race.
-Electric cars are lighter so they don't need the foam traction.
-Foams will chunk
-Rubber tires will not chunk.