kimbo wrote:UweM3 wrote:oldbimmer wrote: ..
As for heat cycles - what's your method? I normally just go for a farily gentle drive for 2 or or 3 consecutive evenings.
I heat them up once to as much temp as I can get on the road and let them FULLY cool down. Not really life essential, but I think it helps a little bit to minimise wear afterwards.
Used to do much the same as the above when we were racing on Dunlop DO1J's - one out lap to knock off the release compound, two laps at full race speed and an in lap to cool them before removing them, letting them cool right down and wrapping in black bin liners or similar. Normally did this at the end of Friday practice, ready for final run in quallifying on Saturday and then the two races. Same tyres were then used for practice at the next meeting, by which time the front pair would be shot.
Definately made a difference to these tyres under race conditions, non heat cycled tyres would 'go off' much quicker and the rubber would smeared across the tyre, if you see what I mean.
Kim
Exactly the same in karting.
We would fit race rubber during testing and do 3 laps building up speed and then a slow in lap, bag them and store them ready for a race meeting.
Something else we always did and I still believe is relevant for any tyre is storing them at a constant temperature when not in use.
It might not seem pedantic, but stopring your race rubber in a garage or car that will see 10 or 20 deg C changes in temperature during a warm day and cold night will heat cycle your rubber. And that will be exactly what tends to harden them.
I used to keep my kart tyres in a duvet in my wardrobe (sad I know), but now remove my race rubber and wrap them in a few old blankets in the corner of the garage to minimise any great changes in temperaute.....
Ste.