Originally Posted by mick71
Can anyone help me with tire compounds , i am running a 10r5 using a reedy 13.5t 2s stick lipo .I have been using the world gt spec jaco 2100 and 2110 tires.At the local track ( asphalt ) the car was a very loose , the track had no sugar water on it at the time. ( after work mid week ) do i need traction compound.I checked on the jaco website the tires are about purple shore. Should i use a softer tire (what compound), no one at this track runs a pan car .I have some silver dot tires that seem to work better.I am just getting back into pan cars and only just started using lipo/brushless combos.
PS: i know this is a 10r5.1 thread , but you guys have so much experience in this field.
For open tire racing on asphalt a good tire combination as Magenta Front and Pink Rear. Run them pretty large, around 57mm front and 59mm rear.
The real issue is the dusty track. Foam tires do not work well in dusty conditions. The tires load up and traction becomes nonexistent.
The best thing to do is blow off the track with a leaf blower and spray it lightly with sugary soda. The soda or sugar water is not there to make the track sticky. It is used to keep the dust down.
Next is how to treat the tires. You will need traction compound to go fast. Typically pan car traction compound application is a 3 step process.
1. Apply an aggressive solvent based traction compound to the area of the tire you want to treat. Usually the inside 3/4 of the fronts and full rears. Let that sit for 5 min.
The traction compound begins to dissolve the rubber and this softens it. If you run just traction compound the tires will coat themselves in dust in one lap. This is why you need step 2.
2. Apply some normal suntan lotion (the high SPF white or pink stuff with lanolin) on to the same areas of the tire you applied the traction compound to. You want an even, opaque covering of suntan lotion. Let that sit for as long as you can. It will turn clear and soak into the tire in a few minutes.
Something about the suntan lotion makes the tires shed the dust and lets your car maintain consistent traction for a full run (even 8 min in 1/12th).
3. Wipe the tires off thoroughly 5 min before you run. They will feel slimy at first then get slightly tacky.
How long the tires sit after wiping lets you tune how aggressive the car is in the first few laps. The longer they sit after wiping the stickier they will get. This will eventually make the car steer too hard and be undriveable until it gets a few laps in and settles in. If the car is too aggressive in the first few laps wipe later and go on to the track with the tires a little slimy. I have wiped right before running and run with greasy feeling tires and they hooked up perfectly.
I know this sounds crazy but we have been doing this this way for 30 years and it is still the best process.
I hope this helps...