Originally Posted by
zzoinks
My local track is starting a TT-02 class using mostly "box stock" rules, so I need to run the stock diff. I want to stiffen the front but the Tamiya 42247 diff putty looks to be out of stock or on backorder everywhere. Does anyone know of an alternative? I saw silly putty and even silicone earplugs mentioned elsewhere but couldn't tell if it was a joke or a viable alternative.
Originally Posted by chjosi
What is your experience with tires for parking lot racing in the summer?
Glad to read your track is getting started with this class, it's a lot of fun! What minimal upgrades are allowed?
For the front diff., I use the Tamiya 1 million grease. Kyosho also makes the same 1M and both companies have different lower viscosity greases or oil. The grease is thick and unlikely to leak out of even the stock diff.
For outdoor tires, I am currently using the Team Powers 34 Shore tires, but also have 32 and 36 available depending on the weather/temperature. Some people use Rush tires as well. I will add that a few months ago when the weather was overcast and the temperature was not as warm, the 34s took about a lap to warm up and get grip on the track. Initially the car would slide around like it's on ice so I don't recommend gunning the throttle when you first put the car down with cold tires. Doing a practice/formation lap or two helps a lot to warm up the tires just prior to our casual races. During the summer with warmer temperatures, 34s worked well and so do 36s.
You can also find my car setup in the video descriptions, hope this helps!