Originally Posted by
Odin544
So we may be starting up a foam tire class locally. We've already got a rubber tire class going good. Whats the best chassis to get for 200mm on foams? What foam tires work best? This will be on carpet.
Running in the UK nationals on foams various chassis (F109, F103, Roche, etc.) qualified within a few seconds of each other, apart from TQ which was easily won with a wide Exotek F1Ultra. I should also point out that it took a lot of time to get the F1Ultra handling right and it only really came good at the last rounds. The easy option is a Tamiya F103, not much tuning can be done with it but it works fine straight out of the box.
For foams my preference are 25 shore rears with 35 or 38 shore fronts depending on the track. From Tamiya I like the HBR soft rear and HBR medium front for lower grip carpet and Zac Project 25/37 shore tyres for high grip.
The standard Tamiya 54135/54136 premounts are pretty popular as well.