by mattb » Thu Nov 12, 2015 8:27 am
You won't have much fun running 1/24 stock cars with only 3 1/2 inch centers. You will also need a lot more outside aprons if you run stockers. You can run 1/24 on 3 1/2, Monogram and Revell both sold 1/24 sets using 1/32 track. That is the track they made, but it is not the optimum size like Carrera for bigger cars.
I have been a 1/24 collector and builder for 35 years and have had home setups using the old plastic track. Trust me, it just isn't the best with bigger cars. If you just want to test drive a bigger car every now and then, it will be fine, but it will be too tight for competitive racing. If you just stick to the 1/32 stuff, you'll be fine and have fun.