I will post times from a drag strip track tomorrow. I used 3 identical metal base C6R cars. Axle tubes on all. 1 with stock hot wheels axle, 1 with stainless steel head pins, and 1 with nickel plated steel dressmaker pins.
I also used Bob Smith super glue. I only used the accelerator on the axle tubes, but it fully cured in under 2 minutes! Without the accelerator, it fully cures in just 2 hours.
Here are pictures of everything so far.