Got my fox speed in the air and completed the mile from a standing start at the last Middlesex event - right about 87mph. For the guys doing all the cool engine work, use this as a reference: box stock engine, 29%caster, 10%nitro fuel, 8x8apc prop, 5-10mph wind.
If I play with props and get a perfect run on a calm, cool day, probably good for 90+mph.