I did two 9'10" in October - BtoG
One was my first ever lap on the 'ring and was in the damp and the second was in the wet......on R888's
Going again in April (19th), but the lap times will be longer as the lap includes the full 'ring lap plus the GP sprint circuit.
If I set up the Racelogic Performance Box correctly I can do lap times to 0.1 seconds and add up to 6 section times.
That would mean ...
Lap start/finish on the s/f line
section 1 end on joining the 'ring
section 2 end at the gantry
section 3 end at the bridge
section 4 end on joining the sprint circuit
The only sections that I'd miss would be a 3 second gap of the ring and a 3 second gap on the sprint circuit, but getting on and off the sprint circuit/'ring have their own bends, so the difference in reality is probably zero.
These sections should allow me to calculate the GP sprint circuit times, the full 'ring times and the bridge to gantry times.