Looking for a lap guide for the full 5-mile Thunderhill track? Well, so am I, but I can't find one because the 2-mile west track is too new! See here or here for the 3-mile guide. I did, however, find these videos,
It then occurred to me that I can combine the two, along with the track map, to create my own guide. The in-car video and commentary are invaluable but I feel the aerial photos really help with visualization.
I am a beginner, so everything here is base on carsashimi's video and description. Thanks carsashimi! As he noted, he has a high grip, low power and weight car, so you'll need to adjust accordingly (brake earlier).
I'm going to skip straight to turn 9C, connecting the east and west tracks.
Instead of turning left for the east track, brake hard and late for the right turn into the connector. The goal is to setup for the next corner by apexing at the very exit of corner.
Note: aerial photo has cones blocking off 9C.
Quick throttle out then brake a 2nd time up the hill. Get to the right side of track before turning left into apex.
Then it's full throttle down the hill.
My personal note: carsashimi mentions in the video about a change in the track surface as you head downhill so make sure your steering is fairly straight. I didn't include this in the original draft, thinking it wasn't a big deal. Wrong. It's almost like a ridge that runs down the track. If you are coming across this at high speed it's scary and potentially will get you in trouble. Luckily I'm Captain Slow so I didn't have an incident here but becareful.
Braking from high speed here. Once you hit the left berm you can get back on power.
Get slightly left of mid-track, braking in straight line. Touch inside left (might consider this the first apex).
Let car move out wide to the right, then 2nd apex late in the corner.
Get to the left for 5W. Just a little brake, then on throttle.
Flat thru the esses, keeping eyes up. Exit about mid-track for 6W.
Some people go wide here but he goes slight left of center.
Apex is at the far end of berm but not at the very end. Full throttle gets you to right side of track.
Slow corner. Thread the car from right side to touch the left side.
Apex is a little past mid-point of berm.
Full throttle uphill for 8W. Lift for early apex at start of berm.
This gets you to the left to line up for 9W.
Another slow corner. Apex then back on throttle.
You don't need too much braking into 10W but some. Apex slightly after middle of berm.
Get as close to wall as possible for next corner.
A series of turns getting you to the 10C connector and the east track. First part is high speed, small amount of braking needed. Hit apex, back on throttle for just a bit, then brake.
End up about middle of track before turning right into the 1st apex, connect that in a smooth arc to the 2nd apex by which time you should be getting back on the throttle.
2nd apex the 2nd berm in photo below.
Connector back to east track.
Up the hill, setup on left side of the track.
Brake for turn back into east track.
This is draft 1. Hopefully I'll have more time and find more videos to refine the guide.