[SunnyHouTX]

Bondo, here's a few things to keep in mind from what I've been through with speed runs.

1. ESC will thermal after back to back full throttle, high speed passes. More often than not, this will happen when geared for speeds more than 60mph. The higher you go from there, the quicker you will thermal or even damage a motor after consecutive passes.

2. Get high quality batteries like Hyperion, Neu, Thunder Power, etc.. The gains you get from the better packs are very noticeable and they can take the stresses of speed runs well.

3. Do not fully lock front/rear diffs if you're using a car with suspension or a lot of chassis flex. You will lose control of the car very quickly.

4. Front splitter that PBO mentioned is something similar to what NASCAR uses in the front of the car which creates down force up front. This is definitely a must-have. (Oops... didn't make it to page 2 before I posted)

5. Do not use a fully covered bottom chassis plate. You must allow air from below the chassis vent upwards into the body cavity and then be quickly vented out the back. To that end, clear obstructions as much as possible to help airflow in the body cavity. Cutting vents in the back window, cutting out the panel where the tail lights would be, etc., will help.

6. Vehicle weight is not the enemy when it comes to speed runs. It will help keep the car on the ground.

7. Unless you run on a prepped track, grooved rubber tires with belts or capped rubber tires are a good option, especially on concrete. Rubber also works better in hot weather after the track and tires have warmed up a bit.

....

I'll add more as I recall more pointers.