Derby Talk

That's what I would try first - shifting the lead forward until it doesn't wiggle.

What does everyone use for video compression (CODEC) for Race Replay? My playing around shows that DV Video Encoder produces good quality and plays back without issues. The file sizes are 50-100 MB per heat. (Using a Sony video camera if that matters). And...what playback setup works best? 1 replay ...

Graphite on a Krytox lubed car will slow it down.

Here's an old thread where our Krytox cars were slowed down just from the graphite on the track...let alone intentionally applying it to the wheel.

viewtopic.php?t=3649&highlight=

Wow!

How was the wing made?
Another Dave wants to know...

And you could fit a mini-turbofan jet engine in the hollow!

The lathe is the way to go. We thinned the wheel using 400 grit sandpaper, lots of water spray and a drill press / madrel. Very time conuming and the plastic is so soft - you will ruin a few wheels in the process. The bores are not pretty after this either. If I had my own lathe...and if it were leg...

I may have to re-think the shoebox...

One of the advantages of Krytox...
Very low static friction coefficient (almost negligible)

Nike Shoebox...

Not too intimidating for the Judges.

It is a RR, rear axles canted.

Why the plates? Better dispersion of the weight?

Edited to add track info.
The track is 48 foot Freedom Aluminum.

Car = extended wheelbase wing. body (wood) weight = 1.2 ounce. Weights = tungsten round. We're having trouble getting the weight back far enough w/o the wiggles. currentl COM is at 1.25 inch in front of rear axles. Any suggestions on getting the COM back? - Thin the car further (reduce wood weight t...

As mentioned - if you trust your drill press setup drill the rear axle holes with the cant. The cant will buy you some speed if done right. I don't recommend grooved axles when canting... Our test runs for this year's car: Straight rear axle alignment: 3.611 3.618 3.612 3.622 Average 3.616 with STDE...

Not in my opinion.

I did Reynolds Number calculations a few years ago.
These cars don't go fast enough to generate turbulent airflow.

But you might want to try and streamline the part sticking out (epoxy or wood putty to smooth the transition.

I do know that Graphite fills in cracks well!

Just look at my wife's kitchen sink...
White with Graphite filled scratches.
I keep telling her the gray will go away...

A "jump at the gate" sounds like lightened wheels may be present to me as well. We are allowed to run lightened wheels - and doing a frame by frame analysis of video shows the light wheels have a clear advantage at the start. Was there any serious wheel inspection at check in? One of my pe...