by slothead » Mon Feb 04, 2019 1:11 pm
This was a big deal when I used to race on a commercial track and in an oval racing club. There might be a car you were battling to get by, then on a power call being able to coast past them and restart ahead was an advantage. The guy who was tops at it was meticulous in how he set up his cars. Every week he'd tear everything down, clean everything, and reassemble. Motor alignment in the chassis, gear mesh, and axle-bushing fitting and alignment were things he spent a lot of time on. It's all about reducing friction where you can.
We also both made sure our front wheels were able to rotate independently since all 4 tires had to be weight bearing during tech inspection. That was easy to do on wheels with slide through axles and set screws by soldering a small washer on one side and removing the set screw. Not sure how to do this with press on plastic wheels, so using the nail polish technique might be the best bet.