Derby Talk

So cool, Whoda!

If it were me, I'd use a breadboard to get everything working, and only solder the final stuff after the bugs were ironed out.

Derby Evolution posted a photo of the new wheels. Imagine the white wheels with graphite all over them. :eek: https://scontent.fapa1-2.fna.fbcdn.net/v/t1.0-9/36176078_1080989785388176_7742285567357878272_n.jpg?_nc_cat=0&_nc_eui2=AeGB8RdOrHzebqajizg30ASUxAoEsv2RAgb-wMCsTcq90-r4gSKqyYwigNlqNSlq6ByqgR...

I would go with the Rejex.

You can also get a can of Max-Pro Heavy Duty Silicone spray. It works great on the axles (for use with krytox) and you can also spray it on a swab, wait 30 seconds for the propellant to evaporate and use it as a bore prep. For scout level stuff, it is great.

Hi paulg, I have heard from more than one source that Red Rocket is just Rejex brand wax, with some kind of colorant added to it. https://i.imgur.com/lDFVzjEm.png Whether or not this is true, I can tell you that Rejex makes a fine wax for wheel bores. Liquid Glass works well too. Either should do yo...

whodathunkit wrote: ↑

Mon May 28, 2018 4:20 pm

City of Manhattan Beach California... Community Pinewood Derby Day.
http://www.citymb.info/departments/park ... -derby-day

So...I guess that was today?

Adding alcohol to graphite doesn't seem like a worthy road to pursue. That said, there may be some potential for using an alcohol/tungsten-disulphide (WS2) mixture for coating the bores and hub surfaces prior to a graphite lube. https://www.lowerfriction.com/howto.php The key would be applying the p...

Vit K, have U been able to test run the different angles of dfw degree on your car? If so, how much of a difference has it made in your times? Just curious as I have much to learn. Thank U . I haven't really. I have theories on why a lot of bend is better than a little, but I haven't been able to d...

I usually run about 7-9 degrees on the DFW.

What I've heard the league racers say is akin to "As much bend as you can put on the front axle and still be able to get the wheel on."

We have a four lane Grand Prix track with a RaceMaster timer, but our starter switcher thingy (sorry for the technical lingo) is not working. The small piece of metal that triggers the timer when the cars are sent down the track does not start the timer. Any suggestions for a replacement part? Any ...

I gotta say, if you're gonna invest all that time and energy into making even a simple track, why not spend a few bucks for an actual car kit, with real wheels? I think the metal washers might eventually damage a wooden track.

I'm hoping to finally build a practice track this summer, but I thought I'd crib off of these plans here:

AaronS, I think I am starting to gravitate more to that way of thinking regarding BSA axles. I used to carefully file the ridges down, but now I just remove the flashing and polish the crimp marks smooth. Some folks on the league forums who race in the "Box Stock" division have suggested this is pre...

The Super Track site says each lane is 3.4 inches wide.

https://www.supertimer.com/track/supertrack.html

Have you had any issues with track straightness? I have heard some folks complain of a lack of rigidity from the plastic, so the track tends to meander.