Derby Talk

Since you raised the possibility, why aren't the Max-V wheels made with tighter bores, then? I set the bore size to the smallest it could be and still fit the Pro-Hub Tool. Ah, hadn't thought of that. Sadly kind of forces everything down to a lowest common denominator, but what can ya do, right? :)

The reason for the size of our speed axles is to fit in BSA-size slots and holes. If the diameter was larger then they would be too tight. Awana axles are larger, but so are the slots on the Awana block. A better solution would be for BSA to reduce the diameter of the wheel bore to better fit it ax...

I know not everybody's rules allow for it, but slotting the head of the axle makes installation sooooo much easier.

I do like MV's axles a lot, but if they could just get a little bit thicker (e.g. like Awana axles), I'd love them even more.

An improved axle would be aces!

Also, I'd like them to start putting some kind of witness marks on the inner tread of the wheel, so as to better detect people removing material with a lathe or similar.

Very cool! Just might wanna take note that this couldn't run in a lot of Scout races unless the front was changed to not be concave, though.

VK, I apologize for any confusion I might have caused by writing something that caused you to write your 1st sentence. My intent was focused on the Dominant front wheel and the rear wheel that follows the Dominant front wheel. I understand the narrowing of the body of the car 1/16th of an inch is t...

I don't believe that narrowing the body at the DFW has much to do with keeping the raised wheel off the rail. That much is accomplished by the fact that the car is rail-guided. The narrowing is more to account for the fact that the car wants to ride uneven to the rail since the DFW is hugging it. Ho...

Nice light effects!

Whoda, do you attend any venues where you actually get to see your creations roll?

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?