Derby Talk

It is great to have a new option for an inexpensive timing system for those with some basic DIY electronics skills. Though, on your minimal timing system, it (and others like it) do have a drawback that people should be aware of. If there ends up being a problem with the timer communications to the ...

@Byiana - For building these cars, we are only drilling into wood, to make holes for the axles to go into. The idea of using stiff drill bits is to keep the bit from following the grain lines, going off the desired drill line.

Have you tried contacting Indy, who created that timer?

Vitamin K wrote: ↑

Fri Jun 22, 2018 2:30 pm

All the better reason to use oil, my good man.

Assuming it is allowed by the race rules, sure. However, unless it is an oil only race, they will invariably get fouled by graphite.

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-r4gSKqyYwigNlqNSlq6ByqgR0...

whodathunkit wrote: ↑

Thu May 03, 2018 7:11 pm

maybe https://www.adafruit.com/product/820

That looks like the best option yet. Not sure if mounting hole positions will line up with the bracket, but that is a minor issue.

Seems there is topic iv seen on DT About the race master iv timer switch! Best I can recall about the switch replacement A highly well micro switch VT 16031C2 Or one from Allied.. D413-V3LD SPDT; NO/NC; straight lever actuator; Gold contacts 100ma; 250vac. It looks like you are referring to this th...

MicroWizard Timers has an RS Remote Start Switch and 50' of cable for $15.00. My switch closely resembles the one shown by Vitamin K. They state if you are ordering this switch for a previously purchased timer give them a call and tell them exactly what you have. You will need to have MicroWizard b...

If the problem is a bad switch, then this part may be a suitable replacement, Omron D2MC01H. Though, it may be obsolete too.

https://www.alliedelec.com/omron-electr ... /70354065/

@Anmarie - When you move the whisker, do you hear a click?

Check the wires connected to the switch and make sure that they are firmly connected.

Check also wires going into the back end of the plug on the end of that cable. See if you have a loose or broken wire there.

This looks to be the correct part, Cherry E53-00R, but it looks to be obsolete. Not sure what a suitable replacement would be.

http://www.res-rich.com/cherrycorp/e51.htm

I used this setup for 4 races this year and it worked perfectly.

MJThurston wrote: ↑

Sun Apr 29, 2018 6:02 pm

How do you post pictures on here?

See http://derbytalk.com/viewtopic.php?f=14&t=10

Here's some interesting practice track plans.

asatxj wrote: ↑

Sat Apr 21, 2018 12:23 pm

Can it be colored or just tinted?

I've seen it both ways.