NASCAR MADNess Series, Round 1 Tomorrow!

Hi All,

It’s a good thing we’re running on the oval since we’ll be short a few of the usual suspects. This is going to be a wide-open series with several drivers already warning of missing more than one event.

When: Saturday, May 28, 2022

Event Schedule:

10:00 – Gates open, track power on, practice starts
11:15 – Drivers Meeting/Announcements
11:30 – Racing Begins (30-lap heats, fuel):

Race 1: JL or AFX M/T Gravity Car (IROC) 18v
Race 2: OS3 TFX “Lites” NASCAR bodies (if available)  18v (♣)
Race 3: Viper-Jet “NASCAR Lexan” 12v

Lunch Break

Qualifying: one warmup lap, then three laps under green. Average time of the three laps. The fast qualifier starts on the pole for the feature race.

Race 4: Jag Hobbies PR-5 NASCAR “Lites” 16.5v **Feature Race** (♣)
Race 5: Jag Hobbies NC-2 NASCAR “Lites” 15v
Race 6: Tyco 440-X2 Wide-Pan NASCAR Hardbody 15v (Tomahawk rules)

♣ Denotes Concourse d’ Elegance Points

Could be that some class races are replaced with IROC races. Feel free to bring any IROC sets you’d like to run.

Track open tonight for those of you who need some time on SR3.

Okay, shut up and drive!

TFX “Modified” Testing Yielding Interesting Results

OS3 TFX with a Wizzard E-Jet front-end, Black Dragon magnets, Titanium axles, and a Tornado 16.5-ohm arm.

Yea, I know, we haven’t raced this class…yet.

We’ve raced the TFX “Lite” platform, which is virtually a stock OS3 TFX platform with Black Dragon magnets instead of the factory-installed Grey Dragon magnets. The extra downforce makes the car much easier to drive and increases lap times considerably.

The TFX “Modified” is the next logical step for those who enjoy T-Jet-style racing but want to go a bit faster.  Our rules allow quite a few mods but do not allow any stronger magnets than the OS3 Black Dragons.  We also do not allow Dual-Compound tires.

Best lap on SR2. Top-level Fray cars have clicked-off 5.7-sec laps on the same layout but with Dual-Compound tires and Dash Killer Bee magnets.

In spite of those restrictions, my initial testing with a “Modified” TFX, produced lap times fairly close to a top-level Fray T-Jet on SR2. This is very encouraging since the cost of a competitive “Modified” TFX platform is roughly $100 compared to a comparable Fray T-Jet at ~$250 or much, much more. Yes, my testing was without a Lexan body.

I suspect one could get the TFX “Modified” platform into the 5.7-sec/lap range (w/Body) with only a bit more development and tuning. I haven’t tried a Dynamic balanced/trued arm yet but I suspect there will be diminishing returns there due to the limitations of the Black Dragon motor magnets.

My current “Modified” parts list:

    • Black Dragon Motor Magnets
    • Wizzard “E-Jet” Brass Front-end
    • OS3 Tornado 16.5-ohm Armature
    • Wizzard Titanium axles
    • SlotTech Comm Brushes
    • Viper Teflon Armature Spacer
    • RT-170 Crown Gear

“Modified” rules allow a Lexan body using OS3 “stick-on” body mounts, which helps keep costs down but detailing possibilities limitless.

Okay, we’re not racing this class in Round 1 but I’d really like to get this platform added to the mix at Stewart Raceway at some point. It’ll take some testing and tuning so let me know if you’d like some extra track time to get a car developed and ready to race.

This class is for the more hardcore Slothead and fits into the HOPRA “Super Stock” level of racing.

Okay, shut up and drive!

SR3 Update: Bingo!

Phidget 8/8/8 card replacing the “road slug” 0/16/16 card. The 16 card requires a minimum of 16ms under the sensor to trigger. The 888 card only 4ms.

Just a quick update on the Pit-Entry limitations I warned about in my previous update.

I’ve been emailing a support guy at Phidgets in Canada, who has been very helpful. He came up with a couple of IR sensor config options for me to try on their faster 8/8/8 card. I couldn’t get this card to work in previous attempts so went back to their 0/16/16 card and decided to live with that card’s shortcomings.

The first and easiest option he proposed worked amazingly well.  A few of us will do some comprehensive testing on Saturday. But in my testing today, it seemed to detect every pit entry I could throw at it. And, to my surprise, it detected six cars entering the pits simultaneously. That indicates that the 8/8/8 card might just work for now on SR3–the 0/16/16 card had trouble detecting three simultaneous pit entries.

Anyway, time will tell, but it does appear that the pit-entry speed limitations on SR3 are removed, which is a good thing. No idea if it’ll support any conceivable “Hail Mary” drop into the pits, but I couldn’t perform an entry that it did not detect.

So, never mind my earlier update post. SR3 pit-entry speed limitations appear to be resolved.

Okay, shut up and drive!

SR3 Grand Opening Track Day

Race Fans,

Stewart Raceway is back in business. I’d like to get at least six drivers over for a track day either Saturday, May 14, 2022 or Saturday, May 21, 2022.

We need to run the new track through the paces and make sure everything works as expected, barriers are solid and in the proper places, and no gremlins exist. The first track day will be on the road course. You’ll want to make this track day or the very next to get used to the different pit-entry style on SR3.  I also want to run a 25-30 lap race on SR2 to make sure the intermittent pit entry miss is resolved there.

Please register here.

Hopefully, we can get enough guys over on the 7th to flush out the road course. If so, we’ll do the same thing the following Saturday to flush out the oval course.  The first “official” race of our next series is slated for Saturday, May 28, 2022. Details to follow soon…

Race Coordinator RMS Developments

While I was consumed with trying to deal with Phidget problems on SR3, I was also working with Dave Aufderheide, the developer of Race Coordinator (RC), to support power-cycling when out of fuel.

RC always supported fuel racing but it just quit counting laps when you ran out of fuel. It has audio to inform you you’re low or out of fuel but it did not “stutter” power to make it painfully obvious you were out of fuel.

In the midst of working with SlotTrak to resolve the SR3 pit-entry detection issues, I also reapproached Dave at RC to support the power “stuttering” feature exclusive to SlotTrak fame. If RC could support that feature, it would certainly make RC a comparable alternative to SlotTrak, which appeared to have serious issues with fuel racing on SR3 at the time.

Dave is a remarkable and clever guy and one who seems to enjoy solving complex technical problems…if he has the time among being a husband, father, and very busy professional software developer.  I first approached Dave on this feature several years ago but he felt that I was the only one out there requesting it and didn’t give it too much thought back then.

A few years–and a little spare time–later, he came up with a possible way to do it. RC has a mechanism called “Extended Protocol” that allows technical track owners to add custom features to RC largely independent of the actual RMS system. These features actually run on a Arduino microcontroller in a software environment called a “Sketch.” This is a C++-based programming environment that allows you to write code that interacts with RC to accomplish some purpose like controlling LED’s, lights, lane switching, audio, whatever you can think of that RC may not do but the independent Sketch can.

In this case, Dave determined that the Arduino Sketch could actually “stutter” or cycle individual lane relay power independently without having to change the code in RC. This, of course, is very desirable to a developer since he doesn’t have to change the main program and then support the new features into perpetuity.

So, after just a couple of weeks of finding time to test and write code, and retest, Dave came up with a Sketch that does the job quite nicely. All you have to do is “tweak” the Sketch code to communicate with your track hardware, configure the “stuttering” pattern, upload it to the Arduino, and bingo! When a car runs out of fuel, the relay simulates an out-of-fuel situation just like SlotTrak.

“So what,” you say? Well, there are only two systems out there that support this feature: SlotTrak and now Race Coordinator. I’m very pleased and glad I have an alternative to SlotTrak in this regard.

We haven’t used RC much over the last couple of years for serious racing. Mainly because SlotTrak’s fuel features had the “stuttering” capability and most drivers prefer that over the–not always reliable–audio alert when running out of fuel. Now we have two options. Both systems have their strong points, different features, functions, etc. RC is a very customizable RMS, whereas SlotTrak is pretty much a closed system with relatively little customization possible by the user.

I love them both.  But I sure wish they both supported the same hardware, which is frustrating, but they are exceptional RMS solutions that have unique features which make it difficult to always run one over the other.

Okay, shut up and drive!