Category: Racing Platforms

Introducing the “Super Stock” Class

While I’m not sure of the interest level in this class, several drivers have expressed interest in a slightly more advanced set of rules to enable more tuning and flexibility in building cars.

Our Super Stock class is based on the 2022 HOPRA SUPER STOCK rules but has two key differences:

    1. HOPRA restricts motor and traction magnets to stock Ceramic-only material and does not allow Compression-molded Polymer (Level 4) magnets in this class. We allow standard V-SPEC Level-4 magnets.
    2. HOPRA does not, however, have any restrictions on armature bushings, gearing, axles, or wheels and tires. This means HOPRA rules allow dual-compound tires, we don’t. Only silicon slip-on tires are permitted.

Kevin Webster has a bunch of HOPRA-legal Super Stock cars, which he and I tested extensively. The general consensus was that the HOPRA car was not significantly different than our current Viper V-SPEC (SPEC-RACER) class and forcing interested drivers to purchase expensive ceramic-grade magnets for these platforms would be a burden to many of our drivers.

Due to the cost of dual-compound tires and the lack of interest in purchasing them, we decided against allowing dual-compound tires—for now. In our testing, dual-compound tires produced about a half-second faster lap times.

So, why setup and race a Super Stock car? Well, one reason is that there are a few more tuning options available in this class:

      • Open gearing choices, unrestricted.
      • Adjustable brush tension (on brush-barrel type chassis’)
      • Any material for armature bushings, except ball-bearings.
      • Many competitive chassis options: BSRT G3/G3R/G3RS/G3RSB, Mattel/Tyco 440-X2, Micro Speedworks T+, Slottech T1/T2/T3
        and T1X, Wizzard-Patriot P2/P3/Scorpion/Storm/Storm CH22/Fusion, Viper V1 (V-SPEC).

Bottom line, this class provides a bit more speed and tuning flexibility to those drivers interested in moving up a notch or two in tuning ability and options.

We’ll see where this class goes. Right now, only a couple of active drivers have these cars ready to race. That said, you can actually just run a good stock Viper V-SPEC and do fine on most tracks. The gearing options are pretty simple, all you need are a couple of spare rear axle assemblies with lower or higher gearing and swap them out to see what works best on the particular course you’re running on.

The other tuning options are a bit more nuanced but also very useful.

Feel free to comment on this new class here or on my Slot Car MeWe page here.

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!

New F1/Indy Class?

HCSlots “Sportsman” chassis (short wheelbase position)

Well, not really new, just a little different twist on a theme we’re already supporting.  The short story is that we’re proposing putting an F1/Indy hardbody on a Viper-Jet platform.

Please check out the details in the Stewart Raceway Forums here. And, please comment there also. Obviously, we need to discuss and sort out the related rules, though it’s pretty much “U-Build Viper-Jet” rules with just a body, wheelbase, and front-end change. The pics here are just two different V-Spec models but you’ll get the idea.

V-Spec with MegaG+ front hubs and tires (short-wheelbase position)

Yea, I agree, we don’t really need to introduce a new class right now. However, this one is a slam-dunk and should be a great addition to our racing program going forward.

In fact, if enough interest, we’ll debut this class of car at the next Formula “e” Oval race. One more oval layout event in this series, just need to decide when.

Okay, let the discussion begin!