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Slot.it Group C
Models Allowed
Slot.IT Group-C or IMSA models
- Porsche 956 & 962 (C/IMSA)
- Lancia LC2 & LC2/85
- Mazda 787B
- Sauber C9 Mercedes
- Toyota 88C
- Nissan R89C
- Jaguar XJR6, XJR9 & XJR12 *
Body
- Mandatory: OEM hard cockpits and Glass; Prohibited: Lexan cockpits, or glass
- Mandatory: Body must start every race with all major parts intact (e.g. windows and wings).
- Permitted: Antennas, mirrors, wipers, tow hooks, and other small parts damaged from accidents do not have to be replaced.
- Mandatory: Wings must be attached at Green flag for Heat. Wing repairs must occur during green flag. Wings not replaced before end of a Heat incur 10 lap penalty.
- Wings lost or damaged in last lap do Not incur a penalty.
- Permitted: White kits and Fantasy Liveries. White Kits must be painted (or decaled uniquely) with at least one coat. At least two numbers must be visible.
- Open Choice: Body and pod screws. Optionally taped to prevent loss. Lost screws that cause issues with a competitor’s car, incur a Five lap penalty.
- Permitted: Light kits. Removal of body material for light installation must be minimum. e.g. a hole for an LED is acceptable, but a complete removal of a head light bucket is Not. What is considered “Too much” – will be determined by the Scrutineer.
Chassis
- Mandatory: Chassis must be of type intended for body. Permitted: Motor pod cut-outs can be removed.
- Permitted: OEM Slot.It chassis (EVO, EVO6, etc.) Prohibited: Metal or Slot.IT HRS upgrade chassis
- Permitted: Flashing on chassis/body may be trimmed to allow better “Float”. “Too much” – will be determined by the Scrutineer.
- Permitted: OEM Front axle lower adjustment Caps. Prohibited: Modification to the upper axle loops (i.e. you cant modify the older New-old-stock chassis that has no adjustable axle carriers).
- Mandatory: Slot.IT brand guides; SICH-07 deep wood/routed screw guide highly recommended.
- Open Choice: Pick-up braids; Motor/lead wires.
- Prohibited: Traction magnets; ballast below the pan./chassis; chassis/pod contacting the track.
- Permitted: Ballast (lead, tungsten, etc.) above the chassis pan. Lost screws that cause issues with a competitor’s car, incur a Five lap penalty.
- Permitted: Slot.IT independent front axle kit; Slot.IT magnetic suspension kits.
Motor & Mounting Pod/carrier
- Mandatory: Slot.IT brand 21.5K or 23k RPM motors – Inline orientation/pod.
- Slot.IT SIMX16 V12/4, short-can, 23K rpm motor Inline 170 g*cm; Older, SIMX06 V12/3, short-can, 21.5K rpm motor Inline 170 g*cm
- Permitted: Motor mounting screws; tape; glue. Tape used to prevent Pod Screws from falling out.
- Prohibited: Modifications to armature, bushings, magnets; POD protruding below chassis.
- Permitted: Flashing may be trimmed from Pod to allow better “Float”. “Too much” – will be determined by the Scrutineer.
- Mandatory: Slot.IT CH14 (stock) spherical bushings
Gears
- Mandatory: Slot.IT brand gears and pinions.
- Open Choice: Gear Ratio
- Prohibited: Modifications to Crowns or Pinions
Wheels
- Permitted: Slot.IT Series PA17, PA43, WH1183, WH1185 Rear Wheels
- 15.8d x 10w, 16.5d x10w; 17.3d x 10w
- Mandatory: Slot.IT wheel inserts; Open Choice in insert styles
- Prohibited: Modifications (drilling). Width: Wheel/tire must not be visible beyond wheel-well/fender when viewed from above.
Tires
- Mandatory: Slot.IT brand tires.
- Recommended:
- PT28; 20d X 10w; F30 (30-shore) Rubber Compound *limited new stock availability
- PT27; 20d X 10w; F22 (22-shore) Rubber Compound *limited new stock availability
- PT1207F22; 18~19.5d X 10w; F22 (22-shore) Rubber Compound
- PT1207N22; 18~19.5d X 10w; N22 (22-shore) Urethane-ish Compound
- Recommended: Zero-Grip Slot.IT Front Tires (SIPT07 19x11mm; SIPT15 17x10mm)
- Permitted: Gluing; Truing; Chamfering (rounding).
- Prohibited: Glazing the front tires with nail polish or CA. Traction compounds; Oil Soaking; Goop/Bite.
Axles
- Mandatory: Slot.IT brand axles.
- Open Choice: Axle collars/Stoppers. Spacers/washers.
- Prohibited: Modifications.
Power 12 v
Build it strong.
Keep it simple.
Make it work.
(Leroy Grumman)NSR GT3 Series
Models
- Current or legacy NSR GT-3 cars https://www.nsrslot.it/assets/models/modelli.html
Aston Martin Vantage (ASV) Audi R8 LMS BMW Z4
Corvette C6R Corvette C7R NSR Cars legal in 2016 Modern GT series
Mercedes AMG Porsche 997
Body
- Required: OEM hard glass & cockpit (no Lexan). At the start of each weekly-round & all Heats; major body parts (esp. windows, lights, wings) must be intact. Wings must be re-attached for each heat. Permitted: Wings can be reinforced with ShoeGoo, styrene or rubber (e.g. Thunderslot donut holes cut to parallelogram shape).
- Permitted: Small Vulnerable Parts: antennas, mirrors, wipers, tow-hooks do Not have to be replaced after race damage. Driver’s legs/feet can be trimmed to prevent contact with motor shaft, axle, ballast or underside of body.
- Permitted: Smoothing the various bumps on the light-buckets *if* front tires are contacting them. Thin washers on the front body post to solve tire contact, etc.
- Options: White Kits must be painted or decaled; Required: three race numbers (both doors plus either -Hood, -Trunk, -Roof, or -Windshield)
**Duplicate Pre-Decorated Liveries must be made unique – either with Different Race Numbers, painted wings or body panels, or decals. - Prohibited: Tires visible past 0.5mm from skirt/fender/wheel-well (when inspected from above)
Chassis
- Options: *Recommended* Extra-Hard-Green or Hard-White chassis/pan; OEM Black-Medium hard
Example: ASV WH1459, GR1488; C7 WH1492, GR1494; R8 WH1475, GR1486; Z4 WH1463, GR1489 etc. - Required: Drop Arm – Red/Hard (NSR-1234) Permitted: Arm may be screw-fixed, floppy, or spring-loaded.
- Permitted: Flash may be sanded; and molding nipples removed. Ballast for tuning weight-distribution on chassis or motor pod.
- Open Choice: OEM or Brass 4-40 axle adjustment screws.
- Options: *Recommended* NSR Guides -Wood (deep/long) screw mount (NSR-4859); OEM snap-in (NSR-4841) *good to add shims under pan to remove slop and extend the depth of the keel/blade.
- Open-Choice: Motor Lead Wires, Grommets, Pick-up braid (i.e not required to be NSR brand)
- Open-Choice: Body (and motor pod) Screws (i.e. may be smooth shank brass screws from Slot.IT or NSR)
- Prohibited: Magnets; ballast below the pan; gaps with body and chassis (or pod) exceeding 1mm (credit card thickness)
Motor
- Options: (OEM) Shark-25-EVO (NSR-3043; 25K 180GM); Shark-21.5 (NSR-3041; 21.9K 164gm); vintage Shark-22 (NSR-3001; 22.4K 168gm)
- Permitted: If the ‘rapper comes off (dawg!), if the “can tattoo” for Model/RPM is Viewable the motor can pass. Tattoos resist lubes and VooDoo juice.
- Permitted: Trimming Endbell Side Shaft for tire clearance. Shaving the can, on the drive side, near the Spur gear bushing for clearance.
- Prohibited: ANGLEWINDERS AND INLINES ESP. LONG-CANS Changes to the armature, brushes, bushings, magnets.
Motor Pod
- Options: *Recommended* Sidewinder OEM Red/Hard (NSR-1264); Black/Medium (NSR-1262) Triangular
- Permitted: Gluing motor to the pod. No screw holes are in the OEM pod.
- Prohibited: Pod protruding below the chassis more than 0.5mm; IW AND SW
Gears
- *Recommended* OEM Pinion: 6.45mm-DIA 11z NSR-6911A (NSR does not have any other 6.45 pinions)
- *Recommended* Sidewinder Spurs OEM 17.5mm-DIA 32z NSR-6032; 6030, 6031 – 6037
- Open-Choice: Any NSR pinion and spur sizes (some older NSR GT cars may not use the 6.45Pin-17.5Spur combo)
- Open-Choice: Gear-Ratios (OEM: 32/11 = 2.91 therefore rear wheel RPM 7,875 = (25,000 * 11v/12v) / 2.91)
Examples: HOT 31/11 = 2.82 ~ rear wheel RPM 8,127 SMOKING 30/11 = 2.73 ~ 8,395
Wheels
- Required: OEM factory wheels FRONT: (NSR-5003) 17dx8w REAR: (NSR-5004) 17.25dx10w
- Options: Porsche REAR (NSR-5003 17dx8w)
- Permitted: Filling the Air-System-Gap with Thunderslot Foam Donuts THRMRFM001
- Required: NSR brand wheel inserts; Open-Choice: Type and Style
Axles
- Required: NSR brand solid axles; Bushings
- Open-Choice: Stop collars, Spacers/washers
- Prohibited: Independent rotating front axles.
Tires
- Options: FRONT: No-Friction/Zero-Grips (NSR-5226) 18dx8w -or- (NSR-5201) 17dx8w
- Options: REAR: (NSR-5230) 20dx11w Supergrip -or- (NSR-5231) 20dx11w Ultragrip
- Options: Porsche REAR (NSR-5206; 19dx10w Supergrip; Porsche)
- Permitted: Tires may be glued. ShoeGoo is recommended rather than CA (superglue) which may split both Supergrips and Ultragrips.
*Recommended* Truing camphered tyres (shoulders rounded). - Prohibited: Traction Compounds (bite, goop, glue)
GENERAL
- Power: TBD
Build it strong.
Keep it simple.
Make it work.
(Leroy Grumman)RevoSlot GT Series
.
Models Allowed
- Any of the following RevoSlot models are allowed.
- Porsche GT2
- Marcos LM600
- Dodge Viper
- Toyota Supra
- Lister Storm [?]
- Racers must select a livery prior to the series.
- No more than two of the same liveries are allowed.
Body
- No modifications to the body are allowed.
- The stock lexan cockpit and the windows may be Shoe Goo’ed in place to keep them secure.
- Shoe Goo may be used to secure body pieces but may not be used in excess as ballast.
- Body must start every race with all major parts intact including windows and wings.
- Antennas, mirrors, wipers, tow hooks, and other small, protruding parts from the body are not required.
- Wings must always be in place at the start of every heat. The wings must be held on securely with glue or tape, so they will not fall off during a heat. The penalty for starting a heat without the wing will be 5 laps. There will be no penalty for losing a wing during a heat.
- If white body kit is used, exterior of body must be painted with at least one coat of paint.
- If white body kit is used, the body must have numbers displayed on both sides and the top of the car.
- The use of the rubber body bumpers is optional. These can be Shoe Goo’ed in place.
- Body screws must be stock; they can be taped over to prevent loss during the race. The tape may not control body or pod movement. If a screw falls off the car, a 5 lap penalty will be imposed if the screw causes an issue with a competitor’s car.
Chassis
- No modifications to chassis are allowed.
- Sanding the chassis in any way is not allowed.
- Modifications to the chassis float is not allowed.
- All chassis screws must be stock and be in place at the start of every race.
- Front and rear axle holders cannot be modified in any way.
- Front and rear bearing must be stock. Ceramic bearings are not allowed.
- Only the stock deep guides are allowed.
- Pick-up braids are free choice.
- Traction magnets are not allowed.
- Ballast of any type is not allowed.
- Lead wires are free choice. These wires can be hot glued or taped to the chassis to limit the contact with the front axle.
Motor
- Only the stock RevoSlot motor is allowed. FK-130, SC-0015B
- Modifications to the motor are not allowed.
Motor Pod
- Only the stock RevoSlot motor pod is allowed.
- Sanding of an older motor pod is allowed in order to make the length of the opening equal the newer castings length of 26.5mm from the 25.5mm they are in their stock form.
- Modifications to the motor pod float is not allowed.
- Modifications to the motor holder are not allowed.
- All motor pod screws must be stock and be in place at the start of every race.
Gears
- Only the RevoSlot 33t spur gear and 12t pinions are allowed.
- Gear ratio is set.
- The gear mesh can be adjusted using the motor holder.
- Modifications to spur gear and pinion are not allowed.
- The stock grub screw on the spur gear must be used.
Wheels
- Front wheels must be the stock RevoSlot.
- Rear wheels must be the stock RevoSlot. If you are running a Viper or Toyota you will need to either purchase the 10mm wide wheels, #RS-109 or use the stock 11mm wheels and run an o-ring spacer on the wheel along with the 10mm tires.
- All wheels must have wheel inserts.
- Wheel inserts from any RevoSlot car can be used on any of the RevoSlot models.
- Modifications to the wheels in any way are not allowed.
- Axle spacers are open choice.
- The front wheel track must not exceed 62mm.
- The rear wheel track must not exceed 63mm.
- The stock wheel grub screws must be used.
Axles
- Only the stock axles are allowed.
- Modifications to the axles in any way are not allowed.
- Axle spacers are open choice.
Tires
- Rear tires must be RevoSlot RS-202. These are the stock tires on the Porsche and the Marcos but are not on the Viper and Supra. If you are using the stock 11mm width wheels on the Viper or Toyota the use of an o-ring on the rear wheel to allow the 10mm tires will be permitted. The o-ring you will need is ½” I.D., 5/8” O.D., width 1/16”, industry number #014.
- Front tires must be stock, part #RS-201, hard tires.
- Tires may be trued and have their edges rounded.
- Tires may not be trued in a conical shape
- Front tires are not allowed to be polished or hardened in any way.
Track Power
- The series will be raced at 12 Volts.
General
- If it is not mentioned it is not legal.
- These rules were written to create a fair event and not for racers to look for loopholes.
- Any deviation to these rules must be run by the series manager before the car can be tech’ed.
Build it strong.
Keep it simple.
Make it work.
(Leroy Grumman)El Piloto
(ScaleAuto Pre-war Classic GP or NSR McLarens, depending on availability)
ScaleAuto Pre-War Classic GP
- H2 Series
- All cars will be mechanically prepared by one person. The preparer’s laps will be limited to the minimum necessary to confirm stability and mechanical viability at the start of the series, and after any maintenance required between races.
- All cars will be painted in a historically accurate livery. (Painting may be done by a person other than the one responsible for preparing the mechanicals.)
- Cars will remain in parc ferme’ between races.
- Cars will be available for practice for up to 2 minutes to each racer on race day.
- Cars will be raced in the same lane for every heat at each race.
- Cars will rotate to a new lane at each race.
- Cars will be raced at 11.5v to 12.5v, to be determined during initial car preparation.
- Cars will may be auctioned to club members, distributed as prizes, kept for following season, or a combination of these dispositions at the end of the season. Subject to membership approval.
NSR McLaren (Based on NSR GT3 Rules, subject to modification by series mgr.)
Body
- Required: OEM hard glass & cockpit (no Lexan). At the start of each weekly-round & all Heats; major body parts (esp. windows, lights, wings) must be intact. Wings must be re-attached for each heat. Permitted: Wings can be reinforced with ShoeGoo, styrene or rubber (e.g. Thunderslot donut holes cut to parallelogram shape).
Chassis
- OEM Black-Medium hard
Required: Drop Arm – Red/Hard (NSR-1234) Permitted: Arm may be screw-fixed, floppy, or spring-loaded. - Permitted: Flash may be sanded; and molding nipples removed. Ballast for tuning weight-distribution on chassis or motor pod.
- NSR Guides -Wood (deep/long)
- Prohibited: Magnets; ballast below the pan; gaps with body and chassis (or pod) exceeding 1mm (credit card thickness)
Motor
- (OEM) Shark-25-EVO (NSR-3043; 25K 180GM)
Motor Pod
- Sidewinder OEM Red/Hard (NSR-1264);
Gears
- OEM Pinion: 6.45mm-DIA
- Sidewinder Spurs OEM 17.5mm-DIA
Wheels
- OEM factory wheels FRONT: (NSR-5003) 17dx8w REAR: (NSR-5004) 17.25dx10w
- NSR brand wheel inserts; Open-Choice: Type and Style
Axles
- Required: NSR brand solid axles; Bushings
Tires
- FRONT: No-Friction/Zero-Grips (NSR-5226) 18dx8w
- REAR: (NSR-5230) 20dx11w Supergrip
- Prohibited: Traction Compounds (bite, goop, glue)
GENERAL
- Power: TBD
Build it strong.
Keep it simple.
Make it work.
(Leroy Grumman)NSR Porsche 997 Challenge
- Box-stock time-trial series featuring the NSR Porsche 997.
- Race format: 60 laps on road track, (lane TBD by lot) or 40 laps on rally track.
Track choice to be determined by coin toss AFTER TECH. - Body
- The body cannot be modified in any way.
- The stock plastic cockpits and glass are mandatory
- Lexan cockpits or glass are prohibited.
- Body must start every heat with radiators, windows, and wings in their correct location. If any of these items fall off during a heat they must be repaired before the next heat starts.
- Antennas, mirrors, wipers, and tow hooks are not required and do not have to be replaced if they come off.
- White kits are allowed but must be painted, or uniquely decaled. At least two numbers must be visible.
- Duplicate liveries are discouraged.
- Body screws open choice. These can be taped to prevent loss. Any car that loses a screw and causes an issue with a competitor’s car May have a 15 second penalty applied.
- Chassis
- No modifications to the chassis are allowed.
- The stock NSR BLACK chassis must be used
- Guide
- NSR guides are mandatory.
- Pick-up braids are open choice.
- Guide spacers are open choice
- NSR RED drop-arm mandatory. May be loose or fixed
- Set Up
- Wheel/tire must not be visible outside wheel-well/fender when viewed from above.
- Guides may be trimmed and profiled.
- Magnetic downforce cannot exceed (some arbitrary figure) grams.
- Motor
- Stock NSR Shark 21.5, or King 21/evo must be used
- Lead wires and lead wire guide terminals are open choice.
- Motor Pod
- NSR RED Sidewinder or Angle-winder motor pod required
- The motor pod is prohibited from protruding below the chassis.
- Flashing may be removed from the motor pod to allow better float. Excessive removal of material determined by the scrutineer.
- Motor can be held in place with screws. Screws are open choice.
- Motors cannot be held in with tape or glue.
- NSR stop/axle collars are allowed.
- Spacers/washers are open choice.
- NSR Bronze bearings mandatory
- Pod screws are open choice.
- Tape may be used to prevent the pod screws from falling out.
- Tape over the motor pod to limit pod movement is not allowed.
- Gears
- NSR stock gearing mandatory
- Wheels
- NSR stock wheels mandatory
- NSR wheel inserts are mandatory No inserts may incur a 15 second penalty
- Axles
- Only NSR axles are allowed.
- Any modifications to axles (other than polishing) are prohibited.
- Axle spacers and axle stops are allowed.
- Tires
- Front tires must be NSR
- Front tires must be 8mm wide.
- Rear tires can be any 10mm width NSR Supergrip or Ultragrip tire.
- Tires may be glued to the wheels, trued, and have their edges rounded.
- Traction compounds are prohibited.
- Varnishing the front tires to make them slick is not allowed.
- Track Power
- Road track: 12v.
- Rally track: variable
Build it strong.
Keep it simple.
Make it work.
(Leroy Grumman)My proposal for a 2026 series is simple:
Pre-War El Piloto running ScaleAuto GP124 Classic cars from the 1937-1939 Season
- H2 Series
- All cars will be mechanically prepared by one person. The preparer’s laps will be limited to the minimum necessary to confirm stability and mechanical viability at the start of the series, and after any maintenance required between races.
- All cars will be painted in a historically accurate livery. (Painting may be done by a person other than the one responsible for preparing the mechanicals.)
- Cars will remain in parc ferme’ between races.
- Cars will be available for practice for up to 2 minutes to each racer on race day.
- Cars will be raced in the same lane for every heat at each race.
- Cars will rotate to a new lane at each race.
- Cars will be raced at 11.5v to 12.5v, to be determined during initial car preparation.
- Cars will may be auctioned to club members, distributed as prizes, kept for following season, or a combination of these dispositions at the end of the season. Subject to membership approval.
Build it strong.
Keep it simple.
Make it work.
(Leroy Grumman)The outcome of our Sept 13 club meeting discussion regarding the nomination of 2026 series was the agreement that ALL proposed series must be accompanied by a near-final draft set of rules.
The proposed rules will be finalized during the October meeting to a point where members are comfortable making a decision on their vote before they will be allowed to appear on the ballot.
This new guideline will result in more discussion than in the past, especially for any new series, therefore I am recommending that each member nominate only one NEW series, and one previously run series with an existing ruleset.
Build it strong.
Keep it simple.
Make it work.
(Leroy Grumman)After a robust discussion and more than a few test measurements of last year’s cars during the club’s meeting on Saturday, September 13 the decision was taken to take the first race-day downforce inspection results and, based on the variability, determine any future adjustments to the rules.
It is worth noting that the chassis rubbing on the track is still prohibited, so racers are encouraged to keep that in mind with their builds.
Also worth noting is that a second decision was taken to reintroduce the ‘B’ class with this race. The ‘B’ class will be run at 10 volts. Roster to follow.
Build it strong.
Keep it simple.
Make it work.
(Leroy Grumman)Agree. Let’s fix the minimum ride height and go from there. This needs to be simple.
Build it strong.
Keep it simple.
Make it work.
(Leroy Grumman)I want to take the membership’s temperature on the idea of having one El Piloto race next year. That would be one quarter (or half-year if we chose that series) of just showing up to race. Cars could be a surprise, we could vote, or draw one out of a hat.
The cars will be minimally prepared by a member to be as equal as possible. (To me that means basic tuning of a box-stock car.) Each member will race each car for one heat on race day. e.g. The cars are bound to a lane and just the driver rotates. Parc ferme’ rules will apply between races with only necessary repairs allowed before being sequestered. We can work all of those details out further if there is interest.
Build it strong.
Keep it simple.
Make it work.
(Leroy Grumman)In hindsight, I should have blamed excessive magnetic downforce! 😂
Build it strong.
Keep it simple.
Make it work.
(Leroy Grumman)The white-body kit to replace the one that had the “unfortunate incident” arrived Saturday. Thought y’all might be interested to see that all the parts come in the box to build the version of your choice.
Build it strong.
Keep it simple.
Make it work.
(Leroy Grumman)Lacquer thinner. The alcohol didn’t even phase the paint. Oddly, neither did the lacquer thinner, but it turned the body to rubber.
Fortunately, I have the Denny Hulme 42 car to campaign this week while I wait for a new M6A body to arrive. Of course, that means I’ll have to drive barefoot.Build it strong.
Keep it simple.
Make it work.
(Leroy Grumman)
