NSR/Scaleauto GT3

2020

Rules as per the National GT3 Championship

The latest announcements and details from the National GT3 Championship are published on SlotForum.

Rationale: To race “out of the box” cars with specified modifications using mainly NSR, Scaleauto and specified third party components.

Eligible cars:
- NSR
  - ASV (Aston Martin Vantage GT3)
  - Audi R8 LMS
  - BMW Z4 GT3
  - Corvette C6.R
  - Corvette C7.R
  - Mercedes-AMG GT3
  - Porsche 911 (997) GT3 RSR
- Scaleauto
  - Audi R8 LMS GT3
  - BMW Z4 GT3
  - Corvette C7.R (A7-R)
  - Mercedes-AMG GT3
  - Mercedes-Benz SLS AMG GT3
  - Porsche 911 (991) RSR
  - SRT Viper GTS-R

Rules: NSR

Parts marked * are standard in most cases.

Body
- Must retain original interior.
- Rear wing must be firmly affixed at the start of every race.
- White kits must be fully painted.
- Clear coats may be used in addition to paint, but not as a replacement for paint.
Chassis
- Must be the NSR black plastic chassis that matches the body.
- Magnet(s) must be removed.
- Ballast may be added, but must be firmly fixed.
- Taping, strengthening and/or laminating is not allowed.
- If a drop arm was fitted originally it must be retained. It may be adjusted or fixed using the screw supplied.
Guide
- Must be NSR part number 4841*, 4842*, 4843, 4844, 4845 or 4859.
- Spacers may be used to set guide depth.
Motor pod
- Must be as fitted to original purchase.
- A small amount of material may be removed from the motor cradle to help avoid stress fractures when installing a motor.
Motor – Must be one of the following:
- NSR 3023* – King 21 with purple wrapper, 21400 rpm, 350 g-cm.
- NSR 3017 – King 21 with orange wrapper, 21400 rpm, 322 g-cm.
- Scaleauto SC-0026b – Endurance, 22000rpm, 310 g-cm.
Gears
- Pinion – must be:
  - NSR 7112, 7113*, or 7114 (7.5mm 12–14T brass).
- Anglewinder spur – must be
  - NSR 6528, 6529, 6530, 6531*, 6532, 6533 or 6534 (16.8mm 28–34T aluminium).
Axles – Must be:
- NSR 4801 (49mm solid steel) or 4802 (52mm solid steel).
Bearings
- Must be standard fit as supplied with model.
Wheels
- Front – must be
  - NSR 5001 (Ø16 x 8mm solid hub) or
  - NSR 5003* (Ø17 x 8mm solid hub)
  - and must turn when car is placed on a set-up block and pushed down and forward.
- Rear – must be either of:
  - NSR 5003 (Ø17 x 8mm solid hub).
  - NSR 5004* (Ø17 x 10mm air hub)
Tyres
- Front
  - Must be black rubber. May be varnished and/or glazed.
- Rear
  - Must be NSR black rubber.
  - The NSR logo should be visible on both tyres. If logo has become worn or indistinct the scrutineer will adjudicate.
Wheel inserts
- May be fitted.
General
- Overall width across rear wheels and tyres must not exceed 64mm.
- Wheels must not be visible from above when either axle is moved to its extreme left or right positions.
- All other components are free choice – e.g. braids, wires, screws, spacers, stoppers, glues and lubricants.

If it is not listed above it is not allowed.

Rules: Scaleauto

Body
- Must retain original interior.
- Rear wing must be firmly affixed at the start of every race.
- White kits must be fully painted.
- Clear coats may be used in addition to paint, but not as a replacement for paint.
Chassis
- Must be the Scaleauto plastic chassis that matches the body.
- ‘Home’ range chassis are not allowed.
- Magnet(s) must be removed.
- Ballast may be added, but must be firmly fixed.
- Taping, strengthening and/or laminating is not allowed.
Guide
- Must be Scaleauto part number 1603, 1604, 1605, 1606, 1607, 1608, 1620 or 1621.
- Spacers may be used to set guide depth.
Motor pod
- Must be Scaleauto anglewinder configuration (or inline option for Mercedes only) as fitted to RTR series models.
- Any offset allowed.
- Lateral arms must not be fitted.
- A small amount of material may be removed from the motor cradle to help avoid stress fractures when installing a motor.
Motor – Must be one of the following:
- Scaleauto SC-0011b – long can Tech-1, 20000 rpm, 286 g-cm.
- Scaleauto SC-0025 – Sprinter, 21500 rpm, 300 g-cm.
- Scaleauto SC-0025b – Sprinter 2, 21500 rpm, 320 g-cm.
- Scaleauto SC-0026b – Endurance, 22000rpm, 310 g-cm.
Gears – anglewinder configurations
- Pinion
  - must be Scaleauto or Slot.it 11, 12, 13 or 14T.
- Spur
  - must be Scaleauto or Slot.it with free choice of tooth number.
Gears – inline configuration for Mercedes only
- Pinion
  - must be Scaleauto or Slot.it 8, 9 or 10T,
- Crown
  - must be Scaleauto with free choice of tooth number.
Axles
- Must be standard Scaleauto as supplied with model.
Bearings
- Must be standard fit as supplied with model.
Wheels
- Front – must be
  - Standard Scaleauto plastic/aluminium as supplied with model, or
  - Slot.it W16508215A (ex PA43-Als) 16.5 x 8mm aluminium, and
  - Must turn when car is placed on a set-up block and pushed down and forward.
- Rear – must be one of the following:
  - Scaleauto 17.3mm plastic/aluminium as supplied with model.
  - MB Slot 19019
  - Racer SWW/GTA
  - Slot.it W17309715A (ex PA62-Als) (Ø17.3 x 9.75mm solid hub)
  - NSR 5003 (Ø17 x 8mm solid hub)
  - NSR 5004 (Ø17 x 10mm air hub)
    - NB: NSR wheels will require reaming to 2.38mm.
Tyres
- Front
  - Must be black rubber. May be varnished and/or glazed.
- Rear
  - Must be NSR black rubber.
  - The NSR logo should be visible on both tyres. If logo has become worn or indistinct the scrutineer will adjudicate.
Wheel inserts
- May be fitted.
General
- Overall width across rear wheels and tyres must not exceed 64mm.
- Wheels must not be visible from above when either axle is moved to its extreme left or right positions.
- All other components are free choice – e.g. braids, wires, screws, spacers, stoppers, glues and lubricants.

If it is not listed above it is not allowed.