A Specific Note On Motors

As a few of you have asked I thought I would clarify the status on SCX motors. Please note all numbers are approximate. All of this is in the name of close competitive racing so that we all end-up using as similar mechanical equipment as possible and can focus on having fun.

SCX F1/2WD

The RX-2/RX-4/RX-41/RX-42 motor is legal in both SCX F1 and SCX 2WD. Pro-turbo and "B" spec motors are not allowed. Typically this revs to about 15,000 RPM’s at 14 Volts. You can identify this as it has the names printed on the top of the engine or it is completely blank on older models. All at 12V on the rolling road: Old Rx-2/RX-4 V1 = 4740 rpm, RX-41 V1 = 4800rpm, RX-41 V2 = 5300rpm, Pro Turbo Plus = 5500rpm.

The 5021 Pro Turbo Plus are NOT legal in either of these two classes. That engine revs to about 19,000 RPM’s at 14 volts. Again easy to recognize as the name is printed on the top of the engine and it is NOT fitted as standard to any car that SCX has ever released. To see more about the difference between the V1 and the V2 versions see the followign thread on Slot Forum http://www.slotforum.com/forums/index.php?showtopic=6992

The RX-62C (comes standard on the Dome Judd Le Mans and later Audi R8's) is NOT legal in either of these two classes. That engine revs to about 20,000 RPM’s at 14 volts. Again easy to recognize as the name is printed on the top of the engine and it is NOT fitted as standard to any other car that SCX has ever released as of January 2006.

SCX F1 motors (which come fitted as standard to Modern SCX F1 cars since 1998) are not legal in SCX F1/2WD either. The engine revs to about 21,000 RPM’s at 14 volts. Again easy to recognize as the name is printed on the top of the engine and it is only fitted as standard to Modern F1 cars that SCX has released in the last 3 – 5 years.

SCX 4WD

In contrast to F1/2WD the RX-5/RX-8/RX-81 V2 motor is legal in SCX 4WD as most modern 4WD cars have the V2 engine as standard. The V1 typically this revs to about 14,000 RPM’s at 14 Volts. The V2 typically this revs to about 15,500 RPM’s at 14 Volts. You can identify these as it has the three names printed on the top of the engine or it is completely blank on older models. To see more about the difference between the V1 and the V2 versions see the following thread on Slot Forum http://www.slotforum.com/forums/index.php?showtopic=6992&hl=
The 5019 Pro Turbo 4x4 is NOT legal in this class. That engine revs to about 18,000 RPM’s at 14 volts. Again easy to recognize as the name is printed on the top of the engine and it is NOT fitted as standard to any 4WD car SCX has ever released. Occasionally it also as RX-81D printed on it.
The RX-91 4WD motor as fitted to the SCX Lancia Delta Integrale is not legal either. It won't fit other SCX 4WD's as its armature is 2-3mm shorter but it is also a much faster rev'ing motor.
Comparative revs, all at 12V on the rolling road: RX-91 5430 rpm; Pro Turbo (4x4) 5500 rpm; RX-81 V1 4500 rpm, RX-81 V2 5300 rpm. Please note the Lancia car itself is legal, just take a RX-81 engine, push down the pinion gear and shorten the end of the armature with a Dremel to fit the Lancia chassis.

Ninco Motors

There is only one NC-1 motor available which is rated at 15,700 rpm at 14.8 volts. All the other Ninco motors are different shapes and are not legal in any classes we race. It is very easy to retrofit a NC-1 motor into any Ninco car, no matter what motor it came with. There are specific converter shims sold at local and internet retailers.

Slot.it Motors

The Slot.it Le Mans group C/IMSA class uses the Slot.it motor fitted as standard to slot.it cars: SIMS04 IL. This is the V12/2 25,000rpm motor. Initial tests seem to indicate this motor just likes to be run-in by driving it. The procedures described above seem to just destroy it, oh well you live and you learn!