GENERAL RULES - ROAR

8.8.3.2 All armatures will be wound with the “Mabuchi” cross wrap from only round 19 AWG wirewith a maximum size of 0.0355 inches (0.902 mm) bare, and a minimum of 19 continuousturns per pole. No error factor in the number of winds per pole/ stack will be allowed. Wirelength will be a minimum of 134 inches total, or 44.60 inches unwound per pole. Noshorting of any wind or winds allowed.8.8.3.3 Armatures may be hand or machine wound, and must bear a mark or tab identifying thearmature and winder. Example: NAME 19X1, NAME 19T. Marks may include etching orengraving of the armature stacks and/ or tags epoxied between the stack spacing andmust be permanent, as to see any tampering. If it is found that these markings/ tabs/ tagsare not legible, or tampered with, the armatures may be deemed illegal. Unmarkedarmatures will be deemed illegal and may result in forfeiture of main or qualifier.8.8.3.4 The commutator slots must be aligned to neutral with the center of the individual poles/segments. No tolerance allowed on commutator timing. Skewed commutator segmentsare not legal.8.8.3.5 Full stack armatures made only of magnetizable material. No modifications to the stackswill be allowed other than the normal drill balance holes. Any modifications to the originalOEM Importer/ Manufacturer configurations, including but not limited to, excessive drillholes/ milling/ turning to lighten and/ or enhance the performance of that of a full stackarmature will not be allowed. No linear separations of the stack segments will be allowed.8.8.3.6 Vertical slots will not be allowed on any armature manufactured by the OEM after January1, 2002. Vertical slots on all armatures manufactured prior to January 1, 2002 will not bemodified from the original configuration. At no time will any material be removed from thearmature, whether hidden or visible, except those from the normal balance holes asspecified here within. No skewed armature laminations allowed.8.8.3.7 Balancing may be done by either epoxy and/ or drill balancing. Drill marks shall notexceed two holes per pole with a number 1 or number 2 combination drills/countersink.Holes may not be larger than 0.1875 inches (4.76 mm) in diameter and may not exceed0.250 inches (6.35 mm) in depth. Any large drill holes of the same size, on all threestacks, shall be suspect to excessive drilling for the purpose of lightening and/ orenhancing the performance and is not allowed.8.8.4 CAN and ENDBELL:8.8.4.1 The space between magnets will be centered at one set of the mounting holes, which willbe marked to indicate zero degrees (0) centerline.8.8.4.2 Magnets must be permanently affixed/ epoxied to the can and not removable. Ceramicmagnets only. Honing of the magnets or reforming the can will not be allowed. Onlysingle-piece (two magnets in a can), or split (four magnets in a can) are allowed. Singlepiece magnets will not be cut to emulate split magnets. Single piece or split magnets mustbe of equal size and glued into the can in such a way that they do not advance themagnetic timing of the motor.8.8.4.3 Motor will have adjustable timing. Timing rings shall not be drilled to allow any increasedtiming other than those drill holes from the manufacturer. Timing for motors shall notexceed 36 degrees.8.8.4.4 Brush hoods will be stand up (3.75 mm x 5 mm) only. Brush hoods may be changed fromapproved ROAR can/ endbell combinations to allow for stand up brush hoods.8.8.4.5 “L” cut/ timed brushes will not be allowed. Only 3.75 mm x 5 mm brushes and hoods willbe used. Trimming/ modifying or reducing the size of larger brushes to stand up brushsize is not allowed. Slotting and/ or elongating the brush hoods mounting holes to cock/shift the location or change the alignment of the brush is prohibited. Endbell must besecured to the can with screws. No gluing of the endbell to the can is allowed.8.8.4.6 Ball bearings are allowed.8.8.4.7 End bell must have the original manufacturer's logo, name or mark molded in.8.8.4.8 Swapping of components from one Manufacturer into a motor from another Manufactureris prohibited. All 19T Oval motor combinations (armature/ can/ endbell) shall bemanufacturer specific (i.e. Epic/ Epic/ Epic, Yokomo/ Yokomo/ Yokomo, etc.).43