R6-R5 PRO Series Modified Motor Details!

1. Again, another increase in rigidity of motor can: the R3.0 and R3.1 motors were three piece designs, the best I thought I could do at the time. The R4 PRO Series motors are a two piece construction, allowing better control of the rotor during high rpm and heavy acceleration. The R5 PRO Series can is still two piece like the R4, but with a better retention system. With the upset forged can design, the forward (shaft side) of the motor is one piece, no fasteners needed to hold a cap or endbell in place. The timing end is integrated into the motor structure with four flush screws instead of three long screws going through the stator.
2. Totally new stator design is the best I have; I call it my 'Dense Core' design! There are no internal slots in the stator, and the outside diameter of the stator has no 'troughs' to affect the magnetic field (elimination of the long through screws holding the can together allows this improvement). With the new stator comes new rotors; their average gauss has increased by 2% on average compared to the R4 motor.
3. Updated timing circuit board to allow the three Hall Effect transistors to be attached around the circumference of the board, rather than radially. Better timing accuracy is the result.
4. I now have five sizes of rotors available for the modified winds (12.0mm, 12.3mm, 12.5mm, 13.0mm, and 13.5mm). Each have a purpose:

• 12.5mm - The most drivable rotor with good torque for most tracks and conditions. The 'standard' ROAR rotor size. Recommended starting point for ALL motors.
• 12.0mm - The smallest option rotor I have. It has a specific purpose: high speed on large smooth tracks or extra slippery tracks, (low grip). Can work with low wind motors to reduce torque but have high top end. Requires re-gearing and re-timing to assure motor cooling.
• 12.3mm - More traditional of the smaller option rotors, more torque than the 12.0mm rotor. If you need the high speed of 7.0, 7.5, 6.5, 6.0, and 5.5 motors but need lower torque to keep from blowing tires away during cornering, then this rotor is the ticket. Requires re-gearing and re-timing to assure motor cooling.
• 13.0mm - Option rotor best used in 5.0, 4.5, 4.0, 3.5, and 3.0 drag motors. Have tested them in higher wind modified motors on oval tracks with good results. This rotor out torques the 12.5mm rotor by a large margin, will need to use the ESC to add timing as the car speeds up for best results. Requires re-gearing and re-timing to assure motor cooling.
• 13.5mm - Monster torque in option rotors! The airgap is just .5mm (about 0.020"), which really puts the torque to the road! Definite loss of top end unless you use the ESC to bring timing in as RPM increases. Use this rotor for drag racing in 4.5, 4.0, 3.5, and 3.0 motors. Requires re-gearing and re-timing to assure motor cooling.

As with all motors used in competition, use a high velocity fan to keep that baby cool! Watch your gearing and timing; these two factors contributes the most to motor life. The contactless IR temp gun is a must in your box to tune the motor. Max running temp is 160 degrees F! More info about tuning are in my blogs!