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R6-R5 Rotor Details and Uses

Mark Fulton |

Rotor dimensions are critical to performance. Unless you talk with an 'expert', use a 12.5mm rotor for best overall performance. Drag Race winds can benefit greatly for larger rotors but ask!
PLEASE NOTE: The number one discussion a racer has with me is the R5 or R6 running hot. A new racer to the R5 & R6 typically gears the same as their other motors without regard to what the R5 & R6 wants for gearing. EXPECT to reduce the teeth number on your pinion by at least three teeth (for example, if you typically run a 30 tooth pinion, use a 27 for your initial testing). Do this, and run a fan, you will see great performance from the R5 & R6. The following chart is a suggestion only!
KV Rating: Tested on Motolyser and will vary by rotor size and type installed (all motors tested with 12.5mm rotor diameter). These are actual average values as tested.
SUGGESTED MOTOR USE 
*Timing/OAR: Suggested starting point (Monitor temp!). Use motor checker to confirm timing. Will depend on intended use, track size, and OAT!
 Wind Rotor (Std/Opt) Use KV

*Can Timing

*OAR
3.0 12.5/13.0/13.5 Drag 11300
3.5 12.5/13.0/13.5 Drag 9600
4.0 12.5/13.0 Drag 8400
4.5 12.5/13.0 Drag 8050
5.0 12.5/13.0 Drag/Drag 7700 21
5.5 12.5/12.3/12.0 Oval/Drag 7100 25 10.40
6.0 12.5/12.3/12.0 Oval/Offroad 6700 33 9.50
6.5 12.5/12.3/12.0 Oval/Offroad 6100 32 9.50
7.0 12.5/12.3 Oval/Offroad 5700 34 9.16
7.5 12.5/12.3 Oval/Offroad 5550 36 8.74
8.0 12.5 Oval/Offroad 5300 39 8.42
8.5 12.5 Oval/Offroad 5200 39 8.32
9.0 12.5 Oval/Offroad 4700 39 8.32
9.5 12.5 Oval/Offroad 4400 39 8.32
10.5WMW 12.5 Oval/Offroad 4200 38 8.10
13.5TEX 12.5 Oval/Offroad 3400 44
10.5 Spec 12.5 Spec Oval/Offroad 4650 46
13.5 Spec 12.5 Spec Oval/Offroad 3700 46
17.5 Spec 12.5 Spec Oval/Offroad 3000 48
21.5 Spec 12.5 Spec Oval/Onroad 2500 46
25.5 Spec 12.3 Spec Onroad 2000 46

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