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Discussion: Novak - BRUSHLESS MOTOR GEARING RECOMMENDATIONS

  1. #1
    Date d'inscription
    December 2006
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    Novak - BRUSHLESS MOTOR GEARING RECOMMENDATIONS

    BRUSHLESS MOTOR GEARING RECOMMENDATIONS

    These gearings should be used as a starting point, but the motor and ESC temperatures should always be used to determine the final gearing.

    Neither the motor (with sintered rotor) nor the ESC should be hotter than 160 to 175° F after a five minute run. If either temperature is higher than 160 to 175° F , the gearing should be lowered until both the ESC and the motor (with the sintered rotor) are under this temperature.

    The cooler the ESC runs, the better the performance of the system.


    Motor / Touring Car* / 2wd Buggy* / 2wd Truck* / 4wd Buggy* / 1/12 Scale** / Oval**

    3.5 / 10.5 / Not Rec. / Not Rec. / Not Rec. / 1.1"-28 mm /1.2"-31 mm

    4.5 / 9.5 / Not Rec. / 13 /12 / 1.2"-30.5 mm /1.3"-33 mm

    5.5 / 8.5 / 11 / 12.5/ 11 / 1.3"-33 mm / 1.4"-35 mm

    6.5 / 7.5 / 10 / 11.5 / 10 /1.4"-35 mm /1.5"-38 mm

    7.5 / 7 / 9.5 / 11 / 9.5 / 1.5"-38 mm / 1.6"-40.5 mm

    8.5 / 6.5 / 9 / 10.5 / 9 / 1.6"-40.5 mm / 1.7"-43 mm

    10.5 / 5.5 / 8 / 9.5 / 8 / 2"-51 mm / 2.6"-66 mm

    13.5 / 4.5 / 7 / 8.5 / 7 / 2.30"-58 mm / 2.9"-73.5 mm

    17.5 / 3.5 / 6 / 7.5 / 6 / 2.56"-65 mm / 3.23"-82 mm


    * These gearings are given in the Final Drive Ratio (FDR) form for standard-sized rubber tires. If you choose to use different sized tires, use the formula below (in note **) for rollout to determine the proper gearing for your tire’s diameter.

    Using standard-sized tires to calculate your FDR, first divide your vehicle's spur gear by the pinion gear, then multiply that result by the internal drive ratio of the car. The internal drive ratio can be found in the documentation that comes with your vehicle. EX. (72 spur ÷ 21 pinion) x 2.5 internal drive ratio = 8.57 FDR

    ** Gearing is given in rollout. Rollout is determined by dividing the tire circumference (tire diameter x 3.14) by the spur and pinion gear ratio. EX. (1.75” x 3.14) ÷ (100 ÷ 23) = 1.26 rollout
    If an article is published in a language different from your mother tongue, make yourself sure you can understand the content!

    Si un article est publié dans une langue différente de votre langue maternelle, faites en sorte que vous puissiez comprendre le contenu par vous même!



  2. #2
    Date d'inscription
    December 2006
    Messages
    17 327
    Images
    5610

    Re : Novak - BRUSHLESS MOTOR GEARING RECOMMENDATIONS

    Brushless Gearing Guide for Novak Motors

    These gearings should be used as a starting point, but the motor and ESC temperatures should always be used to determine the final gearing.

    Neither the motor (with sintered rotor) nor the ESC should be hotter than 160 to 175° F after a five minute run. If either temperature is higher than 160 to 175° F , the gearing should be lowered until both the ESC and the motor (with the sintered rotor) are under this temperature.

    The cooler the ESC runs, the better the performance of the system.

    http://www.comeseethis.com/gearing.php
    If an article is published in a language different from your mother tongue, make yourself sure you can understand the content!

    Si un article est publié dans une langue différente de votre langue maternelle, faites en sorte que vous puissiez comprendre le contenu par vous même!



  3. #3
    Date d'inscription
    January 2002
    Messages
    1 885
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    3

    Re : Novak - BRUSHLESS MOTOR GEARING RECOMMENDATIONS

    A votre avis, ces rapports sont valables pour 6 éléments / 2S ?

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