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# A Note on the Polarity of the Famous TT Motor

I’m using this article to record the polarity (direction) of the TT motor, which is commonly used in hobby models.

<figure><img src="/files/vYtAcm29DmPZXxl5xKYY" alt=""><figcaption></figcaption></figure>

After some testing, we get the following relation between the motor and the wheel:

<figure><img src="/files/zxZrjWjnlmDnP13mjfYL" alt=""><figcaption></figcaption></figure>

We define "positive" direction of the motor to be the counterclockwise rotation of the motor shaft when facing the motor shaft.

<figure><img src="/files/DX6XlBwsNmB5Cb46R7LN" alt=""><figcaption></figcaption></figure>

And thus, we can know that the “positive” lead of the motor is at the left side, when viewing from top to bottom

<figure><img src="/files/hFAqudBvkPh6KlesTtQi" alt=""><figcaption></figcaption></figure>