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Changes to Step #45

Edit by Michael Hackney

Edit approved by Michael Hackney

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[title] Tensioning the belts
[* icon_note] In this step you are going to tension and test each tower, one at a time.
[* red] Starting with the '''X''' tower, loosen the two screws that fix itthe upper corner bracket to the towerstower as shown in the first photo.
[* red] Starting with the '''X''' tower, loosen the two screws that fix itthe upper corner bracket to the towerstower as shown in the first photo.
[* red] Using your thumbs or a helper, push UP on the top unit to tension the belt. Tighten the screws securely.
[* red] You will make the belt frequency measurement at the midpoint of the belt. It is important that your phone's mic is pointed directly at the belt as shown in the second photo. It should be 1-2cm from the belt when making the measurement as shown in the third photo.
[* red] Press the red '''MEASUREMENT''' button on the app and hold the mic 1-2cm from the belt. Then pluck the belt briskly with a finger. You can see how I did this with my index finger in the second photo. You need to pluck hard enough to get a good signal on the app. The closer you can hold the microphonemic to the belt, the better the signal will be.
[* icon_note] You may have to pluck multiple times with stronger plucks. If you do not get a reading, this may indicate your belt is not tensioned enough. You should be able to hear a very low frequency bass frequency.
[* icon_note] You'll know you got a good signal when the app shows the the frequency in Hz at the bottom of the screen as shown in the second photo in ''Step 44''.
[* red] You want a reading between 38 and 41Hz but don't worry if yours is not exactexact or a little higher than his, you do not want your belts so tight that they oscillate at 50Hz. If your belt is not within the specified range, loosen the two screws, retentionre-tension the belt and repeat the measurement steps until it is. Do this for all three belts.
[* red] Press the red '''MEASUREMENT''' button on the app and hold the mic 1-2cm from the belt. Then pluck the belt briskly with a finger. You can see how I did this with my index finger in the second photo. You need to pluck hard enough to get a good signal on the app. The closer you can hold the microphonemic to the belt, the better the signal will be.
[* icon_note] You may have to pluck multiple times with stronger plucks. If you do not get a reading, this may indicate your belt is not tensioned enough. You should be able to hear a very low frequency bass frequency.
[* icon_note] You'll know you got a good signal when the app shows the the frequency in Hz at the bottom of the screen as shown in the second photo in ''Step 44''.
[* red] You want a reading between 38 and 41Hz but don't worry if yours is not exactexact or a little higher than his, you do not want your belts so tight that they oscillate at 50Hz. If your belt is not within the specified range, loosen the two screws, retentionre-tension the belt and repeat the measurement steps until it is. Do this for all three belts.