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Message ID: 239     Entry time: Thu Feb 27 12:16:22 2020
Author: Marie K. 
Type: Progress 
Category: BS BRDs 
Subject: BRD5_v5 & BRD6_v5 off the BS 

Today I removed the BRD5_v5 and BRD6_v5 from the BS suspension, after their 6 months stay.

I measured their tuning right after. The identification of the BRD is not visible (it is written on the blade but hidden in the mount). So I just assigned a new name to the BRDs.

The measurements below confirm that the BRDs are still within range(+/-1%) after 6 months.

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BRD5a_v5 - Bounce Mode

Measurement # Frequency [Hz] Q
4 16.672 118
5 16.703 113
6 16.656 -
Mean 16.68 116

Tuning is 0.1%

BRD5a_v5 - Roll Mode

Measurement # Frequency [Hz] Q
1 24.250 84
2 24.234 86
3 24.234 86
Mean 24.240 85

Tuning is 0.4%

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BRD6a_v5 - Bounce Mode

Measurement # Frequency [Hz] Q
1 16.578 53
2 16.531 43
3 16.578 50
Mean 16.562 49

Tuning is 0.8%

BRD6a_v5 - Roll Mode

Measurement # Frequency [Hz] Q
21 24.219 -
22 24.188 67
23 24.141 66
Mean 24.183 67

Tuning is 0.6%

 

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