Excavator concrete vibrator attachment - GIF

Excavator concrete vibrator attachment.

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Previously:

https://www.homemadetools.net/forum/...478#post173753
https://www.homemadetools.net/forum/...483#post173759
https://www.homemadetools.net/forum/...696#post136674
https://www.homemadetools.net/forum/...154#post165196
https://www.homemadetools.net/forum/...420#post166193
https://www.homemadetools.net/forum/...666#post163119
https://www.homemadetools.net/forum/...449#post122466
https://www.homemadetools.net/forum/...009#post145012
https://www.homemadetools.net/forum/...349#post110233
https://www.homemadetools.net/forum/...080#post125690
https://www.homemadetools.net/forum/...3231#post77683

I have to admit I have never seen one that large. But I am thinking that vibrators that large would leave a large void when withdrawn that would tend to fill with free water and fine grout rather than well mixed, consolidated concrete. It has always been my understanding that you choose the smallest vibratory head that will be adequate to keep up with placement of the concrete. The largest heads I have ever heard of are 3 1/2 inches, those appear to be much larger.

Attachment 38755

As always I am open to being further educated.