Advise for hanging 25kg heavy bag from pergola

[goncoza]

Hi Guys,

I recently got a heavy bag for my birthday and hang it from our pergola in the backyard; as I started exercising with it came to realise that it gets very noisy every time I punch/kick the bag. Perhaps is nothing to worry about and the noise is normal, given that the roof is of a plastic like material; in any case, Both my wife and I are wondering whether the pergola structure is sound enough for holding the weight and the motion of the swinging bag... At this point I am not using the heavy bag anymore, to avoid people getting too nervous...

It would be great if anyone can provide any advice/thoughts   

Details:

The heavy bag is 4 feet long but only 25kg

I have an average height/weight (175cm/ ~80kg), so it is not like the Rock or Chris Hemsworth is punching the bag

I am attaching a few photos of the setup; (note1: please do not mind my terrible quick and dirty knot ; note2: ignore the purple string in one of the photos, it was to mark a possible location of where the bag would go; at the end, I decided to place the bag in the cross-section of two beams)

The part I am worried about the most with this setup is one of the ends of the beam that the heavy bag hangs from (see the last pic); so any particular thoughts/comments about it are particularly welcomed   

[tom_builds]

Hey @goncoza that's the style of attachment, but I'd rather that there wasn't any hang from the bottom of the beam to the shackle. I just had a quick look and found this hook for attaching bags to beams, could be worth a look.

[goncoza]

Hi @tom_builds , thanks for the link; it is totally clear what you meant. I'll definitely look into it