Euro-style frame bracket-strap chimney antenna mount...anyone use these?

[TrainsOfThought]

I'm wondering if anyone has used these (seemingly English style...in vids and pics) heavy duty corner brackets w/ratchet metal straps?

I'm considering a dual set on my brick chimney to mount a 10-15 foot telescoping mast (ALSO guyed) 6 element VHF 155-175 MHz base station yagi + Yaseau 450 rotator. These antenna mounts are currently on back order from multiple US distributors with June/July projected arrival windows.

We had our chimney Professionally renovated and re-pointed some years ago...yes, I know all the pro/cons re brick chimney mounts. I really like these using familiar ratcheting to tighten (same as tying down my big equipment to my trailers), now including strap corner protectors.

I had some other mounting options on the property (garage roof, house roof tripods w/roof nail holes...) but would entail LONGER coax LM400 runs; the chimney is directly above my home office so grounding and coax run would be less than 50' straight down.

 

[mmckenna]

I haven't used those "Euro" style mounts. I've used the older style.
People may tell you that it's a bad idea and that the chimney will collapse in a strong wind. Where I live, the standard is for rebar reinforced chimneys. That's for earthquakes. After having gone through some 7+ quakes, I've never seen a modern chimney collapse around here.
I have a 10 foot pole on mine, been up there for almost 20 years, but I only have a small antenna on it.

I'd be a bit nervous about a Yagi and rotor. You'd need to look at the wind loading and compare that to the most/mount ratings.

Looking at the photos, it looks like it's a fabric type strap. That may be just fine if it's treated for UV resistance. I'd be concerned about the sharp edges on the brick, but that could be addressed with some 90º angle iron with rounded off edges to spread the load out. The mount I use has metal straps and I haven't had any issues with them.

 

[TrainsOfThought]

The thing I like about these mounts are the large welded brackets that better distribute weight and stresses.
The strapping is UV resistant. I can't find the image of the poly corner protectors that can go under the strapping at those pressure points.

Distributor with best info:

https://chimneymounts.com/

Ratchets breaking strain: Exceeds 1,900 pounds
PET Strap breaking load: Exceeds 1,300 pounds-force

https://chimneymounts.com/galvanizing/

 

[TXFitz]

Those look well designed and certainly would help distribute the loading vs the standard metal straps I see on Amazon. I installed the metal strap type on my parents' house with a 20 foot pole and a two wire dipole and it held for years in all the Oklahoma winds and storms. The only weakness I see as previously mentioned, is the strapping material. I don't know how long that will hold up to sun and weather over the years.

 

[asif]

from a reviewer on the chimney mounts site:
Very easy to install mast. Strap is NOT fabric but coated steal.