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Old 02-13-2010, 07:35 PM   #1
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1972 Bay Breeze AC

Does anyone have a picture of the mounting brackets for the cowling on the Baybreeze ac unit. It is a 1972 vintage and I think it is a TR-21.
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Old 02-13-2010, 09:45 PM   #2
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Does anyone have a picture of the mounting brackets for the cowling on the Baybreeze ac unit. It is a 1972 vintage and I think it is a TR-21.
The original AC shroud, did not have any mounting brackets.

Andy
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Old 02-13-2010, 11:07 PM   #3
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I believe my Armstrong A/C is a TR-21 also.
I circled in red where my cover was attached.
In the lower four corners where the fan is.
Also there is a thin aluminum strip that goes where the dark line is with 4 screws that screws into a brace on the top of the A/C unit
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Old 02-14-2010, 11:56 AM   #4
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I believe my Armstrong A/C is a TR-21 also.
I circled in red where my cover was attached.
In the lower four corners where the fan is.
Also there is a thin aluminum strip that goes where the dark line is with 4 screws that screws into a brace on the top of the A/C unit
Airstream did not install that extra mounting.

But, it is a good after market thing to do as it definately adds additional hold down strength.

Andy
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Old 02-14-2010, 12:25 PM   #5
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Andy,
I didn't get the old cover and I can't tell what holes are for what on my unit. I have the original installation instructions but all they say is install the cover. I assume the original cover had pre-drilled holes.

Bruce,
Is your cover sitting elevated and 1 piece? I bought a new one piece (69812) from Andy and it doesn't have the trim piece around the bottom or the indentation for the strip you describe. I'll have to look again to see if there are any screw holes where the strip is you circled. Does the cover use any foam around the base or does it just sit on the roof without cushioning?
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Old 02-14-2010, 12:39 PM   #6
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Andy,
I didn't get the old cover and I can't tell what holes are for what on my unit. I have the original installation instructions but all they say is install the cover. I assume the original cover had pre-drilled holes.

Bruce,
Is your cover sitting elevated and 1 piece? I bought a new one piece (69812) from Andy and it doesn't have the trim piece around the bottom or the indentation for the strip you describe. I'll have to look again to see if there are any screw holes where the strip is you circled. Does the cover use any foam around the base or does it just sit on the roof without cushioning?
Airstream mounted the shrouds with 4 screws at the top of the cover into the top metal panel of the AC.

They did, on a very few coaches, install 2 horizontal on the roof, but basically as I recall on the TAC-110 model.

Some owners added screws into the bottom of the 70 to 72 AC cover into the roof.

The 73 to 75 models and the 76 to 79 models have inward curved bottoms, that would make it near impossible to attach anything to.

Certainly adding a couple of additional screws to the top of the shroud would help the hold down.

Caution would be suggested as to exactly where those additional screws are located.

Andy
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Old 02-14-2010, 01:01 PM   #7
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Andy,
By extra are you refering to the strip on top that Bruce refers to? My unit was put on by a dealer in Colorado Springs in August of 1972. I can't read the name or know if it was an AS dealer. It looks like there are a couple of broken L bracket remnents on either side but no indication of anything on top, front, or back.
The installation instructions say to install schroud and don't show where the screws go. The unit I got from you is the 69812, how do you mount those in your shop?
Thanks,
Gary
I can send some Pics if you want. I have never attached any on a thread, so not sure how.
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Old 02-14-2010, 01:35 PM   #8
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Andy,
I'm sorry for some reason I keep losing my connection and you respond quicker than I can keep up. Thanks! I just sent an email with PICS and now that I looked again your thread is right on the money.
Thanks,
Gary
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Old 02-14-2010, 03:04 PM   #9
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Andy,
I'm sorry for some reason I keep losing my connection and you respond quicker than I can keep up. Thanks! I just sent an email with PICS and now that I looked again your thread is right on the money.
Thanks,
Gary
Gary.

The top of your AC has a fan. That fan blade is covered somewhat by a square metal screen.

At each corner of that screen, there is a bolt that holds it in place.

Ball park, within an inch or so, you will see a small hole outward from those 4 bolts.

That's where and how the original 4 screws held the AC shroud in place.

As you can see, additional screws can be added, and I would suggest that you use a flat washer underneath each of those screw heads.

The original plastic AC shrouds at high speeds could start to jiggle around.

The replacement fiberglass shrouds are much stronger, and cannot move.

However, adding more mounting screws will just increase the hold down strength.

Hope this answers your concerns.

Andy
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Old 02-14-2010, 03:13 PM   #10
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Andy,
Thank you! Only one more question.. do you need to put some cushion under the edge that sits on the roof like closed cell foam or?
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Old 02-14-2010, 03:27 PM   #11
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Andy,
Thank you! Only one more question.. do you need to put some cushion under the edge that sits on the roof like closed cell foam or?
Not at all.

Andy
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Old 02-14-2010, 04:30 PM   #12
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My shroud is two pieces and is riveted together at the trim piece
The long dark band in the previous photo is where the aluminum strip was, "NO indentation" it was just used as a washer for the four screws.

Here is a picture I stole from Mrwaterway gallery of the A/C unit
I marked in red where the original 4 screws hold down the cover around the fan.
Also drawn in red I have a Z shaped bracket that must have been added to the top of the A/C, this is where they screwed down the shroud with the strip of aluminum with 4 screws.

My original shroud is made of ABS plastic and is less than 1/8" thick, very flimsy.
I would guess the fiberglass one you got from Inland RV is superior.

I saw no evidence of any type of rubber or foam around the base of the shroud and no evidence of wear on the shroud and this is on a well used 1975 Tradewind
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Old 02-19-2010, 08:18 PM   #13
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Bruce and Andy,
Thanks for the information and comments. I really appreciate it.
Gary
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