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BRAZO
Joined: 29 Jul 2008
Posts: 650
City/Region: Full-time Travel
State or Province: NV
C-Dory Year: 2008
C-Dory Model: 22 Cruiser
Vessel Name: Meyer Meyer
Photos: BRAZO
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thataway
Joined: 02 Nov 2003
Posts: 21358
City/Region: Pensacola
State or Province: FL
C-Dory Year: 2007
C-Dory Model: 25 Cruiser
Vessel Name: thataway
Photos: Thataway
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 Posted: Thu Oct 02, 2008 9:50 pm Post subject: |
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I would build a flat platform on the roof as I did for the air conditioner on the Tom Cat. I have used round flanges about 6" in diameter directly on the roof. These flanges are somewhat flexiable and confirm to the roof.
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Bob Austin
Thataway
Thataway (Ex Seaweed) 2007 25 C Dory May 2018 to Oct. 2021
Thisaway 2006 22' CDory November 2011 to May 2018
Caracal 18 140 Suzuki 2007 to present
Thataway TomCat 255 150 Suzukis June 2006 thru August 2011
C Pelican; 1992, 22 Cruiser, 2002 thru 2006
Frequent Sea; 2003 C D 25, 2007 thru 2009
KA6PKB
Home port: Pensacola FL |
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BRAZO
Joined: 29 Jul 2008
Posts: 650
City/Region: Full-time Travel
State or Province: NV
C-Dory Year: 2008
C-Dory Model: 22 Cruiser
Vessel Name: Meyer Meyer
Photos: BRAZO
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| Posted: Thu Oct 02, 2008 10:04 pm Post subject: |
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Bob -- question on the round flanges:
-- I'm not sure I understand what the round flanges are -- could you further explain?
Thanks. |
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Da Nag
Joined: 24 Oct 2003
Posts: 2832
City/Region: Port Angeles
State or Province: WA
C-Dory Year: 1995
C-Dory Model: 25 Cruise Ship
Vessel Name: Wilbur
Photos: Da Boats
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| Posted: Thu Oct 02, 2008 11:30 pm Post subject: Re: Flat based Radar Mount -vs- curve in roof |
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| BRAZO wrote: | | Has anyone installed a flat radar mount base in the middle of the CD22 roof? If so, did the radar mount "pull down" flat? Or did you need to shim up the sides? |
Not on a 22, but I did so on my 19 which has the same cabin top curve - you can see the mount in this pic.
I don't recall the exact base size, but it was fairly close to 10" x 10". On mine, there was no need to do anything special - the base wobbled just a hair when set in place, which was easily addressed by placing a stainless washer between the plate and the cabin top at each corner. The curve in the cabin top is pretty minor.
After snugging up the base, I taped off the base/cabin top leaving about 1/4" exposed, and laid down a thin bead of white sealant in the gap.
Looked great, and was solid as a rock.
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 Will, C-Brat Nerd |
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thataway
Joined: 02 Nov 2003
Posts: 21358
City/Region: Pensacola
State or Province: FL
C-Dory Year: 2007
C-Dory Model: 25 Cruiser
Vessel Name: thataway
Photos: Thataway
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| Posted: Fri Oct 03, 2008 6:55 pm Post subject: |
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The radar mounts which I build use 4" PVC pipe, and PVC water closet (toilet) flanges top and bottom. The top is boated to a piece of Starboard, and the bottom is thru bolted thru the cabin top. The outer part of the flange may be slightly more than 6"--it is put in with the bolts on the bias (at 45 degrees to fore and aft). Thus the part which is bolted is not far apart--about 6". The air conditioner, was a 14" square cut out, with a 2" flange, built around the outside.
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