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Old 12 March 2013, 16:44   #11
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Country: UK - England
Town: Barton
Boat name: EyeCatcher
Make: Ribeye A600
Length: 6m +
Engine: Yam F115
MMSI: 235097872
Join Date: Nov 2012
Posts: 53
Thanks Bert Looks like I will have to Wave goodbye to my shiny A frame
I like the idler of the ratchet mounted 6 antenna but it sounds as though it may be more of a whip than antenna on a rib or are they more rigid than I imagined. Off to do some research on longer antennas.
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Old 12 March 2013, 20:51   #12
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Country: UK - Scotland
Boat name: Wildheart
Make: Humber/Delta Seasafe
Length: 5m +
Engine: Merc 60 Clamshell
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Join Date: Apr 2007
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My frame is ally.

....not shiny by any stretch of the imagination, but still made of Aluminium tube.

From memory there's a couple of reasonable close-ups in the "wake shot" thread if you want to see an aluminium one with 30 years' use behind it.
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Old 13 March 2013, 04:45   #13
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Country: Netherlands
Town: groningen
Boat name: tess, searanger
Make: sailer, avon 5,4
Length: 8m +
Engine: inboard, suzuki 90
Join Date: Jul 2010
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no probs.
With an Aluminium Hull it's allways looking out what to do and it's ok to do some research. you have to watch out with the electricals to (connections to your antanna) Al. can be shiny to after bending and welding plish it and give it a cover of clear laquer?
Or use seawater resistant al. and polish it. will work to.

Thought i react before there is some damage u don't know where its coming from. And please post some pic's to

I myself have a SR5,4 and will be making a A-frame hopefully this year but first i want the boat ready and in the water. I'll be making a copy of an original Avon double A frame suited for a self righting bag (not mounting it)

regards.
bert
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Old 13 March 2013, 04:52   #14
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Country: UK - Channel Islands
Town: jersey
Boat name: Martini II
Make: Arctic 28/FC470
Length: 8m +
Engine: twin 225Opti/50hp 2t
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Unless you use aluminium fixing bolts (not a good idea ) you will still have galvanic corrosion issues. But isolating a stainless a frame from the hull is easy enough, just use nylon backing pads/washers between the two.

Bolting through the floor is the tricky bit, all depends on access to the underside of the deck etc. Corrosion still shouldn't be much of an issue above the waterline anyway if there is small points of contact between dissimilar metals if they're maintained properly, Tefgel is good stuff especially on threads.
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Old 13 March 2013, 15:15   #15
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Country: UK - England
Town: Barton
Boat name: EyeCatcher
Make: Ribeye A600
Length: 6m +
Engine: Yam F115
MMSI: 235097872
Join Date: Nov 2012
Posts: 53
Thanks mainly to the helpful people on ribnet that gave me the right questions to ask and a quick discussion with the man from Ribeye. The shiny "A" frame is back on the shopping list with the nylon plugs to isolate from the aluminium hull
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