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Old 22 October 2006, 13:00   #11
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Country: Other
Town: Christiansted.V.I.
Boat name: Froggy
Make: Avon SeaRider
Length: 4m +
Engine: Johnson 50
Join Date: Oct 2006
Posts: 312
Yes thanks Stoo

Fab capability is very limited here and the cost is just unimaginable. With a good pic possibly I can put a drawing together and have it made up North.

I saw diving in your profile....we do a lot of that here. The entire N shore of St. Croix is a cliff. It drops off suddenly to 6,000 ft and between here and St. Thomas, 32 nautical miles, it is 19,280 ft. deep.

I guess you must dive in August or resort to going in through a hole in the ice! What kind of stuff do you do...is the water clear?

tomas
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Old 22 October 2006, 13:20   #12
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Country: Canada
Town: Tobermory, Canada eh
Boat name: Verius
Make: Zodiac Hurricane 590
Length: 5m +
Engine: Yamaha F150
Join Date: Oct 2006
Posts: 1,345
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We dive primarily in the Great Lakes. I drag my RIB from eastern Lake Superior to the St. Lawrence River, but home base is Tobermory. I log about 4 - 5000 km on my boat trailer annually!

Our diving is almost all wreck diving and the best ones are in the 100' to 200'+ range. The St. Lawrence has a lot of fish... large and smallmouth bass, pickeral, pike, sheepshead, perch etc. Because of the current, there is no thermocline there, which the fish appear to prefer. In the Lakes themselves, the water is pretty cold though. Below 25m, it never gets above 3 degrees C. Generally, we "hardcore" types are in the water by late April when the ice leaves and I will likely be able to get out until late November, although it gets pretty unpleasant... a lot of wind with increasing precipitation in the form of sleet, rain, snow. Strictly drysuits! We travel to the Carribbean every year to defrost, but have never made it to your area. I worked in the Bahamas and Grand Cayman in my mis-spent "yoot" teaching and guiding and on occasion, I regret my decision to come back to Canada. As retirement looms in the next 10 years, I am starting to consider southern options for part of the year anyway!

I have been corresponding in PM with "Diver" who dives in the Baltic and the diving sounds similar. There are some great pictures of some of my favorite sites here... http://www.wrecksandreefs.com/newpage1.htm (in the Great Lakes section)

It might take me a few days to locate a picture of the old boat, but I will see if I can find something....
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Old 22 October 2006, 13:34   #13
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Country: Other
Town: Christiansted.V.I.
Boat name: Froggy
Make: Avon SeaRider
Length: 4m +
Engine: Johnson 50
Join Date: Oct 2006
Posts: 312
Northern Water

Yes, it's different up there. A few years ago I was in the maritimes and took a small zodiac with me. We were East of Prince Edward Island and determined to haul our gear out to a small island which was three miles or off shore. There had been a lot of fog and drizzle but the morning we decided to go it had cleared. We decided to leave all the camping gear behind and do an exploratory. The island was beautiful, uninhabited and had a large horseshoe bay with sandy beach. We decided to go back, get gear and return. Well, on the way back the damn fog rolled in so fast that pretty soon we were blind. I wasn't worried about finding the mainland but at about that time what I guess was a sea lion rolled up out of the water right next to the boat and was about four times larger than we were. It scared the CRAP out of my wife and I admit thrilled me as well. He could have tossed us with the slightest effort.

The fog remained which allowed us not to admit defeat at the hands of sea mammals and we stayed the next two nights in a room!
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Old 23 October 2006, 11:02   #14
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Country: UK - Scotland
Town: Ayrshire
Boat name: Raven
Make: Ribcraft
Length: 5m +
Engine: 150 suzuki
MMSI: 235040525
Join Date: Aug 2006
Posts: 653
Quote:
Originally Posted by Tomas View Post
Here's the photo of the failed A Frame. I thought it was a 640 x 480 but when I look at properties it exceeds to 200 kb limit and won't post.

Link:

http://i118.photobucket.com/albums/o...3/IMG_0241.jpg
Looks like a run over tesco trolley.
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Old 23 October 2006, 14:04   #15
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Country: USA
Town: Oakland CA
Length: 3m +
Join Date: Feb 2005
Posts: 6,653
These things aren't really rocket science. It is simply a structure that mounts to the boat, carries a small parcel of mass, needs to be designed and mounted so as to withstand vibration from slightly above normal operation.

Can't tell from the pic, but is the tube stainless? And how about the bases?

Did the welds at the tube-to-base joint fail, or did the weld hold and the tube fail? (That'll tell you if it was a poor welding job, or if the design was not vibration proof.)

In either case, a good welder should be able to re-integrate the arch and plates in just a few minutes. Whether or not it would fail again is another matter, though.

The case for knees is a good one; it will prevent fore/aft flexing at the welds, which is probably what took it apart in the first place. Another solution would be to add some clamps further up the tubes to secure them to the transom (assuming they mount a ways down. You're trying to change the harmonic resonance of the free-standing tube.)

Good luck;

jky
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Old 24 October 2006, 12:36   #16
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Country: Other
Town: Christiansted.V.I.
Boat name: Froggy
Make: Avon SeaRider
Length: 4m +
Engine: Johnson 50
Join Date: Oct 2006
Posts: 312
[QUOTE=jyasaki;171077]
Can't tell from the pic, but is the tube stainless? And how about the bases?
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Old 24 October 2006, 12:43   #17
Member
 
Country: Other
Town: Christiansted.V.I.
Boat name: Froggy
Make: Avon SeaRider
Length: 4m +
Engine: Johnson 50
Join Date: Oct 2006
Posts: 312
Last post could use a message eh!

It's stainless and was it looks like chrome plated. The tubes failed three inches or so above the plates. I have not opted to add "knees" to this rig because the tubing is so light and the plate, etc. at the top so heavy. Fabricating here from scratch is out of the question. We're only 84 square miles and lie 1,200 miles SE of Miami, Florida.

I was hoping someone had knowlege of who fabricates real A-Frames and may have the SeaRider configuration. I can only assume that Avon had a hand in the bad unit I received since it came from their facility directly to me. I'm also surprised that they failed to respond when I informed them of the accident and suggested they look into it. Anyway, enough bitching but if anyone else on this site had that configuration....better purchase a helmet!

Thanks for your comments.

Tomas
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Old 24 October 2006, 22:36   #18
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Country: USA
Town: Punta gorda Fl.
Boat name: War Machine
Make: Falcon U.S.A.
Length: 9m +
Engine: twin 250 Yamaha
Join Date: Jan 2006
Posts: 936
Quote:
Originally Posted by Stoo View Post
We dive primarily in the Great Lakes. I drag my RIB from eastern Lake Superior to the St. Lawrence River, but home base is Tobermory. I log about 4 - 5000 km on my boat trailer annually!

Our diving is almost all wreck diving and the best ones are in the 100' to 200'+ range. The St. Lawrence has a lot of fish... large and smallmouth bass, pickeral, pike, sheepshead, perch etc. Because of the current, there is no thermocline there, which the fish appear to prefer. In the Lakes themselves, the water is pretty cold though. Below 25m, it never gets above 3 degrees C. Generally, we "hardcore" types are in the water by late April when the ice leaves and I will likely be able to get out until late November, although it gets pretty unpleasant... a lot of wind with increasing precipitation in the form of sleet, rain, snow. Strictly drysuits! We travel to the Carribbean every year to defrost, but have never made it to your area. I worked in the Bahamas and Grand Cayman in my mis-spent "yoot" teaching and guiding and on occasion, I regret my decision to come back to Canada. As retirement looms in the next 10 years, I am starting to consider southern options for part of the year anyway!

I have been corresponding in PM with "Diver" who dives in the Baltic and the diving sounds similar. There are some great pictures of some of my favorite sites here... http://www.wrecksandreefs.com/newpage1.htm (in the Great Lakes section)

It might take me a few days to locate a picture of the old boat, but I will see if I can find something....
great link stoo!
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