Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 29-03-2008, 18:42   #16
Senior Cruiser

Join Date: Apr 2006
Posts: 2,453
Now - I'm going to interject. Mark J - that is one of the most horrific slaughtering of quotes I've seen in a long time. I'm sure that I could pull different words and plug them all together that would make someone appear to be Osama Ben Laudin. And then YOU talk about misrepresentation. OMG GAB
__________________

__________________
S/V Elusive is offline   Reply With Quote
Old 29-03-2008, 18:51   #17
Long Range Cruiser
 
MarkJ's Avatar

Cruisers Forum Supporter

Join Date: Dec 2007
Location: Australian living on "Sea Life" currently in England.
Boat: Beneteau 393 "Sea Life"
Posts: 12,828
Images: 25
Quote:
Originally Posted by S/V Elusive View Post
Osama Ben Laudin.
LOL OK, OK!
__________________

__________________
Notes on a Circumnavigation.
OurLifeAtSea.com

Somalia Pirates and our Convoy
MarkJ is offline   Reply With Quote
Old 29-03-2008, 19:04   #18
Sponsoring Vendor

Community Sponsor
Cruisers Forum Supporter

Join Date: Mar 2008
Location: Milton, Ontario
Boat: still dreaming...getting close...
Posts: 192
Quote:
Originally Posted by S/V Elusive View Post
Osama Ben Laudin.
Hardy har, har, har....
__________________
Atkins & Hoyle Ltd. Over 40 years of Marine Innovation, Quality and Craftsmanship
Davits, Hatches, Ports, Hatch Repairs, Motor Lifts, Arches/Hardtops and Custom Designs www.AtkinsHoyle.com |atkinshoyle@dapa.com
Benjamaphone is offline   Reply With Quote
Old 29-03-2008, 20:38   #19
Registered User
 
johneri1's Avatar

Join Date: Dec 2007
Location: Newport, OR/Pocatello, ID
Boat: Newport MKII 30 - Solution
Posts: 192
"Bent" conotes sticking something in a vise and beating it with a hammer. Fabrication, engineered properly i.e., hot vs cold break, gussets, heat treat, etcetera, yields some of the strongest assemblages in the world: race car frames, rollbars, crash bars, motorcycle frames, and probably davitts as well. Just two cents worth from someone who has spent a lot of years earning a living in machine shops. . . .
__________________
Eric
N30
johneri1 is offline   Reply With Quote
Old 30-03-2008, 09:10   #20
Sponsoring Vendor

Community Sponsor
Cruisers Forum Supporter

Join Date: Mar 2008
Location: Milton, Ontario
Boat: still dreaming...getting close...
Posts: 192
By bend, I do not mean whacking it with a hammer. A clean bend could not be produced by putting it in a vise and muscling it over. The tube would crimp and be worthless. Rather, bending a tube with a roll-bender or some other specialized machine is how this is accomplished, as I am sure that you know. However, this does not retract from the fact that bending stainless thins the wall of the tube...thus making it weaker. A weaker tube means weaker davits.

You talk about heat treating and gussets but, why would you go through all the trouble? Why should there be a bend in the first place? Why go through all the fuss of reinforcing a technique that produces a weaker end product? You could weld and reinforce a bend to high heaven but at some you have to look at the thing as say, "this is over-kill".
__________________
Atkins & Hoyle Ltd. Over 40 years of Marine Innovation, Quality and Craftsmanship
Davits, Hatches, Ports, Hatch Repairs, Motor Lifts, Arches/Hardtops and Custom Designs www.AtkinsHoyle.com |atkinshoyle@dapa.com
Benjamaphone is offline   Reply With Quote
Old 30-03-2008, 09:58   #21
Senior Cruiser
 
DeepFrz's Avatar

Cruisers Forum Supporter

Join Date: Mar 2006
Location: Winnipeg
Boat: None at this time
Posts: 7,930
Ya know, it all comes down to engineering. Strength, cost, weight and appearance trade-offs. I mean this thread is senseless except for one thing. You are using it to promote your product. And this is not the place to be doing that. I think you have done yourself harm in keeping this thread going.
__________________
The Blue Dot Campaign. This Changes Everything.
DeepFrz is offline   Reply With Quote
Old 30-03-2008, 14:03   #22
CF Adviser
 
Pelagic's Avatar

Cruisers Forum Supporter

Join Date: Oct 2007
Boat: Van Helleman Schooner 65ft StarGazer
Posts: 6,895
Deepfrz, why is it that an amateur’s opinion is treated with more courtesy than a professionals?

I am amazed that when a professional fabricator takes the time to offer his opinion and advice on a subject he makes his living at, that some view that opinion with distrust, cynicism and veiled contempt.

The only reason that this thread has kept going is that some have made personal attacks which I believe are totally unwarranted and detrimental to the spirit of this forum.

I for one encourage professional opinions and can easily partition any marketing enthusiasm to it’s rightful place.
__________________
Pelagic is offline   Reply With Quote
Old 30-03-2008, 14:22   #23
CF Adviser
 
Pelagic's Avatar

Cruisers Forum Supporter

Join Date: Oct 2007
Boat: Van Helleman Schooner 65ft StarGazer
Posts: 6,895
I am curious Ben, when calculating the SWL for a set of Davits that will say be designed to handle a typical tender that Wheels described….. say 300lbs

1. What do you design for?
2. How do you test and measure it?
__________________
Pelagic is offline   Reply With Quote
Old 30-03-2008, 14:52   #24
Senior Cruiser
 
Cheechako's Avatar

Cruisers Forum Supporter

Join Date: Aug 2006
Location: Skagit City, WA
Posts: 19,369
Nothing wrong with bends...it's all about design. a staight beam will have extreme loads at the attachment point. A bend work-hardens the stainless so the outside of the bend has a higher strngth. Cast aluminum can be very brittle and unless it goes thru aerospace style x ray inspection could have casting defects. While alum spec's have it as strong as Stainless, aluminum is much worse when it comes to cycle fatigue (repeated flexing for instance) Aluminum also has only about 35% as much non permanent deflection as stainless..before it fails.... either is fine if engineered properly.... (the above is quik and general...)
__________________
Cheechako is offline   Reply With Quote
Old 31-03-2008, 01:25   #25
Senior Cruiser
 
Alan Wheeler's Avatar

Cruisers Forum Supporter

Join Date: Dec 2003
Location: Marlborough Sounds. New Zealand
Boat: Hartley Tahitian 45ft. Leisure Lady
Posts: 8,038
Images: 102
Quote:
Deepfrz, why is it that an amateur’s opinion is treated with more courtesy than a professionals?
Sorry for the interuption in your viewing folks. But I think it only fair to explain a few things and why we have some giving Ben a hard time.
First of all, most Community Forums do not allow "Vendors" to post about their products. We here at CF went a little step better and decided to create a place that Vendors could discuss their Product. That is what you all see at the bottom of the Forum called the "Vendors Forum". Several posters and including myself have thought and some may still think that Ben's post is "promotional" on behalf of Atkins & Hoyle. I made a post stating such and didn't realise one of our Mod/Admin team had been working in the background with Ben on how to modify his post. Once I had learn't that, I removed my comment. Although I do want to be clear that my comment was about the post and not Presonaly about Ben.
So moving right along. Why do we have a "Vendor Forum"?? Well this is so Vendors can talk about their products. I think this maybe rather unique as far as Community forums go, but I maybe wrong. The idea is that any member can then if they so wish, go take a look and read promotional information about a Vendors product.
The "Team" have decided to allow Bens thread here to remain, as long as none of his products are promoted in anyway. You will also note that Bens name to the left now has "Vendor" under it and not his business.
Ben did go to a great deal of trouble rewording his original text and does not include any information about his product. I think Ben is passionate about what he does and as such has offered his comments. But like all good discussions on this board, comments are up for debate.
We will now return you to your regular viewing.
__________________

__________________
Wheels

For God so loved the world..........He didn't send a committee.
Alan Wheeler is offline   Reply With Quote
Reply

Tags
davits

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Davit pulley turkish6 Auxiliary Equipment & Dinghy 14 28-03-2008 08:25
Davit connection points on tender aquaman_001 Auxiliary Equipment & Dinghy 8 21-02-2008 08:33
Bent Boom clausont Deck hardware: Rigging, Sails & Hoisting 10 29-11-2007 19:34
Philosophical bent... bcguy General Sailing Forum 10 30-12-2006 11:16
Does anybody have experience with this Davit system??? exposure General Sailing Forum 5 27-08-2004 08:57



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 03:23.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.