Cruisers Forum
 

Go Back   Cruisers & Sailing Forums > Search Forums
Reload this Page Search Results
Cruiser Wiki Click Here to Login
Register Vendors FAQ Community Calendar Today's Posts Log in

Showing results 1 to 12 of 12
Search took 0.00 seconds. Search: Posts Made By: mstrebe
Forum: Seamanship & Boat Handling 10-06-2015, 08:54
Replies: 361
Views: 57,496
Posted By mstrebe
Re: Cheeki Rafiki loss report

The Nord-Bolts are very clever, but I imagine expensive. All they are really doing is replacing a single large bolt with a number of smaller ones capable of delivering the same clamping force....
Forum: Seamanship & Boat Handling 02-06-2015, 07:40
Replies: 361
Views: 57,496
Posted By mstrebe
Re: Cheeki Rafiki loss report

There's another potential issue with bolt-on keels.

My boat delivery from the dealer and receiving boatyard was performed very well and according to Beneteau's guidance. This includes mast...
Forum: Seamanship & Boat Handling 28-05-2015, 22:10
Replies: 361
Views: 57,496
Posted By mstrebe
Re: Cheeki Rafiki loss report

Torque depends primarily on the size and alloy of the threaded rod used, for which there are standardized tables engineers use as a baseline. Secondarily the compressibility of the material being...
Forum: Seamanship & Boat Handling 26-05-2015, 17:37
Replies: 361
Views: 57,496
Posted By mstrebe
Re: Cheeki Rafiki loss report

This is similar with aluminum, which will compact under compression and need a follow-on torquing of bolts after a year or so from new. Periodic retorquing is a good measure and should probably be...
Forum: Seamanship & Boat Handling 10-05-2015, 17:23
Replies: 361
Views: 57,496
Posted By mstrebe
Re: Cheeki Rafiki loss report

I'm engaged in this conversation because I find it useful to help me think through all the things that could go wrong with my boat. Vigorous debate distills a lot of useful information, and it's very...
Forum: Seamanship & Boat Handling 09-05-2015, 08:58
Replies: 361
Views: 57,496
Posted By mstrebe
Re: Cheeki Rafiki loss report

Yeah. I know a lot of boat professionals and delivery skippers--San Diego is that kind of town. Great guys, love racing with them.

https://yourlogicalfallacyis.com/appeal-to-authority
Forum: Seamanship & Boat Handling 09-05-2015, 08:56
Replies: 361
Views: 57,496
Posted By mstrebe
Re: Cheeki Rafiki loss report

But that's not my argument. That's just one point I made about the conclusions reached in the report. My argument is that full keels aren't any more survivable in a storm than fin keels, they just...
Forum: Seamanship & Boat Handling 09-05-2015, 08:10
Replies: 361
Views: 57,496
Posted By mstrebe
Re: Cheeki Rafiki loss report

Folks, there's a lot of exaggeration going on in this thread. Sticking to the points regarding _this_ actual grounding, the report points out that the keel-hull joint on this boat had been...
Forum: Seamanship & Boat Handling 07-05-2015, 22:48
Replies: 361
Views: 57,496
Posted By mstrebe
Cheeki Rafiki loss report

From an engineering standpoint, it is trivially easy to design and install a permanent stress indicator into FRP, although I've never seen it done.

All that is needed is the inclusion of a single...
Forum: Seamanship & Boat Handling 05-05-2015, 10:39
Replies: 361
Views: 57,496
Posted By mstrebe
Re: Cheeki Rafiki loss report

Folks, a bolt-on keel can be engineered to the exact same tolerances as a full keel. The Golden-Gate bridge is "bolted on". It's not going anywhere.

The problem isn't the method of manufacture,...
Forum: Seamanship & Boat Handling 03-05-2015, 01:23
Replies: 361
Views: 57,496
Posted By mstrebe
Re: Cheeki Rafiki loss report

No keel is designed to survive having less than all bolts secure. That's how engineering works. You engineer to "this is correctly maintained."

I can't figure out what your second sentence has to...
Forum: Seamanship & Boat Handling 02-05-2015, 10:20
Replies: 361
Views: 57,496
Posted By mstrebe
Re: Cheeki Rafiki loss report

It's important to understand that all nine keel bolts were not equally loose.

It's obvious to my admittedly amateur reading of this damage report that SOME of the keel bolts were loose (those that...
Showing results 1 to 12 of 12

 
Forum Jump


All times are GMT -7. The time now is 09:16.

Contact Us - Cruisers & Sailing Forums - Sitemap - Community Rules - Terms of Service - Privacy - Accessibility - Top

Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
close

Privacy Guaranteed - your email is never shared with anyone, opt out any time.


ShowCase vBulletin Plugins by Drive Thru Online, Inc.