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Showing results 1 to 25 of 48
Search took 0.23 seconds.
Search: Posts Made By: Stumble
Forum: General Discussion (sailing related) 1 Day Ago
Replies: 16
Views: 953
Posted By Stumble
Re: 3D Printing

The company I used to work for made 3d printed titanium parts. Post fabrication HIPPING lead to measured strength at least equal to machined parts. Depending on the design pre hipped parts were in...
Forum: Gear & Maintenance 1 Week Ago
Replies: 28
Views: 1,793
Posted By Stumble
Re: Light air/Downwind sail choices

For a cruising boat Code 0's are generally a terrible idea. There are some out there that can use them to effect, but a code zero is an upwind beating spinnaker that induces a lot of loads on the...
Forum: Gear & Maintenance 2 Weeks Ago
Replies: 8
Views: 506
Posted By Stumble
Re: Pontos Winches

Overdrive winches are just so much fun. Sadly winches just never seem to wear out so its hard to justify upgrading. But if you are willing to splurge self tailing winches in good shape generally sell...
Forum: General Discussion (sailing related) 2 Weeks Ago
Replies: 45
Views: 1,759
Posted By Stumble
Re: Blocks, Sheaves and Pulleys: Did I screw up???

A coupke of things....

Increasing block size from 40mm to 52mm reduces friction by half. For a number of reasons, but bend radius, and bearing shaft size play the largest part. A 40mm block will...
Forum: Introduce Yourself 10-27-2014
Replies: 8
Views: 360
Posted By Stumble
Re: I need a used keel for a 22 foot catalina please help.

Yikes!

Honestly I just don't see fixing the boat you have. A new keel would be thousands more than the boats likely worth (you didn't include age of the boat), and even if you could find one...
Forum: Boat Review and Purchase Forum 10-21-2014
Replies: 22
Views: 1,675
Posted By Stumble
Re: Wooden Turkish Gulet? Are they good charter sailboats?

I am not saying that wooden ships couldn't last longer, but that they weren't expected to. The British navy for example was replaced on average every 14 years (see The Arming and Fitting of English...
Forum: General Discussion (sailing related) 10-20-2014
Replies: 4
Views: 350
Posted By Stumble
Re: Core construction structures

And a short, but informative engineering intro Foam Core Materials in the Marine Industry (http://www.boatdesign.net/articles/foam-core/)
Forum: Boat Review and Purchase Forum 10-20-2014
Replies: 22
Views: 1,675
Posted By Stumble
Re: Wooden Turkish Gulet? Are they good charter sailboats?

Keep in mind that traditional wooden vessels were assumed to have a useful life of less than 20 years. While a 20 year old fiberglass vessel is just getting ready for new electronics. Putting a...
Forum: Racing 10-06-2014
Replies: 20
Views: 1,322
Posted By Stumble
Re: Spinnaker shackles

Faster,

When dealing with dyneema it isn't the strength loss from the knot so much as it is the knot undoing itself as the line slides past itself. Depending on size dyneema has shown a propensity...
Forum: General Discussion (sailing related) 10-02-2014
Replies: 10
Views: 709
Posted By Stumble
Re: Replacing Two Part Halyards with Spectra

For a Lido I would probably just go to strait dyneema and make sure your cam cleats are in good shape. Your halyards are pretty lightly loaded, so I wouldn't worry to much about adding tails. It just...
Forum: Gear & Maintenance 09-10-2014
Replies: 132
Views: 4,590
Posted By Stumble
Re: How does the marine industry price?

One of the other issues in pricing marine parts is the very slow turnover. A grocery store for instance expects to sell everything on the shelves in much less time than WestMarine, which allows the...
Forum: Introduce Yourself 08-02-2014
Replies: 27
Views: 1,420
Posted By Stumble
Re: Just set sail

Heather,

To some extent it depends on which Oday you guys have. However in general your husband is correct. Absent very high winds (in excess of 50kn) or wave action, it is almost impossible for a...
Forum: General Discussion (sailing related) 07-26-2014
Replies: 1
Views: 424
Posted By Stumble
Re: What kind

Someone may know, but if not. Check the transom on the top starboard quarter. There should be a HIN embossed in the fiberglass.
Forum: Chartering 07-23-2014
Replies: 27
Views: 1,976
Posted By Stumble
Re: What license should I pursue?

Unless you already have substantial amounts of sea time this is not going to be possible. At a minimum to operate in the US you would need a OUPV license, but this restricts you to no more than six...
Forum: Pearson 07-21-2014
Replies: 8
Views: 485
Posted By Stumble
Re: P26 Genoa track and cars

I sounds like some sort of hash up by a PO, or a weird installation. Track ends are supposed to be removable, and with a minimum of fuss, but obviously that doesn't sound like what you have.

My...
Forum: Racing 06-10-2014
Replies: 6
Views: 980
Posted By Stumble
Re: ilc 40 conversion

There are a number of boats that have gone to a Farr 40 rig, square top main, split backstays, mast head kites, and turbo poles.

Frankly for the cost of doing all this you would probably be...
Forum: General Discussion (sailing related) 06-06-2014
Replies: 10
Views: 797
Posted By Stumble
Re: Trolling motor to mooring

Very roughy numbers (and be warned electric conversions aren't my strong suit).

A 45lb thrust motor drawn up to 42amp.
400 yards ~= .2nm

Assuming 3kn speeds (at full throttle), then it would...
Forum: General Discussion (sailing related) 06-06-2014
Replies: 10
Views: 797
Posted By Stumble
Re: Trolling motor to mooring

How big of a battery does the dinghy have?

I used a 45lb trolling motor on my Olson 30' for a while to get in and out of the harbor. It would get the boat to about 3kn after a while. On a small...
Forum: General Discussion (sailing related) 05-27-2014
Replies: 19
Views: 1,023
Posted By Stumble
Re: Off-shore delivery contracts

The are real advantages of a notarized document. It depends greatly on where you are, but generally a notarized document is self proving. Ie the notarization is proof that the person who signed the...
Forum: Gear & Maintenance 05-25-2014
Replies: 1
Views: 402
Posted By Stumble
re: zephyrwerks.com

I have always had good experiences with them. They are obviously more expensive than off the shelf, but they do a good job.
Forum: Sailboat Design and Construction 05-21-2014
Replies: 31
Views: 1,310
Posted By Stumble
Re: old/new - displacement/planning

They do. They actually flip them over in a marina with a crane and test them that way. With the keels canting to 40 degrees it isn't that hard to flip these things back over. For most of the boats...
Forum: Gear & Maintenance 05-06-2014
Replies: 12
Views: 644
Posted By Stumble
Re: Outhaul repair/replacement

Replacing the wire with dyneema is a pretty simple conversion, and absolutely worth doing.
Forum: Gear & Maintenance 05-06-2014
Replies: 12
Views: 644
Posted By Stumble
Re: Outhaul repair/replacement

That is one seriously old school system. For what it's worth I would go to an internal cascade system with a clew strap. But there are a number of places to get those sheaves. Zephyrwerks - The...
Forum: Gear & Maintenance 05-01-2014
Replies: 17
Views: 1,001
Posted By Stumble
Re: what type of fitting do I want at my outhaul car

A 1/8 or 3/16 amsteel line with an eye splice is what you need to replace the wire. You could splice it in place pretty easily or get a d shackle to attach it.
Forum: Gear & Maintenance 04-25-2014
Replies: 11
Views: 2,339
Posted By Stumble
Re: Precision Sails or North Direct.....

I have no experience with precision. But with North Direct you can also deal with any of their lofts world wide for support.
Showing results 1 to 25 of 48

 

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