Handy Personal Link Thread

[rwatson]

An interesting link here on setting up a prop on a boat.

"The Secrets of Boat Setup"

http://www.kencook.net/Setupart.html

[rwatson]

Calculating rig and mast sizes

Rig and Mast dimensioning online

[rwatson]

Good advice at

Priming and painting Epoxy

[rwatson]

Lots of technical resources at

Composite design calculations

[rwatson]

at

http://www.boatdesign.net/forums/fib...ers-44315.html

[rwatson]

Pars handy Scarfing Jig with a powersaw

Scarf Joint

[rwatson]

Some good advice on how to lay FG overhead with the least amount of pain

including -

Wear multiple layers of gloves, so you can pull the top ones off when they get too gooey, and not have to wrestle new ones onto your sweaty/sticky fingers.

PS I keep a canister of talcum powder handy for fast and easy glove-ups.

You cant have too baggy a glove, as sometimes its easier to use your fingers tips to manipulate goo.

Overhead Epoxy Work

[michael pierzga]

Late night Peel Ply reading


The Effect of Peel-Ply Surface Preparation Variables on Bond Quality

Federal Aviation Administration

http://www.tc.faa.gov/its/worldpac/techrpt/ar06-28.pdf

[rwatson]

Originally Posted by michael pierzga

Late night Peel Ply reading


The Effect of Peel-Ply Surface Preparation Variables on Bond Quality

Federal Aviation Administration

http://www.tc.faa.gov/its/worldpac/techrpt/ar06-28.pdf

I liked that one Mike.

I thought this thread on health protection should be a priority too

Epoxy allergies - options?

[rwatson]

center of buoyancy,
or CB) and the center of all weight (vertical center of gravity, or VCG).

a maximum righting moment = (GZ)

GM is the measurement (distance )
between the VCG and the Metacenter
(M—the point at which a vertical line
taken from the heeled CB crosses the
vessel’s centreline)

Having said that, for a mono-hull yacht that is expected to do extended coastal cruising,
open ocean cruising, or any vessel that is expected to be caught out in really bad weather you
should look for the following;
•
a minimum range of stability to 90° of heel and over 120° preferred
•
a maximum righting moment (GZ) that occurs after 30° and preferably after 50°
•
and a GM of at least 2 feet and preferably between 3 feet and 5 feet
GM is the most valuable number to consider, as it tells you the initial sta-
bility; the stability that you will notice day to day. GM is actually the measurement between the VCG and the Metacenter (M—the point at which a vertical line taken from the heeled CB crosses the vessel’s centreline) as shown in this diagram.

Low GM means the boat may be a bit tender to walk around on and heel a
few degrees under wind pressure. How-ever, there may be a good overall range of stability, which you can check by looking at the Critical Angle or Ultimate Stability.
If it has a higher GM then more than likely there will be sufficient initial stability, and possibly too much, however Ultimate Stability may be low. The boat will have a quick jerky motion in a seaway but be very stable at the dock.



http://www.trekkeryachts.com/pdf/StabilityBray.pdf

[rwatson]

Keel abrasive protection, HDPE

I like the manufactured epoxy strips with hardeners added.

[kach22i]

Originally Posted by rwatson

http://www.boatdesign.net/forums/pro...tml#post546318

The PDF link in that thread is broken, can anyone re-post it?

http://www.diabgroup.com/europe/lite...re_bedding.pdf