Jump to content
Sign in to follow this  
beeky

Nacra 16sq Mast Rake

Recommended Posts

Can someone tell me how much mast rake i should have on my 16sq Nacra. If i place a straight edge over the cross beams and have them level,then check the mast rake, it works out that it is 165mm forward at the top.

Share this post


Link to post
Share on other sites

When we measure our rake we use our trap wire.

you will need a short (approx 1-1.5m) length of cord.

unclip the Trap from the tramp and pull towards the front chain plate.

put the cord through the hook eye and extend the length of the wire so that you can measure the length to the chain plate pin (the bottom one that attaches to the hull)

Then take the wire to the back of the boat. see where it ends up at the back. We sail with it anywhere between the back of the back beam and the rear hatch.

We adjust it depending on wind strength and personal preference. (the stroger the wind the further back)

I hope that makes sense.

Mark

Share this post


Link to post
Share on other sites

The way that Mark has discribed it is how most people measure the mast rake on Nacra's

We checked a few of the boats on the Saturday during the QLD State Tiltes, most of the setups were just behind the back beam, a couple were between the back beam and the deck hatch (this is where I run mine) and 2 were just infront of the back beam.

The 16sq tuning guide that is on Gosses site is a very good starting point for most boats, it was mostly written by Scotty a few years ago and suits heavier crew weights best, there a few tips within it for the lighter crew weights.

Share this post


Link to post
Share on other sites

Thanks Men for your help.

Great information.

Sailed on Saturday but conditions were so light couldn't really test. I am still 30cm forward of my back beam with quit a bit of weather helm. Will play around with the info i received thanks again

Share this post


Link to post
Share on other sites

Beeky

If you are raked that far forward and have weather helm then I would look at your rudder rake (kick under).

Or check to see if your rudders are moving back under load due to stretchy rope etc.

On the beach make sure the rudders are kicked under the boat 20-30 mm and if you push back they dont move.

Share this post


Link to post
Share on other sites

Hey Goose

That's great. I have checked it out and remember when i repaired the rudders. they did go under and i changed it :-(

I will fix that thanks

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  

×