CS 36 Merlin mast rake - SailNet Community
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post #1 of 6 Old 10-03-2014 Thread Starter
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CS 36 Merlin mast rake

Looking for proper mast rake for our 1989 CS 36 Merlin hull #71
as have contradicting information and very little actual resource material
to go with. Backstay is non adjustable ie turnbuckle only Any thoughts or help appreciated

Thanks sailordave for correcting me with the hull # description field, but still looking for other Merlin owners to provide a bit of info on their mast rake, not mast bend.

Last edited by Langlo06; 10-07-2014 at 11:57 AM.
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post #2 of 6 Old 10-03-2014
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Re: CS 36 Merlin mast rake

We have some CS Merlin owners/past owners here, they should be along shortly ....

Generically, however, the amount of weather helm you routinely experience is a good indicator if your rake is too much or too little. If the helm loads up heavily going to weather in a breeze you may need less rake, but if lee helm or neutral helm is more common you'd need more.

If the boat 'feels OK' under sail close hauled then it's probably more a matter of trim and/or bend.

In addition, the condition/shape of the your sails will also contribute..

Ron

1984 Fast/Nicholson 345 "FastForward"

".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)

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Re: CS 36 Merlin mast rake

Not sure I'm the best source, but here goes. My mast is pretty much set up vertical. That said, I do have a NAVTEC hydraulic backstay tensioner and this week the sailmaker and I were playing w/ it. I can put about 3 inches of bend in the mast at max setting.
Now that is bend, not rake. You're probably best w/ getting your local rigger and sailmaker to take a look. Some boats are very sensitive to rake when it comes to getting the best performance while others are less so.
My .02 is that the MERLIN probably is designed to be sailed w/a vertical mast and tweaked w/ small amounts of bend. And w/ an ISOMAT mast section that is going to be limited because of the extrusion on the front of the mast for the spinnaker car.

Hope this helps.

PS. Just remember, you can use the babystay to induce a little bend also.

PPS. Are you sure you're hull # 271? It's probably 71. You can get the hull number from the HIN. After ZCUS, the next four numbers are the hull number. Disregard the leading "62".

CS 36M DIANTHUS

Last edited by sailordave; 10-03-2014 at 10:33 AM.
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Re: CS 36 Merlin mast rake

Mine's pretty straight... I'll check tomorrow...I also have an adjustable backstay, although it's mechanical, not hydraulic.

It's a pretty stiff spar.. I'm surprised about the 3", SailorDave.. I will check that too.

Was that fast enough, Ron?
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David

1987 CS 36 Merlin "Kyrie"

"They drove a dump truck full of money up to my house. I'm not made of stone!" -Krusty the Clown
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post #5 of 6 Old 10-05-2014
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Re: CS 36 Merlin mast rake

I lied.. I didn't check the mast yesterday. We got distracted.. I will check it next time I am at the boat.. Hopefully next week.

David

1987 CS 36 Merlin "Kyrie"

"They drove a dump truck full of money up to my house. I'm not made of stone!" -Krusty the Clown
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Re: CS 36 Merlin mast rake

David, you probably have more flex than you think, being as you have a mini forestay on your boat like I do. That was used to keep lighter built spars from pumping.

With this in mind, it would not be hard for the OP to install an adjustable back stay. Very usefull in higher winds etc. I also keep the mast pretty upright when not being sailed.

My comments come from owning a Tony Castro design boat, not a CS.

Marty

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I drives me dinghy!
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