Attachment points for boom brake...

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sj01

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May 18, 2011
21
Hunter Vision 36 Tarpon Springs, Florida
I just got my Wichard Gyb' Easy today. Been looking at the instructions and installation and think I might have a problem. The brake hangs below the boom in front of the vang, the line is supposed to run through it to blocks which should be attached at the base of the chain plates on either side (slightly forward of the brakes attachment point on the boom) and from there run back to the cockpit to the winches. So, my problem is I have a Vision 36 and no chain plates or rigging to attach to. The only things I have available are the base of a stancion post which doesn't seem like a good idea, or a deck cleat from which to tie a makeshit attachment for the needed blocks. Does this seem like a wise choice or do I have an accessorie that cannot be used on my particular boat?

Vision-36-Starboard-Sidedeck.jpg

Thank y'all
 
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Steve Dion

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Dec 2, 1999
15,184
Hunter Vision-36 Rio Vista, CA.
No metal toe rail or any other attachment point is a problem on these boats.

I have considered getting one for my HV'36 and the ONLY practical solution that I have come up with is to drill larger holes in the side deck. Fill those holes with epoxy and then re-drill with the proper sized bolts. You should have an adequate backing plate for the mount that you decide to use.

Depending on exactly where the attachment points turn out to be, there may be some aluminum glassed into the deck. If this is the case, you would just need to drill and tap the proper sized holes.

I was thinking about using a folding pad eye for the attachment point.
 
Rich Stidger

Rich Stidger

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Feb 10, 2004
4,150
Hunter 40.5 Warwick, RI
I have a Dutchman Boom Brake in one of my lockers for the last 13 years because I have not figured out exactly how to mount it. Maybe one day soon I will get my act together. Don't anyone hold your breath.....

It sound like your boom brake is supposed to mount similar to my Dutchman. Since you have no chainplates. my suggestion would be to mount a deck pad with a strong and massive backing plate. Follow the mounting instructions as to position and be sure that the control lines to the brake don't rub or chafe on anything when the boom is in any position.

Maybe someone who has mounted a Dutchman to chainplates can enlighten me on the technique for attaching without compromising the chainplates or shrouds.
 
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sj01

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May 18, 2011
21
Hunter Vision 36 Tarpon Springs, Florida
Shouldn't the deck cleats which are mounted mid-ship be sufficiently reinforced enough to be used? The attached picture in the OP shows the cleat (with a blue line tied to it).
 
stephen Penny

stephen Penny

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Nov 8, 2009
537
Hunter 386LE San Fancisco
sj01,


Save some money on blocks and install fairleads since all all you need to do is to is tension the boom brake line. I tie-off the fairleads to an inboard side stay. I route the line to mast to a fairlead then to the cockpit through a clutch where I can take to a winch to tension it.
 

Attachments

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Rick486

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Oct 1, 2007
1,865
Boston Whaler Super Sport Pt. Judith
I have a dutchman on my 44. I use the midship cleats on both port and stbd, which seem plenty beefy for this load. On one side I have a single block turning the dutchman lead back to a single fiddle block attached to the spinnaker block fitting on the arch, then to the sheet winch. All works ok but it seems the dutchman is difficult to tune exactly for the wind conditions off the wind in particular. Either too much friction or not enough. Not to turn this into a dutchman teach-in, but does anyone with a dutchman have any tips to pass along?
 
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Steve Dion

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Dec 2, 1999
15,184
Hunter Vision-36 Rio Vista, CA.
The midship cleats on the HV'36 are not factory installed. Just check them out and be sure that they have substantial backing as Rich mentioned.
 
Rich Stidger

Rich Stidger

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Feb 10, 2004
4,150
Hunter 40.5 Warwick, RI
One of the criteria for the attachment points for the Dutchman is that the control line must be the same length for all positions of the boom. The way to accomplish this requirement is to locate the port and starboard attachment points on a circle that is described by the brake position on the boom. That is to say if you were to mark an arc on the deck where the brake would be positioned as the boom swings side to side, the attachment points would lie on that arc.

I would expect that other brakes would have the same requirement, but you would need to research this fact.

The reason for this requirement is so that when the boom moves it does not change the tension on the control line. If the boom position affected the control line tension then the brake would not have constant braking effect as the boom tries to move.

Having stated this, I wonder if the mid-ship cleats are the "ideal" location for the attachment points. If anyone using mid-ship cleats is having problems with the adjustment of the brake, this could be a prime cause.

Using the chainplates as a tie point and locating the brake at the point on the boom where the chainplate would be directly underneath it, you would have the attachment points on the arc.

My problem (and primary reason why I haven't installed my brake) is HOW to attach a tie point to the chainplates.
 
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Rick486

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Oct 1, 2007
1,865
Boston Whaler Super Sport Pt. Judith
Rich Stidger said:
One of the criteria for the attachment points for the Dutchman is that the control line must be the same length for all positions of the boom. The way to accomplish this requirement is to locate the port and starboard attachment points on a circle that is described by the brake position on the boom. That is to say if you were to mark an arc on the deck where the brake would be positioned as the boom swings side to side, the attachment points would lie on that arc.

I would expect that other brakes would have the same requirement, but you would need to research this fact.
Click to expand
Rich Stidger said:


The reason for this requirement is so that when the boom moves it does not change the tension on the control line. If the boom position affected the control line tension then the brake would not have constant braking effect as the boom tries to move.

Having stated this, I wonder if the mid-ship cleats are the "ideal" location for the attachment points. If anyone using mid-ship cleats is having problems with the adjustment of the brake, this could be a prime cause.

Using the chainplates as a tie point and locating the brake at the point on the boom where the chainplate would be directly underneath it, you would have the attachment points on the arc.

My problem (and primary reason why I haven't installed my brake) is HOW to attach a tie point to the chainplates.
Click to expand


Rich: On the 44 there are two cleats port and stbd. I chose the one which supports the circularity requirement. So the thing works ok going to windward so that the boom crosses over smoothly on tacks. But off the wind there is so much friction in the mainsheet and dutchman combined that most time I have to run up on deck to fiddle with the adjusting knob on the dutchman and push the boom out manually, which as you know is not very far to begin with due to the swept back spreaders.
 
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