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125 Discussion Forum
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Return to the Forum List  halyard tubes | what is the best way to build halyard tubes in to a foam boat that is already built ?
also is it i good idea to ?
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| | Re: halyard tubes | We started putting halyard tubes into 125's in the early 1980's as it was much tidier and cheaper than a stack of pulleys.
With the trend to have the mast as far back as the rules permit, it is suitable for halyards to go straight to blocks on the top of the centrecase front piece and then aft. The exception may be the spinnaker halyard as this is best going to the keel near the back of the centrecase to enable floor to shoulder height vertical pull.
This can still be achieved with a though the case top block and then to a cheek block low down on the aft end side of the case.
Tubes are best from Aluminium tube with a reasonably large bend radius. If you do not have access to a tube bender heat over a flame (mum's gas stove) and bend around a baked beans tin. Aluminium is a good thermal conductor so use gloves or a non-synthetic rag. Be careful not to collapse the tube.
Drill an 1+mm oversize hole through the deck and main bulkhead where the tube is to pass through. Make 4 washers of plywood (2 under the deck and 2 inside the bulkhead). Make a timber packer to fit over the bend and attach to the mast understep at 45 degrees to vertical. This also needs a 1+mm oversize hole so that the epoxy glue used to bond it together will not be wiped off as the parts are slid into place. Roughen the Al tube where glue will adhere with coarse sandpaper.
Access is through the inspection port that this bulkhead should already have installed. Assemble the timber packer with glue on the tube and the face to contact the mast understep (may have to coarse paper rub the contact point on the understep), put the innermost washers on and glue the outer face. Add the second washers and similarly glue the face and tube.
Put it through the bulkhead hatch (easiest with the hull on its side) and have the tube poke through the deck and bulkhead a small amount. Slide the washers into position, pushing the glue through the clearance hole gaps. Jiggle the central timber into contact with the mast understep.
Clean off excess glue and leave to dry.
Trim the tube projection off with a hacksaw blade or counter sink drill. Be careful not to create heat to destroy the glue bond. Slide the halyard (rope only) through and go sailing.
The timber packer to the mast understep is important as it strengthens the assembly considerably.
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| | | Re: halyard tubes | Hi Alex,
I was considering the same for my boat but decided against it as sailing without them isnt a problem as it is and it would be extra weight that boats like yours and mine dont really need
cheers,
Ryan
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