SJ23 Tech Tip A07, (2020-01-23) Bob Schimmel | |
Support the Mast - For Road Travel or Winter Storage. |
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It's
been said many times that the majority of damage done to a boat is while it's on a
trailer. The hull experiences a considerable amount of stress with every
bump, dip and turn of the road. This includes the mast as well. Whether you
tow
the boat or store it for the
winter, a well supported hull and secured mast is essential. Below are
examples of good mast support with secure tie down lines.
BOW
SUPPORT - The mast crutch on the pulpit should be placed just
AFT of
the pulpit forward posts, NOT ahead of them on the
unsupported lip. Resting just aft of the compression
posts provides the greatest strength and stability. Many
times I've seen a mast supported by the lip (forward of the pulpit posts) and
wondered why the owner can't figure out why the pulpit is suffering from
"droopy lip syndrome." The unsupported lip
is not designed to handle the shock pounding of carrying a mast while driving
down the highway. Eventually the lip will droop, which looks pathetic.
Place the (2x4)" support across the pulpit just aft of
the forward posts and tie it to the pulpit with a square lashing.
Then tie the mast around the wood support with a square lashing to prevent movement.
If you don't know how to tie a square lashing, ask a Boy Scout!
MID
MAST SUPPORT - If the poor bow support described above isn't bad enough, the same people
also
tend NOT to support the middle of the mast. Drive alongside a sailboat on the highway sometime
and watch the middle of an unsupported mast flex. It's amazing
that more masts don't snap under these forces and that the pulpit can take
this much abuse. The compression post shown
at left, along with the lateral tie down lines, support the mast very well. Either
support is within the capability of the "weekend expert"
to fabricate. Coat the wood with your favourite stuff to
keep the water out.
TRANSOM SUPPORT - Fabricate a steel mast support post such as the one shown at the right to support the mast at the transom. This post is fairly easy to make from 1" square steel tubing, provided you can weld or find a welder. The beauty of this post is that you can still climb onboard over the transom, something I find very useful during winter storage.
When the post is set on the gudgeons it will flop to one side making it impossible to place the mast in the yoke. Therefore, the top of the post must be tied across the transom to the toe rails, cleats or pushpit so the yoke it aligned to the mast. Examine the photo at right closely.
When you lay the mast in the yoke remember to remove any shrouds or halyards from inside the yoke. This ensures you don't damage the anodized finish on the mast or the rigging. There is only one
short coming with this metal support post; I can't
place the rudder in the gudgeons to steer the 20KMs down the lake with the
mast down. Steering with the outboard's is pretty
well an exercise guaranteed to kink your neck and tick off the crew as you
zig zag down the lake. I find it next to impossible to steer a straight line. I question if it is even safe to power a short distance in a marina, considering how poor your forward view will be while reaching down to the outboard tiller. In both cases it is better to have a wood A-frame mast support
that straddles the tiller so you can still steer with the rudder.
WOOD SUPPORT FRAMES - If you can't find a welder to make a metal support post you can fabricate a very secure post from dimensional lumber. Make an A-frame and rest it on the cockpit sole, 1' forward of the drain holes. This is directly above the bulkhead located under the cockpit. In this location the A-frame can't block water flowing to the drain holes. It is all too easy to think you don't need them in winter but the reality is otherwise. Some people solve this problem by resting the A-frame across the seats or raising it on feet so water can flow under it.
One could argue that a wood support frame standing in the cockpit is easier on the hull than the metal transom support post resting on the gudgeons. In practice I always keep Panache's support lines tight while towing and during winter storage to prevent movement. The gudgeons have never flexed or leaked. The metal post is smaller and lighter to store and I can, with a bit of contortion, crawl around it to get into the cockpit when the storage tarp is on. The system shown above is yet another home made version to support the mast. It works because of the split pushpit. I notice that this owner has added many features from various Tech Tips. Sweet. The stand at right, while not on an SJ23, is perfect if you want to steer with the tiller. It also has forward and aft support for rolling the mast.
At left and below is Bill Ward's design for supporting the mast at the transom. He hooked the strap to the toe rail and wrapped it over the mast to keep the mast centered over the cockpit.
SPREADERS, SHROUDS & HALYARDS - I detach Panache's spreaders for winter storage since they would protrude into the tarp. It is easy to remove the two screws (screw them back in the holes they came from for storage) and lay the spreaders on the deck (just aft of the mast step) lashed to each other so they don't move. The shrouds are pulled forward to remove any slack and lay on the cabin top where they don't move. For a long road trip I lash them to the hand rails to prevent movement. The backstay is coiled and tied to the mast hanging over the cockpit. The forestay and halyards are pulled tight along the top of the mast and tied every 2' with shorts lines dedicated to this purpose. None of this rigging moves with the wind at highway speed. HINT: Make a haul out storage bag to store all your tie down lines, including the three mast supports. I keep it tucked in the bow, handy for haul out. Include a small plastic bottle to hold important screws and pins. This way you have only one place to look for your haul out stuff. Happy
hauling! TOP |
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