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Last Updated
June 06, 2008

 

 


   

Projects

Cabin Top Mainsheet Traveler

To address the angle of the mainsheet across the cockpit of the A28 (8.5), or to provide clearance for a "bimini" canopy, several owners have fitted an alternative mainsheet traveler mounted on the cabin roof. 

Tom Schraeder has provided this detailed report of the installation on his A28 #023 "Ondine" (previously "Sonset").
  

Travmainsheet.jpg (49860 bytes)

Trav Stbd.JPG (71009 bytes)

Trav Port.JPG (56919 bytes)

Backing Plate.JPG (19391 bytes)

Click on images to enlarge


The traveler used is available from Garhauer - see more information on the Mainsheet Traveler section of the Garhauer website

They sell a kit developed for Catalina 36's, but which fits the A28 very nicely.  Garhauer will send you instructions for measuring. They want the total distance between the riser legs, and the amount of rise needed. When measurements were sent in, Garhauer shipped a 48" traveler and car, port and starboard blocks with cleats (part MT-2), heavy duty port and starboard risers, and backing plates for the risers (UR-1 or UR-2.) The hardware is VERY sturdy and the weight is a bit high, which may not appeal to racers.  Garhauer were very supportive through the process.  They mistakenly sent a pair of risers too short and then shipped the correct items express when notified of the problem.

Locating the traveler is pretty simple.  You'll want it just barely forward of the main cabin hatch since if it is mounted too far forward, the added stress on the unsupported aft portion of the boom would be unnecessarily increased.  Fitting the traveler with an existing dodger could present a challenge unless the dodger comes down to the cabin top right at the forward edge of the hatch.  If you look closely at the photos, you can pretty well see how tight the relationship would be.

Installation is also very simple, provided your existing cabin-top winches. rope locks and other hardware leave a clear path for the traveler.  With the parts in hand, it is pretty easy to check for clearances.  You may note in the photos my rope locks.  They were repositioned and the handles clear the traveler with very little clearance, but are quite operable. 

Once you've decided on placement, you'll want to mark the riser base-plate positions, remove them from the risers (very simple single pin,) and then use the bases as templates for drilling six holes on each side.  The backing plates are the same quality polished stainless as the risers, and are far enough off center not to be a hazard to taller cabin occupants. 

12 bolts, standard through cabin-top sealing, and the traveler is in place.  The mainsheet rigging to the boom needs more advantage than a boom end sheet.  I chose to use three bails each with a single block on the boom to get a good advantage and to distribute the load over a wider area.  For the time being, I've kept the mainsheet run direct from the traveler into the cockpit.  The block on the traveler  is a triple with a becket and a cam cleat.  Mount the cleat with jaws down for ease in releasing.  While this leaves it in a good position for control, it may get fouled in the hatch if its left open.  Pulling the boom to port or starboard while at the dock clears the hatch completely for easy access.

I've been very happy with this arrangement for the past two seasons.  I sail alone mostly and find the mainsheet easy to reach in a hurry without leaving the tiller.  I highly recommend the layout.  The cabin-top traveler allows better vertical control of the boom at wider angles than the original transom mounted traveler.  Ondine came with a bridge deck traveler which really cut down on cockpit space.  I'd do it again in a heartbeat.
    

Last updated  13 January, 2006 - © Aloha Owners Association