Drop keel block and tackle modification.

Discuss the Jerry Montgomery designed pocket cruiser SAGE 15 (sloop) and SageCat (catboat version of the Sage 15)

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noel
Posts: 89
Joined: Sun Jun 01, 2014 12:27 pm

Drop keel block and tackle modification.

#1 Post by noel » Tue Aug 17, 2021 9:21 am

Not sure if anyone has done it or if of any benefit. Instead of running the line from the daggerboard to the fixed fitting on the cabin top add a turning block. Wondering if any reduction in friction would be gained reducing the stress on the line as makes this ~90 degree bend and reduce forces on the block and tackle system. Not sure if one would notice any less force needed to crank up the keel.

noel
Posts: 89
Joined: Sun Jun 01, 2014 12:27 pm

Re: Drop keel block and tackle modification.

#2 Post by noel » Tue Aug 17, 2021 9:35 am

One issue I've had is the becket on one of the Harken 29mm Carbo Air block blew apart. Quick fix with a Harken 29mm Carbo turning block turned out to be a permanent and better than original. After reeving the line through the emergency repair I noticed less force required to crank up the keel. Maybe the line was improperly reeved through the blocks? Or the alignment of the line relative to the blocks are better with the now offset (no centered becket on one block)? Heard a creak/crack a few sails ago when lifting the keel the last couple inches. Same sound that occurred prior to the becket failure. Now just letting the bulb hand a couple inches lower and dipping the trailer couple inches deeper into the water. Spare triple block and turning block sitting in the repair kit. Just incase of failure before replacement. Hoping a turning block at the cabin top fixture will reduce load enough to prevent future becket failure.

Stress and strain of 115 launches and almost 3000nm under sail is catching up with Vela.

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