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PostPosted: Tue Apr 07, 2020 11:21 am 
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Joined: Wed May 18, 2016 11:44 am
Posts: 49
Location: Traverse City, MI.
how does the exit block attach in the mast track? is there a base plate behind the track? how do you get it in there? Im piecing together parts for a 5:1 downhaul similar to Murrays but I don't understand how to secure the exit block. thanks
Image

also, since the old stock downhaul cleat will not be used anymore, can that cleat be used to cleat the main halyard instead of hooking the ring? this would be easier to drop the sail when soloing compared to pulling halyard and turning mast, its always a fight for me to hook and unhook the main lol


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PostPosted: Tue Apr 07, 2020 12:38 pm 
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Location: Traverse City, MI.
been reading and I understand that its not a good idea to keep constant tension on the halyard by cleating it. I will try cleaning the luft track and bolt rope and sailkote them.


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PostPosted: Tue Apr 07, 2020 1:26 pm 
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Joined: Tue May 27, 2003 12:44 pm
Posts: 15048
Location: Oceanside, California
mmiller wrote:
Raising the mainsail of a Hobie can be more difficult than need be.

Several factors can cause the mainsail to be difficult to hoist:


Dirty luff ropes and luff tracks. These can be cleaned with soapy water and a scrub brush. If you want to use a lubricant, keep away from oils and waxes that can attract dirt. Use a dry silicone spray. Most all Hobie sails now have a Teflon threaded bolt (luff) rope to ease the hoisting effort.

Battens and sail shape. The battens stiffen the airfoil shape of your sail. Over tensioning of the battens can cause a couple of problems. Luff protector caps can be forced against the mast and cause drag when hoisting. The battens also force the sail shape into a curve. The luff curve (seen when laying the sail out on the ground, as a large arch) is typical to Hobie Cat main sails. The sails "airfoil" shape is mostly created by the miss-matched mast bend and luff curve of the sail. The luff curve is more than the likely mast bend and when the mast is straight (while hoisting) the difference is dramatic. This luff curve going up the straight mast can cause significant drag and hoisting problems when done incorrectly.

Outhaul. Be sure the outhaul is fully released before hoisting.

Hoist Technique:

Keep the batten tension to a minimum. Hoist the sail slowly, while feeding into the mast opening. When the sail gets about 3/4's of the way up, begin aggressively feeding at the bottom opening and reduce the amount of halyard effort. If the halyard is pulled tight when the sail is not being fed into and up the track, you will have problems. The sail luff will pull taunt and the curve shape will bind in the (straight) mast track. Lower the sail slightly and begin feeding again.

The best way to feed the sail is to stand in front of the mast and reach around either side to "sandwich" the sail between two hands (above the feeder opening) and push the sail up the track. Pull with the halyard, only the slack created, then feed again. If the sail binds, lower slightly and begin feeding again. This technique can be done by one person, but is certainly easier with two working together. It is VERY important that the person on the halyard only pulls the slack up the mast and does not get ahead of the feeder.


Locking the Hobie 17/18/20/21 Halyard:

It is best to simulate the halyard locking with the mast down so you clearly understand the system.

Then, depending on how old the boat is, be sure the hook does not have the old "flopper" stainless piece hanging on the hook. This old device caused difficulty in raising and hooking but would make it easier to release and lower.

Also, be sure that the knot tied to the ring is very low profile. A long bowline knot will hit the mast head before the ring gets to the hook.

If the ring has a small loop at the top... The line should be passed through the loop and a small knot tied. The knot (when ring and shackle are affixed to the sail) should be facing the mast. This tilts the ring closer to the mast.

Image

Then (before attaching halyard shackle to the sail) spin the halyard 3 or 4 times clockwise (looking down on the shackle). This "pre-loads" the halyard line and causes the ring to swing back towards the hook. Keep the boat into the wind and hoist. Should lock easily.

To release... fully release the downhaul and outhaul. Partially feed the sail up the luff track. Hoist with the halyard to the top till it stops, hold... rotate the aft of the mast base to starboard, hold the mast rotated, ease the halyard a few feet before releasing the mast. Lower the sail.

_________________
Matt Miller
Former - Director of Parts and Accessory Sales
Warranty and Technical Support
Hobie Cat USA
(Retired 11/7/2022)


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PostPosted: Tue Apr 07, 2020 1:46 pm 
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Joined: Mon May 09, 2005 10:25 am
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Location: Jersey Shore
Use “square nuts” to secure the cleat to the track (instead of the more common hex nuts). The square shaped nut will resist turning inside the groove so you can turn the screw without the nut also spinning. Pre-assemble the screws and nuts onto the hardware and then slide each nut up into the bottom of the track one at a time. Use loctite thread locker on the screw threads to prevent them from loosening.

Do not use a cleat to secure the halyard. Follow Matt’s and the other various recommendations for using the halyard hook system. Most important - have the bows directly into the wind, use a halyard ring with a separate loop for tying off the halyard, and know which way to turn the mast to engage and disengage the hook.

sm


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PostPosted: Tue Apr 07, 2020 5:13 pm 
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Joined: Wed May 18, 2016 11:44 am
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Location: Traverse City, MI.
Ah thank you! You can feed the block in the track from the bottom of the mast? This is what I’ve been trying to figure out, I didn’t understand cause it can’t go in from the sail feed opening, the gooseneck yoke is in the way.
I will be cleaning my track and bolt rope and spraying it with sailkote, and practicing raising, hooking and releasing it on my own. Will not be clearing the halyard.

I also just realized that you use the main halyard to pull a job snorkel up? Been curious about that too. Looking forward to getting the boat out!

Thanks


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PostPosted: Thu Apr 09, 2020 10:35 am 
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Joined: Wed May 18, 2016 11:44 am
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Location: Traverse City, MI.
if your running a 5:1 downhaul like the Murrays, what length of 5mm line do I need?


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PostPosted: Thu Apr 09, 2020 1:36 pm 
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Location: Jersey Shore
black4est wrote:
Ah thank you! You can feed the block in the track from the bottom of the mast?

I also just realized that you use the main halyard to pull a job snorkel up?


Yes, feed up from the bottom. You may need to remove the lower halyard sheave. Install the screws and nuts loosely onto the fitting and then insert them one at a time into the track. You may need to pull out slightly on the screw while tightening to keep the nut from spinning (needle nose pliers can help).

Yes, main halyard is used to hoist the snorkel.

sm


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