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06-22-2020, 03:23 PM
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#1
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Veteran Member
City: Vancouver
Vessel Name: Hyalina
Vessel Model: Mainship Pilot 34
Join Date: Jun 2020
Posts: 26
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Weaver Davit winch or crank question
Hello Forum people,
I am utilizing a Weaver Davit system to hold my West Marine inflatable on my swim step.
The PO had a simple block and tackle made up to bring the dinghy vertical and attach to the boat.
He did the attachment point at the oar lock. The oak lock is starting to tear under the load.
Has anybody had any experience with the Weaver crank system they sell?
Does anybody have a user build system they like in conjunction with the Weaver to haul dinghy out of water?
Thanks
Ewan.
Thanks
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06-22-2020, 05:39 PM
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#2
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Guru
City: Gig Harbor
Vessel Name: Kinship
Vessel Model: North Pacific 43
Join Date: May 2015
Posts: 9,046
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Quote:
Originally Posted by ewandeane
Hello Forum people,
I am utilizing a Weaver Davit system to hold my West Marine inflatable on my swim step.
The PO had a simple block and tackle made up to bring the dinghy vertical and attach to the boat.
He did the attachment point at the oar lock. The oak lock is starting to tear under the load.
Has anybody had any experience with the Weaver crank system they sell?
Does anybody have a user build system they like in conjunction with the Weaver to haul dinghy out of water?
Thanks
Ewan.
Thanks
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I have a SeaWise davit system on my boat. Similar to the Weaver. I have the pedestal mounted hand crank which works great. it was designed to attach to a hard point bolted to the outboard edge of the transome. It has always worked well. I also have my fiberglass rowing dinghy setup the same way with an eye attached to the rear seat.
I think a block and tackle would work great, but for the inflatable I would look at installing a strong eye bolt through the dinghy transom or you will have problems with the inflatable.
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06-22-2020, 05:45 PM
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#3
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Veteran Member
City: Vancouver
Vessel Name: Hyalina
Vessel Model: Mainship Pilot 34
Join Date: Jun 2020
Posts: 26
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Dave,
Thanks for the reply.
The SeaWise system at the time was a fair bit more expensive, hence the built in hand crank. Weaver systems have incorporated that into new models.
Mine doesn't have the built in convenience.
Ewan
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06-22-2020, 06:45 PM
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#4
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Senior Member
City: Victoria, BC
Vessel Name: Timeless
Vessel Model: CHB 34
Join Date: Aug 2009
Posts: 262
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We use a Weaver Davit system to carry a West Marine RIB on our swim grid. It is hoisted by a block and tackle rigged to the mast of our boat. Once in the raised position the dinghy is held in place by 2 Weaver standoffs and a Weaver Lever which carries our 9.9 Mercury outboard in the vertical position. The lift point is a pad with a ring attached mounted on the dinghy closer to the stern than the bow. In the 9 years we have used this system we have had to have the pad reglued once otherwise it has worked well for us.
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06-22-2020, 06:48 PM
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#5
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Valued Technical Contributor
City: Litchfield, Ct
Join Date: Aug 2012
Posts: 6,775
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I would upgrade the attachment point and continue to use the block and tackle. Simple and easy. Attached is a pic of our boat with a block and tackle that pulled the dinghy up to vertical.
You can see the tackle running diagonally in front of the dingy up to the cabin top.
David
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06-22-2020, 07:27 PM
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#6
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Guru
City: Bellingham WA
Vessel Name: Hatt Trick
Vessel Model: 45' Hatteras Convertible
Join Date: Nov 2016
Posts: 1,971
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I use a Lewmar 2-speed sailboat winch mounted on the top of the gunwale with a block and tackle, both ends with double-sheave blocks to increase mechanical advantage. Both ends are heavily backplated to cope with the weight of a Livingston-like hard dinghy and 9.9 Yamaha. Weaver snap davits are on the swim step. I like the simplicity of this setup compared to a crank system and it takes up no room on the swim step, which a crank system does.
__________________
Ken on Hatt Trick
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06-22-2020, 08:03 PM
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#7
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Guru
City: Gig Harbor
Vessel Name: Sandpiper
Vessel Model: Bluewater 40 Pilothouse Trawler
Join Date: Nov 2012
Posts: 2,315
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When we had a 34 Mainship, we carried a 9' Livingston on the swim step with Weaver Davits.
We used a boom bang 4 to 1 with a cam cleat to raise and lower the tender. It was attached to the roof of the cockpit. The block and tackle is a lot faster to drop the dinghy and with a 4 to 1 ratio, effortless to raise the dinghy.
Cranks and foot pedals take a lot more effort and time to raise and lower a tender.
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06-22-2020, 08:14 PM
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#8
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Guru
City: Gibsons, B.C., Canada
Vessel Name: Island Pride
Vessel Model: Palmer 32'
Join Date: Oct 2007
Posts: 4,409
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Move the block and tackle rig to pull the dinghy up at the transom. That is usually the strongest part of any dinghy. Block and tackles work well, are relatively inexpensive especially if you can locate used blocks.
A good pad eye should complete the attachment.
For mine I also use Snap shackles. My local marina had a line of inexpensive SS shackles that didn't break the piggy bank. Use should also be OK.
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06-22-2020, 09:50 PM
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#9
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Moderator Emeritus
City: Au Gres, MI
Vessel Name: Black Dog
Vessel Model: Formula 41PC
Join Date: Jul 2015
Posts: 21,131
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We have Weaver snap davits on our current boat with a 10’ RHI. We take the motor off and I use a line tied to the outboard side of the dinghy and just pull it up by hand. It only weighs about 70 pounds without the motor.
__________________
Boat Nut:
If you are one there is no explanation necessary.
If you aren’t one, there is no explanation possible.
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06-23-2020, 05:23 PM
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#10
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Veteran Member
City: Vancouver
Vessel Name: Hyalina
Vessel Model: Mainship Pilot 34
Join Date: Jun 2020
Posts: 26
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All good thoughts, thanks.
Our block and tackle is on the gunwale, will look to see if I can move it higher up.
The Weaver rods are also a good thought.
Much appreciated everyone.
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06-23-2020, 06:18 PM
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#11
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Guru
City: Gig Harbor
Vessel Name: Sandpiper
Vessel Model: Bluewater 40 Pilothouse Trawler
Join Date: Nov 2012
Posts: 2,315
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Quote:
Originally Posted by ewandeane
All good thoughts, thanks.
Our block and tackle is on the gunwale, will look to see if I can move it higher up.
The Weaver rods are also a good thought.
Much appreciated everyone.
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A higher connection point for the lifting tackle at the boat will increase the lift angle higher which should ease lifting the dinghy off the water. Connect too far down towards the top of the transom is too shallow of an angle and increases the lifting effort.
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06-23-2020, 10:13 PM
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#12
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Guru
Join Date: Jan 2010
Posts: 1,178
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I never even considered a block and tackle. I just pulled my 10ft achilles up by hand
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06-25-2020, 05:11 PM
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#13
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Guru
City: Gibsons, B.C., Canada
Vessel Name: Island Pride
Vessel Model: Palmer 32'
Join Date: Oct 2007
Posts: 4,409
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Pulling is ok depending on your condition , the line size, the height above the dinghy your pull point is.
Small line is hard to grip, age has a bearing and if your pull height is too low the pull becomes more pull towards you instead of lifting the dinghy side up the towards you.
Decent size line can be gripped readily. The block,tackle setup eases the effort a lot especially if the pull angle is too close to horizontal.
I did not need the tackle untill a few years ago. I used to just grab and pull. Then it was jerk and pull. I finally Icreased the line size and set up the block,tackle and it,s easy again.
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06-25-2020, 10:20 PM
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#14
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Guru
City: Gig Harbor
Vessel Name: Sandpiper
Vessel Model: Bluewater 40 Pilothouse Trawler
Join Date: Nov 2012
Posts: 2,315
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Quote:
Originally Posted by C lectric
Pulling is ok depending on your condition , the line size, the height above the dinghy your pull point is.
Small line is hard to grip, age has a bearing and if your pull height is too low the pull becomes more pull towards you instead of lifting the dinghy side up the towards you.
Decent size line can be gripped readily. The block,tackle setup eases the effort a lot especially if the pull angle is too close to horizontal.
I did not need the tackle untill a few years ago. I used to just grab and pull. Then it was jerk and pull. I finally Icreased the line size and set up the block,tackle and it,s easy again.
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Pulling a larger diameter soft line on a properly rigged block and tackle mounted high is way easier and faster instead of the crank handle. The ones that take a driver/drill is the exception.
I recommended a 4 to 1 boom vang earlier and they come equipped with a built in cam cleat that will hold the line so it can not slip out of your hand while pulling up. And allows for a controlled drop.
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