Rope reel

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Wansworth

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My boat carries 20mts of chain and instead of adding more chain I was thinking of a length of say 50 metres of rope say 12 mm which would be kept on a reel......anyb9dy have a good idea how big the drum needs to be to accommodate the rope in a in use situation ie not neatly wound on,ta
 
I have lots of rope to store on my little boat . Jib sheets spinnacker sheets and down hauls. I detest people who want to coil ropes up for storage. I have made a bag out of old sail cloth with 2 loops sewn into the top like handles. I attach one end of the rope to one handle and just feed or roughly flake the rope into the bag finally tieing the last end to the other handle. You end up with convenient, tidy stowage with no twists or knots You just pull it out when you want it. This bag of rope is then easy to stow. I use something similar for a MOB safety throw rope.
I would guess at a need for a bag around the size of a pillow case for your 50m of 12mm. Just a thought good luck olewill
 
Visit your nearest electrical contractor. He will have cable drums sitting in a skip. Ask for a few of different sizes, and see what suits best.
 
Wansworth said:
My boat carries 20mts of chain and instead of adding more chain I was thinking of a length of say 50 metres of rope say 12 mm which would be kept on a reel......anyb9dy have a good idea how big the drum needs to be to accommodate the rope in a in use situation ie not neatly wound on,ta
Click to expand...

I'm away from home at the moment but I have a formula somewhere on my PC for working out the drum size. If no one else comes up with it before I get home tomorrow, I'll post it here.
 
I have the same amount of chain, 20m of 8mm, with 45m of 14mm octoplait nylon rope permanently attached, so 65m rode in total. No windlass.
The chain goes into the anchor well, the rope is coiled up in two bundles 50/50 and held together by lashings of different colour. These are stored on top of the chain in the anchor locker. The second coil of rope is not used very often.
When retrieving the anchor I just pull the rope and coil it by my feet on the foredeck. As the first chain links appear I pause to put the lashing on. When anchor is up and secured in the bow roller I sweep the two coils on top of the chain and close the lid.
Winding the rope on a reel sounds over complicated to me.
 
length of rope on a drum (not counting the wee diagonal bits and changing layers)

length = average circumference * number of layers * turns per layer

l=(MaxRadius+MinRadius)*pi * (MaxRadius-MinRadius)/RopeDiameter * HeightOfDrum/RopeDiameter
l=(MaxRadius^2-MinRadius^2)*HeightOfDrum*pi/(RopeDiameter^2)
since radius is not best measurement
length on drum = 4*(MaxDiameter^2-MinDiameter^2)*HeightOfDrum*pi/RopeDiameter^2

So.. you have 3 unknowns, drum min diameter, max diameter and height.
A for instance:
rope 12mm dia
drum inner dia 150mm
drum outer dia 250mm
drum height 200mm
give about 700m

edit: fixed maths
 
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This is how I calculated the size of my anchor line drum

http://www.thern.com/wp-content/uploads/EngineeringInformation.pdf

IMGP2643_zpss0ogsemn.jpg


IMGP2735_zpsxq17symt.jpg
 
BabaYaga said:
I have the same amount of chain, 20m of 8mm, with 45m of 14mm octoplait nylon rope permanently attached, so 65m rode in total. No windlass.
The chain goes into the anchor well, the rope is coiled up in two bundles 50/50 and held together by lashings of different colour. These are stored on top of the chain in the anchor locker. The second coil of rope is not used very often.
When retrieving the anchor I just pull the rope and coil it by my feet on the foredeck. As the first chain links appear I pause to put the lashing on. When anchor is up and secured in the bow roller I sweep the two coils on top of the chain and close the lid.
Winding the rope on a reel sounds over complicated to me.
Click to expand...

My Vega doesn't have a locker fro the chain etc the chain comes up the pipe so my normal anchoring being within the harbour has been within the scope of the chain.I imagine to anchor in deeper water I would bring the chain up on deck and attach the rope before anchoring, bit of a fandango.The real answer would be all chain......
 
Cardboard doesn't last very well in a damp locker. Even when I did this once and varnished the reel, it fell apart after a couple of years.
 
Wansworth said:
My Vega doesn't have a locker fro the chain etc the chain comes up the pipe so my normal anchoring being within the harbour has been within the scope of the chain.I imagine to anchor in deeper water I would bring the chain up on deck and attach the rope before anchoring, bit of a fandango.The real answer would be all chain......
Click to expand...

OK, what about one of these, mounted on the inside of the pulpit for easy access?
http://www.yachtingsolutions.co.uk/hardware-anchoring-and-mooring-ankarolina.irc
Might still be awkward to retrieve the webbing and wind it up on the reel at the same time, though...
 
Rogershaw - I do like that drum. I am guessing you are not in the UK and came from somewhere else or was custom made?
 
Custom made as is most of my stainless fittings. A number of custom stainless fittings shown on my web site URL in my signature.

A visiting yacht had something similar and I copied it wit a couple of mods. I have an small engineering workshop at home so can do limited machining, tig welding and polishing of stainless steel.

I added centre locking nut and a fold away winding handle. Just need to get 100m of 20mm anchor plat to fill the real.
 
BabaYaga said:
OK, what about one of these, mounted on the inside of the pulpit for easy access?
http://www.yachtingsolutions.co.uk/hardware-anchoring-and-mooring-ankarolina.irc
Might still be awkward to retrieve the webbing and wind it up on the reel at the same time, though...
Click to expand...
Why not go for the ankarolina? Thousands of Swedes use them for their customary stern anchor when mooring bows on to the shore. The webbing strap is strong and stows very neatly on the drum. The drum is not designed to wind in under load, so you do need to haul in first, then wind up the slack tape. With two people working together it is quick and easy.
I have one permanently fitted to my boat, based now in the Med. We use it for taking a long line ashore, for which it is super.
 
Resolution said:
Why not go for the ankarolina? Thousands of Swedes use them for their customary stern anchor when mooring bows on to the shore. The webbing strap is strong and stows very neatly on the drum. The drum is not designed to wind in under load, so you do need to haul in first, then wind up the slack tape. With two people working together it is quick and easy.
I have one permanently fitted to my boat, based now in the Med. We use it for taking a long line ashore, for which it is super.
Click to expand...

Just for interest, what, if any advantage does the tape have over rope?
I do know that it vibrates horribly in the wind.:rolleyes:
 
I had considered a drum for a my 120m shore lines but it was one more thing in deck to jam / snag / windage. So a I flake them into large tough dry bags and they come out easily without twists. The dry bag has a reinforced loop on the bottom to clip it to deck and inside the end of the rope is also secured to the same reinforced loop.
 
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