alec
New member
What produces the most power on the same fully loaded winch :-
1. More turns but thinner rope.
or
2. Thicker rope with less turns ?
1. More turns but thinner rope.
or
2. Thicker rope with less turns ?
Probably daft question about winches
- Thread starter alec
- Start date
savageseadog
Well-known member
No difference in Power. There will be a small difference in force (or torque) but the power will be the same.
reeac
Well-known member
[ QUOTE ]
What produces the most power on the same fully loaded winch :-
1. More turns but thinner rope.
or
2. Thicker rope with less turns ?
[/ QUOTE ]
Do you mean which gives the most grip? If so I find that self-tailing winches always grip with no slippage whereas without self-tailing the grip depends upon the tension applied to the tail of the line and this variability will mask any difference due to number of turns etc. I use three turns on self-tailers.
What produces the most power on the same fully loaded winch :-
1. More turns but thinner rope.
or
2. Thicker rope with less turns ?
[/ QUOTE ]
Do you mean which gives the most grip? If so I find that self-tailing winches always grip with no slippage whereas without self-tailing the grip depends upon the tension applied to the tail of the line and this variability will mask any difference due to number of turns etc. I use three turns on self-tailers.
boguing
Active member
In a 'line tension vs applied force on handle' test, thin rope wins. Better leverage. Frictional losses within rope/drum probably self-cancel.
Edit: Only applies to the line tension. If you were going to put the line around another drum with the intention of getting power from that drum, it wouldn't make any difference. Just thought I'd clear that up before I was tripped.
Edit: Only applies to the line tension. If you were going to put the line around another drum with the intention of getting power from that drum, it wouldn't make any difference. Just thought I'd clear that up before I was tripped.
Richard10002
Well-known member
[ QUOTE ]
What produces the most power on the same fully loaded winch
[/ QUOTE ]
Why do you ask? curious, or deciding on rope?
What produces the most power on the same fully loaded winch
[/ QUOTE ]
Why do you ask? curious, or deciding on rope?
Lakesailor
New member
The number of turns has no mechanical effect on the power as they are all on the same drum. No multiplication of effort. Perhaps there may be a difference in grip. But probably as much decided by the type of rope and friction between coils as on the drum surface.
A bit esoteric really.
A bit esoteric really.
CPD
Well-known member
No difference in force. Theoretically more grip with smaller diameter rope, but in reality, no difference.
AliM
New member
Agree with the others - no mechanical difference.
However, it's easier to pull a thicker rope, so particularly for a non-self-tailing rope, you'll do better with a thicker one, and it's less likely to slip if you put more turns on.
However, it's easier to pull a thicker rope, so particularly for a non-self-tailing rope, you'll do better with a thicker one, and it's less likely to slip if you put more turns on.
Bilgediver
Well-known member
There is no difference in mechanical advantage but the thicker ropoe ie easier to grip and handle when notapplying load without winch handles and just pulling.
NickiCrutchfield
New member
More turns, ie: a full drum, create less wear on the rope as each turn is sliding up the drum less per rotation. Only really relevant on self tailers.
As to power, there is, as already said, no difference.
As to power, there is, as already said, no difference.
boguing
Active member
I'm afraid that I disagree. Increasing the rope diameter is also increasing the effective diameter of the drum, which decreases the mechanical advantage.
alec
New member
[ QUOTE ]
[ QUOTE ]
What produces the most power on the same fully loaded winch
[/ QUOTE ]
Why do you ask? curious, or deciding on rope?
[/ QUOTE ]
Yus ! Thought I better find out before unloading the wallet.
I tend to like thicker ropes because they are easier to grip and kink less.
Many thanks for all the replies.
[ QUOTE ]
What produces the most power on the same fully loaded winch
[/ QUOTE ]
Why do you ask? curious, or deciding on rope?
[/ QUOTE ]
Yus ! Thought I better find out before unloading the wallet.
I tend to like thicker ropes because they are easier to grip and kink less.
Many thanks for all the replies.
boguing
Active member
My choice would be based on what sort of sailing you're doing.
If you're cruising, go for thick and comfy.
Racing, it's thin and mandatory gloves.
On sheets, guys etc. thick wins for gloveless comfort. But even when cruising, the low friction aspect of the Dyneema type stuff makes life incredibly easy, gloves notwithstanding.
If you're cruising, go for thick and comfy.
Racing, it's thin and mandatory gloves.
On sheets, guys etc. thick wins for gloveless comfort. But even when cruising, the low friction aspect of the Dyneema type stuff makes life incredibly easy, gloves notwithstanding.
