I have been reading with great interest for a long time. Many of the articles have been very helpfull. One problem that we have with our Cat is that nearly every winch will over ride. I have checked the entry angle and been very aware of the leaving angle of the lines; but to no avail. The drums appear to be very rough/aged. They are Merrimen winches. Any help would be greatly appreciated Thanks Tom s/v Simple Pleasures
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Richard
How many wraps?
How many wraps do you start off with? As long as the entry angle is in the -z (below horizontal)direction you shouldn't have that much trouble. Start off with 2 wraps at most...
How many wraps do you start off with? As long as the entry angle is in the -z (below horizontal)direction you shouldn't have that much trouble. Start off with 2 wraps at most...
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Tom Disher
Thanks for you interest. I have tried 2 and 3 wraps. The sheets seem to stay stationary and the sooner or later the starting wraps over ride the existing. I was thinking that the drums were not allowing verticle slippage because of how rough they are. Tom
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Bayard Gross
Possible expensive solution
If the current jib cars that you use have blocks mounted upright on springs, you may need to lower the exit from these blocks so that the line comes to the winch from as close to the deck as possible. One expensive fashion to do this, is to substitute current spring mounted upright blocks on the jib cars with what I think are refered to as "genoa sheet" cars which have a v shape block (or actually wheel) that will run the sheet closer to the deck. However, these can run upwards to $150 a piece, so this may not be cost effective. An alternative is to run the sheets into cheek blocks mounted aft of the winches which will get the line down low and then back to the winch. While the cheek blocks are considerably less expensive, they must be through bolted due to the stress from the winch. Hence a time consuming task that may be impossible due to an inability to obtain access under the deck aft of the winches.
If the current jib cars that you use have blocks mounted upright on springs, you may need to lower the exit from these blocks so that the line comes to the winch from as close to the deck as possible. One expensive fashion to do this, is to substitute current spring mounted upright blocks on the jib cars with what I think are refered to as "genoa sheet" cars which have a v shape block (or actually wheel) that will run the sheet closer to the deck. However, these can run upwards to $150 a piece, so this may not be cost effective. An alternative is to run the sheets into cheek blocks mounted aft of the winches which will get the line down low and then back to the winch. While the cheek blocks are considerably less expensive, they must be through bolted due to the stress from the winch. Hence a time consuming task that may be impossible due to an inability to obtain access under the deck aft of the winches.
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Tom Disher
Maybe I missed this infor in the original post. The angle that the sheet is led is well below the winch drum upon entry. Tom
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Joe
Are you tailing them correctly?
If you tail them below horizontal they will over ride every time. Notice how, on self tailing winches, the guide peels the line high off the top of the drum. You must keep the tail above the wrap. Since it sounds like you are aware of this technique, why don't you try polishing the drums?
If you tail them below horizontal they will over ride every time. Notice how, on self tailing winches, the guide peels the line high off the top of the drum. You must keep the tail above the wrap. Since it sounds like you are aware of this technique, why don't you try polishing the drums?
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Tom Disher
This is one question I had. These drums have been unsued for about 7 years, and are very rough. I've led the lines into the winch below the drum, tailed upwards above and cursed every which way. The line wraps down the drum until it is on the widest part then over rides. Maybe polishing will help?? Tom
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Richard
Override-
Are you going thru the turning blocks behind the winch?? Explain how the sheet is led from the clew of the sail to the winch.
Are you going thru the turning blocks behind the winch?? Explain how the sheet is led from the clew of the sail to the winch.
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Tom Disher
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Richard
Cheek blocks
If you don't have them, maybe now is a good time to put them in? See what Bayard Gross wrote. I have the same problem if their not led thru the cheek blocks on my boat. Good luck.
If you don't have them, maybe now is a good time to put them in? See what Bayard Gross wrote. I have the same problem if their not led thru the cheek blocks on my boat. Good luck.
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