Laundryman
Member
My genoa wouldn't unfurl today( facnor on Beneteau Oceanis). Finally realised that it is twisted at the top of the mast. I need to understand how this happened please and best remedy. Thanks. Alan
Furling genoa, twist at top of forestay
- Thread starter Laundryman
- Start date
EdWingfield
New member
This one drove me mad too. Answer = your 'upper bearing twister thingie' should be close to mast head. Use a short rope from head of genoa to 'thingie' to allow this.
john_morris_uk
Well-known member
That might improve things.
The alternative is a halliard diverter to ensure that the angle of the halliard to the head of the sail is 10-15 degrees. (You might check that figure as my memory might be faulty?)
A halliard diverter looks like this: http://www.seateach.com/cw3/assets/product_full/Halyard Diverter Plate.jpg
jimi
Well-known member
keep the halyard tight and use a halyard deflector
jimi
Well-known member
halyard deflector and divertor are two different things. Divertor is basically a lead on the mast so the angle is increased whereas a deflector is a semi disc type thingie to stop halyard rotating
john_morris_uk
Well-known member
jimi
Well-known member
Cardo
Active member
Halyard tight = Win.
Tim Good
Well-known member
Yeah that's exactly how mine happened. Took me ages to figure it out and it simply twisted while trying to furl it as the halyard wasn't tight. Once tension was back it was fine.
wilkinsonsails
Active member
Sometimes if you have more than one genoa halyard ,only one is through the diverted fair lead on the mast .It could be hoisted on the wrong halyard ,it must be below the forestay attachment point.
If the sail is short on the hoist add a short strop to get the halyard swivel close to the top of the foil,otherwise you can get wrap that wy .
Cindy
If the sail is short on the hoist add a short strop to get the halyard swivel close to the top of the foil,otherwise you can get wrap that wy .
Cindy
capnsensible
Well-known member
Not too tight tho or you will knacker the top swivel......
DJE
Well-known member
Top swivel as high as possible (by use of strop if required) and halyard deflector on front of mast solved the problem for me. But not before I had damaged the forestay. Send somebody up to inspect it. On mine the wire opened out into a "birdcage" and the stay had to be replaced.
ronmarson
Member
I second that. Get the forestay checked Alan, the wire does not like being twisted.
Capt. RoN
Capt. RoN
dje67
Active member
I had a similar problem with my SD165 - by the end of last season I could hardly get the genoa to furl or unfurl. The upper swivel was the culprit. It is constructed with stainless bearings held in with steel circlips inside an alloy body. When I took the swivel off the rig and opened it all up, I found that the circlips were corroded and the corrosion was getting into the bearings, particularly the lower bearing which takes most of the load when the halyard is tight.
Here's what mine looked like inside:
http://i553.photobucket.com/albums/jj388/dje67/IMG_1021_zpsfe4f110e.jpg
Took it all apart, cleaned it all up, replaced the stainless balls with delrin balls, replaced the circlips with stainless circlips tefgel'd into the housing and the result was amazing. The swivel could be spun and it would keep turning for ages.
Will find out in the next few weeks whether it all works, but looks encouraging so far. The mast is off the boat at the moment. Not sure whether just putting the original stainless balls back into the bearing races would have been OK, but decided to try delrin as they like being run dry. Having said that I've added a couple of drops of "one drop" bearing lube which seems to work well.
I got the delrin balls from simplybearings.co.uk - 1 x 5mm Diameter Solid Delrin Polyoxymethylene (POM) / Celcon Plastic Balls
Option's
*Pack Size : Pack of 100
Got the circlips from Caleb components -
1 58mm Ext Circlip DIN 471 ST STEEL (471058SS)
Notes: Bag Qty 10 pcs 58mm x 2mm thk Circlip St Steel
£8.20 £8.20
1 75mm Int Circlip DIN 472 ST STEEL (472075SS)
Notes: Bag Qty 1 pc 75mm x 2.5mm thk Circlip St Steel
£1.70 £1.70
2 72mm Int Circlip DIN 472 ST STEEL (472072SS)
Notes: Bag Qty 1 pc 72mm x 2.5mm thk Circlip St Steel
£1.70 £3.40
I had to buy a set of very long-nosed internal and external circlip pliers.
Getting the swivel off the forestay was easy enough with the mast down, but seeing how it all goes together I'd be willing to do it with the mast up and a temporary forestay taking the place of the permanent forestay. You need to remove the furler drum (which is held on with a single allen bolt) and remove the allen bolt at the bottom of the lower foil. Swivel just slides off.
Hope this helps - I was starting to think that I was going to need a whole new furling gear - ouch. Repairing the existing setup was actually not too difficult and didn't cost too much. I overhauled the furling drum at the same time over the winter - the oil seals on that had worn and the grease was coming out of the drum.
I found this thread very useful:-
http://www.cruisersforum.com/forums...or-sd290-roller-furler-11871.html#post1097087
I also had some very useful help from nigel1 and ianr of this parish, which was much appreciated.
Here's what mine looked like inside:
http://i553.photobucket.com/albums/jj388/dje67/IMG_1021_zpsfe4f110e.jpg
Took it all apart, cleaned it all up, replaced the stainless balls with delrin balls, replaced the circlips with stainless circlips tefgel'd into the housing and the result was amazing. The swivel could be spun and it would keep turning for ages.
Will find out in the next few weeks whether it all works, but looks encouraging so far. The mast is off the boat at the moment. Not sure whether just putting the original stainless balls back into the bearing races would have been OK, but decided to try delrin as they like being run dry. Having said that I've added a couple of drops of "one drop" bearing lube which seems to work well.
I got the delrin balls from simplybearings.co.uk - 1 x 5mm Diameter Solid Delrin Polyoxymethylene (POM) / Celcon Plastic Balls
Option's
*Pack Size : Pack of 100
Got the circlips from Caleb components -
1 58mm Ext Circlip DIN 471 ST STEEL (471058SS)
Notes: Bag Qty 10 pcs 58mm x 2mm thk Circlip St Steel
£8.20 £8.20
1 75mm Int Circlip DIN 472 ST STEEL (472075SS)
Notes: Bag Qty 1 pc 75mm x 2.5mm thk Circlip St Steel
£1.70 £1.70
2 72mm Int Circlip DIN 472 ST STEEL (472072SS)
Notes: Bag Qty 1 pc 72mm x 2.5mm thk Circlip St Steel
£1.70 £3.40
I had to buy a set of very long-nosed internal and external circlip pliers.
Getting the swivel off the forestay was easy enough with the mast down, but seeing how it all goes together I'd be willing to do it with the mast up and a temporary forestay taking the place of the permanent forestay. You need to remove the furler drum (which is held on with a single allen bolt) and remove the allen bolt at the bottom of the lower foil. Swivel just slides off.
Hope this helps - I was starting to think that I was going to need a whole new furling gear - ouch. Repairing the existing setup was actually not too difficult and didn't cost too much. I overhauled the furling drum at the same time over the winter - the oil seals on that had worn and the grease was coming out of the drum.
I found this thread very useful:-
http://www.cruisersforum.com/forums...or-sd290-roller-furler-11871.html#post1097087
I also had some very useful help from nigel1 and ianr of this parish, which was much appreciated.