Since the last question I posted about Hull Oxidation proved so sucessful I'm pushing my luck. I've attached two photos to show damage to my mast that I'd like some thoughts from you all with. The "stripes" cannot be polished off. I've tried lots of stuff. It seems to be a removal of the anodizing if I had to guess (but I don't know much about that honestly). I don't know what caused them either....they came with the boat. The second photo shows wear/rubbing damage at the tang from the jib halyard block. I don't know what to use to repair the damage and/or some way to prevent the reoccurance. Have any of you run across this and what can be done?
Thanks in advance......
Greg
The nice part about being a pessimist is that you are constantly being either proven right or pleasantly surprised. - George Will "It's not that liberals aren't smart, it's just that so much of what they know isn't so" -Ronald Reagan
-- Have You Seen This? --
Re: mast help needed
[Re: bullswan]
#58492 10/06/0510:31 AM10/06/0510:31 AM
The nice part about being a pessimist is that you are constantly being either proven right or pleasantly surprised. - George Will "It's not that liberals aren't smart, it's just that so much of what they know isn't so" -Ronald Reagan
Re: mast help needed
[Re: bullswan]
#58493 10/06/0510:48 AM10/06/0510:48 AM
I'm not sure about removing the stripes. My masts have all be black anodizing and I haven't seen this problem on them.
For the wear under the forstay tang I have used some self adhesive plastic sheet. Usually clear, but whatever I could find laying around the shop at work. I don't know what the material is but is shouldn't really matter. I would think the more important part is how well the adhesive works. I changed mine at the beginning of every season.
Nick
Current Boat Looking for one
Previous Boats '84 H16 '82 H18 Magnum '74 Pearson 30 St. Louis, MO
Re: mast help needed
[Re: bullswan]
#58495 10/06/0501:49 PM10/06/0501:49 PM
I am not trying to be glib, but fixing that kind of stuff does not make you go any faster. Aesthetically it looks bad, I will agree, and I would probably try and get some off as well. But in the big scheme, your time would be better spent fairing the hulls, rudders, etc. Also replacing running rigging, lines etc would be more beneficial to getting the boat ready for the water. The rubbing near the tang can be lessoned by using rubber tape around the fittings. Anyway, good luck with the boat!!
Re: mast help needed
[Re: CraigO]
#58496 10/06/0502:06 PM10/06/0502:06 PM
I am going to have to agree with the previous post. Make sure all the hardware parts of the boat are at 100% before spending time on cosmetic stuff concerning the mast. I think the pain of getting rid of those scuff marks is not worth it.
Re: mast help needed
[Re: PTP]
#58497 10/06/0502:34 PM10/06/0502:34 PM
If those scuff marks don't come off with Acetone or MEK I wouldn't worry about them. The marks by your forstay can be helped by getting some white or black grip tape that is usually sold to put down on stairs to make them non-slip.
I appreciate the fact that it might appear that I'm being only fussy but maybe the pictures don't do the situation justice. The block at the top of the jib halyard is actually rubbing a hole in the mast if left to it's own. Gary's suggestion seems the best fix to me of bringing down the forestay the block. If I try to solve it by tape or such I believe it would simply rub through in no time. I got a PM to say the the block looks turned 180 degrees. That's interesting if true. What do you see? The other stuff ( the stripes) I agree is cosmetic. I was more curious if anyone else has experienced the same markings and I am stumped as to what caused it.
Thanks Greg
The nice part about being a pessimist is that you are constantly being either proven right or pleasantly surprised. - George Will "It's not that liberals aren't smart, it's just that so much of what they know isn't so" -Ronald Reagan
Re: mast help needed
[Re: bullswan]
#58499 10/06/0506:27 PM10/06/0506:27 PM
Are'nt those black stripes made from the front mast cradle that has foam or black tape wrapped around it or roller, somone already suggested acetone If not maybe some of the fender mark remover from West Marine........
Re: mast help needed
[Re: bullswan]
#58500 10/06/0506:28 PM10/06/0506:28 PM
Block may be turned only 90 degrees; maybe try a 90-degree shackle? I'm not sure how the Nacra sloops are typically rigged; I haven't studied one, and haven't owned one since I sold my 5.O 4 or 5 years ago.
This is a REALLY quick and dirty drawing...but if I remember correctly, the forestay should have a pigtale on it for the jib halyard cable block. Adding a small pigtail to it should take care of that problem...but that block looks like it's attached to it's own eye? Can you zoom out on that picture a little?
Jake Kohl
Re: mast help needed
[Re: Jake]
#58502 10/06/0507:46 PM10/06/0507:46 PM
Jake, When I bought the boat this was how the block was rigged but I went ahead and refitted it with new Shrouds and Forestay as a safety issue. The new forestay came with that pigtail that looks remarkably like your drawing. When it came I didn't know what to do with it since the original had NO PIGTAIL. It makes sense now what you and Gary are saying that I should attach that block to the pigtail and move it away from the mast. Kinda embarassed I didn't see it right off. I'll give that a try. Should I try to fix the indentation the block made already in the mast or forget it? Any thoughts on what I could fill the indentation with?
Thanks Greg
The nice part about being a pessimist is that you are constantly being either proven right or pleasantly surprised. - George Will "It's not that liberals aren't smart, it's just that so much of what they know isn't so" -Ronald Reagan
Re: mast help needed
[Re: bullswan]
#58503 10/06/0508:48 PM10/06/0508:48 PM
The nice part about being a pessimist is that you are constantly being either proven right or pleasantly surprised. - George Will "It's not that liberals aren't smart, it's just that so much of what they know isn't so" -Ronald Reagan
Re: mast help needed
[Re: bullswan]
#58506 10/07/0505:53 AM10/07/0505:53 AM
It looks like your issue have been solved, but for information. When we have had such problems, we have had success with a small alu-plate bent and formed to the mast, taped heavily to the contact-spot. Just replace the alu-plate every two-three years..
Thanks Rolf. I thought about having my local aluminum welder who did such a great job before on my main beam weld the indentation to fill it up. I think I'll just leave it alone and watch it for signs of a bigger problem. I will be moving the jib halyard block to the pigtail on the forestay TODAY. Enjoy the day in Norway! Greg
The nice part about being a pessimist is that you are constantly being either proven right or pleasantly surprised. - George Will "It's not that liberals aren't smart, it's just that so much of what they know isn't so" -Ronald Reagan
Re: mast help needed
[Re: bullswan]
#58508 10/07/0506:46 AM10/07/0506:46 AM
I wouldn't consider welding on a mast - the bend characteristics are pretty critical and heat treating the aluminum will not bid well for it's fatigue or brittleness.
Jake Kohl
Re: mast help needed
[Re: Jake]
#58509 10/07/0507:05 AM10/07/0507:05 AM
Second that Jake. I think I'd probably consider glueing a small ali plate dressed to shape over the damage, just for aesthetics. There are several high performance glues around suitable for use on aluminium - I'm sure that Jimbo could tell you what is available at your local hardware store in the US..
John Alani ___________ Stealth F16s GBR527 and GBR538
Re: mast help needed
[Re: Jalani]
#58510 10/07/0508:27 AM10/07/0508:27 AM
If it is just for aesthetics, fill the void with al filled epoxy. Gray JB weld will probably work too. Clean the void with acetone, then clean it again. Fill the void and smooth it with a plastic scrapper. There should only be epoxy in the void. Works on carbon masts too.
This is mainly for Rolf. Instead of using an Al plate to protect the mast you can use centerboard gasket held in place with waterproof duct tape. Layline showed this for a monohull but it works for the Tornado. I used a ~15cm strip of centerboard gasket. I glued it down with contact cement and then taped the edges with waterproof duct tape.