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Go Back   SailNet Community > Boat Builders Row > Helms > Helms25 Window Gaskets
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Thread: Helms25 Window Gaskets Reply to Thread
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Topic Review (Newest First)
07-21-2014 02:20 AM
TheManKinahan
Re: Helms25 Window Gaskets

Finished this job, I cut new windows with a jig saw ~3 mm's outside of the old windows, taped together as a guide. I then took the template old window with the new plexiglass to my router table, where I got a flush cut with the old window.

I then rerouted it with a 45 degree angle, after reading that Sika 295 UV (one of maybe 2 caulks rated for plexiglass) wanted a large bead (I think it was 3/8") to account for expansion and contraction. I figured that the 45 degree angle would buy me a larger bead, as the old gasket was <1/8" think, while maintaining the size and most of the strength. The sika 295 requires a primer, which I applied in two coats, because even after sanding it was tricky to get it to bind much to the plexiglass.


You can see the 45 degree and the thin primer running over the edge onto the paper still protecting the body of the plexiglass.

After that I used a massive amount of 295, wiping up the excess. It took me too long to realize I should have had the frames taped to protect them from the primer and caulk, so my first one was a lot uglier. Lastly, I used 1/8" butyl tape between the frames and the body, secured with same back side of the frame as is originally present.

If I was to do it again, I'd strongly consider cutting slightly bigger windows and doing a flush on body type design thats more popular these days. I say that because these frames still look ugly and have some corrosion on the aluminum since they are approaching 50 years old. Either way, my boat is much much more dry since I did it.

I'll try to find more photos, I know I took them, hopefully they are on my work computer.
04-09-2014 09:36 AM
wkupersa
Re: Helms25 Window Gaskets

I hate to admit it but I sailed all last year with painters tape over the port side port light holes. While the view isn't great, I thought that it was funny that the painters tape actually did a much better job of keeping the water out than the port lights did.

I'd better get back to that project.

--Willie
04-08-2014 05:32 PM
Wayne25
Re: Helms25 Window Gaskets

Good luck. The PO on my boat had replaced the clear plastic with tinted safety glass. It's bedded with a marine clear silicone. Its about the only place on the boat i would allow silicone to be used - glass.
04-06-2014 09:10 PM
TheManKinahan
Re: Helms25 Window Gaskets

Got the frame apart, and finished cleaning out the old caulk. I see that inside the frame its an old gasket. I think I'm going to replace that with caulk, not butyl tape, because this frame doesn't really have anything holding pressure between the frame and the plexiglass. A small riveted side panel isn't enough pressure. So I'm going to use an acrylic/polycarbonate compatible sealant, like Sika 295 for the frame to the window, and then use the butyl tape between the frame and the gelcoat/boat.

I'm a little worried that the frame might not pull itself as tight as necessary with the limited number of threads and age of the window, but hopefully I'm wrong. I can always use a larger diameter tap/screw set if it doesn't pull tight enough.

I'll try to post pictures as I finish.
04-06-2014 12:28 PM
TheManKinahan
Re: Helms25 Window Gaskets

How did the repair go? I have some butyl tape, and one window removed. I'm trying to determine if I need to remove the window from the frame. Did you end up keeping the original frame or going with something new? I'm going to try to remove the plexiglass from the frame and clean it up tomorrow. The prvious owner just put clear caulk on it from time to time, which looks bad an d only slowed the leak. It looks like the frame is two half frames riveted together, which should be fairly easy to drill out.

Mine were leaking pretty badly, there seemed to not even be silicone in one area of the window, so I'm looking forward to getting it done right.

Any advice? Did you remove the plexiglass from the frame or just the frame from the window.
06-29-2012 12:43 AM
Wayne25
Re: Helms25 Window Gaskets

She looks in great shape. Just needs TLC. Get some bottom paint on her.
When you pull her out (assume on slings), look up inside the centerboard trunk with the centerboard down. There is a guide roller up inside the trunk sort of inline with the winch that keeps the pendent going vertical up to the winch as the keel swings. Sometimes they stop rolling and cut a groove in the roller. its made out of metal. Also look for signs the pendent making a grove in the trunk fiberglass as it comes down from the winch. You need to look up into the trunk with a flashlight to see it. Also you can take some flash pictures so you can study what is up there.
keep the pictures coming.
06-27-2012 10:00 PM
wkupersa
Re: Helms25 Window Gaskets

Early photos of said Helms 25 can be found here. I'll add more photos as I start digging into more projects. So far it has been about cleaning the desk.

https://plus.google.com/photos/10529...83283366480593
06-25-2012 10:08 AM
wkupersa
Re: Helms25 Window Gaskets

Welst, the boat has a Greek name written in Greek characters that I don't know how to pronounce. My friend tells me it means hiding or saving as in saving money but it depends on the context. I'm thinking that it means hiding money in a hole in the water.

It is and has been on private dock on a creek off the Magothy River in Severna Park, MD and will be moving to a nearby marina next week. There is no trailer with it.

The deck and topsides seem to be structurally in good shape. I don't see any soft spots on the deck. It has some small fractures in the gelcoat in some high stress areas like around the winches, but otherwise seems solid.

All of the teak is cracking and needs treatment or replacing.

The Windows leak like a screen and need to be replaced, ergo this thread :-)

I haven't seen the bottom yet. I understand that it got a shorthaul last year and that the bottom looked good. I understand that the keel looked pretty good to less corrosion around the hole where the cable goes through. I am hoping to have it pulled this Fall/Winter and paint and inspect it.

It has a Mercury 8 HP motor (1978?) that it is working but needs some TLC. It misses occasionally and stalls sometimes when put in neutral.

It's mainsail was completely beat and I bought a used Macgregor 26 sail that seems to fit it nicely. It has a 110% jenny that seems to be in good shape.

The electrical system needs attention. I was surprised and please to see that the masthead light works when I hooked it up to a battery directly at the bottom of the mast. No love anywhere when I hook the patter to the panel and try any of the systems. I haven't had a chance to look at that yet.

Below deck needs attention but it seems mostly aesthetic. The table is dead. The fiberboard had been soaked and is falling apart, probably from the window leakage. The sink and icebox are DISgusting. I've been reading about what others have done with the icebox and am contemplating some serious rebuild of that area.

The cushions need to be put out of their misery. :-)

The rigging is in good shape.

The thing that I think will be one of the manually hardest to deal with is that a previous owner decided to use tar to try to waterproof around the hatches and popup. It all needs to be cleaned up.

I'm working getting photos onto Picasa and I'll post out to the group when they are up.

In the mean time I really am grateful for the opportunity to learn from the group's collective experience.

Thanks!
--Willie
06-24-2012 07:44 PM
jumaggafanny
Helms25 Window Gaskets

What was the boat named? I have some limited
info of a few Helms.
What condition are the sails in? Did it have a trailer? Spill the goods. Motor?
Post a photo soon. I'm watching Debby and headed to coast in the AM but my boat is in the backyard. It been two years since she's been wet, jut busy sailing other people's boats
06-23-2012 09:13 AM
wkupersa
Re: Helms25 Window Gaskets

Thanks David, That is a coincidence! I'll take a look at the article.

I'll update here when I have some progress to report and let you all know what I did and how it went.
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