Boom Bale Hole Repair

[Wet Spreaders]

Scuffed up the outside, scuffed up the inside (Dremel taped to a stick, with flappy wheel). Epoxy 1/16th G10 sheet to the inside. Fill with epoxy loaded with filler on the outside. Waiting for it to properly harden - will sand and see what I have tomorrow.

 

[Wet Spreaders]

View attachment 483571

What's the purpose of the amsteel loop tied between the two strops at the shackles?

 

[Zonker]

Maybe if 1 strop fails the block hangs from the other strop.

 

[weightless]

Maybe if 1 strop fails the block hangs from the other strop.

Does the tie attach to the blocks? My guess is that it keeps the strops from migrating apart.

 

[Zonker]

Yeah it doesn't go through the fwd block. I think you're right.

 

[DDW]

Keeping the strops in place is one thing you have to solve. Padeyes, lashings, something - they won't stay put on their own. 

 

[Wet Spreaders]

Keeping the strops in place is one thing you have to solve. Padeyes, lashings, something - they won't stay put on their own. 

Yeah - pressing the "easy-button" would be to screw a small padeye to the top of the boom. Neater and nicer would be to screw a padeye into the track so that it's mostly hidden. I have seen another solution where a piece of dyneema is threaded through the boom - trapped on the top by a small piece of stainless rod. It looks really neat, but I worry about hidden chafe and also fouling the outhaul.

 

[mgs]

Not too sure about this tack, but I wonder if you could use a couple of the harken gizmos or some other type fitting. The enlarged hole might cover the current oblonged ones, one on each side, maybe a spacer might be needed for the thickness but the thing would be held to the boom by thread compression. Could then run dyneema with spliced eyes through it to the block. 

 

[Wet Spreaders]

Boom looking very spiffy in its yellow ochre zinc primer. I'm planning to spray some regular grey primer over the top to fill scratches and imperfections. The paint says "thin with Xylene", which I can't get in the People's Republic of California. What to use instead?

 

[CaptainAhab]

Boom looking very spiffy in its yellow ochre zinc primer. I'm planning to spray some regular grey primer over the top to fill scratches and imperfections. The paint says "thin with Xylene", which I can't get in the People's Republic of California. What to use instead?

WTF kind of paint are you using? xylene & toulene are the fastest evaporating solvents. They use it in spray paint & carb cleaner. 
 

Acetone is very fast as well. Everything else is slow. Do they allow acetone in Cali?

 

[Wet Spreaders]

WTF kind of paint are you using? xylene & toulene are the fastest evaporating solvents. They use it in spray paint & carb cleaner. 
 

Acetone is very fast as well. Everything else is slow. Do they allow acetone in Cali?

Yeah - we can get Acetone. Paint is TotalBoat 2- or -1 pack primer. They say it's not for Aluminum, but I already sprayed Zinc Chromate on it, so the paint won't see any Aluminum, only Zinc Chromate.

 

[Zonker]

Which paint primer are you using?

https://www.totalboat.com/product/2-part-epoxy-primer/
Thinning: TotalBoat Epoxy Primer Thinner 200 

https://www.totalboat.com/product/aluminum-boat-barrier-coat-primer/
Thinner/Reducer: TotalBoat Epoxy Primer Thinner 20

https://www.totalboat.com/product/clear-epoxy-primer/
Thinning: TotalBoat Epoxy Primer Thinner 200

And the Thinner 200 =

https://www.totalboat.com/wp-content/uploads/2020/04/520415_TotalBoat_Epoxy_Primer_Thinner_200_SDS.pdf



So... I'd thin with isopropyl alcohol 10-15% if you can't get Xylene. Lots of paint strippers contain both xylene and toluene but maybe not in CA.

It's commonly used to thin epoxies but don't go nuts with the percentage.

 

[CaptainAhab]

That's interesting. Awlgrip 545 spray reducer is alcohols, glycol, benzene, and butyl acetate. The brushing is only glycol.  

Don't worry...all of them are carcinogenic

 

[Grande Mastere Dreade]

Hmm, I think I'm missing what you're asking. The strop just replaces a bail.

The strop takes the mainsheet load into the boom. It's pretty much a vertical force with a bit sideways when the boom is way outboard. Not much horizontal force going into the mast. 

View attachment 483571

who makes your strops

 

[Zonker]

Often local sailmakers will have some Spectra webbing and can sew them up

 

[Wet Spreaders]

who makes your strops

I'm going to try using a climbing sling. Someone else mentioned that climbing hardware does not have the longevity needed for sailing, but they are so cheap. Worth a try IMHO. Bluewater ropes does some beefy spectra slings with high breaking strain.

My main problem now is figuring out how to secure them to the boom (sliding). Options are to fashion something that jams in the bolt rope slot, or just screw something to the top of the boom. Thinking...

 

[Wet Spreaders]

Something like this - 

But that still has the problem of how to secure it from sliding... I have seen others screw right through the strop, but that's kinda ghetto. Ideas?

 

[Irrational 14]

1/4 Dyneema rope with eye splice at both ends for block attachment. Wrap around boom 5 times. Done and stays put.

 

[Wet Spreaders]

1/4 Dyneema rope with eye splice at both ends for block attachment. Wrap around boom 5 times. Done and stays put.

Round rope does not have the "coolness" factor of a strop. Also, climbing slings come in pretty colors...

 

[SloopJonB]

How about these in the bolt rope track?