Keel steel

Jmckamey · Post by **Jmckamey** » Thu Jul 15, 2010 6:14 am

While grinding rust off on my keel last night I couldn't help but notice the surface seems to be a lot softer than I had expected. This leads me to one of two conclusions; 1) the keel is so rusted that the dammage penetrates deep or; 2) the keel is some type of alloy that is more dense and softer than mild steel. Anybody notice the same while reconditioning their keel?

Capt. Bondo · Post by **Capt. Bondo** » Thu Jul 15, 2010 8:59 am

Yes, I noticed that there seemed to be a more solid chunk of steal where the cable attaches, I assumed that the keel may have a back bone of steal and cast iron around it.

Jmckamey · Post by **Jmckamey** » Thu Jul 15, 2010 9:29 am

Think I agree. Just did not realize cast was so soft.

Banshi · Post by **Banshi** » Thu Jul 15, 2010 5:05 pm

Just did not realize cast was so soft.

Brittle might be a better word..............

Bhacurly · Post by **Bhacurly** » Fri Jul 16, 2010 7:15 am

After I had mine sandblasted I tried to drill out the pivot pin hole area and put in a bushing. The hole was getting oblong at the ends from wobbling... I quickly dulled 2 new special bits I bought and was glad I rented a heavy duty drill, cuz I think I ruined it, and I eventually gave up. It was definately harder steel than I was equipted to handle.

sauerleigh · Post by **sauerleigh** » Fri Jul 16, 2010 5:54 pm

I noticed that when I remove the shackle from my keel that the mounting area seemed to uniform for just cast iron and also seemed to be too thin in section to safely carry the load of the keel. I did think much about it at the time. I worked for a company that made equipment for the steel industry, when we still had a steel industry, anyway, we supplied cast iron rolls that we about 24" in dia. and cast around a 3" dia. steel shaft that was machined after casting. It is quite possible that the keels have a steel backbone running from the pivot to the cable attachment.

amayotte · Post by **amayotte** » Fri Jul 23, 2010 7:45 am

Can anyone tell me what shackle pin diameter would fit in the keel pin hole.
I am going to replace the shackle but don't know how big I can go and am unable to measure it.
I am thinking either 1/4 or 5/16??

Thanks,
Adam

EmergencyExit · Post by **EmergencyExit** » Fri Jul 23, 2010 10:02 am

I have my old one at home, I'll measure it tonight, can't recall offhand.

I thought that this great article on Windward's site would have that info, but it appears to be the only thing not mentioned. Unless I missed it.

Jmckamey · Post by **Jmckamey** » Fri Jul 23, 2010 11:32 am

I can measure the hole for you as my keel is still on the ground. Just waiting for new keel brackets now.

sauerleigh · Post by **sauerleigh** » Fri Jul 23, 2010 11:42 am

The shackle I removed has a 5/16" pin, a little over 1 inch wide and about 1 1/4" from pin to bail. The pin was safety wired to the shackle. The cable is 3/16", about 8' long. The thimble gave out.

amayotte · Post by **amayotte** » Fri Jul 23, 2010 12:45 pm

Thanks, that's awesome.

Jmckamey · Post by **Jmckamey** » Fri Jul 23, 2010 4:43 pm

5/16 hole in my keel.