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post #41 of 50 Old 3 Weeks Ago Thread Starter
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Re: Island Packet 35

I appreciate the input. I'm definitely still learning.
Yes, sometimes I see the batteries go little bit under 12 V, like 11.9, in the morning. I know it's a bit under 50%. Also, the battery bank is getting old (7 years).

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Re: Island Packet 35

I would thumbnail 11.9 volts at 30% state of charge. Gels can take this better than any other, but it still hurts a bit.

If they're seven years old, you're due for replacement very soon anyway. If they're getting you through the day, just work on understanding the charging systems and prepare for a fresh new bank.

You want to read up on 3 stage charging profiles (bulk, absorb and float) and it's mandatory to have a shunt that can read amps going into your battery. Most basic monitors just measure what's being used or being generated by charge sources. However, as I said, what's actually going into your battery is usually very different.

All the best with your refit.
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Re: Island Packet 35

Seems likely that the current you are reading may be on the battery side of the controller (output) rather than the solar (input). 30 amps at 12 volts is 360 watts, which is certainly possible with 400w of modules.

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Re: Island Packet 35

Take this with a grain of salt. I remember helping take a rudder off an IP-38 years ago. It SEEMS like it was fastened to the hull with what appeared to be "too small" 1/4-20 bolts. The rudder had become unshipped in a grounding. At the time, I was close to buying an IP-35, but someone beat me to it. I needed another boat like a hole in the head anyway. But that was the area on the IP that, to me, was of most concern. A relatively easily unshipped rudder and not a lot of meat in those 1/4 20 bolts.
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Re: Island Packet 35

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Take this with a grain of salt. I remember helping take a rudder off an IP-38 years ago. It SEEMS like it was fastened to the hull with what appeared to be "too small" 1/4-20 bolts. The rudder had become unshipped in a grounding. At the time, I was close to buying an IP-35, but someone beat me to it. I needed another boat like a hole in the head anyway. But that was the area on the IP that, to me, was of most concern. A relatively easily unshipped rudder and not a lot of meat in those 1/4 20 bolts.
Thanks for the input. I will definitely take a close look at the rudder when I pull her out.

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Re: Island Packet 35

Maine-Sail has a great website on marine electrical installations...good article on SOC (State of Charge) here - https://marinehowto.com/under-load-b...oltage-vs-soc/
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Re: Island Packet 35

Quote:
Originally Posted by VIEXILE View Post
Take this with a grain of salt. I remember helping take a rudder off an IP-38 years ago. It SEEMS like it was fastened to the hull with what appeared to be "too small" 1/4-20 bolts. The rudder had become unshipped in a grounding. At the time, I was close to buying an IP-35, but someone beat me to it. I needed another boat like a hole in the head anyway. But that was the area on the IP that, to me, was of most concern. A relatively easily unshipped rudder and not a lot of meat in those 1/4 20 bolts.
Some years ago now, an acquaintance of mine was buying an Island Packet and asked me about something he observed on the boat. That boat seemed to have a bent rudder post and and the metal horizontal member that appears to support he bottom of the rudder was loose. When you turned the rudder that plate moved horizontally due to the bent rudder post. In researching the cost of repairs he spoke to several yards to get estimates. Quite a few of the repair yards mentioned experiencing and repairing this condition on a number of different Island Packets of different sizes and that this was a common problem on Island Packets on the Chesapeake. The comments from the boatyards was that these were essentially post hung rudders that had the metal fitting solely to keep lines out of the prop and to take some of the fore and aft forces on the rudder. But the design of the boats made the rudders extremely vulnerable to damage since the bottom of the rudder was so close to the depth of the keel that it was likely to receive an impact in a grounding and freeing.

The take away was that the typical Island Packet rudder was very vulnerable to damage in a grounding.

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Re: Island Packet 35

While all that may be true, this particular boat was subject to a hurricane Michael boat pileup on shore and the rudder was undamaged, as verified by several above and under water inspections as well as subsequent 150 nm trip in the Gulf. The rudder and worm gear steering are really beefy. But I will be inspecting it very closely when I pull the boat out of the water.
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Re: Island Packet 35

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Originally Posted by krisscross View Post
While all that may be true, this particular boat was subject to a hurricane Michael boat pileup on shore and the rudder was undamaged, as verified by several above and under water inspections as well as subsequent 150 nm trip in the Gulf. The rudder and worm gear steering are really beefy. But I will be inspecting it very closely when I pull the boat out of the water.
For what it was worth, when we were investigating the repairs to the boat I mentioned above, the consensus was that the worm gear was pretty beefy, but that the rudder post and bottom plate were not particularly all that robust.

Jeff
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Re: Island Packet 35

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Originally Posted by Jeff_H View Post
For what it was worth, when we were investigating the repairs to the boat I mentioned above, the consensus was that the worm gear was pretty beefy, but that the rudder post and bottom plate were not particularly all that robust.

Jeff
From what I can see, the rudder post is 2 diameter solid stainless steel. That seems pretty beefy to me.

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