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Old 05-15-2013, 12:22 PM   #101
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I know a few people who have driven the GB41(43) and they all tell me it's fantastic. Particularly the ability of the boat to hold station even with adverse currents and winds. The boat can be accurately moved directly sideways in the face of wind or current or both. No need to try to manipulate thrusters and main engines and rudders to get into tight spaces or get up to a dock and hold it there while someone gets lines ashore and secured.

Based on these experiences and what I've read about them I think pod drives are the way to go if one can afford them. However I don't think there is a valid return on investment to retrofit them to a boat like ours.

I don't think they are any more vulnerable to debris in the water than the running gear on our boat. With either conventional drive or pod drive, the need for vigilance while underway is the same as far as I'm concerned. In 15 years of running our boat year round in waters noted for the amount of debris in them we have never hit anything and we don't expect to in the next 15 years. If we had a pod boat I would expect the same.
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Old 05-15-2013, 12:32 PM   #102
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I think it is PSNEELD's tag line. (I'm sure to be corrected if wrong). Maybe it was SkipperDude's. Sure miss him.

something like "If you can't fix it, it shouldn't be on a boat".

I know that electrical controlled fuel delivery on diesels will be all that is available in the future. Being a neanderthal and having had many electrical problems from the diesels in our newer trucks, I am not happy to have to deal with that on my boat. Electrical problems are parts change problems. No fixing. Just changing. Most problems I have dealt with on boats were electrical-----inverter, charger, pumps etc. It's a personal preference, but I just don't like electrical controls.
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Old 05-15-2013, 02:00 PM   #103
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What material are pods made of? Aluminum like out drives? How do they handle corrosion? (Sorry for the newby questions, I've never seen pods in person)
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Old 05-15-2013, 02:19 PM   #104
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Originally Posted by Art View Post
Approx - How many Pods in service at this time and what is the industry projection for mfg of Pods this year?

Also - what type of complication exists for inclusion of Pods during repower of a "classic" cruiser... i.e. a used boat?

And - how many Pods do you know of that have either failed of their own volition and/or been ruined or lost due to collision with dead heads or due to groundings.

In addition - do Pods increase the draft of a boat in comparison to straight drive or out drive... if so by how much?

Thanks, Art
Good questions.
I have no idea as to how many pods are in service, but the world-wide number of manufacturers using pods is large - i would guess over 100.
I don't know if Volvo even allows for retrofits of pods - their engineers review new-boat plans, make performance predictions and give the builder a lamination schedule for the mounting areas. I do know of one semi-displacement production yacht that did NOT get approval for IPS pods.
I know first hand of corrosion issues due to lack of maintenance - the pods needed to be replaced at owner's expense - he never replaced the zincs. No personal, first hand knowledge of failures. I have grounded once and hit a sunken timber once with no damage to pods - steering was not affected either - just damage to props and center/forward shafts.
Pods use smaller diameter propellers - hull to prop tip clearance is similar to slant shaft installations - so no increase in draft and perhaps a bit of a decrease. Of course, this is assuming one were to replace existing drive train with pods, which most likely can't work since there is all this increased weight aft.

Anything else?
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Old 05-15-2013, 02:21 PM   #105
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What material are pods made of? Aluminum like out drives? How do they handle corrosion? (Sorry for the newby questions, I've never seen pods in person)
Made of castings similar to bronze with a variety of zincs plus active cathode protection.

The ZF 2500 (similar to Zeus) is of an aluminum-type of alloy resulting in less weight and lower cost - a bit less HP, too.
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Old 05-15-2013, 04:37 PM   #106
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Pod control may take a little getting use to.

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Old 05-15-2013, 05:19 PM   #107
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...until it's reduced to this as a control.

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Old 05-15-2013, 08:17 PM   #108
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...until it's reduced to this as a control.

Figment, smigment. You are going to think figment when a unicorn runs up behind and hits you in the . . . . well, you know. When your heat or a/c quits working today, what is it usually due to? A circuit board maybe? Never had a computer crash I suppose. (uh oh, shouldn't use that word to a pilot. sorry)

I just had a discussion with one of our customers who was high in management making electronic components to control the modern automobile engines. He was lamenting a new washing machine not working. He called the manufacturers hotline. What was it? You probably guessed it. CIRCUIT BOARD.

Until boat electronics go through the same rigorous testing that aeronautics electronics go through, I'm sorry, but not much faith here.

It's not the joy stick that scares me. It the electronics it activates. Mark's picture gives a good idea of the complexity of what's behind the joy stick.
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Old 05-15-2013, 08:29 PM   #109
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Don, Don, Don... To keep sanity...We all should make love with our wife.

That's become the only "board" that won't fail... lest of course you or she short circuits!

And, from picts I've seen of you two... that's just not a gonna happen!

Happy Boating Daze!!
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Old 05-15-2013, 08:47 PM   #110
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Don, Don, Don... To keep sanity...We all should make love with our wife.

That's become the only "board" that won't fail... lest of course you or she short circuits!

And, from picts I've seen of you two... that's just not a gonna happen!

Happy Boating Daze!!

Art, it seems like you have figured out women. Do you mind sharing that knowledge?
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Old 05-15-2013, 09:02 PM   #111
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I don't know if Volvo even allows for retrofits of pods - their engineers review new-boat plans, make performance predictions and give the builder a lamination schedule for the mounting areas. I do know of one semi-displacement production yacht that did NOT get approval for IPS pods.
This is a money's no object refit and is not closely related to the discussion, but it is quite something.

A refit of a 1954 wood Huckins with pods. Four short videos here with an intro article:

Videos: "Huckins Motoryacht With a Pod Drive"


Longer PDF here from Professional Boatbuilder with photos of the process:

http://www.yachtingsolutions.com/new...en_classic.pdf
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Old 05-15-2013, 09:23 PM   #112
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Art, it seems like you have figured out women. Do you mind sharing that knowledge?
Do I read the happy/pleased/satisified energy-depictions in picts with you and wife incorrectly? I doubt it!

Three basics, when equally provided by both, enable relationships to work...

1. Truth
2. Sharing
3. Giving

Oh yeah... Did I Mention TRUTH!
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Old 05-15-2013, 11:22 PM   #113
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Art, I was just fooling with you. Lou and I are very happy people. We both feel very blessed about a lot of things not the least of which is having each other. I will send you a PM.
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