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An interesting notion point, Rich. Perhaps our boats have an offset shaft specifically to reduce prop walk in forward gear in order to lessen the need to compensate with the rudder.
Tor
Silverheels, P-424 #17
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When I researched that article for SAIL, I read that
prop effect is actually caused by the angle of the
propeller’s face, however slight, to the vertical.
Don’t ask me how or why. Ergo, you’d negate the effect
by installing the prop shaft perfectly horizontal.
Accordingly, sail drives should produce no prop walk,
though I can’t personally confirm it either way.Considering this, I don’t see any value in offsetting a
prop shaft to port or starboard. Seems like that might
relieve some of the effect in one gear, but exacerbate
it in the other. Or not.Tor
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I’d always thought an offset prop shaft was to allow removal without dropping the rudder. (With a skeg it seems like it’d be essential.)
Correcting a boat’s prop walk in forward occurs almost automatically by slightly cocking the rudder angle. You don’t even think about it. It’s the strong effect in reverse that flusters some boaters until they understand, expect and learn to use it.
Tor
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Skipmac,
As mentioned, our boats don’t respond to forward power
bursts as quickly as we might wish because of the
longer-than-average distance between the prop and the
rudder. They do respond, they just take longer. All of
us 424 owners have had to learn our boats’ limitation
in this regard, and I suppose it’s not much different
in the 422’s. Ideally, you’ll get more accustomed to
yours practicing in open water so that next time you’re
maneuvering in a marina you’ll have a better feel for
what to realistically expect from your very excellent
vessel.For all that, I wish I could’ve seen that varnishing
woman’s face.Tor
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Lackluster maneuverability is a 424 trait. I believe it
is caused not by lack of power, but by the great
distance between the propeller and the rudder, the
primary cause of the sluggish, halfhearted response to
bursts of forward power at slow and no speed. It
doesn’t seem like more horsepower will do much to
improve it.Tor
Silverheels, P-424 #17
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Ditto about the gooseneck fitting. My mizzen gooseneck
eye-hole snapped in half during a hard jibe (mea
culpa). Had it re-welded in Antigua, better than new.Tor
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Stephen & Jody,
I re-rigged Silverheels myself back in 2007. It was not
difficult, even for me. I upsized all the wire sizes,
changed the main backstay from a split to a double and
added HF radio insulators. At the time the best deal I
found in the US for truly top quality (shop-tested)
rigging materials was Rigging Only
(http://www.riggingonly.com). The people there were awesome,
taking lots of time to coach me through any
shortcomings in my knowledge or abilities. The owner
even suggested that rather than spend the extra money
for all Sta-Lok fittings as I had intended, that I
would get equally sound, long-lasting stays & shrouds
by letting them put a swage fitting on the upper end of
the wires. He said in their experience an upper swage
will last as long as the wire itself, that it’s always
the lower swages that crack and fail.I could dig out all the pricing info, but it’s 7 years
old. Best to just ask them for current pricing. The
shipping (at that time) was not a big deal.Good luck,
Tor
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That’s awesome! I can use a replacement burner control
and all the knobs. Maybe the oven door, too.I plan to arrive back at Green Cove Springs Marina (NE
FL) around mid-April.Thanks!
Tor
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I must be one of the few left with an original bronze
shaft. I had it trued on a lathe at the local machine
shop a few years ago, but he said it needed very little
tweaking.Tor
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That does seem likely, Pete. Apparently, though,
there’s a solenoid lever arm on my Yanmar that will
shut it down much faster. I suppose I ought to locate
it in case of future need.Tor
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About 2/3 of a barn door.
Tor
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About 2/3 of a barn door.
Tor
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I swear I caught the same damned pot in the same damned
place in 1978! Had to dive over, adrift in near
darkness, to cut the SOB off my prop.Tor
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Man, I wish they’d had that zerk fitting in 1988.
Would’ve saved me a lot of dis- and re-assemblies.Tor
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