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  Coming out of Waves into the Air!

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Author Topic:   Coming out of Waves into the Air!
vdbgroup posted 05-22-2002 11:47 PM ET (US)   Profile for vdbgroup   Send Email to vdbgroup  
I have a habit of not being able to throttle down on my OR 18 w/ 150 Yamaha when I am approaching some light swells that can get you airborne. The landings are not too bad, except my overheat alarm sounds, and then I have to stop and shut-down to turn-off overheat alarm. I think I got a loose connection somewhere.

I know the OR 18 will take a beating when I was 21, we fished a kingfish out of Port O'Connor, TX about 20 miles offshore in 4' to 5' swells. Since we (4 crew) had to keep up with the competition, we did not let off throttle. Over several swells we could count a solid 2 seconds, maybe 3 of air. Once we got past 10 miles the frequency of the waves increased (lessened?, not as chopped) and we only flew occassionally. WE never worried about the Whaler, just the damage we were causing to our young bodies. I have seen a pic on Cetacea of an 18' OR taking air in a 11' swell in Puget Sound, it brings back memories.

Question: How many of you fly occassionally in your Whalers, and what are the repurcussions, on your hull, engine, and any other things you care to discuss.

Does anyone else experience the Over Heat alarm firing upon landing?


B Bear posted 05-23-2002 12:05 AM ET (US)     Profile for B Bear  Send Email to B Bear     
I have gone airborne in my D16, nothing bad or broken. Never gotten an alarm on my Honda 90. I have just learned to adjust the throttle to skip over the crests and smooth out the ride. Except for those BIG wakes which I like to ease over. lol
The back just don't care to be jarred much anymore.
Bear
Outraged posted 05-23-2002 07:58 AM ET (US)     Profile for Outraged  Send Email to Outraged     
I have an '76 19 Outrage and wave jumping is one of my favorite pastimes. The downside of this, over the past couple of years, has been,things tend to loosen up. The seat in front of the console was taken out, when a friend of mine was seated on it, and we came off a wave wrong, he went up in the air a bit, came down hard on the seat, and all four screws in the console ripped out, holding the frame work for the seat. I'm thinking, maybe a cooler seat would be a good replacement. Also, my steering head had loosened up over time. ( I wondered what those nuts were for that I kept finding on the deck!) The gunnels on both sides of the boat have been resecured as well. I've learned to constantly check things on the boat to make sure they aren't coming loose. Outraged
JEvans posted 05-23-2002 08:14 AM ET (US)     Profile for JEvans  Send Email to JEvans     
I have a 97 Outrage 24 and when my brother drives he has only 2 speeds slow and as fast as possible. He gets air all the time I think he's trying. never thought we could do that with a boat this size but it's so cool like were in a James Bond movie or something. Needless to say you better hold on for landing.

Joe

Smallfrye posted 05-23-2002 11:04 AM ET (US)     Profile for Smallfrye  Send Email to Smallfrye     
I try not to fly but have worked on several boats that regularly spent time airborn. Most every screw needed to be reset(epoxy), through hull fittings in the foreward compartments broke loose around the seal and several guages had physically broken internal components. IF whalers were ment to fly, they would have wings.
Ponchee posted 05-23-2002 11:27 AM ET (US)     Profile for Ponchee  Send Email to Ponchee     
I used to race APBA offshore Class C in my 27' Cougar cat with twin 240 HP V6 Mercs.
I had enough air time for all of us, at around 90 MPH 3-5 foot waves make for some scary situations.

We had to run a 5/8 water hose from one engine to the other to keep both of them cool during races when airtime was abundant.
We even had hull pickups rather than pulling from the lower unit, plus bungee strap (cord) was needed to keep the mid housings from taking monster abuse from the jarring.


If your pump is sucking air for extended periods it takes at least that long to get water back up to the engine to cool it.
Water drives water not air so it's flow rate is affected also.

Assuming your water pump hasn't been affected by running dry.
I'd bet for some reason it's simply getting excessive air in the pump to keep the water supply to the engine low resulting in the buzzer going off.

Stopping and letting it cool proves it to me.

You can rig it to prevent the problem but sometimes it creates others.

I'd suggest first slowing down, if that isn't going to happen.
Lower the engine to keep it in the water a little bit longer, trim the nose down to "follow" the backside of the swells or get a hull pickup.(we're talking big mods to the lower unit and NOBODY like drilling on the lower transom of a whaler.

Before and after each race meant going around and tightening loose screws and fixing broken stuff.

The drive train and engines took a beating more than the hull.
I'd pay attention there it's very hard on the lower units.
I own a whaler now because I don't want to do those things anymore even if the boat can handle it.

Of course I do have a V6 Merc on the 18' outrage "just in case" I want to re live the good ole days!
It's only a 135 but it still has the same sound as those screaming 240 EFI's..

Best of luck.

vdbgroup posted 05-23-2002 11:08 PM ET (US)     Profile for vdbgroup  Send Email to vdbgroup     
Thanks for responses. I meant to say "we fished a kingfish tournament" not fished a kingfish. Sorry I am losing it in my 40's.

I think the term "shake-down" cruise applies to us whaler flyers, we know after a good beating what screws need tightening.

triblet posted 05-24-2002 12:50 AM ET (US)     Profile for triblet  Send Email to triblet     
vdgbroup, the frequency (= how often)
DECREASED when you got off shore. The
interval (in seconds) increased.

I got airborne once at about six knots.
We got caught down in Carmel Bay with an
unforcast uphill run to Monterey, so we came
home at about 1200 RPM. All of
sudden, everything got quiet (no water on the hull noise) and the engine reved up, then
BANG as we came back down. There had to be
signifcant air under hull. Maybe the skeg
was still in the water. I'd love to have
a picture.

But what was really hairy was the 8' breaking windchop after we turned the corner along
the 17 mile drive from Cypress Pt. to Pt.
Pinos. It was coming from the port side, and
had the potential to break into the boat. I
had to dodge a couple of white water bullets
that afternoon.

Chuck
as we came back down.

MCano posted 05-24-2002 05:11 AM ET (US)     Profile for MCano  Send Email to MCano     
Hello Gang,

Some times I fail to get air when I try. Other times I unexpectedely get air. It's much easier to get air when heading into the swell. However, watch out when going fast in a following sea. One minute your on water, the next your in the air with a 3-8 foot drop. In 13 years of flying in this manner, my Whaler has withstood the test. However, I do need to tighten all of my boat's fasteners periodically. And, I have my share of spider cracks in the gel coat. I also have to see my chiropractor on a regular basis. You can see some of my air shots on page 48 of Cetacea.

http://continuouswave.com/whaler/cetacea/cetaceaPage48.html

Regards,

Mario

vdbgroup posted 05-24-2002 06:51 PM ET (US)     Profile for vdbgroup  Send Email to vdbgroup     
Mario,

It looks like you are in prime waters for getting airborne. Thanks for referring me to your web page on Cetacea.

I might be a little crazier than you. As a youth we caught an 8 foot gator on a trotline and brought home for show and tell in my 15' jon boat.

You probably were not doing much wave hopping with those sharks in the bow.

Rick

vdbgroup posted 05-24-2002 07:32 PM ET (US)     Profile for vdbgroup  Send Email to vdbgroup     
Mario,

How well does your kicker motor do in chop?

The Gator was alive.

Steve Leone posted 05-29-2002 02:49 PM ET (US)     Profile for Steve Leone  Send Email to Steve Leone     
i just replaced a crankshaft on a Yamaha 225hp outboard. was a rental boat and the dude said he came off a wave airborne, the engine reved to about 6500-7500 rpm, it came down, prop grabbed, and the crank snapped just bellow the flywheel. i saw this on an optimax about a month ago als. he also twisted the prop shaft something fierce. i agree with Ponchee, the thing is overheating for lack of water during flight, steve out.
lhg posted 05-29-2002 06:25 PM ET (US)     Profile for lhg    
JimH has a picture, I think, of my 25 Outrage with air under it, but props still in the water. This was not my intention.

I have been told by my Merc mechanics that getting the props airborne on any outboard is a really bad situation. If they spin out of control, when they re-enter the water the prop bite will destroy the splines on the driveshaft, at the engine. Eventually, they get completely chewed up and you'll be in for a $1000 repair. Or worse, as Steve has described.

Bigshot posted 05-30-2002 10:05 AM ET (US)     Profile for Bigshot  Send Email to Bigshot     
No comments on getting air......ok be off the throttle when you hear it or pay the consequences which are many, starting with shearing that prop right off....been there, done that!

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