[Public-List] outboards

Fri May 8 10:40:16 PDT 2009

The thing will hobby horse and the outboard will be jumping in and out of 
the water like a son of a gun in any kind of waves

Don't do it my friend

ATB

JB


----- Original Message ----- 
From: "Gordon Laco" <mainstay at csolve.net>
To: "Alberg 30 Public List -- open to all" <public-list at lists.alberg30.org>
Sent: Friday, May 08, 2009 1:38 PM
Subject: Re: [Public-List] outboards


> Hello gang -
>
> Don is right about all that... And I would add that even with the hatch
> open, the engine will not be getting enough clean air.  Nor will you!
>
> I know a boat whose owner was driven to try fitting a blower to direct air
> to the engine - that was moderately effective but they were still not
> getting full power from the outboard, and the complexity of the jury rigs
> that were accumulating to make the laz mounted OB work - and it still 
> didn't
> really work, made the whole thing dissapointing.
>
>
> G
>
>
> On 5/8/09 1:27 PM, "Don Campbell" <dk.campbell at sympatico.ca> wrote:
>
>> Hi John;
>>   This is not meant to denegrate your ideas of changing the lazarette
>> because that is always a possibility. Be aware that changing the
>> lazarette is not a just piece of cake or without compromises.
>>    The Alberg 22 has the outboard in the lazarette and there are
>> problems there too. I have had  first hand personal experience with two
>> of these.
>>    First, the controls are not much different for availability from
>> what you describe, particularly the starting pull cord. The choke is
>> always awkward to reach because it is in, under and around things with a
>> lip on the laz., and the gear shift is not much better. It never seems
>> to be a straight pull on the cord for starters,  regardless of how the
>> cord lines up with the holes cut for the purpose. Knuckles banging on
>> tillers is a given.
>>   Then there is the problem of having a watertight bulkhead between
>> the lazarette and the bilge because now you have the bottom of the boat
>> open to water ingress. We have found that the worst part is that if one
>> has controls for the motor running through to the cockpit, then those
>> conduits must also be leak proof to the bilge,  to avoid water coming in
>> when the boat is sailing on a heel. This water in at these times can
>> fill the bilge in only a few minutes if you really get going and bring
>> in water under some pressure ( see below). I have managed to get more
>> than 20 imperial  gallons into a AL22 within 10 minutes on a really
>> sprightly breeze and about 20 degrees of heel. That is an extra crew
>> member sloshing in the bilge and that one is not wanted when a crew of
>> three is about right for this boat! The worst leaks are at the deck
>> joint and the control  conduits,  including the starter cutout, which
>> becomes the third place for leaks back here. Wires for electric starters
>> need to get into the boat as opposed to into the cockpit so waterproof
>> is with some technicalities. Just getting the shape of the bulkhead into
>> the position of the front of the lazarette is difficult and the more
>> pieces it takes, the less strong it will be. Glassing and manipulating
>> pieces of wetted out fabric is not easy either, especially the corners
>> at the toe rail. Been there, done that !
>>    The possibilities of reversing the engine with a 180 turn do not
>> exist because there is not enough room in the laz. at the back to take
>> the height of the front of the motor facing backwards,  particularly the
>> steering arm and fuel control system as it is usually at right angles to
>> the normal, down and forward position. If it is folded right  back at
>> the 180 position, then reaching it and using the gearing at that angle
>> for fuel controls gets to be a problem..
>>   There is only one currently produced motor that will fit the laz of
>> the AL22 and that is the Nissan 9.9 two stroke. One cannot fix or lock
>> the position of the turning mechanism on this motor either so it will
>> wander with vibrations when running. None of the Tohatsu models (Mercs
>> and Yamaha) will fit and have the lid close. Four stroke engines have
>> really big cowls to the prop and so none of them fit the hole size.
>> After that, we are back to trying to maintain old motors and you may as
>> well work on an A4 as an old Evinrude or Johnson. Most of the smaller
>> outboards do not have electric starters either. It is available on the
>> Nissan 9.9 2 stroke.
>>   Once underway, the stern dips and then the back of the cut-out for
>> the prop shaft is often under water. That then fills the laz with water
>> under pressure from forward motion  and really slows progress when
>> sailing or motoring. Waves don't help because they will often surge aft
>> against forward velocities. You need crew on the bow to level the boat
>> to help in solving this one.
>>   One more major  last thing. Under power, there is not enough airflow
>> through the boat,  and exhaust possibilities, even with the exhaust
>> through the prop, to allow the motor to run and provide enough clean
>> oxygen for the motor without the laz. lid open. Therefore, you get both
>> all the the noise reflected forward from and some fumes back up through
>> the open laz. lid. This will be more noise and fumes than you now have
>> with the motor down and aft of the transom.
>>   Oh and did I mention that there are not many small motors that will
>> give you a reasonable prop pitch for this mass! These small obs were
>> designed and built for max 16 foot woodies and rubber rafts, so 1000 lb
>> loads not 10, 000 lbs.
>>
>> Don
>> #528
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