[Public-list] Engine Question

[Albert Fleury]

Mike , Richard and Stephen
Thank you for the information. I will investigate the transmission ratio and 
contact Michigan prop
Al Fleury #131


>From: "Mike Lehman" <sail_505 at hotmail.com>
>Reply-To: Alberg 30 Public List -- open to all <public-list at alberg30.org>
>To: public-list at alberg30.org
>Subject: RE: [Public-list] Engine Question
>Date: Wed, 21 Sep 2005 13:02:55 -0400
>
>I have a Universal M4-30 [4 cyl 30 HP]. I do not what prop you would need, 
>but suspect that it would be different from mine since the engine are so 
>different. I got help from Michigan Wheel and they got it right on the 
>first try. You can submit your information to them online by going to...
>
>http://www.miwheel.com/MIWheel/propit/main.htm
>
>
>
>Mike Lehman
>~~~_/)_/)~~_/)~~~
>
>
>
>
>----Original Message Follows----
>From: "Albert Fleury" <affleury at hotmail.com>
>Reply-To: Alberg 30 Public List -- open to all <public-list at alberg30.org>
>To: public-list at alberg30.org
>Subject: RE: [Public-list] Engine Question
>Date: Wed, 21 Sep 2005 12:05:24 -0400
>
>Mike,
>What engine do you have? I have an 11 hp Vetus with a 2 blade prop and 
>would like to switch to a 3 blade for improved cruise speed and backing 
>ability and wonder if the 12 inch x 12 would work well for me?
>
>Al Fleury
># 131 "Moonshadow"
>
>
>>From: "Mike Lehman" <sail_505 at hotmail.com>
>>Reply-To: Alberg 30 Public List -- open to all <public-list at alberg30.org>
>>To: public-list at alberg30.org
>>Subject: RE: [Public-list] Engine Question
>>Date: Tue, 20 Sep 2005 16:37:42 -0400
>>
>>Jon,
>>
>>I have a 12"x12 3-blade on my boat and it works fine. 12" is better than 
>>13 on the A30 because of the aperature opening. With 12" you reduce the 
>>amount of prop wash and noise. As for the pitch, that should be determined 
>>by the power curve of the engine, shape of the hull, displacement of the 
>>vessel - -lot's of factors. A test is to see if you can get max rated RPM 
>>for the engine when it is in the water. You will never run the engine at 
>>that speed but you should be able to reach it [or close to it]. You 
>>cruising speed with a diesel is generally around 75% of full throttle. 
>>Many people over-prop and 'labor' their engines with too low RPM which 
>>reduces power and effiency. Hope this helps
>>
>>BTW, The prop can be re-pitched for fine tuning but there are limits as to 
>>how much. If I remember correctly it is 2" in either direction so....a 
>>12x13 can be repitched to 12x11 or 12x15
>>
>>
>>
>>Mike Lehman
>>~~~_/)_/)~~_/)~~~
>>
>>
>>
>>
>>----Original Message Follows----
>>From: "Jon Budington" <jon at globalprintinginc.com>
>>Reply-To: Alberg 30 Public List -- open to all <public-list at alberg30.org>
>>To: "Alberg 30 Public List -- open to all" <public-list at alberg30.org>
>>Subject: RE: [Public-list] Engine Question
>>Date: Tue, 20 Sep 2005 16:26:37 -0400
>>
>>Stephen,
>>
>>Just checked my notes, and the prop specified is a 12" 13 pitch.  Any
>>thoughts on that size?
>>
>>Jon
>>
>>-----Original Message-----
>>From: public-list-bounces at alberg30.org
>>[mailto:public-list-bounces at alberg30.org]On Behalf Of sousa, stephen
>>(ENG)
>>Sent: Monday, September 19, 2005 2:43 PM
>>To: 'Alberg 30 Public List -- open to all'
>>Subject: RE: [Public-list] Engine Question
>>
>>
>>Jon,
>>
>>I have the same installation in #114. They made Z-Brackets which the motor
>>mounts are mounted. Which Yanmar are you installing in the Alberg? You
>>should verify that they are providing a new propeller with the 
>>installation,
>>the Campbell which is a 12 or 13 X 7 pitch will not work well with the
>>Yanmar.
>>
>>Stephen
>>
>>-----Original Message-----
>>From: public-list-bounces at alberg30.org
>>[mailto:public-list-bounces at alberg30.org] On Behalf Of Jon Budington
>>Sent: Monday, September 19, 2005 2:28 PM
>>To: Alberg 30 Public List -- open to all
>>Subject: [Public-list] Engine Question
>>
>>
>>I am in the process of replacing my Gray Marine with a new Yanmar.  The 
>>work
>>is being done by a local engine service company in Annapolis.  I went to
>>check on the progress of the job this weekend and was surprised to see the
>>new engine laying on the old Gray beds.  The new engine is narrower, and 
>>the
>>mounts do not line up.  To compensate, the mechanic manufactured plates to
>>bolt to the old beds - the new engine mounts are bolted to the plates.  
>>Does
>>this sound correct?
>>
>>Thanks,
>>
>>Jon Budington
>>Nimble #67
>>
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>
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