Motor shaft length

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Motor shaft length

Postby Fernley » Sun Apr 17, 2011 10:58 am

Hello all,

I have a '68 DS I and I am interested in adding a motor this year.

My question is how long of a shaft does this motor need to have?

Specifically I am looking at a 1988 Yamaha 3HP "long shaft" (20"). I'm wondering if that is appropriate.

Is it too long? Will a standard shaft be long enough?

Thanks in advance.
Ed
Ed & Lori
Fernley
 
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Location: Upstate NY

Postby Alan » Sun Apr 17, 2011 11:57 am

Here's a thread on the topic:

http://forum.daysailer.org/forum/viewtopic.php?t=3522

All I can tell you from my own experience is that 42 inches (on a trolling motor mounted on top of the transom on a DSII) is longer than you need.
Alan
 
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Postby Peterw11 » Sun Apr 17, 2011 8:24 pm

I've got an Evinrude "long shaft" 4 hp on my DS. From what I understand, on the old OMC built outboards (Evinrude and Johnson) a long shaft is 22" and a standard shaft is 18".

My longshaft is fine for lake and ocean sailing. If lake sailing only, I'd guess the shortshaft would be Ok, given the shallow freeboard of the DS hull.

I think the Yamaha should be sufficient.

Hope this helps.
Peterw11
 
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Postby Fernley » Sun Apr 17, 2011 11:29 pm

Thanks.... I hit the referred page and did some measurements on my boat as well.

Seems that the 20" shaft on the motor I'm looking at will be more than sufficient.

Thank you for your input.
Ed & Lori
Fernley
 
Posts: 8
Joined: Wed Jul 28, 2010 7:47 am
Location: Upstate NY


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