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  Long shaft motor on a short shaft 13?

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Author Topic:   Long shaft motor on a short shaft 13?
Vibroluxe posted 08-07-2000 11:34 PM ET (US)   Profile for Vibroluxe   Send Email to Vibroluxe  
I came across a 25 Hp Mercury long shaft that I'd like to put on my 13' Sport. The friend who's selling it said it could use it for a while to see if I like it and want to buy it. Since I am not 100% certain that I'll be purchasing this motor, I don't want to go buying jack plates and drilling holes in the transom to raise the motor the 5" it needs so that the prop will be at the recommended height. My question is…. What are the negatives on running a long shaft on this boat? I'm more concerned about issues like safety than I am about performance so if anyone knows of a potential safety issue, I would appreciate them letting me know before I make myself extinct… Thanks in advance - John
Clark Roberts posted 08-08-2000 07:34 AM ET (US)     Profile for Clark Roberts  Send Email to Clark Roberts     
John, negatives are: loss of performance and most likely handling; loss of efficiency (fuel mileage); and most off all, increased draft! If you operate in shallow water you will be hitting botton often... and I don't think the long shaft engines with remote steering have shallow water drive! Personally, I wouldn't consider putting a 20" shaft motor on a 15" transom... happy Whalin'.... clark... Spruce Creek Navy

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