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Long shaft on the 13' cut-out transom
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| Ol Mucky |
Posted on 06/24/11 - 7:28 AM
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Joined: 04/20/11
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What are the minuses of this set-up? I have a line on a very economical 25hp older long shaft. I just want to use the boat for crabbing, shrimping, island hop, etc getting from point A to B in a fairly decent time yet remain safe.
Any thoughts on this set-up
Thanks
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| Tom W Clark |
Posted on 06/24/11 - 7:41 AM
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- Slower acceleration.
- Slower cruising speed.
- Slower top speed.
- Diminished fuel economy.
- More bow rise on acceleration.
- Greater chance of porpoising.
- Tremendous amounts of spray.
- Greater chance of running aground.
- Greater chance of scraping your motor at the launch ramp.
- Loss of space in your garage with the motor tilted up.
But other than that, not much.
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| tom blinstrub |
Posted on 06/24/11 - 8:17 AM
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I made the mistake of mounting a 1976 mercury 50 hp longshaft on a older shortshaft 13' Whaler. I got about 1000 feet and looked back at the engine which was throwing a huge amount of spray and to my surprise it was coming over the transom and filling up the back of the boat. I must of had 30 gallons of water back there in that short time. My brother made me a steel plate to raise the transom. The problem is the bigger engines get real fat above the cavitation plate. I you find a small outboard like a 10 hp it might work if it is thin above the cavitation plate. I run a 8 hp tohatsu longshaft on my shortshaft 13' whaler now and it throws very little spray when planning because the motor is so thin above the cavitation plate. Make sure you try it on your boat before you buy it. You could also raise the transom with an adapter.
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| Sax416 |
Posted on 06/24/11 - 9:08 AM
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My brother had bought a longshaft motor for our thirteen when our shortshaft crapped the bed. the only thing we ever considered at the time was our shallow water cruising would suffer. To be honest I didn't know it was a sin until I started visiting these websites. Its not ideal but it works. I just bought the kentfab to bring the transom up so I can run this thing at it's optimum performance level. My brother thinks I'm nuts for spending the $500 for the bracket.
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| Tom W Clark |
Posted on 06/24/11 - 9:31 AM
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I think "a very economical 25hp older long shaft" is not really economical at all if you have to spend $500 to adapt it to an old 15" transom Whaler.
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| Sax416 |
Posted on 06/24/11 - 10:55 AM
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True point. The ls can be used as is with less than optimal performance but it would make more sense from an economical standpoint to search a little longer for a ss. For me I already had the ls so I wasn't gonna buy a used ss. I want a new ls in the near future so I'll eventually need the bracket anyway. Plus it allowed me to ditch the standoff bracket for the steering.
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| Ol Mucky |
Posted on 06/24/11 - 11:47 AM
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Posts: 9
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Joined: 04/20/11
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Tom W Clark wrote:
- Slower acceleration.
- Slower cruising speed.
- Slower top speed.
- Diminished fuel economy.
- More bow rise on acceleration.
- Greater chance of porpoising.
- Tremendous amounts of spray.
- Greater chance of running aground.
- Greater chance of scraping your motor at the launch ramp.
- Loss of space in your garage with the motor tilted up.
But other than that, not much.
So your saying its ok ;-)
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