Time has come to replace the outboard on my 240. I'm wondering if anyone has any thoughts on the 20" shaft vs. a 25"? Thanks for any advice you can give.
Outboard shaft length on 240
- Thread starter jblersch
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On my 25.5 I have a 25". I am told that a 20" is fine in still water. As soon as you hit waves and wake, the prop comes out of the water too much. I am a novice and therefore am easily influenced as I am eager to learn. It may or may not be accurate.
20" is OK 25" is Better
On a lake Ok is probably good enough. I added an extension to make mine a 25" shaft.
All that being said I'd probably buy a 25 if the difference is not too great. An added benifit to the change from 20" to 25" is it runs quieter. Probably not so much an issue with the newer 4 strokes.
On a lake Ok is probably good enough. I added an extension to make mine a 25" shaft.
All that being said I'd probably buy a 25 if the difference is not too great. An added benifit to the change from 20" to 25" is it runs quieter. Probably not so much an issue with the newer 4 strokes.
When the going gets rough a shorter shaft will let you down.....not a peaceful thought. Spring for the long shaft. I had a long shaft on my old 240 and never had any issues. There's been a lot of discussion about what hp to go with and my experience with that boat was that a heavy 9 or 10hp 4stroke will cause a serious list to starboard. I'd say 8hp max and 6hp min. After all, it's not a powerboat.
For just a few bucks more I'd defiantly make sure you get one with an alternator too. An effort to request a prop sized for lower speeds and high thrust will add to your joy and will be better matched for a sailboat vs a bass boat type app.
Good luck, Mike
For just a few bucks more I'd defiantly make sure you get one with an alternator too. An effort to request a prop sized for lower speeds and high thrust will add to your joy and will be better matched for a sailboat vs a bass boat type app.
Good luck, Mike
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Just for clarification
Motors come in three lengths:
15" short
20" long
25" extra long
The measurement is from the top of the bracket where it sits on the transom or bracket to the cavitation plate a 15" shaft will not work at all on a 240.
Motors come in three lengths:
15" short
20" long
25" extra long
The measurement is from the top of the bracket where it sits on the transom or bracket to the cavitation plate a 15" shaft will not work at all on a 240.
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