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Old 16-10-2015, 13:00   #16
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Re: Outboard lower unit length issue. Help! (photos)

I had a C&C25 with the same problem.

Simple answer...stay in the cockpit.

If the wind and waves were big enough to get the prop out of the water, I was much better off sailing rather than using the engine anyway. It never seemed to be a problem downwind. However, there was always a very steep chop at the entrance to my marina, POH in Kingston. The wife would hold the children tight, and I would steer into the harbour...the engine screaming as the prop caught air, and the bow would plunge over the next wave. Very exciting for about 2 minutes almost every time the wind was up. Finally, the wife insisted we change marinas. Too bad though, I had almost perfected sailing into the harbour, and right into my slip.
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Old 16-10-2015, 13:29   #17
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Re: Outboard lower unit length issue. Help! (photos)

I went back and looked at the pic. I'm not sure you shouldn't be looking at redistributing weight It looks like you should have adequate length. It might save some money? Not to sound trite but if seas are that high, it is a sail boat and not meant to use the OB for much more than docking?
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Old 16-10-2015, 17:32   #18
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Re: Outboard lower unit length issue. Help! (photos)

Thanks so much for all the replies. The first hand knowledge from this forum community is really an invaluable resource. Once we get the boat in the ocean we'll see how she does, but for now we'll leave the outboard the way she is (exhaust screaming and all) we'll try to stay in the cockpit and see how she does.
Thanks again,
S
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Old 03-11-2015, 15:32   #19
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Re: Outboard lower unit length issue. Help! (photos)

I have an Oday 25 and we just replaced our long shaft Mercury 9.9 2 cycle which looked exactly like your set up. Ours was on a retractable mount so it sat a bit lower and could be tilted up out of the water when not in use. A retracible mount allows some water depth adjustment

1. 9.9 is plently for a 25 foot boat, and that looks like a 20" long shaft
2. The exhaust being above water has no effect except noise
3. Its only important that the cooling water keeps coming out.
4. You should not have a problem with this set up unless the propeller comes out of the water when driving into waves. It appears your set up should be OK for up to a 3' chop.
5. Don't put a lot of money into an older 2 cycle. Save it for a newer 4 cycle with a bigger propeller and a extra long 25" shaft. We just replaced the 9.9 2 cycle with a 6 HP extra long shaft (25") and it will drive the boat even in a 4' chop without coming out of the water. In fact it works better than the 9.9 did except not quite as fast in clam water.

I see by the preceding posts that you've been getting good advice. Hang in there
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Old 03-11-2015, 15:47   #20
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Re: Outboard lower unit length issue. Help! (photos)

Quote:
Originally Posted by sv.cambio View Post
Here is the pic.
Looks pretty deep to me. It's just the nature of the beast and I'm not sure you can do much about it.
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Old 05-11-2015, 04:51   #21
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Re: Outboard lower unit length issue. Help! (photos)

Thanks for all the great advice. I feel a lot better about the lower unit length.
We're splashing next week. I'll let you all know how it turns out.
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Old 05-11-2015, 06:34   #22
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Re: Outboard lower unit length issue. Help! (photos)

These Power Thruster............."Accelerate your Outboard" - Power Thruster Outboard Accelerator really seem to work well. We have used them on two boats and they do a great job reducing ventilation. Maybe an inexpensive option? And if you end up getting a new motor you can unbolt the power thruster and reinstall on the new motor.
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