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Author Topic:   Prop on Dauntless 14' with 60 EFI
petert posted 05-04-2004 06:58 PM ET (US)   Profile for petert   Send Email to petert  

I just took ownership of a 1999 14 ' Dauntless with a new 60 HP Merc EFI.

While the boat planes with one person, it labours with two people and will NOT plane with three. Playing with the Trim etc seems to have no impact.

I was shipped the boat with a 14 x 10 1/4 Prop. The dealer is convinced that this is the correct prop, but is going to lend me another prop to try this weekend.

The prop he is lending will be 13 x 10 1/2 Prop.

My dealer who is a nice guy seems very concerned with the Maximum R.P.M. etc ...

I would appreciate any advice. I love the boat, but it plows through the water ...

It does not make sense to me that a 60 HP EFI cannot push a 14' boat.

Advice welcome ...

Thx. Peter

petert posted 05-04-2004 06:59 PM ET (US)     Profile for petert  Send Email to petert     

Sorry, I should have mentionned that I have to use an Aluminium prop as I am in rocky water.

Thx. Peter

Moe posted 05-04-2004 09:18 PM ET (US)     Profile for Moe  Send Email to Moe     
This is a follow-up to this thread from two weeks ago:

Peter, what was the highest rpm you were able to obtain trimming out with just you on board? This is important. What GPS speed was this, if you checked it?

Same questions with two people on board?

Where are the three people located when attempting to plane? Two at the helm and one on the cooler? Did you try two people on the bow cushion with you at the helm?

Was there any gear in the stern area when you are attempting to plane.

Is the motor always trimmed all the way down when you are attempting to plane?

That info will be a start.


Moe posted 05-04-2004 10:26 PM ET (US)     Profile for Moe  Send Email to Moe     
Oh yeah, another important question. There are five holes aligned vertically and spaced about 3/4" apart, center to center, in four locations on the motor's mount. Which of these five holes do the bolts go through?


petert posted 05-11-2004 06:43 PM ET (US)     Profile for petert  Send Email to petert     

The problem is fixed. The Marine made some changes:

i) Smaller prop - now revs at 6,200 with just me in the
boat. I will have to be a bit careful if there are no
other passengers, but it is worth it.

ii) Installed Doelfin

iii)A "Wedge" to help position the prop lower in the hole
trying to jump on plane.

What a difference! It feels like a different boat and I am thrilled. Not only does it now jump out of the water with one or two passengers. It now planes easily with 3-4 passengers and a load. It is also very fast once on plane.

Next time I am up I am picking up my backup prop and will provide the exact prop specs for those interested.

Thank you so much for your advice and interest.

Cheers. Peter

Moe posted 05-11-2004 06:53 PM ET (US)     Profile for Moe  Send Email to Moe     
Good deal, Peter! Make sure that Doel-Fin is running out of the water when you're up on plane at higher speeds.


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