CD 25 smooth running engine options

[Ferryworker]

I have a 6 hp Tohatsu, I find pretty loud and rough. Will the 8hp Tohatsu fit? Even an older model might be an option.

[Carl Thunberg]

Welcome to the Board! I hate to see a post go un-answered for 4 days. I think the lack of response may be because you posted this in the Buy/Sell forum. Try posting the same question in the Cape Dorys forum. That is the main discussion forum. That said, I'll take a stab at it. Unfortunately, you're up against an acoustical chamber created by the engine in a well. You gain a clean transom, but you trade it for noise. My former CD25 was loud, too. It makes you highly motivated to cut the engine and sail. 8HP is a lot of horses for a CD25. It won't make you go any faster, and the added weight will make you squat in the water.

[Walter Hobbs]

Greetings,

In your situation do you require the full 6 HP? I don't own one but the reviews on the electric torqueedos have been good. That will get you the quiet but with limited range and power. Also will take a chunk out of your wallet.

I have the same Tohatsu as you, yes it is noisy. It is in a Sea Sprite 23 not quite as enclosed as your CD but I shut it off as soon as I can.


Yours, Walter

[mgphl52]

I concur with Walter regarding an electric motor... If you really want quiet but still have to motor in/out of slip or mooring, it'll be the quietest option and the lightest!
On my last CD25 I had a Nissn/Tohatsu 6hp but it spent far more time time on the cabin sole than in the well. Mostly because the marina had brackish water and I could generally sail in and out of my slip.
That was over 17 years ago... long before quality/strong electrics were available... if I was doing it again, I'd go electric.

[Ferryworker]

Thanks for the replies guys. I do require all the power i can get. I live on Deer Island New Brunswick Canada, we have a tremendous amount of tide in among the islands. I think a multi cylinder would be smother, but there is always the space consideration.

[casampson]

I too own a CD 25 with a 6 HP Tohatsu Sailpro motor. I found it extremely annoying at first, but the motor runs forever on very little gas and performs very well, so eventually I came to appreciate it. Overall it is an excellent choice. I usually run it with the lazarette cover open so that I can access the controls, but I ran it with the cover closed once and was surprised at how much quieter it was.

[Steve Laume]

"I do require all the power i can get. I live on Deer Island New Brunswick Canada, we have a tremendous amount of tide in among the islands".

Once again; more power will not make the boat move faster over the ground, against a foul current. You cannot push the boat past hull speed. It doesn't matter if the water is moving towards you or you are moving through still water. In a foul tidal situation, you will always need to subtract the speed of the current from your speed over the ground, no matter how much power you apply. Wind is is a different situation and more power will help, but not current.

I am not sure how wet it gets in the engine compartment but sound dampening would help with the noise. I did Raven's engine compartment and it made a huge difference. Even if you only did the underside of the cover it would make a significant difference. I hate the sound of the engine and have had to live with it for entire days when becalmed off shore. It is something I have learned to live with and always give a sigh of relief when I shut it down. The sound dampening material does help, Steve.

[jbenagh]

I usually run it with the lazarette cover open so that I can access the controls, but I ran it with the cover closed once and was surprised at how much quieter it was.

On my CD25 with the 6hp Tohatsu, someone (Carl?) put a deck plate so you could operate the throttle with the cover closed. It did make it much quieter.

I am not sure how wet it gets in the engine compartment but sound dampening would help with the noise.

Really wet if there's any kind of following waves.

Jeff

[bgephart]

What kind of sound dampening material is best, and how was it attached to the engine compartment cover on the CD 25?

Bob Gephart - Savannah