CD 25 outboard

[Jules Minsky]

I purchased 1991 Yamaha 9.9 4-stroke long shaft for my 1981 CD 25 in San Diego only to discover that the motor is too large for the well(fore & aft). I do not want to chop away parts of the well and I want to be able to turn the engine for backing up. I am considering mounting the engine on a Garelick outboard bracket with a custom fit wooden wedge to fill in the space created by the transom sloping towards the bow. This would create a vertical surface on the transom where the bracket would attach to the boat. Any opinions about this plan.



JMinsky@aol.com

[Jon]

Hi Jules,

That sounds like a plan. I've got a pair of plywood spacers between my aluminum angles and my mounting board. This allows the motor to sit about an inch forward of where it otherwise would. I've also lowered my board a bit to get everything right. Spacing and shimming is common on these boats. With enough planning, you should be able to squeeze about 10 to 15 degrees of motor rotation within the well, depending on the motor's size. This will allow you to direct all of the reverse thrust under the port side of the hull, minimizing prop walk in reverse these boats are famous for.

Good Luck,
Jon
s/v Sovereign
CD-25 #625



ringj@mediaone.net

[Jon]

Jules,

Are you mounting the bracket outside on the transom itself, or in the well somehow?

Jon

[mike]

If you haven't done anything with it yet, you ought to return it and get a 5 hp. If it's a 5 hp 4 stroke you will have far more than enough power. If it's a 5 hp 2 strok,e you will have at least enough. We powered a 28.5', 8500#, 8'beam, 4'draft Pearson Triton for several years with a 2 cycle/stroke Nissan of 8 hp. At 2/3rds throttle it pushed the boat fine. We also used a 3 hp British SEagull for a while. It pushed it at close to hull speed. The 8 was clearly ample. And a 9.9 (especially a 4 stroke with all its power) is far, far more than you need on the CD25. Putting a smaller motor in the well would be aesthetically better and less of a waste of power. If yo ucan't take it back or find someone with a comparably new 5 hp to trade with, then the motor mount may be the only option. But they are ugly hanging on the back. Mike

g shaft for my 1981 CD 25 in San Diego only to discover that the motor is too large for the well(fore & aft). I do not want to chop away parts of the well and I want to be able to turn the engine for backing up. I am considering mounting the engine on a Garelick outboard bracket with a custom fit wooden wedge to fill in the space created by the transom sloping towards the bow. This would create a vertical surface on the transom where the bracket would attach to the boat. Any opinions about this plan.



michaelconniesmith@home.com

[Chris]

I have a Yamaha 2-stroke 8hp. Plenty of power. hull speed to windward at 20+ knots. fits in well nicely with room to turn. runs 100:1. little smoke.

I purchased 1991 Yamaha 9.9 4-stroke long shaft for my 1981 CD 25 in San Diego only to discover that the motor is too large for the well(fore & aft). I do not want to chop away parts of the well and I want to be able to turn the engine for backing up. I am considering mounting the engine on a Garelick outboard bracket with a custom fit wooden wedge to fill in the space created by the transom sloping towards the bow. This would create a vertical surface on the transom where the bracket would attach to the boat. Any opinions about this plan.

chris.jasonides@sappi-na.com

[Jon]

Jules,

I agree with Chris and Mike. I would sell off the 9.9. It's way too much power, and far too much weight to put that far aft. Then I would go take a look at the new 6hp 4 cycle 15" from Mercury. It has a 6 amp charger and through prop exhaust. The head is small, and the shaft is very thin, allowing plenty of rotation in the well.

Jon

[Tom Foley]

I have a 1984 Mariner 8 hp in my 1974 CD25. I am moored about 3 miles up a swift river and I need the power to return to my mooring when the tide is going out: It does the job very well. I recently saw a posting where someone put a 15 hp IN a CD25. They frequently crossed strong currants and also needed th power. Suggest you search this web site for other similar situations before you make any decisions.
Good luck!
Tom
Kennebunk, Maine I

CD 25 in San Diego only to discover that the motor is too large for the well(fore & aft). I do not want to chop away parts of the well and I want to be able to turn the engine for backing up. I am considering mounting the engine on a Garelick outboard bracket with a custom fit wooden wedge to fill in the space created by the transom sloping towards the bow. This would create a vertical surface on the transom where the bracket would attach to the boat. Any opinions about this plan.



alewifehouse@mainecoast.net

[Rene']

Hi Jules,

That sounds like a plan. I've got a pair of plywood spacers between my aluminum angles and my mounting board. This allows the motor to sit about an inch forward of where it otherwise would. I've also lowered my board a bit to get everything right. Spacing and shimming is common on these boats. With enough planning, you should be able to squeeze about 10 to 15 degrees of motor rotation within the well, depending on the motor's size. This will allow you to direct all of the reverse thrust under the port side of the hull, minimizing prop walk in reverse these boats are famous for.

Good Luck,
Jon
s/v Sovereign
CD-25 #625

We have a 6Hp Johnson that was mounted in the well. It wopuld smoke and stall if we were motoring down wind. We had to have the hatch open at all times while motoring due to the exhaust choking out the motor.
We are considering mounting the motor outboard,ugh! It will look ugly, but the reduction in drag and errosion is almost justifiable enough to make it passable.
We purchased a motor mount from West Marine that tilts to fit your transom so you don't need the wedge. Its not a pretty setup, but it works well.



rflamore@yahoo.com

[eric]

I got caught out in 50 knots of wind two saturdays ago in Allia. I watched a Friendship Sloop sink after he jib wouldn't come down and her engine was not strong enough to keep her headed into the squall.

I had Allia running full throttle with 9.9 horsepower. If I had 5 or 6 Hp I would have been in trouble. I'm glad to have the 9.9

Jules,

I agree with Chris and Mike. I would sell off the 9.9. It's way too much power, and far too much weight to put that far aft. Then I would go take a look at the new 6hp 4 cycle 15" from Mercury. It has a 6 amp charger and through prop exhaust. The head is small, and the shaft is very thin, allowing plenty of rotation in the well.

Jon

[bill willis]

I got caught out in 50 knots of wind two saturdays ago in Allia. I watched a Friendship Sloop sink after he jib wouldn't come down and her engine was not strong enough to keep her headed into the squall.

I had Allia running full throttle with 9.9 horsepower. If I had 5 or 6 Hp I would have been in trouble. I'm glad to have the 9.9

Eric,
Is your 9.9hp a 2 or 4 stroke?

Jules,

I agree with Chris and Mike. I would sell off the 9.9. It's way too much power, and far too much weight to put that far aft. Then I would go take a look at the new 6hp 4 cycle 15" from Mercury. It has a 6 amp charger and through prop exhaust. The head is small, and the shaft is very thin, allowing plenty of rotation in the well.

Jon

wawillis@toad.net

[eric]

It's 2 stroke. I was in 50 knots of wind with a heavy swell

I got caught out in 50 knots of wind two saturdays ago in Allia. I watched a Friendship Sloop sink after he jib wouldn't come down and her engine was not strong enough to keep her headed into the squall.

I had Allia running full throttle with 9.9 horsepower. If I had 5 or 6 Hp I would have been in trouble. I'm glad to have the 9.9

Eric,
Is your 9.9hp a 2 or 4 stroke?

Jules,

I agree with Chris and Mike. I would sell off the 9.9. It's way too much power, and far too much weight to put that far aft. Then I would go take a look at the new 6hp 4 cycle 15" from Mercury. It has a 6 amp charger and through prop exhaust. The head is small, and the shaft is very thin, allowing plenty of rotation in the well.

Jon

woodman_eric@emc.com

[bill willis]

It's 2 stroke. I was in 50 knots of wind with a heavy swell

That's what I thought. The original poster, Jules, said he had a 4 stroke 9.9hp Yamaha- a much larger and heavier outboard than 2 stroke 9.9hps. The problem was ...how would he get the larger motor in an '81 Cd25 motor well without significant alterations.
Also... horse power ratings can be deceptive as a means for evaluating performance. A motor with a 'sail prop' will give needed performance (thrust) with less rpms and less hp. Finally, did you consider heaving to? Sailing skills are as important as the motor in a big blow.
Happy sails,
bill CD25 Sadie

I got caught out in 50 knots of wind two saturdays ago in Allia. I watched a Friendship Sloop sink after he jib wouldn't come down and her engine was not strong enough to keep her headed into the squall.

I had Allia running full throttle with 9.9 horsepower. If I had 5 or 6 Hp I would have been in trouble. I'm glad to have the 9.9

Eric,
Is your 9.9hp a 2 or 4 stroke?

[eric]

I missed that his was a 4-stroke. I do have a high-thrust "sail" prop. IN all but the harshest condidions it's too much. But preparing for all but the harshest conditions seems like a bad idea.

Heaving too was not an option in this case. The sails were already down and I was in tight quarters with rocks all around. I could not afford to stop to raise the main and unfurl the jib. I probably would have ended up in the H2O if I had, anyway. Waves were breaking across Allia's bow.

Besides, the time it would have taken to heave to would have been enough to dump me into House Island or onto Whaleback Ledge. I simply needed enough power to keep headway. There were about 15 other sailboats within a mile. All were faced with the same problem. It went from 10 knots out of the SE to 50 knots out of the NW in a matter of 2 seconds.

Sailing skills are of course essential. If you are implying that I lack them because I'd rather have a powerful engine that can handle what nature throws at me than have an underpowered engine, I'd have to wonder whether your perspective might be a bit out of line. I believe a skipper should handle each situation with the approach that is safest, not the one that will best show off his or her sailing skills.

When you have a 9.9 HP and 2-stroke with a high-thrust prop, you can maintain headway in 50 knots and 6-foot seas. You can't with much less than that and will be forced to heave too.

To the main point: Make sure your engine has enough power to handle the worst-case. Not just puttering from the slip to the mouth of the harbor.

E

It's 2 stroke. I was in 50 knots of wind with a heavy swell

That's what I thought. The original poster, Jules, said he had a 4 stroke 9.9hp Yamaha- a much larger and heavier outboard than 2 stroke 9.9hps. The problem was ...how would he get the larger motor in an '81 Cd25 motor well without significant alterations.
Also... horse power ratings can be deceptive as a means for evaluating performance. A motor with a 'sail prop' will give needed performance (thrust) with less rpms and less hp. Finally, did you consider heaving to? Sailing skills are as important as the motor in a big blow.
Happy sails,
bill CD25 Sadie

Eric,
Is your 9.9hp a 2 or 4 stroke?

woodman_eric@emc.com

[bill w.]

I missed that his was a 4-stroke. I do have a high-thrust "sail" prop. IN all but the harshest condidions it's too much. But preparing for all but the harshest conditions seems like a bad idea.

Heaving too was not an option in this case. The sails were already down and I was in tight quarters with rocks all around. I could not afford to stop to raise the main and unfurl the jib. I probably would have ended up in the H2O if I had, anyway. Waves were breaking across Allia's bow.

Besides, the time it would have taken to heave to would have been enough to dump me into House Island or onto Whaleback Ledge. I simply needed enough power to keep headway. There were about 15 other sailboats within a mile. All were faced with the same problem. It went from 10 knots out of the SE to 50 knots out of the NW in a matter of 2 seconds.

Sailing skills are of course essential. If you are implying that I lack them because I'd rather have a powerful engine that can handle what nature throws at me than have an underpowered engine, I'd have to wonder whether your perspective might be a bit out of line. I believe a skipper should handle each situation with the approach that is safest, not the one that will best show off his or her sailing skills.

When you have a 9.9 HP and 2-stroke with a high-thrust prop, you can maintain headway in 50 knots and 6-foot seas. You can't with much less than that and will be forced to heave too.

To the main point: Make sure your engine has enough power to handle the worst-case. Not just puttering from the slip to the mouth of the harbor.

E

Eric,
My apologies if you thought I was questioning your or anyone else's sailing skills. I wasn't. Nor was I promoting a macho or show-off attitude.
I congradulate you on escaping what sounded like a very dangerous situation. I couldn't agree more when you say, "I believe a skipper should handle each situation with the approach that is safest..." when I said that sailing skills are as important as the motor, I was making essentially the same point. Motors in sailboats are auxillary power and one can become overconfident in their use. If you have a big outboard, that's great, but what if you don't? What if you're out there with a 5hp or a 6hp? Or... what if you're in the situation you described and the 9.9hp won't start, or conks out?
A skipper should know how to handle each situation with the means available...and pray that all turns out safely.
Peace,
bill

It's 2 stroke. I was in 50 knots of wind with a heavy swell

That's what I thought. The original poster, Jules, said he had a 4 stroke 9.9hp Yamaha- a much larger and heavier outboard than 2 stroke 9.9hps. The problem was ...how would he get the larger motor in an '81 Cd25 motor well without significant alterations.
Also... horse power ratings can be deceptive as a means for evaluating performance. A motor with a 'sail prop' will give needed performance (thrust) with less rpms and less hp. Finally, did you consider heaving to? Sailing skills are as important as the motor in a big blow.
Happy sails,
bill CD25 Sadie

wawillis@toad.net