Twin 20"s on a CD-16?

J

jhayes1068

New member
This subject has most likely been covered at some time on the C-Brats site, but, I'll ask the question since I've seen no recent post on this particular boat/motor combination. I'm still trying to determine just what boat/motor combination to buy. After looking at used CD-16's and 19's I think I can be happy with a CD-16 as long as I can keep the total weight of the boat as light as possible. Since a used CD-16 configured the way I want it, is either not on the market, or, some that are close are way out of line price wise according to N.A.D.A. Boat Values. I'm now thinking about the possibility of buying a new standard CD-16 Cruiser with the only options of 2 electric windshield wipers, bow rail, and 2nd battery w/ switch. Then trailering it home and build up the boat with the systems I want to add. My question is: Is there room to power the boat with twin 20 HP 4 stroke motors given the space for throttles and control cables? If so, I can hang 2 Yamaha 20 HP 4 stroke motors for a total weight of 230 Lbs and will not require a kicker. If I hang a Yamaha 40 HP 4 stroke and a 8 HP kicker, the total weight is 297 Lbs. The 230 lb weight is the lightest I've found to get at least 40 HP and not have to hang a kicker. Thanks, Jim
 
Without getting too elaborate , a 50 and a 3.5 to 6 HP kicker will be the better setup. Better resale ,far better performance . If twin 20s were practical , folks would be doing it.

NADA and C Dory do not live in the same world . NADA is the regular guy's boat world . You are different.C Dorys are different.
Marc
 
That is my plan when I have to repower! Twin 25's :smilep probably (Merc's). 4 stroke of course. I will re-evaluate the best option when the time comes. Personally I have used Mercury, Honda, Yamaha, and Tahatsu over the years with various hulls. As long as I kept the maintenance up I had no problems.

2-12 gallon tanks and battery weight moved mid-ship under the seats. Fuel consumption will go up from about 7 (currently) to 4.5 mpg. But with my lowrance fuel flow guage, I will be able to run optimum just like I do now. Twins has a trade off. Maximum safety with twins vs rearanging the weight and limiting the amount I try and pack into every crevis. The longer I boat the more I learn that less is best. Backups are great, but sometimes backup backups can be a little redundent. :wink:

The other consideration of range might be the deal killer for you. A 100 mile outing would be extra extreme for me. Also down here on the Gulf Coast, fuel can be found within at the most 12 miles any direction (except due south of the barrier islands).
 
Totally agree with the NADA value issue of the C Dory. Just like when you sell a piece of property the relator will tell you "Location, Location, Location" This is very true with our C Dory's.

Their location is our Moorings, Slips, Docks, and Trailers. And if you plan on moving my C Dory to your Location, you can forget about NADA. Most of us will tell you "nada chance at that price!" :D
 
Don't want to hijack your post but;

Marc, if I do get to the point of repowering I would like to give you a call. Don't get me wrong there are a lot of great "Dealers" over here on the MS Coast, but I would only trust my C Dory to someone who is very use to the quirks of the "Breed" (balsa core).
 
I'd rather have a 50hp rather than two 20s. The CD16 is pretty easy to maneuver with a single. I concur with the comment about NADA. Just ignore it, because it doesn't have anything to do with reality in the C-dory world.
 
Here's quirky for ya , Why not 20X2HP Hondas ? @ 540 Lbs and 20 X .25 gallon internal tanks to fill it might be a little impractical, but you would have a number of redundancy and safety solutions available . You could mount them in a ring around the entire boat and control them with microprocessor controlled fly by wire software like the Zeus or IPS or NASA joystick style configuration with discreet ,integrated 360 degree steering per motor for maneuverability , might be costly , but interesting ................
maybe not.....
Marc
 
This summer we saw a US Customs and Border Patrol boat with FOUR 350hp outboards. The boat was just a smaller aluminum "coast guard" looking boat. Hate to outrun that boat.
 
There is something to be said for the duplicity of double redundancy. Twin 20's on a 16, hmmmmmmm, even I might draw the line there, (and some of you know how well I like my twins), but on a 16 :roll: Think I'd do a single, and .....oh yeah, 2 oars and some oar locks. (Maybe a third oar lock on the transom for sculling :wink

Harvey
SleepyC :moon
 
Captains Cat":3o4tqg1u said:
Why not 4 10's? Someone earlier posted what I think was a spoof picture of that. Anyone know where it is?

Charlie
Click to expand...

Couldn't find the picture after a short look, but Matt Gurnsey was the culprit. And it was not entirely a spoof - i.e, not a photoshop job. I saw the boat, in person, at Matt's place.

I'm sure Joe or someone will dig the picture up.
 
Thinking out loud!

Mercury
50 HP EFI
HP/Kw @ Prop 50 / 37
Displacement (L / CID) 60.8 / 995
Bore and Stroke (in / mm) 2.56 x 2.95in 65 x 75mm
Gearcase Ratio 1.83:1
Dry Weight * Lightest model available 247lbs / 112kg

Mercury
25 HP EFI
HP/Kw @ Prop 25 / 18.6
Displacement (L / CID) 32.1 / 526
Bore and Stroke (in / mm) 2.40 x 2.36in 61 x 60mm
Gearcase Ratio 1.92:1
Dry Weight * Lightest model available 157lbs / 71kg (314 lbs for 2 motors)
67 lbs total weight increase using 2 motors

These are the same facts/data that I will run when making my decision as to run twins or not. Why would it make a difference if it is a 16, 19, 22, or etc? If the justifications for running twins on a simi-displacement hull are throughly evaluated it comes down to the extra weight versus the extra expenditure. In the above example 67 extra pounds, twice the maintenance, and a 25% reduction in fuel efficiency. But, 100% assurance the I can limp back safely with a single 25 HP versus a 3-8 HP kicker. As the cliche goes "size don't matter", the decission isn't about practicality or economics. It is about safety and peace of mind.

Let’s look at a Gulf Coast example I lived through in a 38 ft Jefferson Lafitte Cruiser. Beautiful day, sunny AM, getting overcast but still beautiful. No weather on the horizon, No weather on radar, and then you get your but kicked by the thunder storm blowing 35-40 that just built up right over head! Completely over your head and and off your radar (pun intended). Nearly instant 6-8 foot of white capping chop in 20 feet of water and 100 feet off the northern shore of a popular bay. 45 minutes of sheer terror :disgust trying to get off anchor (actually had to cut the rode and tie on a bumper). I can plan for what I see and what I know is forecast. And I can find safe harbor on any of our shorelines or islands, especially in a 7 inch draft vessel. But I want twice the assurance I can get out of harms way. Twice the assurance that at least one of those motors will start up! Like I said before, I think I can effectively navigate and limp back to safety or out of harms way on a single 25 versus a 3-8 HP kicker! IMHO

This happened in the early 90’s and left several 30 plus cruisers and sailboats grounded on Ship Island here on the MS Gulf Coast.
 
".....It is about safety and peace of mind. "
Click to expand...

That is my reason for twins, ...... and some increased maneuverability.

Hedging just a bit, For a 16, I would think it would be a tight fit to get even two 20's back there due to the smaller width. Someone who has access would need to chime in on that.
 
According to Yamaha's web site the 20Hp 4 stroke weighs 115 Lbs. That's 230 lbs total weight for both motors + the weight of the additional throttle/cable. I haven't been able to find any other combination of motors that can match that weight, not even close to it. Any combination of a 50 Hp + 6-8 Hp kicker runs the weight to 300 lbs or higher, and in many cases, much higher. After all, if I'm buying a CD-16 I'm not worried about speed, and we have to slow down in choppy seas anyway. As mentioned, I feel much safer getting to a safe area/port with a single 20 Hp rather than a 6-8 Hp. As to the resale of the boat: at my age I could care less about the value of the boat after I'm finished with it. Now, I'm still back to my original question: does the CD-16 have the necessary room to mount the throttles/cables and motors for twin Yamaha's 20 HP 4 strokes? I really do appreciate everyone's experience and comments on the C-Brats site. It's the best darn site I've seen! Thanks, Jim
 
I didn't mention that the fuel tank/tanks would also be sized to get a range of approximately 200 miles with the 2 X 20's. I certainly think that's possibe with the boat, if the tank design is good and the weight of the fuel is distributed properly. Jim
 
Yes they will fit with room to spare. Don't get the swim/ladder platform. Go with the Pole type ladder access (can't remember the name, but the bracket is mounted and the pole/ladder can be stored or mounted upright when not in use. Port and Starboard 12 gallon fixed moellar tanks will fit aft leaving plenty access to the bilge and plug. There should be plenty of room for dual cables, but I will run hydrolic steering. One steering system for 2 motors.
 
Remote control Yamaha 20's (F20PLR) weigh 132 pounds each.

The problem won't be in hanging the motors. The problem will be getting two control boxes into the tight space available at the helm. I am sure that with enough ingenuity a person could figure out a way to put a dual binnacle control box in, but it will seriously encroach into the helmsman's space.

Then we have the question of whether one of the engines alone can get the boat to planing speeds. If it can't, then you may be able to go as fast with a 6-8 horse kicker motor.

With the reliability of today's motors, I would strongly suggest a single with kicker arrangement. It will be less expensive initially, and less expensive to maintain.

Of course, that is my recomendation for a C-Dory of any size.
 
Matt, thanks for the information. I thought that a dual throttle set-up would be iffy at the helm in the 16 and that was my main concern with idea. So back to the drawing board. It looks like your advice on a 50 + 6-8 HP is a good one and that's what I'll plan for on the boat.

It's in another post, but, I also want to thank you, Marc, and all of the other dealers and Reps that contribute to the wonderful nature of this web site, as well as each member of the C-Brats. I always know that the information is reliable, with years of experience to back it up. Jim
 
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