I have a 1978 CP-16. Right now, I have a 45 pound electric trolling motor. Someone is offering me a 9.9 HP 2 stroke for free (yes, good working order). I can have if it I want, but I don't know if that will be too much for the boat. My typical use would be getting in and out of my lake marina, but I might also want to quickly head to parts of the lake 9 miles away. In those circumstances, the speed would be perfect. My wife would also feel more comfortable with a gas motor since I have two small kids and she seems to think electric motors run on voodoo.
Is a 9.9 too much motor for a Com Pac 16?
- Thread starter KevinSeise
- Start date
The 9.9 is easily twice as much power as you will need to achieve hull speed. Not sure of the weight but suspect it will be quite heavy - a lot to hang on the back of a 16 ft boat and also a pain to lug around. Free is good but you would be happier with a smaller, lighter motor in the long run (say 3 - 5 hp max).
I'd take it. It's free. If the motor isn't suitable you can give it to someone else...or...sell it. Biggest deal is the weight, not the power. If your boat has a retractable centerboard the 9.9 will probably push it along pretty quickly... The excess power will cause some prop cavitation and push the stern down...squat.. as you get near the hull's speed limitations... unless you can get it to plane.
Yes. I had one on a Chrysler 20. Overkill on that boat. And unnecessary weight on a 16, and those things are heavy as elephants. If it's Johnson or Evinrude, it's actually their 15 with a restrictor plate to produce an engine that got under a 10-hp licensing limit some state(s) decreed for youth, or some such nonsense.
jssailem
SBO Weather and Forecasting Forum Jim & John
- Oct 22, 2014
- 23,099
I had a Montgomery 15. It came with a 2stroke 3.5HP Mariner. The boat displaced 750lbs. It was a little lighter than your Com Pac16 as 1100 lbs. I did not want to put any bigger motor on the stern. I removed the motor and put it in the cabin while sailing.
If I were to do it, I would opt for one of the Epropulsion 1kW Spirit Outboard's. Spirit 1.0 Evo Electric Outboard Motor
They come with their own battery pack. They have plenty of power to push an inflatable dinghy around a lake or bay. They would excel at moving the Com Pac 16 in and out of the marina or pushing her home if the wind died. It would be easy to rig a 50W solar panel to maintain the battery. Then it would be a clean no fuel stain/odor experience.
If I were to do it, I would opt for one of the Epropulsion 1kW Spirit Outboard's. Spirit 1.0 Evo Electric Outboard Motor
They come with their own battery pack. They have plenty of power to push an inflatable dinghy around a lake or bay. They would excel at moving the Com Pac 16 in and out of the marina or pushing her home if the wind died. It would be easy to rig a 50W solar panel to maintain the battery. Then it would be a clean no fuel stain/odor experience.
Neither the transom nor the mount is beefy enough to handle the weight and torque of a 9.9 hp motor. Free is too much money if the transom is damaged because of the motor and needs to be repaired.
Maybe consider a trade. The Com-pac's advantage is they are wide boats, so I don't think you would suffer too much from transom squat, but if you could offer the motor up for trade with someone else...
Craig's List - Eastern NC
-Will
Craig's List - Eastern NC
-Will
I have a 19ft Mariner, weighs 1350 lbs (racing weight). The 9.9 is way overkill and will kill you getting on and off the transom/mount.
I started with a 5hp Honda, which was more than my 19ft boat needed. Never opened it up more than 3/4 throttle. Noisy, but failure to start when needed was why I gave up on it. Cost me friends sailing with me when I couldn't get back to the dock when I said I would. Sold it, and bought the the Epropulsion Spirit 1.0 Plus on a prayer.
The Spirit was a revelation as to how great an electric can be. At first, I thought I had traded starting anxiety for range anxiety. So I did some 1 mile runs in the creek (both directions) to get distance, speed, and battery consumption information. Turns out running the motor at 400 watts (out of 1000 available) gave me 4kts, and a dependable 12+nm range. But motoring with an electric is so pleasant thanks to the quiet, lack of vibration, and twist handle starting that I now motor much more than I did with the gas motor. I motor up the creek at about 3 knots on 250 watts (which gives me 5 hrs battery) to the head waters and view the wildlife who are no longer fleeing the outboard noise. Turtles stay on their logs, and I can talk to fishermen on the shore or in a boat at normal speech - no shouting. My shoulder thanks me every time I use the motor.
Fred W
Stuart (ODay) Mariner 19 #4133 Sweet P
It will likely cause the boat to create a wake. It's too much power for that size of a boat and they weigh a ton
Ask your wife to fill the tank with gas/oil, change the lower end lube, grease all the points, lug the thing on/off the boat, winterize it, repair it... I think her opinion on electric might change. They just make so much more sense for day sailors
Ask your wife to fill the tank with gas/oil, change the lower end lube, grease all the points, lug the thing on/off the boat, winterize it, repair it... I think her opinion on electric might change. They just make so much more sense for day sailors
Y'all convinced me. I looked at that motor on line. Over $1500 which may be a bargain but yikes! I paid less than twice that for my just-acquired 41-year-old Compac C and galvanized trailer that came with a very nice newer 4 hp 4-cycle conventional outboard. And then I remembered that a couple of years ago I bought a used trolling motor taken off a large center console fishing boat to use on a canoe and found it grossly too big. It's somewhere in the DMZ that is my garage. I'll have a battery on board as soon as I install and wire navigation lights. Why not give it a try?
The electric trolling motor wont get you out of a storm but its performance will probably surprise you