I recently tried to use my short shaft 9.9 Merc. 4 cycle on my V21. I was not happy with the results. The motor sat so low in the water on the lower mount adjustment that water was all the way up to the bottom of the engine, the mount is not stable, it moved side to side and the tiller was at such a angle that steering at anymore than half throttle would have been a problem. What has worked for you guys? Maybe the upper notch on the mount would be better? I know a smaller engine with a long shaft would be the best answer but I do not have a extra thousand laying around. I have seen some boats with a fixed motor mount that extends maybe a foot away from the transom, was this custom made?
9.9 on V21
- Thread starter troutman
- Start date
- Jul 24, 2006
- 628
hmm, as you stated a smaller hp long or extra long shaft is preferred. The 9.9 4stroke is heavy for a 21ft sailboat, extra weight on transom will cause it to sit lower in the rear. I am not sure about your mount question, you said you used the "lower mount adjustment" on what? the motor? If you used that it is the tilt angle adjustment where you pull the pin and adjust tilt so bottom cavitation plate is aligned with bottom of hull. If you have an adjustable mount bracket you adjust it so the cav plate is aligned with bottom of the boat. The fact that it "moved side to side" is prob due to it not being rated for a heavy 9.9 4 stroke? You are playing with fire not using at least a long shaft. A big wave or wake will swamp your motor! And or it will come out of the water and suck air in the cooling water intake and race the rpms. depending on where you use the boat, ie currents, wind speed, etc you could get away with 2hp-6hp extra long shaft just fine, maybe even a trolling motor? just my 2cents worth!
Keep your eyes open on Craig's list for a used trolling motor... or sometimes you can find one on sail at Dicks or Gander Mountain etc. I used to have a trolling motor on my V21. I got it for $300... still have it in my shed, I'm going to mount it to my Hobie for this summer. Pushed my V21 at hull speed with that motor... mine is a 55lb thrust but I don't think you need one that large....and since you only need the motor to get in and out of places... of if the wind dies and you are on the opposite side of the lake.... it works just fine with a single deep cycle batter. And it does not smell, it is quite, light weight, and VERY RELIABLE. Buy a second batter (trolling) for the boat (exclusive for the trolling motor). You will love it.
My goodness! 9.9 on a 21 footer? Your boat is 1/3 the size of mine and I use an 8HP that pushes it to hull speed in a breeze, on the ocean, uphill both ways. Either get the trolling motor or a 4 HP. It will do everything you need for a fraction of the weight.
I regretfully agree with what has been said. I just wanted to use the 9.9 that I already had. I did manage to trade my old Hobie 16 for a 7.5 Evinrude Yachtwin. He is going to throw in a nice compass as well. I know this is not a great trade but I needed to move the Hobie and needed a long shaft that was lighter, 60 lb. Yes, the 9.9 really moves the V21 and I think it was rated for 10 hp but this was a lighter 2 cycle as that was what was used back then.
I bet you could sell you 9.9 on Craig's list (wait until April when people get anxious about the water) and have enough to buy a brand new trolling motor, the deep cycle battery, a small solar panel for trickle charging the battery and a decent charger with nothing out of pocket. If your 9.9 runs well, you could easily get $600+ for it.
The MinnKota 50 is only $260 at Cabella's right now.... They also have packages that include the charger for under $300. I've bought trickle chargers off of eBay for less than $30 and a quality deep cycle battery can be had at Walmart for $135. If you got $600 for your 9.9 you would still have $135-ish left over for a nice hand held VHF radio ...
I used to have a Coronado 23 set up just like this. Had almost twice the displacement of the MacV21. I only sailed on the weekends so the trickle charger had my battery topped off by Friday and I never had to mess with it. It was a great system and the silence of the electric OB really enhances the experience. And "starting" the motor is just a twist of the handle. No starting issues.
Do some horse trading and have fun with it....
I think a trolling motor makes sense if you only want to sail, I have a 55 thrust I can use if I decide to go that way. I went ahead and traded the Hobie 16 for the Yachtwin 7.5. The Yachtwin will charge my battery and is a long shaft. I like the idea of more than enough motor to cruise if the wind is not that great. Maybe this is a no no with some people, it is not like I am going to pull skiers behind the boat.
you can add liberal amts of vasoline to the rubber cowl seal to help waterproof the engine.
(a trick used by open fish boats with brackets)
I'm suspect of trolling motors on boats. but if the lake is small, and you don't get caught out, it can work.
but when it blowing like stink, rough seas, and the halyard broke, you want the gas power.
(a trick used by open fish boats with brackets)
I'm suspect of trolling motors on boats. but if the lake is small, and you don't get caught out, it can work.
but when it blowing like stink, rough seas, and the halyard broke, you want the gas power.
Be aware that we tend to run motors at lower speeds for sailboats, and tend towards shorter distances, which means a lot less charging than you might think. For many, in and out of the marina at 1/3 throttle won't get any appreciable charge into the battery. Of course, your usage and results may vary considerably.
Brian
I was surprised to find out the 7.5 only puts out 5 amps max. I have been caught out in some bad weather and a outboard is a nice way to get back to land. Once I had a sheer pin sheer on a fishing boat on a local river, the trolling motor was so slow going against the current that it took 2 hours to get back.
You have to get to an engine with an alternator before you see any real generation. These flywheel attached magnetic systems simply don't have enough magnetic material for any serious generation.
An alternator or generator is just a huge amount of coiling for generation. I don't even waste time with my motor. I have a 5hp, which pushes my 22 at hull speed, and Honda has a generation kit for it. I did not bother installing it. It is 7a at full throttle, which I assume is where yours is at as well.
If you want generation, buy a small generator. Honda/Yamaha all make incredibly fuel efficient generators. A used one can be gotten for very cheap. These are built for electrical production and sip fuel.
The short answer is, these outboards just are not built around appreciable energy. If all you were looking to do was run a few LED's off of the motor as you motored in at night; sure. 7.5 amps should give you around 90 watts. Figure you lose a bit, you should see around 80 usable watts.
That would run all your running lights if you used LED's. However, if you are looking to run anything more or charge a battery; I think a generator is your most economical and earth saving bet. They run for hours on the same amount of fuel you burn in a hour.
An alternator or generator is just a huge amount of coiling for generation. I don't even waste time with my motor. I have a 5hp, which pushes my 22 at hull speed, and Honda has a generation kit for it. I did not bother installing it. It is 7a at full throttle, which I assume is where yours is at as well.
If you want generation, buy a small generator. Honda/Yamaha all make incredibly fuel efficient generators. A used one can be gotten for very cheap. These are built for electrical production and sip fuel.
The short answer is, these outboards just are not built around appreciable energy. If all you were looking to do was run a few LED's off of the motor as you motored in at night; sure. 7.5 amps should give you around 90 watts. Figure you lose a bit, you should see around 80 usable watts.
That would run all your running lights if you used LED's. However, if you are looking to run anything more or charge a battery; I think a generator is your most economical and earth saving bet. They run for hours on the same amount of fuel you burn in a hour.