We have a Yamaha 9.9T (High Thrust). It is currently in the shop getting new lower seals and a new CDI unit (Electrical brain) due to a "Close By" lightning strike! Since it has been an extended fix due to the shop guy leaving and the yards Yamaha certified go-to guy out of town on his own Vacation, our yard lent us a Merc 7.5. Let me tell you .......there is NO comparison. It is like .......... getting in a corvette, hitting the gas pedal and being propelled by a 90 horse GEO motor!! What a let down and what high marks the Yamaha 9.9T gets because of this. Yet I don't think it is just the Yamaha, I think it is the High thrust and 4 stroke that make the difference. Now.... the 7.5 is not 4 stroke, does not have remote control and is not high thrust. It weighs 20 pounds less than the 4 stroke, needs oil added to the gas and takes quite a long time to get the boat moving in reverse! We could not even figure out how to tilt the thing out of the water until we went back had asked the yard guy about it! But the real difference comes when you need it the most. Like backing down in the case of approaching a dock or another boat or having to get out of the way in a busy harbor. The 7.5 2 stroke simply does not have the muscle that a high thrust 4 stroke has. I don't think this motor was designed to kick a sailboat either! Something about the exhaust causing cavitation. (someone else can explain that one too)
Find a good one on the used market. My guess is a 8-15 HP and build into your cost having it gone over by a certified mechanic. In the Yamaha world, I believe the main difference between the T9.9 and the 15 is in the Carburetor and that is about it (the 15hp owners will need to correct me please) Electronic start and a Remote Control keeps you out of the Lazerette and your eyes front!! Most Electric starts should also include a alternator to charge your starting and house batteries. There are many motors out there on ebay /craigslist/outboardmotor.com that are for sale not because they are tired, but because they were the wrong motor for the sellers application. Just do your homework! :-) Like asking us on this list! Good luck Tom C Kiona '75 Std #1914 Currently, --just bought the Teak 1/2" to replace both Aft main cabin bulkheads, so my turn to ask questions is coming up. Please get those replacement project notes out!! Humm 30+ years is pretty good I think for original equipment huh!! On Wed, Sep 24, 2008 at 1:17 PM, David Techlin <[EMAIL PROTECTED]>wrote: > FWIW, > > 9.9 Mercury Big foot....4 stroke with Longer shaft and plenty of power, 6+ > mph and plowed into and over 4 footers with no real problem. Hard to fit in > transom cutout, so I glassed it in and put on a OB bracket. Very happy with > that solution, no need drag when it isn't needed. > > Dave Techlin > GUSTY > > --- On *Wed, 9/24/08, Henry & Lynn Colgan Cohen <[EMAIL PROTECTED]>*wrote: > > From: Henry & Lynn Colgan Cohen <[EMAIL PROTECTED]> > Subject: Re: catalina27-talk: Outboards > To: "Catalina 27 - Talk Email List" <[email protected]> > Date: Wednesday, September 24, 2008, 7:44 AM > > > Hi Kevin - > We have a 1975 C27 and are using a Yamaha 4-stroke 9.9 HP. We have > been told not to use anything with less power and our experience backs that > up - we can get 5.5 knots with this motor and it's nice and quiet, as well > as being fuel-efficient. Don't know enough about electric motors but they no > doubt are the future motive power - the question is, do they have enough > muscle (in their present state of development) to do the job of pushing 6500 > pounds through the water? > > Henry & Lynn Cohen > Ceol Na Mara > Rock Hall MD > > > > On Sep 24, 2008, at 2:36 AM, Kevin Morton <[EMAIL PROTECTED]> wrote: > > What outboard motor is everyone using? Would a 6hp be enough? Finally, > I am considering the Torqeedo Cruise 2.0L electric long shaft outboard. Any > thoughts/opinions/facts? > > Kevin M. Morton > > S/V Serenity #1920 > _/)_ > > > > > >
