[Rhodes22-list] New Owner - OBM question

[The Rhodes 22 Email List]

I will second the ease of fresh-water flush as something to consider. 
After losing a Honda (years ago) to salt in the cooling passages, we 
bought a Yamaha specifically because the freshwater flush was so 
easy. I think many of them (including Hondas) now come with a more 
accessible flush but once you are considering a motor make sure you 
can easily flush it. We flush ours after every use.

Our Yamaha is about 5 years old and is a high thrust 8 hp with the 
really big prop. Downsides (compared to our old Honda 8 which was 
also a high thrust but didn't have the same gearing or as big a prop) 
is that the large prop can nick the rudder in a couple of rare 
circumstances (can't remember exactly what they were but we came 
close) and that it's not quite as maneuverable in tight docking 
situations - we don't have the motor to tiller steering. There are a 
couple of advantages. We seem to run at lower rpms and the big one 
for us was unexpected - in very choppy conditions or when dealing 
with powerboat wakes, the prop tends to cavitate and come out of the 
water much less than the old Honda.

Our 5 year old Yamaha has had some carburetor issues but these seem 
to have been solved by using ethanol-free gas.

If you are truly going to use the motor mostly for getting in and out 
of the slip, I'd go with a smaller lighter motor and not worry about 
the high thrust. We used to do a lot of weekend overnights. We would 
frequently get caught coming back with a long motoring stint either 
because of no wind or too much wind on the nose and a schedule. The 
Yamaha 8HT (or the closest you can get to it now) is ideal for those 
conditions.

Honda also makes a 9.9 "Power Thrust" and Nissan makes a 6hp High 
thrust http://www.nissanmarine.com/products/6_4.html.  It's a one 
cylinder so you'd want to make sure that it operates smoothly (I'm 
told the old Honda 5s had a lot of vibration).

Best of luck.

Mary Lou
1991 R22  Fretless
(recycled 1998)
Rock Hall, MD


At 11:42 AM 5/26/2014, you wrote:
>I've had mine a year and also have the Yamaha and have been very 
>pleased with it. One of the nice features is that fresh water flush 
>connection is near the cowling and not farther down the shaft so 
>it's easy to reach.
>
>John Waldhausen
>Bainbridge Island
>Sent from my iPad
>
> > On May 26, 2014, at 5:55 AM, The Rhodes 22 Email List 
> <rhodes22-list at rhodes22.org> wrote:
> >
> > Hi all - John here, a soon-to-be first time R22 owner, as soon as 
> Stan finishes with the final touches on a recycled '99.
> >
> > A quick first question to the assembled wisdom here:
> >
> > OBM - how critical is the "high thrust, low RPM" type of OBM that 
> is recommended? I can only find that advertised for Yamaha 9.9s and 
> above; no other brands mention the 'high thrust' versions; the R22 
> forum comments don't seem to mention it (as they do shaft length 
> and general size/hp).
> >
> > I will be a lower Chesapeake sailor, so the OBM use will be 
> primarily in/out of the marina.
> >
> > Thanks all!!
> >
> > John
> >
> >
> >
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