Re: prop pitch?

Andy,
Those same speeds and rpms sounds very close to mine. I am assuming the
information you provided was for a "18"? Enjoy your vacation, please don't
spend it taking notes! Cheers,
Eric
1966 Evinrude Sportsman 150

----- Original Message -----
From: "Andy Perakes" <aperakes@...>
To: <omc-boats@...>
Sent: Wednesday, July 16, 2003 9:28 PM
Subject: Re: prop pitch?

> I generally like to keep rpms closer to 3000 when cruising which pushes me
> in the mid 20s, depending on whether I'm going with or against the chop.
My
> redline is also around 4000 rpm with low-mid 30 mph max., but I don't like
> to push an engine this old. We did on occasion up to ~10 years ago and
the
> result was an overheat light within a few minutes. Now I'm more concerned
> about things like rods, pins, and bearings. The boat usually planes
between
> 15-20 and will get there very quickly if I goose the throttle. I'm on
> vacation next week and hope to put on a lot of hours so I could write down
> some detailed info (rpm, plane & top speeds for each prop) if it would be
> helpful.
>
> You should always have a spare prop if you're on a big lake (I'm on
southern
> Lake Huron), but I'd find a prop repair shop before scraping the old one.
> Depending on how bad the damage is, they usually do a pretty good job on
> repairs. It cost me $30 to repair minor damage on my 18 and $35 to get
the
> 22 knocked down a few years ago. Had I gone through a boat store instead
of
> direct to the repair shop, prices would've been double+ in time and money
> and they would've sent it to the same place I took it!
>
> ----- Original Message -----
> From: "Eric Graczkowski" <ericg@...>
> To: <omc-boats@...>
> Sent: Wednesday, July 16, 2003 7:16 AM
> Subject: Re: prop pitch?
>
>
> > Very interesting write up. With that information in mind, what is your
> ideal
> > RPM? I am not aware of the pitch on the prop I have, but plane at about
> 3500
> > and max at 4000 RPM. Maybe 34 MPH tops. Anyone else have similar
> experience
> > with the V6? If so could I approximate the pitch based on others
> experience?
> > The prop I am running met some gravel suddenly and am looking for a
> > replacement... merely considering the possibilities.
> >
> > Eric
> > 1966 Sportsman 150
> > Oshkosh, WI
> > ----- Original Message -----
> > From: "Andy Perakes" <aperakes@...>
> > To: <omc-boats@...>
> > Sent: Tuesday, July 15, 2003 10:36 PM
> > Subject: Re: prop pitch?
> >
> >
> > > I have 3 props (16, 18, and ~21) for my 155 Hp '67 Reveler i/o. (Just
> > like
> > > the one on e-Bay -- thanks much for sending the link!!) The 18 is
> pretty
> > > good for all-around use. The 16 revs high, but still functions okay
and
> > > gives me lots of power (8 skiers at once). The ~21 used to be a 20
that
> > my
> > > smarty brother had upsized to a 22 about 20 years ago thinking it'd
make
> > the
> > > boat go faster. The effect was it acted like a governor with groggy
> > > performance and wouldn't swing over ~3000 rpm. I had it whacked down
a
> > > little, but it still clips me at 3500 rpm. So, based on my humble
> > > experience, you really can't deviate a whole lot from nominal (maybe
1-2
> > > sizes up or down tops). My guess is a 12 would scream rpms. If
you're
> > just
> > > looking for a spare prop for emergencies, it'd probably work, but I'd
go
> > > with the 14 given the choice.
> > >
> > > For others with the Buick V6 155 Hp engine: As an original owner
> running
> > in
> > > fresh water only during short Michigan summers, we've faced two
regular
> > > problems: about every 10-15 years, both the alternator and the water
> pump
> > > need to be replaced. As someone previously mentioned, parts are now
> > > obsolete and very expensive. I kept my old parts in hopes of
rebuilding
> > > them, but so far haven't found parts for my parts (stator for the
> > alternator
> > > and shaft/impellor for the pump, in particular). Our winterizing
> > procedure
> > > for 36 years has been to follow the instructions in the owner's manual
> > which
> > > simply states (only slightly shortened) open the petcocks and dump
some
> > oil
> > > down the carb. Last year I started pulling the cooling hose in an
> effort
> > to
> > > dry things inside out a little quicker, but I'm a little leery about
> mice
> > > moving in. If anyone has any tips that have worked for them on
> > > servicing/maintaining/winterizing this engine, I'd love to hear them,
> > > especially if you know any good sources for parts (water pump prices
> > ranged
> > > from $380 to over $500 last year!!!)
> > >
> > > ----- Original Message -----
> > > From: <Pated66@...>
> > > To: <omc-boats@...>
> > > Sent: Tuesday, July 15, 2003 4:53 PM
> > > Subject: RE: prop pitch?
> > >
> > >
> > > > My concern would be the RPM you're running. the lower # props are
> going
> > > to let your motor turn faster and lessen your top end.
> > > >
> > > > Bill Desmond <nebdlo@...> wrote:
> > > >
> > > > >
> > > > >my rouge 210 has a 14 x 18 prop on it. i saw a couple
> > > > >props on ebay. 1 is 14p and the other is 12p. my ?
> > > > >is, how much will it gear the boat down. right now the
> > > > >boat is on small lake so top speed is not much of an
> > > > >issue. i will be pulling skiers and tubes. ive never
> > > > >experimented with prop pitch so i dont know if going
> > > > >from 18p to 12p will be alright or if i will end up
> > > > >with a tug boat.
> > > > >thanx
> > > > >daemian
> > > > >
> > > > >__________________________________
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> > > >
> > >
> >
> >
>
Received on Saturday, 19 July 2003