Re: [omc-boats] Prop Rebuild/re-pitch

Good points, Andy.

I paid $60 this year to have a 14x13 SST rebuilt (same pitch) after I took a
nick out of one blade at slow speed.

BTW, Aluminum props are typically more expensive to repair than stainless
steel as they tend to shed or fracture large chunks when they strike
objects.

Locally in Salt Lake, we have two shops that handle OMC stringer prop
repairs. A-Rock and Hansen Marine, both are listed on my website at:
http://hhscott.com/evinrude/sources.htm

As a side note: I ran a 14x13 SST prop @... 6200 ft ASL @... WOT = 4400 RPM and
got 38 mph, 2 people aboard. The 14X15 SST prop @... 3610 ft ASL WOT = 4000 RPM
also got 38 mph, 2 people aboard. Both verifed by GPS. My boat (16-ft 66
Sportsman w/215 V8 pretty much hits a max speed "wall" and likes to get
porpoise "happy.")

The taller 15-inch pitch prop does yield a little better cruise economy, in
the mid-range, since it lowers RPM a couple hundred RPM at a given planning
speed. Fuel economy seems to be really "sweet" around 22 - 25 mph.

Lee Shuster
Salt Lake City

----- Original Message -----
From: <aperakes@...>
To: <omc-boats@...>
Sent: Friday, October 27, 2006 9:39 AM
Subject: Re: [omc-boats] Prop Rebuild/re-pitch

> I've got a '67 Reveler with the 155 Hp and have 14x16, 18, and 21 props
> for
> it. The 18 definitely gives the best overall performance and I normally
> run
> about 32 mph max. My boat also has more to give, but I'm not willing to
> push a 40-year old engine.
>
> Our 14x21 came from our 14x20. Many years ago, my *older* (and
> theoretically wiser, right?!) brother figured if the 20 was fast, a 22
> would
> be faster so he had the 20 repitched. Unfortunately, he learned the 22
> ended up acting like a governor and limitedengine revs to about 3500 rpm.
> What I learned is that it is much easier to have a prop modified up in
> pitch
> than down. I was able to get it cut back somewhat, but not all the way
> back
> to a 20 and only picked up maybe 100 rpm. If your spare 18 is pretty
> banged
> up, you might try having it rebuilt as a 19 or 20, but definitely don't go
> beyond 20.
>
> Rebuilding the props is typically done by a specialty shop and you're best
> off if you can find a shop in your area that does the work themselves.
> Most
> marinas, boat dealers, etc. will take your prop and have it fixed, but
> they
> typically send it out for repair. It's been about 5 years since I've had
> any work done, but the local boat dealer wanted $75 to send out a simple
> repair job. I managed to find the shop they send to, took the props there
> myself and got to talk to the actual person doing the work who obviously
> was
> much more knowledgable than the store sending the work out. And going
> direct to the source cut the price to less than half -- $30. It just so
> happens I brought 2 of my 4 props home for some rework so I need to go
> back
> and visit this shop again, assuming it is still there. I will ask if he
> takes mail orders then if you can't find a local shop, at least you'll
> have
> one reliable source. Btw, the reason I brought 2 props home for repair is
> my brother managed to ding the 14 x 18 the first time in service and I'm
> planning to plead for another attempt to restore my 14 x 20. Apparently I
> was blessed with an expensive brother!
>
> Sorry, I can't offer any suggestions on thru-hull sealants. You might
> want
> to try the Boat US website to see if they have any suggested practices
> there.
>
> Andy Perakes
> 1967 Johnson Reveler
>
>
> ----------------------
> On Thu, 26 Oct 2006 22:50:33 -0700, Kenneth Fingerlos wrote
>> Hello -
>>
>> I'm interested in some general info.... I've been working through a
>> process of looking for the "right" prop for my 16' Seasport-II 155.
>>
>> With a 14x18 on it... it happily runs right up to the redline at
>> just under 30 mph; it's got a lot more power to give, and I'm
>> backing off the throttle to keep it where it belongs.
>>
>> I've been looking for the 14x20 .. or even the 14x19 SS prop. I've
>> also got another 14x18 which came with the boat, but it's pretty
>> beat up.
>>
>> Ok... now the question -
>>
>> 1.) Typically who does prop rebuilds? Is this something the typical
>> marine machanic would do, or is it a specialty service? What does
>> it usually cost?
>>
>> 2.) I've seen references to re-pitching props... How does that work,
>> and how far can they go? Can a 14x16 be made into a 14x20? What's
>> the downside?
>>
>> Unrelated question ... what's the best selant for bolts going
>> through the hull below the water line? The silicone stuff I'm using
>> seems like it's so thick it just gets pushed through the hole,
>> and/or scraped off the fastener.
>>
>> Thanks for the info.
>>
>> Kenneth
>>
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>
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Received on Sunday, 29 October 2006