Have you tried a search? It's been discussed a bunch of times. I got all these hits with a search (top blue bar) on campbell prop:

[URL]http://www.c36ia.com/forums/search.php?searchid=222702[/URL]

[url]http://www.c36ia.com/forums/search.php?searchid=222842[/url]
See if this works! Tom's did not come up for me, perhaps it did for you and is a repeat?

That's really strange. When I clicked on my own link, I got nothing. When I clicked on Gary's Link, I got nothing. But.....when I re-entered Campbell Prop into the search box, I got the full results. I guess you can't copy and paste search results. Live and learn. Anyway, using the search function in the top blue bar leads you to LOTS of good info.

Maybe it is a dynamic thing that is only valid for that moment.

[quote=deising;16170]Maybe it is a dynamic thing that is only valid for that moment.[/quote]

That's it Duane. It saves searches in the database but only for a short period of time, not sure what that timeout is I haven't been able to find where it is set.

My last dive under the boat convinced me to replace the prop and keep the old one as an onboard spare. I ordered a Campbell fixed 3-blade Sailer prop 14 inch dia x 8 inch pitch (approx $600 with shipping to FL). That seems to be the right size for my M35B engine.

I am removing a fixed 15x9 3-blade, but the cupped blade design of the Campbell supposedly works like extra pitch. I plan to install at the end of the month and will report by early July.

Duane,
I'm not an expert on props, but that seems seriously under-pitched to me. I would think that going down one inch in either diameter or pitch might work (if the cupping is that much of an influence), but not both. I know you can easily dive your prop and change it, but can you easily return the new prop for a different one? Or have it re-pitched?

Hi, Tom. Thanks for your concern.

I spoke with the supplier at length and if I take their word for it, they are sure that this diameter and pitch is correct for my engine. Yes, they can repitch, but I lose lots of time in shipping to send it back.

Based upon other owners' comments, I know that same prop was seriously over-pitched for the M25 engines, so I have some confidence that it won't be under-pitched for me. Yes, they admitted that they had been recommending the wrong pitch for that engine and transmission ratio.

As they saying goes: the proof of the pudding is in the tasting.

Hi
just out of curiosity...why not a folding or feathering prop??

I'm planning on replacing mine at the end of the summer and I would like to go with a KiwiProp, these seem a good value for money

regards
Andres

I know there are many of you out there that have had great service from your folding/feathering props, but I prefer the reliability and lower cost of a fixed blade prop.

If I sailed much more than I motored or motor-sailed, I would be somewhat more inclined to think about a prop with less drag. As we use our boat mostly for cruising, it turns out that pure sailing happens only 20-30% of the time.

[QUOTE=deising;18120]As we use our boat mostly for cruising, it turns out that pure sailing happens only 20-30% of the time.[/QUOTE]

So how many engine hours do you do a year?

Other than the 10 minutes to get out of the pen and 15 minutes to get back in, I try to sail the rest of the time. So far, after 33 months, we have clocked up 177hrs engine hours (couple of long motor sails in there).

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Hi, Rockman.

In the 9 years we have had the boat, we have added about 1300 engine hours and 10,000 nm. Converting a combination of motor-sailing to pure motoring, that means we have gone about 7,500 nm under power, and 2,500 nm under sail, which is about 25% pure sailing.

With me still working (although taking long sabbaticals every few years), I can't wait for the wind to be in my favor to get somewhere. Our experiences would have been severely curtailed if we waited for wind, but we cherish a good sail when we get it.

Similar numbers to me also Duane.
When we got our boat just over a year ago, it was 13 yrs old and had 480 engine hours.
We put on 170 hours in our first year, cruising the "Inside Passage" and several trips around the Gulf Islands we covered about 900 - 1000nm; sailing when possible, but quite often having to motor...
This year we will circumnavigate Vancouver Island and hopefully when out on the open west coast we will have much more "sailing only" days, but I wouldn't be surprised if our engine hours will be the same again.
That is the difference between cruising in inside waters and day-sailing I guess...

I suppose it depends on your sailing style.
If the wind is light, we sail, just not as far, as there are plenty of great spots to stop for lunch or overnight on our lake.
If we are meeting somebody, then we use the engine as necessary to reach our destination.

Then, this weekend, the weather was terrible, and we had headed up the coast with 9 Catalinas, so we motor sailed to reach our destination on time.

Still, I am sure we all use less fuel than the 40' stinky next to use in the marina.

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