4 blade props

starcrafttom · Posted: Mon Dec 13, 2004 3:29 pm Post subject: 4 blade props

I know that this has gone around before and i read all the old post. I have a 4 blade prop on my 70 evenrude and love that thing. my only question is what size for the honda 90?/ some of you were going to try it but never wrote back or had them on other motors. this will be one of the first things i get after the break in period.

starcrafttom · Posted: Tue Dec 14, 2004 11:41 am Post subject:

come on 91 views and no wisdom from the masters

Da Nag · Posted: Tue Dec 14, 2004 12:30 pm Post subject:

Use The Force, Luke...or just the search. Xmas Naughty

Compositie Prop Thread

Jon (C-Lou) and I both use the Comprop 4-blade props on our Honda 90's - we both like 'em. Lot's of info in the above thread.

Sea Wolf · Posted: Tue Dec 14, 2004 1:04 pm Post subject:

There are several reasons why I think you're not getting anyone to jump in here and give you a definite answer:

1. The topic has been discussed before, at great length. Just about all the wisdom available is there already.
2. You've read all those posts without coming to a conclusion-this shows how difficult it is.
3. The exact solution/answer/pitch depends on your type of boating, boating venues, loading, engine rpm preferences (within the range recommended), prop metal or other material type, etc.
4. You're begging the question for an exact answer, which apparently no one wants to go out on a limb and GUESS.

My best recommendation for such a situation would be to go to a dealer which could provide you with a number of pitch alternatives and try them out one at a time. If you pay up front, they will then let you try various ones until you get it right to your satisfaction. This is harder to do in a 4 blade design because there are less available choices, but what you're obviously trying to do is avoid buying the wrong one and getting stuck with it. Also there are specialty outfits like Prop Tech that design their own products and can split hairs between pitches, rakes, cups, blade design , etc.

Have you seen the September 2004 edition of Trailer Boats Magazine? It has a review of five of the 90 hp outboards available, including noise ratings. The article left out the new 2005 Yamaha 90 EFI--too recent to be included. I have this last motor and I am very impressed with it! That same edition also discusses prop selection rather thoroughly, at least to those who haven't studied it to death already.

You could alternately try a Pro-Pulse adjustable pitch prop or a ComProp which are both 4 bladed props to find the correct pitch-but I doubt seriously that the pitch in one of those would directly convert over to a stainless prop, depending on the design of the latter.

I'd start with 16 inch pitch and go from there!

Maybe now other will chime in and give us some other ideas? Joe.

Da Nag · Posted: Tue Dec 14, 2004 1:41 pm Post subject:

Sea Wolf · Posted: Tue Dec 14, 2004 4:36 pm Post subject:

Bill- Good points coupled with sound, practical advice and an insurance policy! Sounds like a winning plan to me. I didn't have the experience with the Comprop or the Honda to offer, so took the safe route.

The prop trial idea is best for someone who's a real perfectionist with a lot of time and money to spend. On a boat as heavy as and with a flattish or rounded top performance curve as the C-D 22, it would lead to only marginal improvements. Good that we were able to zero in on the Comprop! Joe.

starcrafttom · Posted: Tue Dec 14, 2004 5:07 pm Post subject:

thank you all for the advice. I missed the size prop on the thread for the 90-hp. to interested in where people can remember what the posted one page one.

I read the article in trailed boat but missed the part on props. It was that article that made me decide on the e-tec 9o, but the honda financing made the whole boat possible.

i have hade the comp prop before on my starcraft and really love it. I had to quess on the size because no one would give me advice on it. Their in no local dealer for comp prop. west marine carries them but they are becoming the k-mart of boating stores . no one there knows anything except what tie their next lunch brake is.

bill i will try the size you suggested and not hold it against you if i dont like it. in fact comp props site only has two choices for the 90 honda so maybe one of each is in order. anyway he who takes bad advice is more then half responsible for it.

I must have missed the prop size in the old post the first time to busy laughing.

Sawdust · Posted: Tue Dec 14, 2004 5:46 pm Post subject:

Another easy way to go - we've tested, tested, tested, and the winner is - 4 blade, 15" standard (Honda) Solas... this on a fairly heavy 22.

Not better than the comp job maybe, but it sure is nice and smooth. Good out of the hole too. Brings the top down a little from the 3 blade -- still within range. YMMV. 10 boats, ten different answers. This is just one.

Dusty

starcrafttom · Posted: Tue Dec 14, 2004 8:02 pm Post subject:

thanks sawdust but the solas are .. what 200 dollors or somthing like that.

Sawdust · Posted: Tue Dec 14, 2004 9:24 pm Post subject:

Don't know the price, but ain't much you can buy for a boat that's less than 200 bucks! If'n I wuz smart like Tyboo Mike I'd just make me a new CD.

Dusty