Twin Honda Prop Request

Holoholo · Posted: Thu Jan 24, 2008 6:09 pm Post subject: Twin Honda Prop Request

Hello All Twin Honda 50 Owners:

I know there are a lot of you out there and since there are so few twin 50 Yamaha owners (which I am one), I need some advice. On my CD 22, I am running 14" pitch SS props, but when I test ran the motors, I found I could only get 4700 RPM's which my mechanic said should be between 5000-6000 RPM's. He said that by downsizing to maybe an 11" or 12" pitch, I should be able to get to that range and also get a better hole shot. I posted earlier for help from Yami twin owners, but after looking up profiles, there are very few of us listed, so the closest I can get is some of you with either twin Honda's or Suzuki's 50 HP 4 strokes that have ocean tested and approved of their prop sizes.

Any advice is appreciated and will help me as I get ready to order.

Vern

C-batical · Posted: Thu Jan 24, 2008 6:44 pm Post subject:

Hi Vern;

I have twin Honda 40's on my 22 ft. cruiser and I am currently running 4 blade Solas 12 inch pitch props. I run between 5100 and 5400 RPM, WOT, depending on load. My boat is fully rigged and is usually fully loaded. At the RPM's that you usually run the 40 and 50 are basically the same motor.

Best regards,
Rollie/C-Batical

Rob & Karen · Posted: Thu Jan 24, 2008 6:48 pm Post subject:

westward · Posted: Thu Jan 24, 2008 7:18 pm Post subject:

Greetings. I would find a vendor that is willing to let you try 2 sizes: 13" and a 12" pitch. I run 12" on our Honda 40's and they definitely feel like they're in "low gear" (ie. WOT above 6000 RPM and incredible hole shot) but that's what I directed my rigging dealer to install as we tend to run heavily loaded and often in rough water. I will probably purchase a pair of 13's as my backup set. I believe 13" is the standard choice for a 22' Dory with twin Honda's. Double check that on the performance tables section of the factory website. Many dealers will let you test run props provided you agree to purchase one or the other and agree to return the non-choice props in "as new" resalable condition and very quickly. It helps to approach a vendor you've done other business with as this is asking a favor. What you're currently running does strike me as way overpropped and so you're prone to lugging the engines. Good luck, Mike.

C-batical · Posted: Thu Jan 24, 2008 7:27 pm Post subject:

Hi Vern,

My boat came with Honda, 3 blade, 13 inch pitch. I ran them for two years and got about 200 RPM more at WOT. However, I prefer running with the 4 blade, 12 inch props because the boat seems to perform better from low to mid RPM's.

Best regards,

Big Mac · Posted: Thu Jan 24, 2008 10:33 pm Post subject: Twim Honda 40 HP

Hello Vern, we are running Solas SS 11 1/8 x 13 on the Mary Ellen (twin 40hp Hondas). WOT is about 5700 rpm with an average load. We also have Permatrims. I have been very happy with this set up. Hope this helps, Big Mac.

1TUBERIDER · Posted: Fri Jan 25, 2008 8:34 am Post subject:

I am running solas four blade 10.5 x 13. My troll speed is a little over 1 mph with one engine. The stock blades are 3 blade 11.1 x 13. I am running Honda 50's.

If I were fishing I would prefer to set my props for trolling speed. These boats can see over 30 and that would be lake type conditions, ocean conditions usually are not safe for 30 in our boats.

l don't have any top speeds listed or rpms as I don't run this boat at wot.

Jeff

Holoholo · Posted: Fri Jan 25, 2008 11:46 am Post subject: Twin Honda 50 Request

Thanks to all who have posted. This gives me a starting point and yes, my mechanic has offered to swap props for the right one. I generally just fish the ocean here in N CA and am not a WOT runner, but prefer to have hole shot when and if I need to make it over waves at our local port entrance. I did notice that there was quite a difference in prop pitches but am sure that is basically preference. My 14"s are definitely too big. Also, I will be inquiring about the 4 blade pros as I am not too familiar with those.

Thanks again.

Vern

Sea Wolf · Posted: Fri Jan 25, 2008 5:33 pm Post subject:

Vern wrote: " Also, I will be inquiring about the 4 blade pros as I am not too familiar with those. "

Vern-

Try looking through these two threads:

Props, 3 Blade vs. 4 Blade

4 vs 3 Blade Propeller

Joe. Thumbs Up

jlsparks · Posted: Fri Jan 25, 2008 10:14 pm Post subject:

If this will help, I'm running 10.5x13 on my twin honda 50's and my max rpm is 6000 on the nut. These are just stock 3 blade props but I really like the low end performance and top out at 30 + on calm water.

Jim

mpmccoy · Posted: Sat Jan 26, 2008 12:38 am Post subject:

Mine are 11 X 13 OEMs... I used to be concerned that I never saw anything above 3500 until I saw a post that said. " Prop pitch and size? I don't care...boat goes fast and slow enough."

The boat probably would do 30 knotts lightly loaded and I'm not a troller and don't pull skiers so I'm good with the above . Cruising is my speed. Don't care to get anywhere just like to go.

I was thinking recently that I might enjoy a forum just for twins.

Les Lampman · Posted: Tue Jan 29, 2008 12:25 pm Post subject:

itiming · Posted: Sun May 30, 2021 9:03 pm Post subject:

Looking for propeller suggestions for our loaded 22 Cruiser (2008).

Our twin 2012 Honda BF40D motors have Honda OEM aluminum 3-blade props stamped 11.1 x 13 HQ. Did a test run at WOT this weekend to 5400 rpm at 24 mph. It was a day trip load (2 people, 20 gal fuel, 5 gal water, 40 lb cooler-boat has 3 batteries). It seemed to cruise well at 4800 rpms at 19 mph.

Is this a good result?, or should I try other props for light touring?

Also, we plan more heavily loaded touring trips with full fuel/water/fishing gear/food for a week. Also day trips with more passengers.

Would it be better to switch to other props better matched to heavier loads?

Any prop suggestions?

Thanks for sharing your experience/recommendations.

T.R. Bauer · Posted: Sun May 30, 2021 10:52 pm Post subject:

I don't think you did too bad, but I'd try to hit as close to 6k as you can for the best economy and performance. You're really close right now and I'd talk to a prop shop to dial it in perfectly. My outboards overshoot 6k a tiny bit with an empty boat, but that was on purpose because I run really heavy most times. You may want to do the same.

C-Green · Posted: Mon May 31, 2021 10:22 pm Post subject:

I agree with T.R.B. I normally run heavy in fresh water with four blade 11.1x11 (DxP) Solas Amita props I also have permatrims and enlarged trim tabs. When light I get 5900 rpm.s and normally loaded (heavy, remember) 5400. Since max HP is at 5500, lightly loaded you want to be as near as possible to 6000 and possibly over (just don't run it there) so when loaded you have the best HP possible. Four blades seem to give better response at low and mid rpm's. Permatrims seem to help a lot as a rudder when docking slowly (my preference) and of course, for lateral and bow/stern trim when running. I average about 4 smpg, sometimes up to 4.5. I started with Solas 3 blade 13 pitch and went to 4 blade 12 pitch and was only at 5400 WOT, so I then went to 11 pitch. The 12 pitch props are my spares, only one needed once but awfully glad I had them.

Jay