Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 21-01-2018, 18:55   #1
Registered User

Join Date: Feb 2015
Location: Alaska now, San Carlos Mexico in the near future
Boat: Looking for a catamaran
Posts: 138
Seawind 1000 ventilating with Honda Engines

Folks, I am looking at a Seawind 1000 to buy. The one I am interested in is powered by Honda engines, 25" shaft, prop unknown. The engines are cavitating in a mild sea, and coming very close to the surface. I suspect that there is some difference in the Honda engines vs. the Yamaha engines that they originally came with. Does anyone know if there is a difference between the Hondas with 25" shaft and the Yamahas with a 25" shaft and/or the way they mount in a Seawind 1000?
__________________

KiminAK is offline   Reply With Quote
Old 23-01-2018, 00:43   #2
Senior Cruiser
 
44'cruisingcat's Avatar

Cruisers Forum Supporter

Join Date: Sep 2006
Posts: 8,020
Images: 69
Re: Seawind 1000 ventilating with Honda Engines

The shafts should be the same length, or near enough to make very little difference.

What size motors?

They probably don't have Hondas version of high thrust props. While not as good as Yamaha s 3:1 gearbox and big props, they're far better than the standard prop when it comes to powering a sailing cat.
__________________

__________________
"You CANNOT be serious!"


John McEnroe
44'cruisingcat is offline   Reply With Quote
Old 23-01-2018, 06:14   #3
Senior Cruiser
 
mikereed100's Avatar

Cruisers Forum Supporter

Join Date: Dec 2005
Location: Cat in Mexico, trawler in Ventura
Boat: 46' custom cat, Roughwater 41 trawler
Posts: 1,651
Images: 2
Re: Seawind 1000 ventilating with Honda Engines

I was going to thank you for using the term "ventilating" instead of "cavitating" in your title, but then you went and burned me in your text. Dude!

FWIW, we used to ventilate horribly when we first launched and the boat was feather light. Now, several years and several tons of toys and tools later, the props are now deep below the surface where they belong. if you buy the Seawind you may have a similar result.
__________________
Mike

www.sailblogs.com/member/rumdoxy

Come to the dark side. We have cookies.
mikereed100 is online now   Reply With Quote
Old 23-01-2018, 06:40   #4
smj
Registered User

Join Date: Nov 2007
Boat: Searunner 38 catamaran
Posts: 3,922
Re: Seawind 1000 ventilating with Honda Engines

Check the procedure for changing the oil filter on the Hondas, then look at the installation on the Seawind and decide if it can be done without pulling the engines.
smj is offline   Reply With Quote
Old 23-01-2018, 06:43   #5
smj
Registered User

Join Date: Nov 2007
Boat: Searunner 38 catamaran
Posts: 3,922
Re: Seawind 1000 ventilating with Honda Engines

Quote:
Originally Posted by smj View Post
Check the procedure for changing the oil filter on the Hondas, then look at the installation on the Seawind and decide if it can be done without pulling the engines.
I love the Seawind 1000's and really like the Honda outboards but I'm not sure if they are a good match.
smj is offline   Reply With Quote
Old 23-01-2018, 11:30   #6
Senior Cruiser
 
44'cruisingcat's Avatar

Cruisers Forum Supporter

Join Date: Sep 2006
Posts: 8,020
Images: 69
Re: Seawind 1000 ventilating with Honda Engines

Quote:
Originally Posted by mikereed100 View Post
I was going to thank you for using the term "ventilating" instead of "cavitating" in your title, but then you went and burned me in your text. Dude!
If they're the standard high speed props and not the high thrust ones, they probably are cavitating.
__________________
"You CANNOT be serious!"


John McEnroe
44'cruisingcat is offline   Reply With Quote
Old 23-01-2018, 12:40   #7
Registered User

Join Date: Aug 2009
Location: Lake Macquarie NSW
Boat: Chamberlin 11.6 catamaran
Posts: 306
Re: Seawind 1000 ventilating with Honda Engines

As other posters have stated, check the props, the Honda high thrust props are four bladed. Incorrect props will tend to make a hole in the water.

Also check to see that there is no electric tilt or long bottom bracket. My Yammie 25 is electric tilt and 25 inch which sounds fine but the bracket containing the hydraulics is huge, about 100mm deeper than the non hydraulic bracket of the Honda 25. What this means is that the motor has to be lifted up 100 to clear the bottom of the nacelle. (In my new installation I totally removed the whole bracket and made a short composite fitting for my new nacelles.) (A cat with twin 25 Hondas with vertical tracks to retrieve engines had a huge electric tilt bracket, even though the motors never tilt, to get electric start. Still, a composite bracket based on the pivot pin would have solved the water scooping problem it had)

So check the Honda does not have electric tilt. They may have come with the electric start. If the do have electric tilt the engines will be about 100mm higher than the Yammie and ventilate a lot. 100mm makes a huge difference. When I made my new nacelles I had them ventilate a few times too many. I pulled them back into the shed and dropped them 70mm. Now they almost never ventilate.

cheers

Phil
catsketcher is offline   Reply With Quote
Old 24-01-2018, 11:09   #8
Registered User

Join Date: Nov 2014
Boat: Iroquois MKII Cat
Posts: 53
Re: Seawind 1000 ventilating with Honda Engines

They should work. The honda XL is actually longer than the yamaha even though they are both called 25". Check to see if they are mounted as low as possible. A bandaid is to add a hydrofoil tail if it will fit. It will allow the prop to raise almost to the surface before sucking air vs sucking air while still down several inches deep.

Quote:
Also check to see that there is no electric tilt or long bottom bracket. My Yammie 25 is electric tilt and 25 inch which sounds fine but the bracket containing the hydraulics is huge, about 100mm deeper than the non hydraulic bracket of the Honda 25. What this means is that the motor has to be lifted up 100 to clear the bottom of the nacelle. (In my new installation I totally removed the whole bracket and made a short composite fitting for my new nacelles.) (A cat with twin 25 Hondas with vertical tracks to retrieve engines had a huge electric tilt bracket, even though the motors never tilt, to get electric start. Still, a composite bracket based on the pivot pin would have solved the water scooping problem it had)
I found the same thing and ordered a tiller model when it was time for another motor (only way to get the manual tilt with smaller bracket) then removed the tiller and added the OEM remote kit.
__________________

VBsail is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Seawind 1000 cavitating with Honda Engines shane malone Monohull Sailboats 15 30-01-2018 14:04
36 Seawind 1000 under $35k with new engines multihuler Multihull Sailboats 1 24-11-2017 15:36
Ideas for ventilating battery compartment slowpoker Construction, Maintenance & Refit 42 09-11-2016 21:53
Honda 25s on a Seawind 1000? Jerry Woodward Multihull Sailboats 17 16-01-2015 04:35
West Marine Windscoop Ventilating Sail Hatch Wind Scoop longonsilver Classifieds Archive 0 27-01-2008 14:15



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 08:23.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.