Utility build

Outboard designs up to 14'

Moderator: ttownshaw

User avatar
BarnacleMike
Posts: 1031
Joined: Wed Sep 21, 2011 7:47 am
Location: North Georgia / Chattanooga Area
Contact:

Re: Utility build

Post by BarnacleMike » Sun Jul 24, 2016 6:11 pm

Thank you, Carl!

I'm kind of on the fence about bolting on the motor. I'm taking a little time to consider Chris' points on tongue weight & trailering. For now, I'll just plan on another backache for my next trip to the lake! :lol:
-Michael

Built Utility "Perseverance" — completed Aug 2016
Currently building a Zip
My Boatbuilding Blog: http://barnaclemikeboats.blogspot.com/
My Website of Boat Photos: https://michaelsmaddox.wordpress.com

User avatar
BarnacleMike
Posts: 1031
Joined: Wed Sep 21, 2011 7:47 am
Location: North Georgia / Chattanooga Area
Contact:

Re: Utility build

Post by BarnacleMike » Sat Aug 06, 2016 2:14 pm

With the work on the bilge pump finished, I declare Perseverance DONE.

Here are some photos from the lake today. Once I get some better shots, I'll post something in the "Launching Ramp."
Attachments
IMG_1391.jpg
IMG_1388.jpg
IMG_1387.jpg
-Michael

Built Utility "Perseverance" — completed Aug 2016
Currently building a Zip
My Boatbuilding Blog: http://barnaclemikeboats.blogspot.com/
My Website of Boat Photos: https://michaelsmaddox.wordpress.com

User avatar
Bill Edmundson
Posts: 11149
Joined: Wed Nov 23, 2005 6:45 am
Location: Birmingham, AL, USA
Contact:

Re: Utility build

Post by Bill Edmundson » Sat Aug 06, 2016 2:23 pm

Michael

Well done! Ready to see her next month! I'm sure ready to see mine done also.

Bill
Mini -Tug, KH Tahoe 19 & Bartender 24 - There can be no miracle recoveries without first screwing up.
Tahoe 19 Build

User avatar
mrintense
Posts: 2959
Joined: Thu Jun 10, 2010 11:22 am
Location: Austin, Texas
Contact:

Re: Utility build

Post by mrintense » Sat Aug 06, 2016 3:07 pm

Very nice Mike and congratulations. I can imagine it feels really good to have completed this after all the things you've gone through getting to this point. She looks beautiful. Nice work!! :D :D
Carl
a.k.a. Clipper

Crafting a classically styled Vera Cruise named "Some Other Time"

Clipper's Vera Cruise Build

User avatar
Roberta
Posts: 6172
Joined: Tue Jul 31, 2007 5:23 pm
Location: East Troy, Wisconsin

Re: Utility build

Post by Roberta » Sat Aug 06, 2016 3:35 pm

Looks great! !! Have many hours of fun.
Roberta "Queen of the Boat Builders"
Built Zip "Oliver IV", Super Spartan "Jimmy 70", and Torpedo "The Glen L".

User avatar
vupilot
Posts: 3377
Joined: Wed Apr 15, 2009 7:36 am
Location: Indy
Contact:

Re: Utility build

Post by vupilot » Sat Aug 06, 2016 6:47 pm

Really fine job Michael. Cant wait to see it. I really think this design should be more popular. Its such a simple, fun boat.

largej
Posts: 72
Joined: Mon Dec 16, 2013 1:47 pm
Location: Sparks Nevada

Re: Utility build

Post by largej » Mon Aug 08, 2016 8:37 am

Sweet - Nice job and thanks for all the hints and suggestions your posts provided me with my Utility build. I will have mine out of the basement soon - Just finishing the Bilco Door entrance.
Jim
Attachments
A Way Out.JPG

User avatar
hoodman
Posts: 1880
Joined: Thu Nov 10, 2011 8:48 am
Location: Lafayette, IN

Re: Utility build

Post by hoodman » Thu Aug 11, 2016 7:28 am

I know its only 8 horsepower, but I would bolt it on for sure.
Matt

Building a Geronimo......!
viewtopic.php?f=2&t=25139

User avatar
hoodman
Posts: 1880
Joined: Thu Nov 10, 2011 8:48 am
Location: Lafayette, IN

Re: Utility build

Post by hoodman » Thu Aug 11, 2016 7:30 am

By the way your boat looks awesome! I love the way it has come together. I think that wiring is about as neat as it can be in an open boat without any places to hide it. The decal that you got for the name is really classy.
Matt

Building a Geronimo......!
viewtopic.php?f=2&t=25139

User avatar
BarnacleMike
Posts: 1031
Joined: Wed Sep 21, 2011 7:47 am
Location: North Georgia / Chattanooga Area
Contact:

Re: Utility build

Post by BarnacleMike » Sun Aug 14, 2016 5:54 pm

Thank you, Matt and everyone!

I took it back to the lake yesterday, with intermittent winds that quickly blew up some pretty good chop... though not quite as much as the first time I had it out this summer (THAT was just plain nerve-racking). Yesterday we got showered pretty good with spray coming over the deck, but it was actually kind of fun.

The Utility is definitely not a rough-water boat, but the more I get used to it, the more I'm learning to trust it. After some trim adjustments, I'm still finding that the little 8hp motor is a little underpowered for both me and my son. It does better with me and my daughter, and will plane. However, going into a headwind, you might as well forget wide-open throttle.

With just me in the boat, the 8hp is great.

I'm starting to consider a different prop. What's on it now is a 3-blade prop that is probably 7" pitch (I haven't taken it off to look for a stamp yet)... standard Tohatsu/Nissan equipment for that motor. I've seen 3-blade, 6" pitch props available... as well as a 4-blade 7" pitch. I'm thinking of trying the 4-blade prop first to see if it will provide enough added thrust to get on plane with both me and my son aboard. Any thoughts on props?
-Michael

Built Utility "Perseverance" — completed Aug 2016
Currently building a Zip
My Boatbuilding Blog: http://barnaclemikeboats.blogspot.com/
My Website of Boat Photos: https://michaelsmaddox.wordpress.com

User avatar
Bill Edmundson
Posts: 11149
Joined: Wed Nov 23, 2005 6:45 am
Location: Birmingham, AL, USA
Contact:

Re: Utility build

Post by Bill Edmundson » Sun Aug 14, 2016 7:09 pm

Michael

I talked with Tony at HB and he said you were out. All boats have their limits. But, from what I've seen the utility does pretty good for it's size!

Bill
Mini -Tug, KH Tahoe 19 & Bartender 24 - There can be no miracle recoveries without first screwing up.
Tahoe 19 Build

User avatar
vupilot
Posts: 3377
Joined: Wed Apr 15, 2009 7:36 am
Location: Indy
Contact:

Re: Utility build

Post by vupilot » Mon Aug 15, 2016 8:58 am

Michael. I think youll get used to it. The little Utility I had would take about the same conditions as my Zip, which really isnt alot. If the wind is causing white caps, it stops being fun for either boat. A good headwind chop definitely makes for a rougher ride but dont worry, the boat can take more than your rear end can.

As for the prop, definitely find out what you have. My 8hp 2 stroke and the 15hp four stroke both came with 9x9 props. That worked great for heavier loads but with just me I would over rev so I bought one size up too. I think that was a 9x10.

User avatar
BarnacleMike
Posts: 1031
Joined: Wed Sep 21, 2011 7:47 am
Location: North Georgia / Chattanooga Area
Contact:

Re: Utility build

Post by BarnacleMike » Sun Apr 02, 2017 11:24 am

vupilot wrote:As for the prop, definitely find out what you have. My 8hp 2 stroke and the 15hp four stroke both came with 9x9 props. That worked great for heavier loads but with just me I would over rev so I bought one size up too. I think that was a 9x10.
I did the spring maintenance on my motor this weekend. I was anxious to remove the prop to see what markings might be on it. The one and only marking was on one of the blades, and was simply "F7."

My motor is a Nissan 8hp 4-stroke, which is made by Tohatsu. Apparently Tohatsu is no longer marketing motors under the "Nissan Marine" brand, so I looked around online for info on Tohatsu props. A chart on their website shows an 8.9" diameter, 7" pitch prop as the only standard equipment on their 8hp 4-stroke. So, in all probability... that's what I've got.
Attachments
IMG_2646.jpg
IMG_2647.jpg
TohatsuPropellers.png
-Michael

Built Utility "Perseverance" — completed Aug 2016
Currently building a Zip
My Boatbuilding Blog: http://barnaclemikeboats.blogspot.com/
My Website of Boat Photos: https://michaelsmaddox.wordpress.com

User avatar
BarnacleMike
Posts: 1031
Joined: Wed Sep 21, 2011 7:47 am
Location: North Georgia / Chattanooga Area
Contact:

Re: Utility build

Post by BarnacleMike » Sun Apr 02, 2017 7:00 pm

So, the big question is whether or not the 4-blade, 7" pitch prop would provide enough added thrust to plane the boat with my boy and me?

Or, would the 3-blade, 6" pitch be more effective?
-Michael

Built Utility "Perseverance" — completed Aug 2016
Currently building a Zip
My Boatbuilding Blog: http://barnaclemikeboats.blogspot.com/
My Website of Boat Photos: https://michaelsmaddox.wordpress.com

User avatar
vupilot
Posts: 3377
Joined: Wed Apr 15, 2009 7:36 am
Location: Indy
Contact:

Re: Utility build

Post by vupilot » Sun Apr 02, 2017 7:53 pm

I would stick with a 3 blade. Fewer blades are actually most efficient. In theory the 6 pitch will be slower than the 7 pitch at same rpm but because we found in your testing you are not getting max rpm with the weight of two aboard the 1" lower pitch should increase your rpm by about 300 rpm to where you are making some more power. If I remember right you were getting about 4800 rpm with two aboard and 5600 rpm solo. Problem is then you have to change props again running solo or youll be over- revving. And the experiment costs a pricey prop, but I think you are on the right track going down an inch for two aboard.

Post Reply

Return to “Small outboards”