Help with small outboard info - SailNet Community

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > On Board > Gear & Maintenance > Engines > Diesel
 Not a Member? 

Diesel This is a forum dedicated to diesel engines and their applicable accessories.


Like Tree3Likes
Reply
 
LinkBack Thread Tools
  #1  
Old 11-20-2013
Junior Member
 
Join Date: Nov 2013
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
bgorton is on a distinguished road
Help with small outboard info

Newbie here.

Recently bought a 3.8 m fiberglass sailing/rowing dinghy, [url=http://www.boatsales.com.au/features/2008/runabout/feature-classic-dinghies-10803]Feature:,weight around 50 kg, and want to buy an outboard auxiliary to keep peace with the partner and to use for fishing now and again. Options are 2.5 HP at 16 kg and 4 HP at 21 kg. The 4 HP would be sure to handle a bit of chop, a headwind, and some tide, but the lighter motor has obvious appeal if it's hanging of the transom when sailing, and for general functionality.

Could members help me with their experience/knowledge.

It also appears there are formulas for hull speed prop pitch/diameter to ensure the engine is able to operate at maximum efficiency throughout the rev range. I guess the engine dealer will be helpful with this information but any independent advice would also be welcome.

Looking forward to hearing from forum members.

Last edited by bgorton; 11-20-2013 at 07:31 AM.
Reply With Quote Share with Facebook
  #2  
Old 11-20-2013
Faster's Avatar
Just another Moderator
 
Join Date: Sep 2005
Location: New Westminster, BC
Posts: 14,699
Thanks: 68
Thanked 197 Times in 189 Posts
Rep Power: 10
Faster has a spectacular aura about Faster has a spectacular aura about Faster has a spectacular aura about
Re: Help with small outboard info

The 2.5 is probably enough power for what you're going to use it for... but rarely do 2.5 hp engines have a 'neutral' position.. ie they start in gear(one way they minimize the weight). Generally you have to go to 3.5 or 4 to get that function. Our 3.5 Nissan has a neutral but no reverse so you still need to spin the engine around to reverse.. not a problem in our small tender.

Overall, if you want gearshift or at least a neutral, that likely puts the 2.5 out of the equation. If youngsters are involved I like the neutral feature..
__________________
Ron

1984 Fast/Nicholson 345 "FastForward"

".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)
Reply With Quote Share with Facebook
  #3  
Old 11-20-2013
Junior Member
 
Join Date: Oct 2011
Posts: 13
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
millerandy is on a distinguished road
Re: Help with small outboard info

My Honda BF2A (2.0hp) pushes my 1000lb daysailor very well. At low rpms the prop stops spinning as if in neutral. It weighs in at 28lbs.
Reply With Quote Share with Facebook
  #4  
Old 11-20-2013
Senior Member
 
Join Date: Jul 2013
Location: Miami Florida
Posts: 116
Thanks: 0
Thanked 7 Times in 6 Posts
Rep Power: 2
hopcar is on a distinguished road
Re: Help with small outboard info

The Lehr 2.5 hp propane fueled engine has a neutral. I hate engines you have to start in gear.
Reply With Quote Share with Facebook
  #5  
Old 11-20-2013
Faster's Avatar
Just another Moderator
 
Join Date: Sep 2005
Location: New Westminster, BC
Posts: 14,699
Thanks: 68
Thanked 197 Times in 189 Posts
Rep Power: 10
Faster has a spectacular aura about Faster has a spectacular aura about Faster has a spectacular aura about
Re: Help with small outboard info

Quote:
Originally Posted by millerandy View Post
My Honda BF2A (2.0hp) pushes my 1000lb daysailor very well. At low rpms the prop stops spinning as if in neutral. It weighs in at 28lbs.
Cool.. must use some kind of slip clutch??


Quote:
Originally Posted by hopcar View Post
The Lehr 2.5 hp propane fueled engine has a neutral. I hate engines you have to start in gear.
Good to know, thanks. Maybe the manufacturers are changing their ways!
__________________
Ron

1984 Fast/Nicholson 345 "FastForward"

".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)
Reply With Quote Share with Facebook
  #6  
Old 11-20-2013
overbored's Avatar
Senior Member
 
Join Date: Oct 2010
Location: Dana Point, Ca
Posts: 951
Thanks: 1
Thanked 35 Times in 35 Posts
Rep Power: 4
overbored is on a distinguished road
Re: Help with small outboard info

all the new 2.5 hp engines have neutral and forward, no reverse except the honda it has a centrifugal clutch, no reverse
Suzuki is the lightest with a gear box also the cheapest
Honda 29.5 #
Suzuki 30.1 #
mercury 37#
Yamaha and nissan 39#
__________________
"FULL TILT" SOVEREL 33
"GOLD RUSH" PRINDLE 16

Last edited by overbored; 11-20-2013 at 11:24 AM.
Reply With Quote Share with Facebook
  #7  
Old 11-20-2013
TQA's Avatar
TQA TQA is offline
Bombay Explorer 44
 
Join Date: Apr 2009
Posts: 2,571
Thanks: 0
Thanked 47 Times in 43 Posts
Rep Power: 6
TQA is on a distinguished road
Re: Help with small outboard info

Quote:
Originally Posted by millerandy View Post
My Honda BF2A (2.0hp) pushes my 1000lb daysailor very well. At low rpms the prop stops spinning as if in neutral. It weighs in at 28lbs.
I think that Honda is the air cooled version. Before you buy one be sure you have a sea trial, there is NO WAY I could live with the noise.

A lot of small modern outboards are made by Tohatsu and sold under different brands eg Nissan.

Out in the cruising world the Suzuki 2hp 2 stroke is much sought after. They just keep ticking.

The Tohatsu 3.5hp 4 st at 41 lbs is a good buy. Quiet and reliable. N.B. the 2.5 is the same engine just restricted and weighs the same 41 lbs.
Reply With Quote Share with Facebook
  #8  
Old 11-21-2013
Gladrags1's Avatar
Sailor
 
Join Date: Apr 2003
Location: Rock Creek, Maryland
Posts: 575
Thanks: 10
Thanked 12 Times in 12 Posts
Rep Power: 12
Gladrags1 is on a distinguished road
Re: Help with small outboard info

Your boat should have a plate on it telling you the max horsepower it is rated to carry. It's a good idea to follow that.
__________________
Mandolin
Bayfield 36
Sailing out of Rock Creek, Chesapeake Bay
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote Share with Facebook
  #9  
Old 11-21-2013
Junior Member
 
Join Date: Aug 2012
Location: Florida
Posts: 6
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
Florida Sailor is on a distinguished road
Re: Help with small outboard info

I think a 41 kg outboard is too heavy for a 3.8m sailboat. I have a O'Day Daysailer (5.10 m/260 kg empty) and my 3.5 hp Nissan two stroker pushes it very well. Motor weighs 12.5 kg.
Reply With Quote Share with Facebook
  #10  
Old 11-21-2013
Faster's Avatar
Just another Moderator
 
Join Date: Sep 2005
Location: New Westminster, BC
Posts: 14,699
Thanks: 68
Thanked 197 Times in 189 Posts
Rep Power: 10
Faster has a spectacular aura about Faster has a spectacular aura about Faster has a spectacular aura about
Re: Help with small outboard info

Quote:
Originally Posted by Florida Sailor View Post
I think a 41 kg outboard is too heavy for a 3.8m sailboat. I have a O'Day Daysailer (5.10 m/260 kg empty) and my 3.5 hp Nissan two stroker pushes it very well. Motor weighs 12.5 kg.
FWIW we have the same 3.5 Nissan 2 stroke on our tender.. amazingly reliable little engine, has never failed to start in 9 years despite limited use.
christian.hess likes this.
__________________
Ron

1984 Fast/Nicholson 345 "FastForward"

".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)
Reply With Quote Share with Facebook
Reply

Tags
2.5 hp , 4 hp , fairlite , sailing dinghy , small outboard


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Small outboard plastic prop? asdf38 Gear & Maintenance 4 06-24-2013 06:53 PM
Mounting small outboard on stern rail MarkSF Gear & Maintenance 4 06-21-2011 09:28 AM
Small DIESEL outboard?? 3 to 6 hp? SoulVoyage Gear & Maintenance 3 11-03-2010 10:32 AM
Recommendations sought for small outboard Valiente Gear & Maintenance 27 06-29-2007 08:08 PM
Small Electric Start Outboard FRRizzo111 Gear & Maintenance 1 07-06-2005 07:13 AM


All times are GMT -4. The time now is 03:23 AM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.