Thread Tools Search this Thread
Old 31 March 2014, 06:34   #1
HughN's Avatar
Country: UK - England
Town: Littlehampton, W Sx
Length: no boat
MMSI: 235101591
Join Date: Jan 2012
Posts: 732
Fuel consumption

Does anybody have any real-word opinion on whether the "5l per hour per 10hp of power at WOT" is reasonable?


"Can ye model it? For if ye can, ye understand it, and if ye canna, ye dinna!" - Lord kelvin
HughN is offline   Reply With Quote
Old 31 March 2014, 07:30   #2
Country: UK - Scotland
Boat name: Wildheart
Make: Humber/Delta Seasafe
Length: 5m +
Engine: Merc 60 Clamshell
MMSI: 235068449
Join Date: Apr 2007
Posts: 4,539
Litre / nautrical mile seems a good basis for trip planning as per a few threads on here, and it certainly works for my set-up.

I get 0.83L/NM averaged over a good few hundred miles since the rebuild (leaving out the 10 hrs of running in at low RPM & high oil levels)

The hard data is at home, I'll post back later with the fuel /hr figures and the average speed to go with that 0.83L. What I can say for sure is it isn't at WOT. (4.7K-ish average cruising rpm vs 5.6K nominal max)

I also have figues for the latter days of my old Suz which is in your HP bracket which I'll dig out.

In the meantime I assume you have searched for the previous threads? - there's a lot in here on this subject.

9D280 is offline   Reply With Quote
Old 01 April 2014, 17:03   #3
Locozodiac's Avatar
Country: Other
Town: Lima-Peru
Boat name: Nautile
Make: Sea Rider Boats
Length: 4m +
Engine: Tohatsu 18 /30 HP
Join Date: Sep 2007
Posts: 1,706
Are you inquiring about 2 or 4 strokes fuel comsumption ? If 2 strokes fuel consumption is usually 12% of rated HP at wot on flat calm no wind waters, running at near max wot rpm stated for that engine.

4 strokes swallows much less.

Happy Boating
Locozodiac is offline   Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 00:55.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.