Motoring range for a 34' with 3GM35F - SailNet Community
Reply
 
LinkBack Thread Tools
post #1 of 15 Old 07-13-2011 Thread Starter
Mondofromredondo
 
Join Date: Nov 2008
Location: Redondo Beach, California
Posts: 190
Thanks: 8
Thanked 5 Times in 5 Posts
Rep Power: 7
 
Motoring range for a 34' with 3GM35F

Hi all,

I'm always reminding myself to take note of the distances I've clocked while motoring and correlate it with fuel burn but I always forget as I'm too excited just to get out on the boat.

Has anyone calculated the range per tank or distance per gallon?

Obviously this would vary from boat / motor combo and conditions.

But I'm looking for a number that would give me a general idea based upon my PSC 34 and 3gm35f in calm conditions at around 2500 RPM. I have a 35 gallon tank with a 3 blade prop as well.

I've noticed that my fuel tank barely drops when I motor 20 miles to Catalina and 20 back. Very fuel miserly.

Thanks to all !!!!
mondofromredondo is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 15 Old 07-13-2011
Courtney the Dancer
 
jrd22's Avatar
 
Join Date: Nov 2000
Location: San Juan Islands., WA, USA
Posts: 3,883
Thanks: 4
Thanked 22 Times in 21 Posts
Rep Power: 15
 
My last boat was 34' and 13,000 lb displacement. We had a 3GM30 and motored at about the same RPM as you do. We used app. 6/10 ths of a gallon per hour and made about 6 knots with an Autoprop. We used .75 gph for planning purposes. Your 35 would burn a bit more I would guess.

John
SV Laurie Anne

1988 Brewer 40 Pilothouse

jrd22 is offline  
Quote Quick Reply Share with Facebook
post #3 of 15 Old 07-13-2011
Senior Member
 
Join Date: Jul 2007
Posts: 117
Thanks: 5
Thanked 3 Times in 3 Posts
Rep Power: 8
 
I keep fairly detailed records and figure I burn .75 gph in my 34 with a 3HM35F. I can't get exact because of occasional running the engine at anchor for the refrigeration and use of the espar heater, but I think that is pretty close. I cruise at 2500-2700 rpm.
johnharch is offline  
Quote Quick Reply Share with Facebook
post #4 of 15 Old 07-13-2011
Crotchety Old Member
 
tomperanteau's Avatar
 
Join Date: Jun 2009
Location: San Pedro Harbor, California
Posts: 873
Thanks: 2
Thanked 3 Times in 3 Posts
Rep Power: 6
 
I have a 3YM30 in my 36 footer (12,000 lbs.), and sometimes have to motor to get to Catalina. I think I calculated somewhere just over 0.5 gallons an hour at around 2500.

Capt'n Tom Living Aboard 50/50

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

S/V Footprints

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Youtube

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


1976 41' Morgan Out Island Sloop. Refitting and redoing her interior for an extended voyage.

1969 Crealock/Columbia 36 Sloop completely refitted in 2000 and new Yanmar in 2006. (for sale)
tomperanteau is offline  
Quote Quick Reply Share with Facebook
post #5 of 15 Old 07-13-2011
Coastal Carolinas
 
Norstar's Avatar
 
Join Date: Aug 2008
Location: Little River, SC
Posts: 96
Thanks: 3
Thanked 4 Times in 2 Posts
Rep Power: 7
 
We have the 3HM35F engine in our 34 and burn .5 gallons an hour on average running between 2200-2500 RPM on a 3 blade 17" Max Prop. Remember the tank shape will not give a good indication of fuel level on the guage due to the V shape. Once it gets to 1/2 tank, it drops pretty fast.

John S
PSC 34 #201
Norstar
Norstar is offline  
Quote Quick Reply Share with Facebook
post #6 of 15 Old 07-13-2011
Member
 
Join Date: Jan 2007
Posts: 59
Thanks: 2
Thanked 1 Time in 1 Post
Rep Power: 9
 
We have a 3H35F in our 34 PSC. We average 0.59 g/h with our e blade Max Prop.

FYI: On a long windless trip across the Gulf of Maine a few years ago I ran the engine 2500 - 2600 and saw fuel consumption go way up. I asked Nigel Calder about this and he suggested that if you want to stretch your tank, drop to a lower RPM. Obviously it will take more time but your fuel consumption will go way down.

Bob S
PSC 34 Alaria
Christmas Cove, Maine
steneck is offline  
Quote Quick Reply Share with Facebook
post #7 of 15 Old 07-14-2011
Member
 
Join Date: Dec 2010
Posts: 62
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 5
 
Graph of fuel gauge reading vs. fuel in gallons for PS34

http://pacificseacraftowners.org/boa.../file.php?id=6

Bob Dugan
1988 PS34 Emerald
Salem, MA // Bustins Island, ME
bobdugan is offline  
Quote Quick Reply Share with Facebook
post #8 of 15 Old 07-14-2011 Thread Starter
Mondofromredondo
 
Join Date: Nov 2008
Location: Redondo Beach, California
Posts: 190
Thanks: 8
Thanked 5 Times in 5 Posts
Rep Power: 7
 
Thanks to all

Sure is nice being able to ask the crowd a question and get so many good answers. Sounds to me like .6 to .7 gph is a reasonable number to use.

Thanks to Bob for the nice graph showing the tank actual volumes when reading the fuel guage. Good idea to print this off and keep a copy on board.
Bob my PSC is also a 1988

Thanks
Keith
mondofromredondo is offline  
Quote Quick Reply Share with Facebook
post #9 of 15 Old 07-14-2011
Member
 
Join Date: Jan 2007
Posts: 59
Thanks: 2
Thanked 1 Time in 1 Post
Rep Power: 9
 
Keith

I don't know if it matters but the graph Bob sent was for a 1992 PSC 34. Morning Call is now Alaria (my boat).

I'm curious if others also find their PSC 34s only hold 28 gallons and not the advertised 32 g.

Bob
steneck is offline  
Quote Quick Reply Share with Facebook
post #10 of 15 Old 07-15-2011
Lou Ann
 
Join Date: Jul 2010
Location: Stone Mountain GA
Posts: 30
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 0
 
Fuel gauge

Hi, I have a 1987 34, #68.

Does anyone have a graph for the standard size fuel tank?

Lou Ann
LouAnn34 is offline  
Quote Quick Reply Share with Facebook
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.


User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
Motoring while sailing ???? DubeJ US West Coast 13 01-04-2013 09:50 PM
Long Range WiFi -- Posting right now using "long range" wireless Bene505 Gear & Maintenance 203 12-01-2012 03:54 PM
C&C 99 motoring speed and a few others BarryL Boat Review and Purchase Forum 19 01-27-2011 04:18 PM
motoring with the hook down Barquito Gear & Maintenance 7 10-14-2010 05:52 PM
Range of Small Engines when motoring...only. PapillonDory General Discussion (sailing related) 6 06-02-2007 01:32 PM

Posting Rules  
You may post new threads
You may 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 On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome