Bayliner Bucaneer Cruise Speed Under Power - Page 2 - 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 > General Interest > General Discussion (sailing related)
 Not a Member? 


Reply
 
LinkBack Thread Tools
  #11  
Old 01-23-2013
Senior Member
 
Join Date: Oct 2009
Location: Virginia
Posts: 1,041
Thanks: 3
Thanked 14 Times in 14 Posts
Rep Power: 5
chuck53 is on a distinguished road
Re: Bayliner Bucaneer Cruise Speed Under Power

Quote:
Originally Posted by mad_machine View Post
yes, this is not a gas engine. Diesels thrive on running at WOT fully loaded. It is what they are meant to do
Not sure I want to run at WOT for extended periods, but you are certainly safe running at 85%.
__________________
Catalina 34
Reply With Quote Share with Facebook
  #12  
Old 01-23-2013
chucklesR's Avatar
Senior Member
 
Join Date: Sep 2007
Location: Pasadena Md - Magothy side
Posts: 5,978
Thanks: 10
Thanked 30 Times in 30 Posts
Rep Power: 10
chucklesR is a jewel in the rough chucklesR is a jewel in the rough chucklesR is a jewel in the rough
Re: Bayliner Bucaneer Cruise Speed Under Power

Keep in mind that while diesels like to work, they like to work at no more than 90% continuously (recreational boats are fitted with either light or medium duty diesels, not the tug boat type continuous rated ones).

Your MD7A is rated at 13hp max at 2600 RPM. I'd not run it above 2340 RPM for more than 30 minutes.
If the Volvo and Bayliner engineers fit it out right you should reach your hull speed (
Your B 275 is 24.33 feet at the water line, max speed is 6.65 knots) at that RPM.

Volvo gives two different reduction ratio's - you didn't say you have the S drive (folder) so I'll go with the 1.91 ratio of the other model.

At 1800 rpm that's 942 RPM at the prop.

942 RPM * 11 inch pitch * .48 (standard slippage per Dave Gerr for a displacement boat) = 414 feet per minute - or 6.9 feet per second.
you guessed it 4.7 miles per hour

Funny how math just seems to work out isn't it.
At 2340 RPM
2106 rpm at the prop, 11 pitch = 926 feet per minute 15.4 feet per second ( 9 kts).

Since you can't go 9 knots, you are over pitched. Generally your engine came with a 14x9, just saying.
__________________
Lessons learned are opportunities earned.

Last edited by chucklesR; 01-23-2013 at 12:09 PM. Reason: added
Reply With Quote Share with Facebook
Reply


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
Which dinghy sailboat faster Snipe or Bucaneer 18 ? Curtisfromcarlsbad General Discussion (sailing related) 6 06-26-2011 12:00 AM
Gemini 105MC Slow speed under power TexasWill Boat Review and Purchase Forum 81 07-26-2010 10:26 PM
Cruise speed with Volvo MD6A diesel talbot Gear & Maintenance 7 10-26-2009 10:07 PM
bayliner 25 Alanjp Cruising & Liveaboard Forum 1 02-27-2008 09:50 PM
Electrical Power Recharging Options for Extended Cruise Stormer Cruising & Liveaboard Forum 9 10-10-2006 02:07 PM


All times are GMT -4. The time now is 01:31 PM.

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.