Thread Tools Search this Thread
Old 21 February 2010, 03:14   #1
Country: UK - England
Boat name: Starfish
Make: Cobra
Length: 8m +
Engine: 315 Yanmar
Join Date: May 2007
Posts: 25
COBRA 8.6 Diesel 315HP


I was wondering if any one has any experience of these boats? I am considering buying a good nick 315 Yanmar 2005 one with low hours advertised at £45000. The reason being looking for comfortable cruising and lots of storage space.

On the test run in calm and relatively non tidal water the boat maxed out at 38kts with 4200rpm showing

Boat was moving quite fast through the water at tickover and getting only 38 kts at full rpm of 4200:- According to Yanmar these engines top out at 3800rpm max. What I am thinking is that the prop may not be the correct sizeÖI suspect the prop is too small hence the boat is geared too low, it certainly accelerated well but maybe lost grip at top rpm , hence the extra 400 rpm

Any thoughts as to this would be much appreciated.

Nylon Fasteners Ltd
BINKY 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

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 03:33.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.