Reply
 
Thread Tools Search this Thread
 
Old 22 May 2004, 10:40   #1
Seb
Member
 
Country: UK - Wales
Make: Humber
Length: 5m +
Engine: E-tec 50
Join Date: Jul 2003
Posts: 237
Inversion Proofing

Does anybody know how one would go about inversion proofing a diesel engine and engine box for self righting?

Are one way air vents available or arent these a necessity?

Any suggestions appreciated....

Cheers in advance

SEB
__________________

__________________
Seb is offline   Reply With Quote
Old 22 May 2004, 16:24   #2
Member
 
Country: Ireland
Town: Dublin
Boat name: wizzard
Make: REDBAY
Length: 7m +
Engine: 225 optimax
Join Date: Sep 2002
Posts: 835
You have a good chance of inversion proofing a diesel, waterproff the electrical connectors,use denso tape and wrap liberally around, you may need to open at any stage in the future, ensure you use a sealed battery, so no acid spill, try to fabricate a snorkel for the air intake, with a ball cock at the top, like on a snorkel for diving, but much bigger, your fuel system is already sealed, you would need to look at fuel tank , you will loose fuel in a capsize it has a breather of course.Look at how landrovers operate in water, snorkled air intakes, breather piped high up the fuel intake spout etc, I would much more fancy your chances of a restart than with a carburated motor
__________________

__________________
www.dublinsislands.com

WHEN THE CAT IS AWAY THE MICE GO TO REDBAY..............
gavin is offline   Reply With Quote
Old 22 May 2004, 19:30   #3
Member
 
Country: UK - Scotland
Make: HumberOceanOffshore
Length: 8m +
Engine: Volvo KAD300/DPX
Join Date: Oct 2002
Posts: 4,962
Preventing the water which is in the leg from filling the exhaust manifold and thence the cylinders would be a tricky one. Also, the engine is likely to run inverted for a short while and the oil would no longer be at the bottom of the sump..no oil pressure. I can foresee all sorts of difficulties. Best not to capsize.
__________________
JW.
jwalker is offline   Reply With Quote
Old 23 May 2004, 02:08   #4
Member
 
Country: UK - Scotland
Town: Highlands
Boat name: Quicksilver
Make: Quicksilver
Length: 3m +
Engine: Mariner 15hp
Join Date: Aug 2001
Posts: 1,771
Not much help to you Seb, but...

Norton used to build generators for the army that could run upside down/sideways etc. This was so that they would keep running if they were knocked over by an explosion. They were driven by a single cylinder Wankel engine.

Keith Hart
__________________
Small boat - BIG truck

www.photo4x4.co.uk
Keith Hart is offline   Reply With Quote
Old 25 May 2004, 14:19   #5
Seb
Member
 
Country: UK - Wales
Make: Humber
Length: 5m +
Engine: E-tec 50
Join Date: Jul 2003
Posts: 237
Thanks for the response...

As opposed to inversion proofing then, what about making the engine box/bay watertight?

I am always hearing reporters etc slagging diesel RIBs off because the engine isnt protected from swamping and is therefore vunerable. Are vents on the actual box a necessity and if so, how can one make them 'water ingress proof' (or can watertight vents be simply bought)?

Cheers

SEB
__________________
Seb is offline   Reply With Quote
Old 25 May 2004, 14:31   #6
Member
 
Country: UK - Scotland
Make: HumberOceanOffshore
Length: 8m +
Engine: Volvo KAD300/DPX
Join Date: Oct 2002
Posts: 4,962
Aha, now your talking. Done just that, because I agree with them.
__________________
JW.
jwalker is offline   Reply With Quote
Old 25 May 2004, 14:40   #7
Seb
Member
 
Country: UK - Wales
Make: Humber
Length: 5m +
Engine: E-tec 50
Join Date: Jul 2003
Posts: 237
Fancy enlightening me then?
__________________
Seb is offline   Reply With Quote
Old 25 May 2004, 15:11   #8
Member
 
Country: UK - Scotland
Make: HumberOceanOffshore
Length: 8m +
Engine: Volvo KAD300/DPX
Join Date: Oct 2002
Posts: 4,962
Double tubes, one inside the other. Bottom end vaned to limit inrush of water from outboard direction but allows water which enters, to fall out. The air intake causes the the incoming rain water to centrifuge out. The intake to the inner tube is at the top (sideways) opposite the intake on the outer. It'll be better understood from a drawing. No time just now, sorry, I'm off out. The final thing can be seen on Boatmad.
__________________

__________________
JW.
jwalker is offline   Reply With Quote
Reply

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 10:24.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.