Go Back   Cruiser Log World Cruising & Sailing Forums > Cruising Forums > The Bosun's Locker > Engines | Propulsion | Generators
Cruiser Wiki

Join Cruiser Log Today

Reply
 
Thread Tools Search this Thread Display Modes
 
Old 02-09-2008, 11:19 PM   #15
Moderator
 
redbopeep's Avatar
 
Join Date: Jun 2007
Home Port: Washington DC
Vessel Name: SV Mahdee
Posts: 3,185
Angry

From the log of Liz onboard Swell (which many of us follow!):

"As we changed the oil in my main engine after a basic engine overhaul, Marcos suddenly looked up at me like he'd seen a ghost. "Your motor mount," he gasped. "It's broken!" "No." I shook my head stubbornly. "It can't be." But I shoved my hand into the darkness and felt the jagged sharpness of the severed mount. The one on the other side was the same. I couldn't believe it. Thankfully, due to the configuration of my motor, the universal joint of the v-drive had absorbed the motor's 2" drop when the mounts had broken, so there was no damage to the drive shaft. It did slightly damage my moral, though"

This post can be found here: link to blog

Dunno...I'm thinking more and more about that cable system...
__________________

__________________
"Do or do not. There is no try." - Yoda

What we're doing - The sailing life aboard and the Schooner Chandlery.

redbopeep is offline   Reply With Quote
Old 06-03-2009, 12:05 AM   #16
Ensign
 
Join Date: Apr 2009
Posts: 6
Default

Well i have my perkins 4236 400 kg mounted to a steel plate in the stringers, why?? imagine a 360 roll and 400 kg holding with the mount screws directly to the stringers ,, badd!!!

Many builders just screw the engine mounts to wood encapsulated stringers , is fine if the boat is up right , but in a 360 roll just imagine what hapen.
__________________

__________________
neilpride is offline   Reply With Quote
Old 06-03-2009, 11:11 AM   #17
Admiral
 
MMNETSEA's Avatar
 
Join Date: Oct 2004
Posts: 3,067
Default

True, your Perkins with its gearbox and other components comes close to 1/2 a ton.

The description given "mounted to a steel plate in the stringers" Could you describe more fully what this means ? What are the engine bearers made of ? how are mountings attached to the bearers ? How are the bearers bonded to the to the hull ?
__________________
MMNETSEA is offline   Reply With Quote
Old 06-05-2009, 06:37 PM   #18
Ensign
 
Join Date: Apr 2009
Posts: 6
Default

Well we cut the stringers in the top, and made a steel plate to put in top with 1,5 cm diference betwen the bottom of the steel plate and the top of the stringer, the plate is atached to the bed with bolts and nuts to screwed in the mid sections of the stringer, is a lot off work calibrated the gear with the coupling in the shaft, butt finally i have my iron very secured in the engine bed.
__________________
neilpride is offline   Reply With Quote
Old 06-05-2009, 08:16 PM   #19
Moderator
 
redbopeep's Avatar
 
Join Date: Jun 2007
Home Port: Washington DC
Vessel Name: SV Mahdee
Posts: 3,185
Default

Quote:
Originally Posted by neilpride View Post
Well we cut the stringers in the top, and made a steel plate to put in top with 1,5 cm diference betwen the bottom of the steel plate and the top of the stringer, the plate is atached to the bed with bolts and nuts to screwed in the mid sections of the stringer, is a lot off work calibrated the gear with the coupling in the shaft, butt finally i have my iron very secured in the engine bed.
The limiting factor you probably have is the strength of of the engine mount bolts--are you aware of their limitations? material properties?
__________________
"Do or do not. There is no try." - Yoda

What we're doing - The sailing life aboard and the Schooner Chandlery.

redbopeep is offline   Reply With Quote
Old 06-06-2009, 01:45 AM   #20
Admiral
 
MMNETSEA's Avatar
 
Join Date: Oct 2004
Posts: 3,067
Default

"Well we cut the stringers in the top, and made a steel plate to put in top with 1,5 cm diference betwen the bottom of the steel plate and the top of the stringer, the plate is atached to the bed with bolts and nuts to screwed in the mid sections of the stringer"

Forgive me, but I am having difficulty understanding what is meant by :-

"we cut the stringers in the top "

From the description I have drawn a sketch - which I hope generally matches the words :-

Stringer_stress.jpg

Question #1 What was the height of the Stringer ?

#2 How deep a cut was made in the Stringer ?

#3 How many stringers were used to support the Steel Plate ?

#4 What was used to stand off the Steel Plate from the Stringer/s - bushes ? Washers?

Caution : If the Plate has been attached to the Stringers as shown in the sketch - there may be potential for stress to develop between the hull and the stringer/s below and around the area where the plate has been screwed to stringer/s.
__________________
MMNETSEA is offline   Reply With Quote
Old 06-06-2009, 05:17 PM   #21
Ensign
 
Join Date: Apr 2009
Posts: 6
Default

NO,no, the picture is wrong, i have a csy 44 , and the engine bed have 2 stringers , one in the port side and the other one in starboard,the stringers in the csy hare very well made , consist of a long piece of douglas wood incapsulated in heavy fiberglass, the perkins rest in this 2 stringers by engine mounts screwed directly in the glass , not good idea in a 360 roll, i take out the engine for a overhaul and made a steel plate for each side , the plate is L CONFIGURATION , we cut about 2 centimeters off the top for the stringer and reglassed , now the plate rest in the stringer in a L FORM , we drill about 6 holes along the stringer and fit the steel plate with heavy bolts and nuts and a backing plate , the engine mounts now rest in the steel plate with a screw pass in the plate and underneath with a bolt , and the nut under the plate, remenber we cut the top of the stringer , so we have about 1, 5 cm off diference betwen the plate and the stringer , now the engine run smoother , and is safely in place , and thanks to the heavy construction of the CSY 44 , no strees points. i hope is clear for you, i try to the prepare a picture soon.
__________________
neilpride is offline   Reply With Quote
Old 06-06-2009, 10:55 PM   #22
Admiral
 
MMNETSEA's Avatar
 
Join Date: Oct 2004
Posts: 3,067
Default

Thanks , that's clear - sounds good - much stronger.

My initial understanding was the reference to "steel plate" which in the normally accepted definition is flat.

Whereas "angle iron" is what was used to connect the engine mountings to the stringer bearers.
__________________

__________________
MMNETSEA is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
The 12 Meter Trimaran "monoah" Washed Up On Uonuku Island Trim50 General Cruising Forum 6 12-21-2014 02:02 PM
Anchor Chain Cleaning Device Aka "gunk Buster" redbopeep Other Equipment 6 02-17-2010 05:05 PM
Things That Go "bump" Well...sometimes "squeak" In The Night redbopeep General Cruising Forum 0 12-13-2009 05:21 AM
Yacht " Illusion " Abandoned Off Australia East Coast Lighthouse Overdue & Distress Reports 1 11-12-2008 08:45 PM
Humor And Dealing With The Potential "stressors" Of A Voyaging Life redbopeep General Cruising Forum 2 09-22-2008 09:20 PM

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

RV & Travel Trailer Communities

Our RV & Travel Trailer sites encompasses virtually all types of Recreational Vehicles, from brand-specific to general RV communities.

» More about our RV 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


All times are GMT. The time now is 05:05 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2016, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.0