Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 17-11-2014, 13:13   #1
Registered User

Join Date: Jul 2010
Location: Little Rock, AR
Boat: J24 freight puppy
Posts: 13
Who knows what this is

I bought a Trintella 38 damaged in hurricane sandy. The stuffing box is oil lubricated at both ends of the prop shaft with some sort of gear oil. Who knows what this is?!
Attached Thumbnails
Click image for larger version

Name:	image.jpg
Views:	249
Size:	89.3 KB
ID:	91826  
__________________

__________________
RayLChase is offline   Reply With Quote
Old 17-11-2014, 13:21   #2
Senior Cruiser
 
Sailmonkey's Avatar

Cruisers Forum Supporter

Join Date: Sep 2009
Location: Houston
Boat: '76 Allied Seawind II, 32'
Posts: 5,781
Re: Who knows what this is

It looks like a version of the python drive. Basiclly a CV joint to decouple the engine from the prop shaft to alleviate alignment problems and reduce vibration.
__________________

__________________
Sailmonkey is online now   Reply With Quote
Old 17-11-2014, 13:32   #3
Registered User
 
Hoofsmit's Avatar

Join Date: Jul 2013
Location: cornwall uk
Posts: 569
Re: Who knows what this is

Yep...... google marine shaft flexible coupling


Sent from my iPad.......i apologise for the auto corrects !!!
__________________
Hoofsmit is offline   Reply With Quote
Old 17-11-2014, 13:36   #4
Registered User
 
Hoofsmit's Avatar

Join Date: Jul 2013
Location: cornwall uk
Posts: 569
Re: Who knows what this is

Not this one, but similar



Home Maritex bearings QuicKutter™ Marine couplings
Powertrain marine couplings
Marine Joint / hydradrive Tel: +44 (0)1822 852466



Maritex downloads


The Powertrain Marine Joint 115 and 130
for Diesel engines up to 600 HP
CV/thrust coupling for use between marine transmissions and propeller shafts
The technology is based on the standard front wheel drive joint found in most modern cars
Alignment problems non-existing
Takes up to 8 degrees deflection
Thrust forces no problem
Significant reduction of noise
Mechanical transmission, no rubber
A revolutionary patented idea
Very simple installation!


The Powertrain range of couplings for use between marine transmission and propeller shafts consists of two separate systems. The Hydradrive (HD) series consists of 6 different models covering engine powers up to 475BHP. The CV joint is at the heart of Hydradrive technology with two separate CV joints that move independently of each other and provide a maximum angular shaft misalignment of 16 degrees. The joint transmits engine power to the propeller and the thrust bearing which is bolted to the hull and absorbs forward and aft propulsion forces which reduces noise and vibration by up to 90%. The new Marine Joint (MJ) flexible coupling is an excellent solution to the engine/propeller shaft alignment problem. The joint is very simple to install and will offer up to a maximum 8 degree misalignment down angle. The MJ series has three separate models for engine powers up to a maximum of 600 BHP and is supplied complete with an adaptor flange to mate with transmission coupling.


















New products due shortly please contact us to discuss marine couplings thurst bearings and double CV couplings







Sent from my iPad.......i apologise for the auto corrects !!!
__________________
Hoofsmit is offline   Reply With Quote
Old 17-11-2014, 13:54   #5
Registered User

Join Date: Aug 2014
Posts: 170
Re: Who knows what this is

I have installed a few engines that had flex couplings. I wish all boats came with them. They do allow for a little misalignment, which is a good thing from some of the work I have witnessed from a few marina engine mechanics.
__________________
Old Snipe is offline   Reply With Quote
Old 17-11-2014, 14:14   #6
Registered User

Join Date: Jul 2010
Location: Little Rock, AR
Boat: J24 freight puppy
Posts: 13
Re: Who knows what this is

The CV joint and the thrust bearing appear to be an older Aquadrive system. The coupling was green before I removed it and machined several broken bolt heads off. The part more interesting and unknown is the oil cooled shaft. Most are water cooled. Has anybody even seen or operated a boat with an oil cooled shaft rather than water cooled?!
__________________
RayLChase is offline   Reply With Quote
Old 17-11-2014, 14:20   #7
Registered User
 
Hoofsmit's Avatar

Join Date: Jul 2013
Location: cornwall uk
Posts: 569
Re: Who knows what this is

Ray
sorry , misunderstood your query
Never seen a oil filled ? But seen a few with grease pumps attached, has it got a reservoir ?




Sent from my iPad.......i apologise for the auto corrects !!!
__________________
Hoofsmit is offline   Reply With Quote
Old 17-11-2014, 14:28   #8
Registered User

Join Date: Jul 2010
Location: Little Rock, AR
Boat: J24 freight puppy
Posts: 13
Re: Who knows what this is

Yes it does have a reservoir. Holds about a gallon of oil. The quantity has not moved in 2000 miles/300 hours of motoring. I think it should have.

I motored the boat from NY to Memphis, TN after patching some holes and overhauling the motor.

I would have inspected the parts and overhauled the tube except nobody knew what it was. I became afraid to open it and damage something I could not replace!!
__________________
RayLChase is offline   Reply With Quote
Old 17-11-2014, 14:30   #9
Registered User
 
Hoofsmit's Avatar

Join Date: Jul 2013
Location: cornwall uk
Posts: 569
Re: Who knows what this is

Trying to figure this bearing out ! If it's oil filled ? I would have thought it would require wipe seals , so would be interested in others views more knowledgeable than me.
On a second point, she seems to have some serious misalignment on that shaft ! Or is it the photo?



Sent from my iPad.......i apologise for the auto corrects !!!
__________________
Hoofsmit is offline   Reply With Quote
Old 17-11-2014, 14:33   #10
Registered User

Join Date: Jul 2010
Location: Little Rock, AR
Boat: J24 freight puppy
Posts: 13
Re: Who knows what this is

Photo..shaft turns down out of the CV joint
__________________
RayLChase is offline   Reply With Quote
Old 17-11-2014, 14:41   #11
Registered User

Join Date: Dec 2005
Location: WNA
Boat: Dufour 35
Posts: 3,249
Re: Who knows what this is

Have a look at this thread Oil Filled Prop Shaft

It's not a question of cooling, the water does that.It's about lubrication.
There are double set of seals to contain the oil.
The main maintenance thing is to never let the oil tank run out of oil.
These seals are regarded as very reliable.

I once did a delivery of a 55 foot steel yacht with this setup. There was also a walk in engine room with a Gardner....
__________________
cagney is offline   Reply With Quote
Old 17-11-2014, 15:20   #12
Registered User
 
Hoofsmit's Avatar

Join Date: Jul 2013
Location: cornwall uk
Posts: 569
Re: Who knows what this is

Cagney

Thanks for the link, you learn something everyday, thanks


Sent from my iPad.......i apologise for the auto corrects !!!
__________________

__________________
Hoofsmit is offline   Reply With Quote
Reply

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

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
who knows the PANDORA 22 herve31 Monohull Sailboats 2 12-06-2008 11:15
anybody knows smthng certain about NILAR ? vacendak Electrical: Batteries, Generators & Solar 2 30-05-2008 01:17
Who knows about Beneteau First 30s? JMRmarinero Monohull Sailboats 0 13-06-2007 12:29
WHO KNOWS A GOOD WEATHER SITE? Bob Norson Off Topic Forum 14 13-10-2006 06:33



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 16:22.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.