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Attaching an engine to an outdrive with a torque tube.

  
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Bruce Taber

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Since: Nov 21, 2003
Posts: 5



(Msg. 1) Posted: Thu Sep 09, 2004 2:31 pm
Post subject: Attaching an engine to an outdrive with a torque tube.
Archived from groups: rec>boats>building (more info?)
I am building a 18" barrelback runabout. Instaed of the standard
straight-shaft inboard drive, I am considering a modified I/O setup.
I would purchase a used Mercuiser 3.0L I/O. The engine would be
installed in the center of the boat as is normal for this type of boat
and is required for proper balance. The outdrive would be installed
on the transom. The driveshaft of the motor would be attached to the
outdrive with an extended drive shaft (torque tube), about 4' long.
Has anyone ever seen this done? Any comments or suggestions are
appreciated.

 >> Stay informed about: Attaching an engine to an outdrive with a torque tube. 
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Steve Lusardi

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Since: Jun 22, 2003
Posts: 163



(Msg. 2) Posted: Sat Sep 11, 2004 12:22 am
Post subject: Re: Attaching an engine to an outdrive with a torque tube. [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
That is very common, I would make up a shaft assy. from a automotive drive
shaft out of a bone yard, but that would not be my first choice. My first
choice would be a Z drive. That would position the engine and prop in the
right place and maintain the clean transom that all barrelbacks should have.
Steve
"Bruce Taber" <bruce.taber.RemoveThis@nrc.gc.ca> wrote in message
news:1c19e0bc.0409091231.7bb2e387@posting.google.com...
 >I am building a 18" barrelback runabout. Instaed of the standard
 > straight-shaft inboard drive, I am considering a modified I/O setup.
 > I would purchase a used Mercuiser 3.0L I/O. The engine would be
 > installed in the center of the boat as is normal for this type of boat
 > and is required for proper balance. The outdrive would be installed
 > on the transom. The driveshaft of the motor would be attached to the
 > outdrive with an extended drive shaft (torque tube), about 4' long.
 > Has anyone ever seen this done? Any comments or suggestions are
 > appreciated.<!-- ~MESSAGE_AFTER~ -->

 >> Stay informed about: Attaching an engine to an outdrive with a torque tube. 
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Rob6

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Since: Feb 26, 2004
Posts: 10



(Msg. 3) Posted: Sun Sep 12, 2004 12:21 am
Post subject: Re: Attaching an engine to an outdrive with a torque tube. [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
bruce.taber.DeleteThis@nrc.gc.ca (Bruce Taber) wrote in message news:<1c19e0bc.0409091231.7bb2e387.DeleteThis@posting.google.com>...
 > I am building a 18" barrelback runabout. Instaed of the standard
 > straight-shaft inboard drive, I am considering a modified I/O setup.
 > I would purchase a used Mercuiser 3.0L I/O. The engine would be
 > installed in the center of the boat as is normal for this type of boat
 > and is required for proper balance. The outdrive would be installed
 > on the transom. The driveshaft of the motor would be attached to the
 > outdrive with an extended drive shaft (torque tube), about 4' long.
 > Has anyone ever seen this done? Any comments or suggestions are
 > appreciated.

Centaflex make a series of shafts/rubber couplings that do exactly
what you want to do. AGM series. I'm doing exactly the same with an
8 ft 5 inch hollow shaft. Hollow shafts have the advantage that
longer lengths can be used without a support bearing.<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Attaching an engine to an outdrive with a torque tube. 
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Brian Whatcott

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Since: Jun 22, 2003
Posts: 409



(Msg. 4) Posted: Sun Sep 12, 2004 12:22 pm
Post subject: Re: Attaching an engine to an outdrive with a torque tube. [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
On 11 Sep 2004 23:21:49 -0700, colinstone RemoveThis @hotmail.com (Rob) wrote:

 >bruce.taber@nrc.gc.ca (Bruce Taber) wrote in message news:<1c19e0bc.0409091231.7bb2e387 RemoveThis @posting.google.com>...
  >> I am building a 18" barrelback runabout. Instaed of the standard
  >> straight-shaft inboard drive, I am considering a modified I/O setup.
  >> I would purchase a used Mercuiser 3.0L I/O. The engine would be
  >> installed in the center of the boat as is normal for this type of boat
  >> and is required for proper balance. The outdrive would be installed
  >> on the transom. The driveshaft of the motor would be attached to the
  >> outdrive with an extended drive shaft (torque tube), about 4' long.
  >> Has anyone ever seen this done? Any comments or suggestions are
  >> appreciated.
 >
 >Centaflex make a series of shafts/rubber couplings that do exactly
 >what you want to do. AGM series. I'm doing exactly the same with an
 >8 ft 5 inch hollow shaft. Hollow shafts have the advantage that
 >longer lengths can be used without a support bearing.

Get a brochure via this URL:
<http://www.engineeringtalk.com/news/cen/cen107.html>

Brian W
- no beneficial relation<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Attaching an engine to an outdrive with a torque tube. 
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Tony Blair

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Since: Sep 13, 2004
Posts: 1



(Msg. 5) Posted: Mon Sep 13, 2004 2:22 pm
Post subject: classic christ-craft plans [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
Do you know any classic mahogany power boat plans source?
Thanks
 >> Stay informed about: Attaching an engine to an outdrive with a torque tube. 
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Bruce Taber

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Since: Nov 21, 2003
Posts: 5



(Msg. 6) Posted: Wed Sep 15, 2004 6:07 am
Post subject: Re: Attaching an engine to an outdrive with a torque tube. [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
Steve, What do you mean by a Z drive? I thought a Z drive was a
British term for an outdrive unit. I stated that I was planning to
put an outdrive on my transom but you state that a Z drive would be
better because it would maintain the clean transom look. I'm
confused.

"Steve Lusardi" <stevenospam.TakeThisOut@lusardi.de> wrote in message news:<chts0d$mhg$06$1@news.t-online.com>...
 > That is very common, I would make up a shaft assy. from a automotive drive
 > shaft out of a bone yard, but that would not be my first choice. My first
 > choice would be a Z drive. That would position the engine and prop in the
 > right place and maintain the clean transom that all barrelbacks should have.
 > Steve
 > "Bruce Taber" <bruce.taber.TakeThisOut@nrc.gc.ca> wrote in message
 > news:1c19e0bc.0409091231.7bb2e387@posting.google.com...
  > >I am building a 18" barrelback runabout. Instaed of the standard
  > > straight-shaft inboard drive, I am considering a modified I/O setup.
  > > I would purchase a used Mercuiser 3.0L I/O. The engine would be
  > > installed in the center of the boat as is normal for this type of boat
  > > and is required for proper balance. The outdrive would be installed
  > > on the transom. The driveshaft of the motor would be attached to the
  > > outdrive with an extended drive shaft (torque tube), about 4' long.
  > > Has anyone ever seen this done? Any comments or suggestions are
  > > appreciated.<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Attaching an engine to an outdrive with a torque tube. 
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