Like Tree0Likes

staggered engines

Reply
Old 10-03-2004, 09:32 PM
  #11
Commercial Member
Commercial Member
 
mcraymond3's Avatar
 
Join Date: Jan 2003
Location: Jacksonville NC
My Boats: 48 Fountain EC
Posts: 1,305
Default Re: staggered engines

I like staggered better.
mcraymond3 is offline  
Reply With Quote
Old 10-03-2004, 11:01 PM
  #12
Registered
 
Reed Jensen's Avatar
 
Join Date: Dec 2003
Location: Los Angeles California
Posts: 8,301
Default Re: staggered engines

Quote:
Originally Posted by glassdave
anybody have pics of that setup? i have heard Pat W. talk about it on the board here and it sounds very interesting.
I think I have a few pics.... lemme see........
Attached Thumbnails
staggered engines-nigelsinlinepackage.jpg  
Reed Jensen is offline  
Reply With Quote
Old 10-03-2004, 11:05 PM
  #13
Platinum Member
Platinum Member
 
mcollinstn's Avatar
 
Join Date: Sep 2001
Location: tn
My Boats: 1991 F311SR1
Posts: 5,491
Default Re: staggered engines

Oh, a staggered driveline (forward motor) won't bolt up properly to an Imco box due to lack of inside support bearing. Would require custom jackshaft.

Staggered driveline will work just dandy with a Stellings box.

Not exactly sure how it is handled with the forward motor and the ITS box...

At any rate, it shouldn't be a huge deal to make any of the three work with a staggered setup.

The Weissmann inline setup boasts some even cooler techno points. The "reversed" engine cives a true counterrotation of the crankshafts which truly cancels the engine's torque moment. Most conventional sterndrive installations still have the engines both rotating the same direction, even though the props spin opposite. The weissmann allows standard engine rotation (which allows standard camshafts, standard windage trays, standard oilpans, standard piston pin offsets, etc.) yet delivers the power off the "wrong end" of the motor for true counterrotation.

Also the transmission and drive setup REALLY let you lower the engines all the way to the fiberglass for some record setting low CG ability.

Aside from that, the Weissmann drives are the just cool. I'd love a pair.

BUT - the Weissmann setup adds a full foot or more between the two motors, making it an application that can only be considered sensible in a raceboat. First, you still have the transom hardware for the drive inputs. The "belt dies" of the rear motor must be forward enough to clear that crap. Then you got bellhousings on the motor and then the weissmann U drive and Z drive combo thingy. This booger has GOT to eat up at least a foot between the bellhousings, maybe more. Then you got a bellhousing on the back of the front motor and it goes forward from there. This is a LOOOONG setup. And routing exhaust thru the transom would be "interesting".

I think a more conventional TWIST on the reversed motor idea is to simply turn one motor around "wrong way" and use a snout coupler similar to those used on some of the old Vee drive drag boats. This would allow you to still snuggle the motors closer together, cram the rear motor against the transom plate, and pull the backseat bulkhead all the way up to the front motor's abbreviated bellhousing. No need to leave room for belt maintenance and power steering, etc. Sumpin to think about anyhow..

Last edited by mcollinstn; 10-03-2004 at 11:15 PM.
mcollinstn is offline  
Reply With Quote
Old 10-03-2004, 11:12 PM
  #14
Neno the mind boggler
VIP Member
Trade Score: (1)
 
glassdave's Avatar
 
Join Date: Sep 2001
Location: toledo oh
My Boats: Batboat, 38 Scarab Thunder, 16 Sidewinder, 27 Magnum
Posts: 12,667
Default Re: staggered engines

thanks Reed, i have never seen a pic of that. actually kinda looks like a pulling tractor in that pic . that is some serious access to the motors with that setup
__________________
Throttles- Cleveland Construction 377 Talon
08 OPA Class 1 National Champion
08 Class 1 Geico Triple Crown Champion
08 OPA High Points Champion
10 OPA Class 1 National Champion ( happy now Ed! )
glassdave is offline  
Reply With Quote
Old 10-03-2004, 11:22 PM
  #15
Registered
 
Reed Jensen's Avatar
 
Join Date: Dec 2003
Location: Los Angeles California
Posts: 8,301
Default Re: staggered engines

Here are some other pics of the drive system.... cool stuff.........
Attached Thumbnails
staggered engines-p2020012.jpg   staggered engines-p2020013.jpg  
Reed Jensen is offline  
Reply With Quote
Old 10-03-2004, 11:27 PM
  #16
Registered
 
Reed Jensen's Avatar
 
Join Date: Dec 2003
Location: Los Angeles California
Posts: 8,301
Default Re: staggered engines

I think taking the power off the engine at the nose would add just as much space as all the Weismann doo-dads.... then you have to pull the engine to change a belt... and how do you hook up the trans?.... and how do you drive 500 horsepower through a keyway and the front of the crank... I guess you could have a special crank made... but talk about huge money......
Reed Jensen is offline  
Reply With Quote
Old 10-03-2004, 11:39 PM
  #17
Enjoy the show
VIP Member
 
Ron P's Avatar
 
Join Date: Feb 2001
Location: The Joisey Shore
Posts: 10,353
Default Re: staggered engines

Reed, they are back to back, one engine is flipped around. Nothing fancy.

Looks like Nigel likes the drives too.
Attached Thumbnails
staggered engines-nigel-kiss.jpg  
Ron P is offline  
Reply With Quote
Old 10-03-2004, 11:52 PM
  #18
Registered
 
Reed Jensen's Avatar
 
Join Date: Dec 2003
Location: Los Angeles California
Posts: 8,301
Default Re: staggered engines

Yeah.... I've also noticed that Teague stickers are absent from his boat...... anyone know the story?............
Reed Jensen is offline  
Reply With Quote
Old 10-03-2004, 11:55 PM
  #19
Registered
 
Reed Jensen's Avatar
 
Join Date: Dec 2003
Location: Los Angeles California
Posts: 8,301
Default Re: staggered engines

Quote Ron P: Reed, they are back to back, one engine is flipped around. Nothing fancy.

I know that.... MCollinstn was talking about taking the power off the nose of the crank... not me........
Reed Jensen is offline  
Reply With Quote
Old 10-04-2004, 12:56 AM
  #20
Enjoy the show
VIP Member
 
Ron P's Avatar
 
Join Date: Feb 2001
Location: The Joisey Shore
Posts: 10,353
Default Re: staggered engines

Quote:
Originally Posted by Reed Jensen
I know that.... MCollinstn was talking about taking the power off the nose of the crank... not me........
My bad.
Ron P is offline  
Reply With Quote
Reply

Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Payton
Drives and Lower Units
3
05-15-2007 07:08 AM
24degrees
General Q & A
2
06-18-2006 10:08 AM
JJONES
General Q & A
4
09-10-2005 01:40 PM
timucin
General Boating Discussion
20
08-11-2002 06:01 AM



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 On
Pingbacks are On
Refbacks are On



All times are GMT -5. The time now is 09:07 AM.


Copyright 2011 OffShoreOnly. All rights reserved.