Like Tree0Likes

one engine / twin drive setup???

Reply
Old 12-05-2003, 06:41 PM
  #11
Registered
 
super termoli's Avatar
 
Join Date: Sep 2003
Posts: 647
Default

This could really be a good thing for smaller boats with a big horsepower single engine. It would avoid torque steer and make docking much easier. Those would be advantages. In terms of cost, the idea is to be able to keep running Bravos reliably with 700+ hp without having to shell out for a Speedmaster. But in my opinion, there would be no big savings, if any. Because two Bravos+splitter would have to be significantly less than a single Speedmaster. I don't think this will happen. In terms of performance, the idea is to avoid high power loss associated with the Speedmaster. But again, frictional loss of efficiency of two Bravos+splitter would have to be significantly lower than that of a single Speedmaster, which is going to be difficult. And I say it would have to be significantly lower in order to compensate for the effects of a more diffused thrust of two outdrives vs. one Speedmaster. So I actually think that an inverse splitter would be more useful because it would allow larger boats with 3 or 4 engines to run only two drives which would eliminate torque steer on triples and be good for performance because a) the thrust would be more concentric and b) if the splitter costs less power in terms of friction, then with the addition of one or two splitters and the elimination of one and two drives respectively, the overall loss of power due to inefficiencies in transmission would be reduced ie. more power to the prop... what do y'all think?
super termoli is offline  
Reply With Quote
Old 12-05-2003, 06:48 PM
  #12
Registered
 
super termoli's Avatar
 
Join Date: Sep 2003
Posts: 647
Default

how would it be to have a race boat with two motors driving a single shaft drive through a system which is inverse from what IMCO are doing? I know it has been tried. Anybody knows how it affects performance? I have a feeling that it would hurt immediate acceleration but improve top speed and handling. Any ideas?
super termoli is offline  
Reply With Quote
Old 12-05-2003, 07:02 PM
  #13
Registered
 
Havasu Hangin's Avatar
 
Join Date: Sep 2001
Location: 273.76 miles from Havasu
Posts: 594
Thumbs up

This boat looks even more wicked in person...

Havasu Hangin is offline  
Reply With Quote
Old 12-05-2003, 09:15 PM
  #14
Registered
 
ragtop409's Avatar
 
Join Date: Jul 2002
Location: Maximo FLA
My Boats: 1995 Nova Spyder
Posts: 1,322
Default

BAD ASS
ragtop409 is offline  
Reply With Quote
Old 12-05-2003, 09:58 PM
  #15
Banned
 
cuda's Avatar
 
Join Date: Sep 2001
Location: Deland, Florida
Posts: 25,191
Default

Seems to me it would be slower due to more hardware dragging in the water.
cuda is offline  
Reply With Quote
Old 12-05-2003, 10:12 PM
  #16
Rik
arneson-industries.com
Offshoreonly Advertiser
 
Rik's Avatar
 
Join Date: Jan 2001
Location: California
Posts: 2,740
Default

We made an Arneson Drive back in the late 70's that took two engine to one drive and one engine to two drives.

I do not know where the boat is or how it performed but I still have the prints and such of the project.
Rik is offline  
Reply With Quote
Old 12-05-2003, 10:37 PM
  #17
Registered
 
Havasu Hangin's Avatar
 
Join Date: Sep 2001
Location: 273.76 miles from Havasu
Posts: 594
Cool

Quote:
Originally posted by cuda
Seems to me it would be slower due to more hardware dragging in the water.
Burtandnancy could probably answer better than I...

...but I think the purpose of the dual drive is stability and reliability. For speed skiing, you want the boat fast and smooth...and that's not easy when you're putting 1,100HP+ in a 21'-24' boat. I think they have all the speed they need.

Those boats (w/turbos) can run very fast for a long time.
Havasu Hangin is offline  
Reply With Quote
Old 12-05-2003, 11:28 PM
  #18
Registered
Trade Score: (2)
 
Jolley's Avatar
 
Join Date: Jan 2002
Location: Cass Lake Michigan
My Boats: 25 Ocean Express
Posts: 1,419
Default

I have seen Prime Time !!!!!!!!!! WOW those drag boat guys have been using splitters for some time now. Bad ASS!!!!!!!!!!!!!!!
Jolley is offline  
Reply With Quote
Old 12-06-2003, 05:52 PM
  #19
Mike J
Guest
 
Posts: n/a
Default

Team Scarab Had or has a Splitter
Box which we installed in a number
of boats a few years ago (Twin Drive Propulsion systems) US Patent 5649844 hydra-drive systems 764 newton way, costa mesa ca.
Not sure whats up with them right
now ButI know there were a number
of them made.
Mike J.
 
Reply With Quote
Reply

Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
HTRDLNCN
General Q & A
6
10-06-2006 07:20 PM
MikeScarab28XLT
General Q & A
13
08-24-2004 03:34 PM
cobra marty
General Boating Discussion
2
05-10-2003 05:18 PM
Too slow
General Q & A
10
03-23-2003 08:10 PM
Toffen
General Boating Discussion
0
09-09-2002 06:01 PM



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 05:17 AM.


Copyright 2011 OffShoreOnly. All rights reserved.