Reply
 
Thread Tools Search this Thread Display Modes
 
Old 01-16-2017, 11:14 AM   #1
Obx
Senior Member
 
City: Outer banks NC
Join Date: Nov 2015
Posts: 128
Drives

When I was looking at this 89 42' grand banks I'm looking to buy the listing says it has a V drive for the 3208TA but I don't remember seeing 2 shafts connected. Isn't that what V drive means?

What type of drives did they normally install to the Cat 3208TA?
Obx is offline   Reply With Quote
Old 01-16-2017, 11:20 AM   #2
Enigma
 
RT Firefly's Avatar
 
City: Slicker?
Join Date: Oct 2007
Posts: 16,540
Greetings,
All About Marine Transmission V-Drives - Seaboard Marine
__________________
RTF
RT Firefly is offline   Reply With Quote
Old 01-16-2017, 11:23 AM   #3
Technical Guru
 
Ski in NC's Avatar
 
City: Wilmington, NC
Vessel Name: Louisa
Vessel Model: Custom Built 38
Join Date: Jan 2014
Posts: 6,194
I don't think GB used vee drives, if so that might be a unicorn.

Vee drives typically have engines in back of the boat, with transmissions ahead of engines. Common on faster cruisers, not real common on trawlers.
Ski in NC is offline   Reply With Quote
Old 01-16-2017, 02:15 PM   #4
Valued Technical Contributor
 
DavidM's Avatar
 
City: Litchfield, Ct
Join Date: Aug 2012
Posts: 6,775
I agree with Ski. I have been on several GB 42s and they were Lehman engines with conventional prop shafts, maybe Cat 3208TAs in later years. I think that is probably a mis-statement in the listing. With two heavy Cats way in the back, it would be seriously out of trim.

David
DavidM is offline   Reply With Quote
Old 01-16-2017, 03:10 PM   #5
Senior Member
 
Brisyboy's Avatar
 
City: Brisbane
Vessel Name: Malagari
Vessel Model: Island Gypsy 36 Europa
Join Date: Mar 2015
Posts: 422
Maybe it was short for BW Velvet Drives
__________________
George
Brisbane
IG 36 Europa
Brisyboy is online now   Reply With Quote
Old 01-16-2017, 07:00 PM   #6
TF Site Team
 
Insequent's Avatar
 
City: Brisbane
Vessel Name: Insequent
Vessel Model: Ocean Alexander 50 Mk I
Join Date: Mar 2012
Posts: 4,260
A few years ago I inspected a GB 42 In Seattle with a single Cat 3208. The engine was mounted really high, and it looked kinda odd. I don't remember the transmission, but possibly it had a V drive and that was why it was mounted so high.
__________________
Brian
Insequent is offline   Reply With Quote
Old 01-16-2017, 07:15 PM   #7
Guru
 
High Wire's Avatar
 
City: Cape May, NJ
Vessel Name: Irish Lady
Vessel Model: Monk 36
Join Date: Dec 2007
Posts: 4,947
Quote:
Originally Posted by Obx View Post
When I was looking at this 89 42' grand banks I'm looking to buy the listing says it has a V drive for the 3208TA but I don't remember seeing 2 shafts connected. Isn't that what V drive means?

What type of drives did they normally install to the Cat 3208TA?
Was the engine facing backwards? Meaning the belts and alt pulleys towards the stern? If so, yes has a V-Drive.

The majority of 42 GBs I've seen listed are twins with conventional drive trains.
__________________
Archie
Irish Lady
1984 Monk 36 Hull #46
Currently in Cape May, NJ
High Wire is offline   Reply With Quote
Old 01-16-2017, 10:12 PM   #8
Guru
 
Nomad Willy's Avatar
 
City: Concrete Washington State
Vessel Name: Willy
Vessel Model: Willard Nomad 30'
Join Date: Oct 2007
Posts: 18,738
Quote:
Originally Posted by Insequent View Post
A few years ago I inspected a GB 42 In Seattle with a single Cat 3208. The engine was mounted really high, and it looked kinda odd. I don't remember the transmission, but possibly it had a V drive and that was why it was mounted so high.
The original gear was probably a BW VD. That's a planetary reduction drive and most modern gears aren't planetary. They have two gearbox shafts. The input and output shafts. They are vertically one above the other so the input shaft (in the gearbox) is above the output shaft. So the engine crankshaft (and thus the engine) needs to be raised the distance between the two shafts .. usually two or three inches.

That's my guess. However if it actually had/has a V drive the orientation of all the components of a V drive generally necessates a high mounted engine. Even then acessability to the shaft seal is poor. A V drive boat will almost always have a far aft mounted engine.
Since the GB boats typically have a rather far fwd mounted engine and a hull designed for that mounting a far aft engine would probably not be a good choice. A very unballanced boat will result. Possibly drier though.
__________________
Eric

North Western Washington State USA
Nomad Willy is offline   Reply With Quote
Reply

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


» Trawler Port Captains
Port Captains are TF volunteers who can serve as local guides or assist with local arrangements and information. Search below to locate Port Captains near your destination. To learn more about this program read here: TF Port Captain Program





All times are GMT -5. The time now is 02:55 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012