Go Back  Offshoreonly.com > Technical > Drives and Lower Units
Adding extension boxes to SSMIII...INFO PLEASE. >

Adding extension boxes to SSMIII...INFO PLEASE.

Notices

Adding extension boxes to SSMIII...INFO PLEASE.

Old 12-08-2018 | 01:53 PM
  #31  
Registered
15 Year Member
 
Joined: Jun 2009
Posts: 9,969
Likes: 6,462
From: Chicago
Default





Man that lower of them 3`s is like a mile long. Thats a lot of drag.
ICDEDPPL is offline  
Reply
Old 12-08-2018 | 02:03 PM
  #32  
F-2 Speedy's Avatar
Platinum Member
Community Builder
10 Year Member
Platinum Member
 
Joined: May 2012
Posts: 11,427
Likes: 3,953
From: Midwest & T-Rock
Default

they made #3's without the cresent lower ??
F-2 Speedy is offline  
Reply
Old 12-08-2018 | 02:51 PM
  #33  
Ironmanwb's Avatar
Thread Starter
Registered
20 Year Member
 
Joined: Jun 2003
Posts: 1,450
Likes: 139
From: Somewhere other than Here
Default

Originally Posted by ICDEDPPL




Man that lower of them 3`s is like a mile long. Thats a lot of drag.
yep that's what I'm talking about.
Ironmanwb is offline  
Reply
Old 12-08-2018 | 03:36 PM
  #34  
Team Archer's Avatar
Platinum Member
10 Year Member
Platinum Member
 
Joined: May 2013
Posts: 1,445
Likes: 502
From: Huntington Beach
Default

First generation number IIIs and number IIs were non cresent I believe it wasn't until about late 70s early 80s that the cresent lower came out. The 35 Cigarette race boat I have at the shop is non cresent its a 76 model and I have a set of drives off of a 41 attack that I believe is an 81 model they are also non's Regards Dan

Last edited by Team Archer; 12-08-2018 at 03:38 PM.
Team Archer is offline  
Reply
Old 12-08-2018 | 03:48 PM
  #35  
Team Archer's Avatar
Platinum Member
10 Year Member
Platinum Member
 
Joined: May 2013
Posts: 1,445
Likes: 502
From: Huntington Beach
Default

There is a 5 5/8 of an inch difference between the two drives.
Team Archer is offline  
Reply
Old 12-09-2018 | 04:14 PM
  #36  
Ironmanwb's Avatar
Thread Starter
Registered
20 Year Member
 
Joined: Jun 2003
Posts: 1,450
Likes: 139
From: Somewhere other than Here
Default

I really need to measure the x dimension to get this figured out.
Ironmanwb is offline  
Reply
Old 12-16-2018 | 12:30 PM
  #37  
Ironmanwb's Avatar
Thread Starter
Registered
20 Year Member
 
Joined: Jun 2003
Posts: 1,450
Likes: 139
From: Somewhere other than Here
Default

Ok so I was able to measure the bolt holes and the lowest hole on the outside is 7-1/2 " from the bottom of the hull to the centerline of the hole. My drives are on 36" centers. So I used some measurements from another 36 with SSMIII and my math says my x dimension is approximately 5-1/2" .

If if anyone here has a way to confirm that it would be appreciated.
Ironmanwb is offline  
Reply
Old 12-16-2018 | 01:49 PM
  #38  
Registered
15 Year Member
 
Joined: Jan 2007
Posts: 2,075
Likes: 1,194
From: Murrayville Georgia
Default

x dimension and drive height are two different things. x dimension is the point from the bottom of the hull to where the upper shaft goes thru in a straight vertical line. drive height is where the propshaft is from the bottom with the propshaft parallel to the bottom. if you have no spacers in the drive, if you tell us the drive height we can look up and see what the x dimension is right now.
compedgemarine is offline  
Reply
Old 12-28-2018 | 12:21 PM
  #39  
Ironmanwb's Avatar
Thread Starter
Registered
20 Year Member
 
Joined: Jun 2003
Posts: 1,450
Likes: 139
From: Somewhere other than Here
Default

Does anyone have a schematic of the these drives mounted on a transom with dimensions? I saw one a while back but I can't seem to find it.


Compedgemarine---- Thanks for the information. I always thought the x dimension was from the bottom of the hull to center line of the prop....glad to be set straight and I never thought of the drive mounting height VS the X dimension. I just thought in my case they are not exclusive as there are no shorter lowers or spacers available as far as I am aware.
Ironmanwb is offline  
Reply
Old 01-25-2019 | 10:00 AM
  #40  
Ironmanwb's Avatar
Thread Starter
Registered
20 Year Member
 
Joined: Jun 2003
Posts: 1,450
Likes: 139
From: Somewhere other than Here
Default

Stilll looking for mec drawings on this if anyone has them. I saw them at one point and the gave all of the dimensions of the drives and from different points on the drives but I can't seem to find them now. Any help would be appreciated.
Ironmanwb is offline  
Reply

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


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.