Go Back  Offshoreonly.com > Technical > General Q & A
prop shaft wobble bravo 1 >

prop shaft wobble bravo 1

Notices

prop shaft wobble bravo 1

Thread Tools
 
Old 05-21-2010 | 06:51 AM
  #1  
Thread Starter
Registered
 
Joined: Jul 2002
Posts: 2,233
Likes: 1
From: pa
Default prop shaft wobble bravo 1

fired up motors yesterday and put drive in gear and notoced with no props on the shaft on the one drive has a slight wobble to it and the other one spins perfect never noticed it before and both lowers have been done in past 2 years, will it hurt to run it. It is maybe out 30 thousands but it is tight coming out of the case so it must be very slighlty bent.
rssteiny is offline  
Reply
Old 05-21-2010 | 07:57 AM
  #2  
88Fount33's Avatar
Beak botr
20 Year Member
VIP Member
 
Joined: Dec 2003
Posts: 891
Likes: 0
From: Cape Coral
Default

It is the start of the season, I'd fix it now. It could eventually take out all those new parts in the drive. My old alpha was perfect one season, didn't hit a thing with the prop that I could feel or see on the prop as far as prop damage, then found it bent about the same. I don't recommend running with known problems as they always find a way to go from bad to total destruction in the blink of an eye.
88Fount33 is offline  
Reply
Old 05-21-2010 | 08:12 AM
  #3  
Registered
15 Year Member
 
Joined: Jul 2008
Posts: 248
Likes: 1
From: Crystal Lake, IL
Default

I never felt a thing last year and the boat felt fine, but when I winterized it at the end of the year I saw this Both Bravos from stock 496 HOs.

Naughty Kitty is offline  
Reply
Old 05-21-2010 | 08:19 AM
  #4  
Airpacker's Avatar
Registered
 
Joined: Aug 2001
Posts: 4,008
Likes: 3
From: Aurora Ontario
Default

Think about the forces in play here.

Take one wobbly shaft, add ten pounds of SS prop and rotate vigorously at 3500 RPM ( assuming 1.5 to 1 drive ratio ) while applying a load of several thousand pounds against the blades and you have the recipe for a torn up lower unit.
Airpacker is offline  
Reply
Old 05-21-2010 | 10:55 AM
  #5  
Registered
 
Joined: Jan 2007
Posts: 1,667
Likes: 0
Default

Originally Posted by Naughty Kitty
I never felt a thing last year and the boat felt fine, but when I winterized it at the end of the year I saw this Both Bravos from stock 496 HOs.
Judging by your pic with the twisted prop shaft, I'd say you have seen some air time in the boat. Gotta get faster on the sticks!!
SDFever is offline  
Reply
Old 05-21-2010 | 01:42 PM
  #6  
Registered
15 Year Member
 
Joined: Jul 2008
Posts: 248
Likes: 1
From: Crystal Lake, IL
Default

Originally Posted by SDFever
Judging by your pic with the twisted prop shaft, I'd say you have seen some air time in the boat. Gotta get faster on the sticks!!
yeah, that and I had BBlades make me up some new wheels to lower the slippage numbers...needless to say those wheels have some teeth.
Naughty Kitty is offline  
Reply
Old 05-21-2010 | 04:08 PM
  #7  
Panther's Avatar
Frank's Marine Service
20 Year Member
Gold Member
 
Joined: Sep 2002
Posts: 11,959
Likes: 142
From: Elkton, MD
Default

A wobbly shaft is going to wear out your propshaft bearings and you'll probably feel some vibration.

The propshaft is one of the easiest parts to replace as there's no shimming involved.. Pull the carrier, put a new bearing on the shaft, new race and seals in the carrier, seal/install and tighten to the proper rolling pre-load, you're done... Take her for a spin and re-check pre-load.
Panther 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.