Go Back  Offshoreonly.com > Technical > Drives and Lower Units
Bravo one drive failed yesyerday >

Bravo one drive failed yesyerday

Notices

Bravo one drive failed yesyerday

Old 08-01-2020, 09:36 AM
  #1  
Registered
Thread Starter
 
Join Date: Jun 2004
Location: Sun Prairie, WI
Posts: 1,055
Likes: 0
Received 1 Like on 1 Post
Default Bravo one drive failed yesyerday

Was doing 70mph+ yesterday and lost the drive. Shifter wonít move and prop is locked . Also drive lube reservoir was empty. Was full all summer and never moved. After a long tow. And back in the trailer, I pulled the prop to fain access to drain plug. Pulled the plug, lube coming out . Seemed fairly clean but could see metallic in it. Found no evidence of where the oil was going. But I did find the prop shaft is severely twisted. Never seen one so bad. Prop looks normal. So I donít know what happened. Didnít come out of the water, and didnít power up or off any sand bars. I never do that.... Not sure if the coupler is spun yet or not.

What are my options to going to a bigger drive? Ultimately, Iíd like to put a XR on, but not sure if it will mount up with out changing a bunch. I do currently have dual ram hydraulic steering from Marine Machine. Iím guessing the hydraulic ram attachment plate wonít mount up to a XR. Iím running 500hp currently, would like to get to 650hp eventually.

Suggestions? Should I just fix my drive and run it, or use the opportunity to upgrade.
cloudmaster_321 is offline  
Old 08-01-2020, 10:46 AM
  #2  
Gold Member
Gold Member
 
Join Date: Jul 2008
Location: Delray Beach, FL
Posts: 3,204
Received 68 Likes on 37 Posts
Default

The age long debate of XR vs X upper gears. Personally I like X gears more but lets see what the forum says...
Keith Atlanta is offline  
The following users liked this post:
Wildman_grafix (08-02-2020)
Old 08-01-2020, 12:17 PM
  #3  
Registered
iTrader: (1)
 
Join Date: Nov 2009
Location: KY
Posts: 2,911
Received 87 Likes on 73 Posts
Default

Twisting the prop shaft, think you hit something
AllDodge is offline  
The following users liked this post:
Griff (08-05-2020)
Old 08-01-2020, 01:12 PM
  #4  
Registered
iTrader: (1)
 
Join Date: Oct 2013
Location: SF Bay Area
Posts: 2,735
Received 53 Likes on 40 Posts
Default

I donít have any legitimate experience, but a common consensus is that Bravos are cheap enough to just keep a spare one in the truck. XRs hold up a smidge better but the straight cut gears wear out much quicker. The XZ gears seem to be a popular choice.

I agree that you probably hit something. What direction are the splines bent? If they bent in the direction of the prop rotation than the drive locked up. If they bent in the opposing direction then you hit something.
Baja Rooster is offline  
The following users liked this post:
Wildman_grafix (08-02-2020)
Old 08-01-2020, 11:01 PM
  #5  
Registered
Thread Starter
 
Join Date: Jun 2004
Location: Sun Prairie, WI
Posts: 1,055
Likes: 0
Received 1 Like on 1 Post
Default

Originally Posted by Baja Rooster View Post
I donít have any legitimate experience, but a common consensus is that Bravos are cheap enough to just keep a spare one in the truck. XRs hold up a smidge better but the straight cut gears wear out much quicker. The XZ gears seem to be a popular choice.

I agree that you probably hit something. What direction are the splines bent? If they bent in the direction of the prop rotation than the drive locked up. If they bent in the opposing direction then you hit something.



Right hand rotation 1.5 bravo 1

Last edited by cloudmaster_321; 08-01-2020 at 11:07 PM.
cloudmaster_321 is offline  
Old 08-02-2020, 05:42 AM
  #6  
Registered
iTrader: (4)
 
Join Date: May 2009
Posts: 1,380
Received 62 Likes on 39 Posts
Default

What brand and size of boat ?
what engine ?
what is your propshaft height ?

if it's not a smartcraft engine i wonder if the resovoir with the float and wires could be used for a light or a kill switch if the fluid level drops again.
outonsafari is offline  
Old 08-02-2020, 06:30 AM
  #7  
Registered
iTrader: (1)
 
Join Date: Oct 2013
Location: SF Bay Area
Posts: 2,735
Received 53 Likes on 40 Posts
Default

Originally Posted by cloudmaster_321 View Post


Right hand rotation 1.5 bravo 1
Iím no brain surgeon, but that looks like the drive seized while the prop tried to continue spinning and wrapping that shaft into a knot.
Baja Rooster is offline  
The following users liked this post:
350scarab (08-13-2020)
Old 08-02-2020, 08:00 AM
  #8  
Registered
 
Join Date: May 2018
Location: Western Pennsylvanoa
Posts: 337
Received 46 Likes on 32 Posts
Default

looks more like prop was counter-clockwise rotation??
PA.WOODCHUCK is offline  
Old 08-02-2020, 08:17 AM
  #9  
Registered
 
Join Date: Jun 2010
Posts: 3,789
Likes: 0
Received 75 Likes on 44 Posts
Default

Originally Posted by Baja Rooster View Post
Iím no brain surgeon, but that looks like the drive seized while the prop tried to continue spinning and wrapping that shaft into a knot.
agreed unless there is visible damage to the prop indicating something was hit...
1MOSES1 is offline  
The following users liked this post:
Griff (08-05-2020)
Old 08-03-2020, 08:04 AM
  #10  
Registered
Thread Starter
 
Join Date: Jun 2004
Location: Sun Prairie, WI
Posts: 1,055
Likes: 0
Received 1 Like on 1 Post
Default

Originally Posted by 1MOSES1 View Post
agreed unless there is visible damage to the prop indicating something was hit...
prop is perfect.
cloudmaster_321 is offline  

OSO Sponsor
OSO Advertiser
OSO Advertiser

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright © 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.

OSO Advertiser