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  1. #1
    Join Date
    May 2008
    Location
    Troy, MI
    Posts
    343

    Default Propeller Repair

    Attached are some pictures of a prop I repaired for a friend.
    The boat was 50 HP and was built in 1968.
    Last fall the prop hit a log.
    Attached Images Attached Images

    Miller Thunderbolt
    Smith Oxyacetylene Torch
    Miller Dynasty 200DX
    Lincoln SP-250 MIG Welder
    Clausing/Coldchester 15" Lathe
    16" DuAll Saw
    15" Drill Press
    7" x 9" Swivel Head Horizontal Band Saw
    20 Ton Arbor Press
    Bridgeport

  2. #2
    Join Date
    May 2008
    Location
    Troy, MI
    Posts
    343

    Default

    And the last picture
    Attached Images Attached Images

    Miller Thunderbolt
    Smith Oxyacetylene Torch
    Miller Dynasty 200DX
    Lincoln SP-250 MIG Welder
    Clausing/Coldchester 15" Lathe
    16" DuAll Saw
    15" Drill Press
    7" x 9" Swivel Head Horizontal Band Saw
    20 Ton Arbor Press
    Bridgeport

  3. #3
    Join Date
    Sep 2005
    Location
    Salem ,Ohio
    Posts
    3,919

    Default

    Nice...Bob
    Bob Wright, Grandson of Tee Nee Boat Trailer Founder
    Metal Master Fab Salem, Oh 44460
    Birthplace of the Silver & Deming Drill
    1999 MM185 w/185 Spoolgun,1986 Thunderbolt AC/DC
    Spool Gun conversion. How To Do It. Below.
    http://www.millerwelds.com/resources...php?albumid=48

  4. #4
    Join Date
    Feb 2007
    Location
    West Farmington, OH
    Posts
    746

    Default

    It looks like you did a fine job on the repairs!

    How much time did you have in the project start to finish? Hopefully the boat owner will be more careful where he/she takes the boat this season.
    Blondie (Owner C & S Automotive)

    Colt the original point & click interface!

    Millermatic 35 with spot panel
    Miller 340A/BP
    Victor O/A torches
    Lincoln SP125
    Too many other tools to list

    03 Ram 1500
    78 GS1000
    82 GL1100 Interstate

  5. #5
    Join Date
    May 2008
    Location
    Troy, MI
    Posts
    343

    Default

    Quote Originally Posted by Blondie_486 View Post
    It looks like you did a fine job on the repairs!

    How much time did you have in the project start to finish? Hopefully the boat owner will be more careful where he/she takes the boat this season.
    It took me about 1-1/4 hours.
    It took a little longer because there was a crack in the middle of the blade from a previous repair.

    Don

    Miller Thunderbolt
    Smith Oxyacetylene Torch
    Miller Dynasty 200DX
    Lincoln SP-250 MIG Welder
    Clausing/Coldchester 15" Lathe
    16" DuAll Saw
    15" Drill Press
    7" x 9" Swivel Head Horizontal Band Saw
    20 Ton Arbor Press
    Bridgeport

  6. #6
    Join Date
    Dec 2006
    Location
    Clarksville, TN
    Posts
    427

    Default

    i wish you were around or i knew how to tig when i was seventeen. i ran my Dads mid fifties seventy horse johnson on a sand bar. to get loose i gunned it and ground away half the propeller. My dad didnt say a word. which is worse than getting yelled at. Took a year to find replacement prop.

  7. #7
    Join Date
    May 2011
    Location
    Bossier Parish La.
    Posts
    550

    Default

    Looks like you saved the day with this repair. The boat owner would probably have a hard time finding a replacement prop for an outboard that old in the size and pitch needed. Not to mention what the price would be IF a replacement could be found. Any idea how it turned out as far as balance goes? If it vibrates too much at operating speeds it could chew up the seals on the shaft causing water to enter the gearbox and trashing the lower unit if not checked. If it has some vibration after this, it can be taken to a prop shop for final balancing, look in the yellow pages for a shop to do this if needed. They can also replace the rubber bushing in the hub if it starts slipping. The impact with the log that cause this damage could have loosened the bushing enough to the point where it could start trying to spin in the hub during acceleration. If the motor revs up more than normal before the boat reaches speed, then that is what's going on. It may take several outings before this happens, but it is probably going to happen eventually with this old of a prop. There are specialty shops out there that do prop repairs as well as modifications that do this kind of work. Some dealership repair departments may also be able to do this, too. So if it starts to slip in the hub, get the bushing replaced before it spins off completely and sends the repaired prop to the bottom of the lake, never to be seen again. Seen that happen before, then you need a tow back in if a replacement is not onboard the boat. Weekends last longer when you carry a spare propeller.

  8. #8
    Join Date
    May 2008
    Location
    Troy, MI
    Posts
    343

    Default

    Quote Originally Posted by aametalmaster View Post
    Nice...Bob
    Bob,

    My friend Jim, the boat owner, is a decent TIG welder. To prepare him for the prop repair, I sent him a link to your latest prop welding repair posting.

    http://www.millerwelds.com/resources...at-prop-repair

    I also sent him a link to Welding Tips & Tricks prop welding repair.

    http://www.weldingtipsandtricks.com/...ropellers.html

    After work Jim brought the prop to our TIG welder and discovered that the Argon bottle was empty because it had been left open for some time and the spare was also empty because whoever last switched tanks didn't bother to move it to the empty cylinder corral. I just told him to give it to me . I welded it that evening and brought it in the next day.

    Miller Thunderbolt
    Smith Oxyacetylene Torch
    Miller Dynasty 200DX
    Lincoln SP-250 MIG Welder
    Clausing/Coldchester 15" Lathe
    16" DuAll Saw
    15" Drill Press
    7" x 9" Swivel Head Horizontal Band Saw
    20 Ton Arbor Press
    Bridgeport

  9. #9
    Join Date
    May 2008
    Location
    Troy, MI
    Posts
    343

    Default

    Quote Originally Posted by Bistineau View Post
    You (should) carry a spare propeller.
    Fortunately Jim does have a spare prop. I didn't realize that it would be difficult to find one for such an old boat. I will remind him that he might want to keep it on the boat for emergencies.

    I will review the technical information of your post with Jim.

    Thanks for taking the time to post. I really enjoy everything that I have learned from this forum.

    Don

    Miller Thunderbolt
    Smith Oxyacetylene Torch
    Miller Dynasty 200DX
    Lincoln SP-250 MIG Welder
    Clausing/Coldchester 15" Lathe
    16" DuAll Saw
    15" Drill Press
    7" x 9" Swivel Head Horizontal Band Saw
    20 Ton Arbor Press
    Bridgeport

  10. #10
    Join Date
    Feb 2007
    Location
    West Farmington, OH
    Posts
    746

    Default

    Well it looks great, I couldn't have done it better myself. I'll bet your friend is happy you saved them a bunch of money fixing it vs replacing it.
    Blondie (Owner C & S Automotive)

    Colt the original point & click interface!

    Millermatic 35 with spot panel
    Miller 340A/BP
    Victor O/A torches
    Lincoln SP125
    Too many other tools to list

    03 Ram 1500
    78 GS1000
    82 GL1100 Interstate

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