Belzona For Drive Shaft Repairs?

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  • Mumbles
    Mumbles

    Canada Member - 2 Years
    Replies: 4234
    Topics: 427
    #178187

    Has anyone ever heard of or used Belzona products?

    A friend gave me a Belzona 1111 epoxy repair kit and after reading up on it, I’m wondering if it couldn’t be used to repair the grooves worn into shafts caused by the lip on the seal. If so, it would be a lot quicker and easier than welding/machining or sleeving a shaft.

    After going onto their website and clicking on the 1111 product and watching their repair videos, I’m thinking it might be possible.

    https://www.belzona.com/en/products/1000.aspx

    https://www.belzona.com/en/products/1000/1111.aspx

    Buccaneer
    Buccaneer

    US Member - 1 Year
    Replies: 3269
    Topics: 910
    #178191

    I’ve looked up the product in the past when I was looking for options for the type
    of drive shaft repairs you mention. I believe it was relatively expense, which might
    be okay if it has a long shelf live, as very little would be needed for mentioned repairs.
    Also, I wonder how abrasive the repair would be for a rubber seal area?
    One thing sliding a bearing over a repair area, may be another a rubber seal?
    Here’s a YouTube video……

    Prepare to be boarded!

    Avatar
    jrm80


    Replies: 11
    Topics: 6
    #181500

    I HAVE USED BELZONA IN THE PAST AND BEEN VERY IMPRESSED WITH IT’S RESULTS. FOR YOUR APPLICATION HOWEVER, I WOULD GO WITH A SPEEDIE SLEEVE. THEY ARE VERY THIN STAINLESS STEEL SLEEVES THAT WILL COVER THE WORN AREA. THEY ARE FAIRLY EASY TO INSTALL ALTHOUGH THEY ARE A LITTLE PRICEY–(20.00-30.00) DEPENDING ON THE SIZE. LOOK THEM UP, THEY’RE PROBABLY JUST WHAT YOU NEED.

    JRM80

    Avatar
    billw

    US Member - 2 Years
    Replies: 1055
    Topics: 38
    #181512

    There is a well-respected shop in my area that uses it to repair pitted hydraulic ram surfaces, with good results, when that’s the only solution. We have repaired a few rotted through aluminum engine blocks with it and the repairs have lasted for a good number of years, in salt water. I think it is better than Marine Tex, by a mile. I dunno about running a seal lip on it, though; and the stuff is very expensive. But I will definitely be looking forward to your results! I ALMOST used it on a badly pitted, 1970 4 hp Merc driveshaft, but finally figured a way to make something resembling a speedi-sleeve. (Before anyone asks, it took like a zillion hours of experimentation and work, to save a $50 motor. It was more the principle of the thing. Actual Speedi-Sleeves are not available in a size that small.)

    Long live American manufacturing!

    Buccaneer
    Buccaneer

    US Member - 1 Year
    Replies: 3269
    Topics: 910
    #188226

    Mumbles, did you ever try the Belzona for shaft repairs in a seal area?

    Prepare to be boarded!

    Avatar
    green-thumbs

    US Member - 1 Year
    Replies: 312
    Topics: 35
    #188244

    Had a Radio Flyer wagon a lot of years back. The thin sheet metal cracked around areas where fasteners went thru.Took wagon to
    local welder. He used torch and flux to braze large washers to sheet
    metal. OEM should have done it that way…
    I wonder if brazing the groove worn in shaft would be easier to
    refinish than weld. It seems to me that chucking shaft in lather and carefully turning off excess metal then polishing with file and sandpapr
    might work. Even better using a tool post grinder for a really smooth
    surface.
    All that I can recall is welder used torch, flux and a rod of brazing
    material to repair wagon and it went very quickly…I think a common
    problem with a well rehearsed technique to fix.
    Louis

    Buccaneer
    Buccaneer

    US Member - 1 Year
    Replies: 3269
    Topics: 910
    #188272

    Brazing has it’s challenges as well, but easier to see what you’re doing,
    apply, etc. Might be a problem keeping the molten mass from running
    off the shaft, and turning the shaft as you braze.
    Also, not sure how long the brazed area holds up to wear from the
    seal, but probably not an issue with a little used antique.

    Prepare to be boarded!

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    Samuel Phelps

    US Member - 1 Year
    Replies: 97
    Topics: 19
    #188276

    I’ll bet it would would work good for patching an aluminum boat hull or pitted transom….

    Avatar
    chris-p

    Canada Member - 1 Year
    Replies: 2481
    Topics: 157
    #188368

    Lately I have been turning down the shaft to a slightly smaller OD (as long as the groove is not that deep).

    I then have seals made with the same OD, but smaller ID, to fit this machined down surface.

    Easier than building the ID back up to original spec. These “build ups” often fail, and are a lot of work as mentioned. Cheaper and easier to change the seal used.

    Just my 2 cents.

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    dave-bernard

    US Member - 2 Years
    Replies: 935
    Topics: 11
    #188378

    just an idea. how about turning down the shaft and use a seal that fits the new diameter ??

    Buccaneer
    Buccaneer

    US Member - 1 Year
    Replies: 3269
    Topics: 910
    #188386

    For my Speeditwin prop shaft,

    I have a smaller shaft size seal on order in case I decide to just turn down the prop shaft.
    OD won’t fit, so that will have to be sleeved.

    Also have a piece of 1.005 OD stainless steel pipe coming, in case I turn down the
    shaft and make a sleeve to fit over.

    Also have a 25 mm polished shaft and woodruff key cutter, on order, so I can make a new shaft, or have fun trying.

    Also am thinking about using the old broken shaft to practice brazing or mig welding and
    turning down, for worn shaft seal areas.

    I fitted the “worn” replacement prop shaft with new bearings and races, and set the backlash
    today. No side play in the shaft when installed, so it’s just the seal area and looseness
    where the prop mounts, that must be addressed.

    Prepare to be boarded!

    • This reply was modified 1 week, 5 days ago by BuccaneerBuccaneer.
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