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Trailer Disc Brake Conversion

Discussion in 'Ask An Owner Operator' started by fragicide, Mar 24, 2023.

Page 1 of 2
  1. Mar 24, 2023 #1
    fragicide

    fragicide Bobtail Member

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    Apr 2, 2014
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    Anyone ever converted drum brakes to disc brakes on a trailer? I got a 2022 Doonan Platinum 53’ stepdeck with 17.5 wheels that I’ve been wanting to convert to disc brakes. I’ve only had this thing a year and already had so much dirt and debris get inside the drums and tear apart the shoes. Plus, I already have disc brakes on the tractor and they are amazing in every way.

    Anyways, hoping someone has done this and could give me a price range. No need to include labor, I can do that myself. Just wondering what all I’d need and how much it’s gonna cost. Thanks!
     
    fragicide, Mar 24, 2023
    fragicide, Mar 24, 2023
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  3. Mar 25, 2023 #2
    AModelCat

    AModelCat Road Train Member

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    No dust shields? Never had issues with drum brakes on log trucks and lowbeds in the bush.
     
    AModelCat, Mar 25, 2023
    AModelCat, Mar 25, 2023
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  4. Mar 25, 2023 #3
    fragicide

    fragicide Bobtail Member

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    I never had problems like this until this trailer. The wheels sit so low (17.5’s) that it seems like they just collect every #### thing from the road and mud and dirt and rocks etc. Already replaced two sets of shoes and all 4 slack adjusters.
     
    fragicide, Mar 25, 2023
    fragicide, Mar 25, 2023
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  5. Mar 25, 2023 #4
    wichris

    wichris Road Train Member

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    Axle ends are different. Would have to cut off the drum mounts and weld on caliper mounts.
     
    wichris, Mar 25, 2023
    wichris, Mar 25, 2023
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  7. Mar 25, 2023 #5
    haycarter

    haycarter Road Train Member

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    Easiest way would be 2 new Axles. I would think..!!
     
    haycarter, Mar 25, 2023
    haycarter, Mar 25, 2023
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  8. Mar 25, 2023 #6
    Ridgeline

    Ridgeline Road Train Member

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    Did you talk to Doonan to see what they can do to refit axles on the trailer or at least tell you what parts need to be changed?
     
    Ridgeline, Mar 25, 2023
    Ridgeline, Mar 25, 2023
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  9. Mar 25, 2023 #7
    wichris

    wichris Road Train Member

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    Around $1800 each wheel end. Still have to have someone like axle doctor cut off and weld the caliper mounts.
     
    wichris, Mar 25, 2023
    wichris, Mar 25, 2023
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  10. Mar 25, 2023 #8
    jamespmack

    jamespmack Road Train Member

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    As mentioned. All will matter if you have welded or bolt on spiders.

    Probably best to purchase complete axles.

    What I do not know, do they have a disc set up for 17.5 rims? Maybe someone can teach us all.
     
    jamespmack, Mar 25, 2023
    jamespmack, Mar 25, 2023
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  11. Mar 25, 2023 #9
    Ridgeline

    Ridgeline Road Train Member

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    They do for 17.5. The manufacturer has all the info.
     
    Ridgeline, Mar 25, 2023
    Ridgeline, Mar 25, 2023
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  12. Mar 25, 2023 #10
    jamespmack

    jamespmack Road Train Member

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    I

    I haven't seen any, and to be honest haven't looked.

    Thanks.
     
    jamespmack, Mar 25, 2023
    jamespmack, Mar 25, 2023
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