Rear sprocket change out
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  1. #1
    Junior Member k9scooter's Avatar
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    Noob here with a question; I am going to change my rear sprocket to a 47 tooth sunstar along with a new o-ring chain. I searched for threads relating to problems that I might encounter when removing the rear wheel but couldn't find any. Any suggestions?



    Regards,

    Charlie

  2. #2
    Senior Member lizrdbrth's Avatar
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    Space junk?



    I can explain it to you, but I can't understand it for you.

    Powdercoated '87 frame, extended swingarm, YZ fork legs, ATV tire, 14/55, XT350 tank, spliced quick-release seat, disc brake conversion, beeg headlight, beeger rack, Lizrdcooler, Lizrdventz and bunch of other stuff all covered in invisible ink.

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  3. #3
    Banned qwerty's Avatar
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    Use the stock bolt locking hardware and Loctite on the nuts. Other than that, it's a straightforward project.




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  5. #4
    Senior Member Bagger's Avatar
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    Hey K9, I just did the same project, but went with a 52, and it was very straightforward. I took the time to clean everything up real well while I had room, and found alot of dust/crud in the rear brake. I don't use the rear very much, so parts looked new, but there was alot of dust in there.



    Other than that, have fun!



    Bag
    "The TW may be slow, but the Earth is patient" - MK

    "If I'm wrong, and it turns out that you hate it, I'll send you all my Barry Manilow albums." LB

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  6. #5
    Senior Member ezman671's Avatar
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    If the new sprocket is recessed where the bolt ring is be careful you do not bottom the bolts on the threads prior to tightening on the hub.



    Lotza of torque on bottomed out threads = 0 torque on sprocked/hub interface.



    New longer bolts or washers cures the problem.



    If you get new bolts do not use bolts that are threaded their whole length. Threads inside the material you are securing is not a great idea. In fact in most aircraft applications it is not allowed.

  7. #6
    Member Lido's Avatar
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    I just did mine 3 days ago and no issues. If your going to knock out the axle bolt use a rubber malet so you don't screw up the thread on the bolt. Once you have everything apart put a thin layer of greese on the axle bolt before reasembly. Have fun.

  8. #7
    Junior Member k9scooter's Avatar
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    Thanks for the replies, should go good and I bought the sunstar which looks like the stock one thats on it...

  9. #8
    Junior Member k9scooter's Avatar
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    Everything went well and the Sunstar bolted up correctly. Temp today was 84 , so good riding for now Mn.

  10. #9
    Banned qwerty's Avatar
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    Have fun!




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