Announcement

Collapse
No announcement yet.

Best way to rough up a smooth shaft for a plastic pinion gear?

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • Best way to rough up a smooth shaft for a plastic pinion gear?

    I am wanting to install a plastic pinion gear on a slimline motor with a smooth shaft. Might anyone have some suggestions on the best way to rough up the smooth shaft prior to installing the pinion so that the hold can be secure?

  • #2
    I use a pair of dykes to rough up the shaft. That sounds wrong in so many ways...

    Comment


    • Michael C.
      Michael C. commented
      Editing a comment
      Thanks, I had to google the word to find out what kind of tool a dyke is. I believe I have one somewhere in the house so I'll have to go find it.

  • #3
    I have also had good luck just pushing them on with some red loctite on the shaft after using a scrotch brite pad. Haven't had a problem yet!

    Zack

    Comment


    • Michael C.
      Michael C. commented
      Editing a comment
      Thanks also. I do have some Loctite red.

  • #4
    A little rough up with some 220, then use some Loctite 271. Also know that there is a difference in the Loctite products. Red 262 is medium strength, 271 is high strength. But why use a plastic pinion?
    Last edited by War Eagle River; March 9, 2020, 07:08 PM.
    Scott.....War Eagle River......Tampa, Florida, USA

    Comment


    • Michael C.
      Michael C. commented
      Editing a comment
      Thanks, I want to use a plastic pinion to prolong the life of the plastic crown gear. The crown gear is a part of a MRRC Sebring chassis axle assembly.

  • #5
    I have never had to replace a worn crown gear, brass pinion gears actually wear out much faster.

    Comment


    • #6
      I was going to comment on the dykes , but I will keep it to myself . And I figured using sand paper or Emory cloth to rough it up some , just for the locktite to bite on to .

      Comment


      • #7
        I bought brass rod to use as axles for my 1/24 scale dragsters and had to reduce the diameter of the axle to fit the wheels . I used emory cloth , WD40 and my Dremel to do it

        Comment


        • #8
          I use 220 grit paper, I clamp the other end of the shaft in a vise and then pull the 220 along the length of the shaft 3-4 times making sure I roughen the entire diameter. I then simply press the shaft into place with my gear press.
          no need for any glues. I use this method on my 1/24 Scale Auto cars with zero failures.

          Comment


          • #9
            Thanks for this discussion....it made me think I should upgrade my aging pottle of Loctite 262.

            On the shaft roughening topic...in the past I have heavily scored the shaft with sidecutters but these days just something that takes the shine off is enough. Sometimes I just dont bother and rely on the new clean shaft and the new clean pinion before adding some red stuff.

            Comment


            • #10
              I’ve repacked the gears on a number of Sebring chassis and have had no issues with a pressed on plastic pinion.
              If this car has a gray crown gear - get rid of it. They were problematical.

              Comment

              Working...
              X
              UA-149438709-1