Removing the Threaded Rods From motor mount(Happy Time)

Discussion in 'Frame Mounted Engines' started by jboisclair, Aug 15, 2008.

  1. jboisclair

    jboisclair Member

    Hey I was hoping someone could tell me how to remove the threaded studs from the motor.(HAPPY TIME) One of mine broke off,(My first build lol) I havent gotten a close look at it yet but I was wondering if you had to take apart the whole engine or just unscrew it somehow.

    I would like to replace all of the mounts with the m6 or m8 threaded rod im not sure which one it is, but hopefully they will be much higher quality and will not snap on me again.


    (Now to get a new master link clip because that also broke on me)

  2. stude13

    stude13 Active Member

    hi jb; run one nut on then another, tighten them together, put wrench on lower nut and remove. i replaced all hardware. buy allthread and cut it for studs. take one of each of the others to a hard ware and get replacements and extras. mitch
  3. hill climber

    hill climber Member

    you might have to drill into the end of the broke stud and use an easy out, or other remover, to back the broken piece out. also make sure your mounts set flush on the frame if not file them so they do and that should help
  4. jboisclair

    jboisclair Member

    Thanks guys
  5. Skyliner70cc

    Skyliner70cc Active Member

    If the broken stud is sticking out, use a vise group and twist it out. If it is broken and not sticking out, you will need to drill a small hole in the stud and use an appropriately sized ez out extractor to remove it. Use a punch to mark the center of the stud before you drill the hole or the drill bit will wander
  6. arceeguy

    arceeguy Active Member

    Has anyone found a source for the metric threaded rod in a high strength alloy? I am getting a HT engine and want to take care of any known reliability issues before I even start it!
  7. Pablo

    Pablo Motored Bikes Sponsor

    You can get 10.9 if you go to some more exotic extremes however you may then run into brittleness issues, 9.8 may be ideal, but really 8.8 is all you need. You won't pull threads or worry about them snapping even up to 18 ft-#'s, which is above what the Chengines recommend.
  8. spad4me

    spad4me Member

    Did the broken stud break off flush (even with the surrounding surface)?
    If so slot the piece with a dremel cut off wheel, and use a screwdriver to unscrew it.
  9. jboisclair

    jboisclair Member

    Thats a very good idea I may try that now because it did break off flush, I was going to try the ez out extractor also.