Briggs 3.5 hp 4stroke, to "Rubber" or not?

Discussion in 'Rack Mounted Engines' started by E=mc^2, May 12, 2011.

  1. E=mc^2

    E=mc^2 New Member

    Hi guys,
    I've got a Briggs Quantum 3.5hp push mower engine(converted to horizontal shaft, running nice) and it vibrates like crazy when it starts, I would like to know if it is ok to solid mount it on a bike? will the bike vibrates to pieces? I've read some comments about solid mount, most of it are dealing with 2stroke 80cc stuff. When dealing with 3.5hp engine, wouldn't be better to attach rubber on it? Please let me know what you guys think.

  2. srdavo

    srdavo Active Member

    1st off..... tell how you converted it to horizontal shaft?????
  3. Wheres my dog

    Wheres my dog Banned

    I am with srdavo...

    Tell us exactly how you converted this to a horizontal shaft engine???
  4. shiloh0

    shiloh0 New Member

    theres you tube vids that show how to convert vertical to horizontal
  5. E=mc^2

    E=mc^2 New Member

    rotate the carb 90 degree, add oil dipper on the crankshaft(linkage) and make a mounting bracket :grin5:
  6. 5-7HEAVEN

    5-7HEAVEN Guest

    I would not solid-mount that engine.

    I use swatches of bicycle tire(not tube) to insulate my engine's motor mount.

    It works well.

    FWIW, you could tune the engine. Maybe that would help it run smoother on start up.
  7. rustycase

    rustycase Banned

    IIRC, the blade of the mower acts as a flywheel.
    When that is gone, things might not be balanced properly???
    Not sure of a fix, perhaps someone else could make a suggestion?
    Good luck
  8. james65

    james65 Member

    Rubber mount

    Could you post a few pictures of your engine mounted?