Plans for a 2 speed dog clutch gearbox

Discussion in 'Frame Mounted Engines' started by Toddmoto, Sep 7, 2010.

  1. Toddmoto

    Toddmoto Member

    Alright do-it Yourselfer's...After saying I don't have time to build you one a million times...I took the time to draw up a simple 2 speed Hi-Low range gear box. small enough to fit a frame & tough enough to hammer on.

    Originaly designed to use with a tiny electric motor, I have upgraded the prototype & regularly push 3 hp through it. Aproaching a year of mostly off-road abuse without a glitch.

    here are a couple photos of the unit.
    on the bike..(its there)

    Any way, there it is if any one wants to scale it to fit their application
    reduction is 1.86-1 in low & 1.1-1 in high.
    Hope to see some built by the do-ers around. Thanks for looking & good Luck!

    Attached Files:

  2. GearNut

    GearNut Active Member

    Very cool! Thank you for taking the time to develop it and sharing the blueprints for it.
    This is very generous of you!
  3. skrufryder

    skrufryder Member

  4. skyl4rk

    skyl4rk Guest

    Thank you, very nicely done
  5. Toddmoto

    Toddmoto Member

  6. HeadSmess

    HeadSmess Well-Known Member

    that, my man, is beautiful :)

    combine with my mini generator im scratching up...

    i fear i have the same deal! time and money! the big one on the books at the mo is to retro my mill to CNC....then i can start being nasty to ally again :) accurately....
  7. buck

    buck Member

    Great Build. Wish that i had one for a Honda GXH50. Two thumbs up!!!!!
  8. loquin

    loquin Active Member

    Nice work! Thanks for sharing, Toddmoto.

    Where do you get your synchronous belts/pulleys?
  9. Toddmoto

    Toddmoto Member

    Thanks Lou,
    I use Stock drive products for the little details.
    they are quick on shipping & allways have stock......little pricy though.
    (i am a cheap sk8 at heart)
  10. Dankoozy

    Dankoozy Member

    Very nice piece of kit