Mini Trailer Motorized Bike Pusher

Discussion in 'Performance Mods' started by sensationpdx, Jan 11, 2008.

  1. sensationpdx

    sensationpdx Member

    Building a motorized bike pusher.

  2. sensationpdx

    sensationpdx Member

    Here are some links showing my first prototype using a Honda 50GX motor. I mounted it on a Trail-A-Bike frame.

    I rode it 1 day to collect data then tore it apart to rebuild it.
  3. sensationpdx

    sensationpdx Member

  4. Tom

    Tom Active Member

    wow! never seen anything like it!
  5. sensationpdx

    sensationpdx Member

    Hey Tom,

    How do I insert pictures into these replys?
  6. srdavo

    srdavo Active Member

    Click the link below for instructions on posting pics.

    can't wait to see your pics!!
  7. Jim H

    Jim H Guest

    Gotta say, that's pretty cool!
  8. Dockspa1

    Dockspa1 Guest

    Neato, but why did you do the tear down?
  9. JemmaUK

    JemmaUK Guest

    It looks great, and is obviously quick... I can see a couple of problems...

    What happens when you get into a tank-slapper because some mindless idiot hit the ABS in front of you....?

    There is a good chance in that situation that the engine unit - because its jointed to the back of the bike - will do a similar thing to a escaped truck trailer and end up in the last place you want it... the last thing you want is a bike with you on it doing a ground loop with you underneath it..

    The second thing that worries me is the controls - namely what happens if something goes wrong and the machine runs away on you - how do you kill the motor? because if you are running WOT and something breaks you wont be able to jump off safely...

    Good luck with it and apart from those points I like the idea - its a good example of lateral thinking :)

    Jemma xx
  10. cooltoy

    cooltoy Member

    GEEEEEZ!!!! MotherJemma,That was a HUGE turn-off,so much so that I have to get off this site for today. What if, what if , what if ,,,,,,what if the sky fell.......
  11. JemmaUK

    JemmaUK Guest

    *sigh* - to be honest it wasnt meant as a 'turn-off' as you put it, just a constructive critique...

    But if you think about it there have been many instances where bad design has caused injuries or worse and the manufacturers of said goods have been sued for it... at the moment this is unlikely considering that the MB concept is at the moment more a back yard tinkerers thing than otherwise...

    However, getting brained by a 15lb chunk of steel to the side of the head is not conducive to a happy life - afterlife maybe...

    As far as the design goes - damping the joint to the engine carrier would help enormously and would be simple to do... problem mostly solved - and a bike mounted fuel tank would solve the other issue - that of control failure...

    If you had read some of my other posts you might understand that I dont say this to be annoying - I say it because I dont want to come to this board and find out that someone who has been my friend has gone to the hardley-davison showroom in the sky because of a design flaw...

    lol - and 'MotherJemma' is quite the compliment actually ...

    Jemma xx
  12. ibdennyak

    ibdennyak Guest

    However, getting brained by a 15lb chunk of steel to the side of the head is not conducive to a happy life - afterlife maybe...

    Actually it would probably be a 12 pound chunk of aluminum. :grin: Just had to Must be pick on Mother Jemma day. :grin:

  13. Dockspa1

    Dockspa1 Guest

    Lets see, 12 lbs of steel or 12 lbs of aluminum, Hmm, which is heavier?
    As far as the controls getting away, you could always put a safety slide switch in place that disconnected if the rear end got past 90 degrees.
    Oh yeah, make sure your helmet is aluminum proof. Ah, but then again, you just might want to wear aluminum proofed underwear. Just in case you were hit from the back. Ha Ha Ha.
    Yeah it's best to be safe (they say)! :confused:
  14. sensationpdx

    sensationpdx Member

    I did the tear down for some of the reasons that Jemma raised. I like that type of feedback because it makes me think in other ways.

    I did some harsh testing and so far, I was unable to get it to fish tail. I am a cautious rider and would never tailgate a car.

    I will be hooking up a kill switch for the motor too : )
  15. sensationpdx

    sensationpdx Member

    I have double return springs on the cab linkage. The new design has a jack shaft set up that gives 2x the tourqe that I had before....LOL I tried it in a warehouse hallway and it laid a 30 foot line of rubber!

    I just got a new camera and will be posting pictures of thr build soon!
  16. sensationpdx

    sensationpdx Member

    Jemma I know its cause you really care! : )
  17. sensationpdx

    sensationpdx Member

    Because I live in southern VT, I increased the gear ratio and that has slowed it down to about 20-25MPH and gives me lots of tourqe to get up hills without having to pedal.
  18. kerf

    kerf Guest

    Stick with your plan, everyone that ever sailed into uncharted waters has had to listen to the play it safe naysayers.
    Last edited by a moderator: Jan 13, 2008
  19. mnbiker

    mnbiker Guest

    so how is the traction? Is it goon on city streets?
  20. Skyliner70cc

    Skyliner70cc Active Member

    I love it! You should clean up the design and commercialize it. I would buy one in a heartbeat.

    I wouldn't worry about the naysayers here.