AMF Roadmaster

Discussion in 'Motorized Bicycle General Discussion' started by dracothered, Jul 18, 2013.

  1. dracothered

    dracothered New Member

    Joined:
    Jul 25, 2012
    Messages:
    973
    Likes Received:
    0
    Getting a AMF Roadmaster frame today and I am thinking of motorizing it.
    [​IMG]

    Here is an example, but I want to put it under the tube.
    [​IMG]

    Using the rear wheel and forks from this.
    [​IMG]
     
    #1 dracothered, Jul 18, 2013
    Last edited: Jul 18, 2013
  2. dracothered

    dracothered New Member

    Joined:
    Jul 25, 2012
    Messages:
    973
    Likes Received:
    0
    Got the frame today and boy does it ever have a big seat tube.

    [​IMG]

    [​IMG]
     
  3. dodge dude94

    dodge dude94 New Member

    Joined:
    Jun 8, 2012
    Messages:
    1,017
    Likes Received:
    0
    That's gonna be a pretty sweet little pocket bike when you're done with it! :D
     
  4. CTripps

    CTripps Active Member

    Joined:
    Aug 22, 2011
    Messages:
    1,311
    Likes Received:
    0
    Interesting. Should be a cool bike when you're done. Are you going to go with a rear mount tank? It looks like the one in your example is never going to be able to use more than half a tank of juice no matter what happens due to the angle it's mounted at.
     
  5. dracothered

    dracothered New Member

    Joined:
    Jul 25, 2012
    Messages:
    973
    Likes Received:
    0
    I was thinking of mounting a tank on the down tube like on many mopeds.
     
  6. wheelbender6

    wheelbender6 Active Member

    Joined:
    Sep 4, 2008
    Messages:
    3,816
    Likes Received:
    10
    Was that bike originally motorized from the factory? If so and there is a legible Serial no on the frame, you may be able to tag and insure it.
     
  7. dracothered

    dracothered New Member

    Joined:
    Jul 25, 2012
    Messages:
    973
    Likes Received:
    0
    Yes it was motorized and the tag is there, but someone screwed it up...
     
  8. dracothered

    dracothered New Member

    Joined:
    Jul 25, 2012
    Messages:
    973
    Likes Received:
    0
    Ok, so I start removing parts from the Schwinn StingRay to test fit them on the AMF frame and at first I think the steer / head tube was going to be the wrong size. Well the only issue I have with it is the length.
    [​IMG]

    You don't see no pink handle bars there, they are not the handle bars you looking for.
    [​IMG]

    [​IMG]

    I then notice that the seat post is almost the same diameter as the seat tube on the frame, this is just crazy insane.
    [​IMG]

    [​IMG]
     
  9. dracothered

    dracothered New Member

    Joined:
    Jul 25, 2012
    Messages:
    973
    Likes Received:
    0
    Here is a virtual Mock up of what it could look like...

    [​IMG]
     
  10. KenX

    KenX New Member

    Joined:
    Apr 20, 2013
    Messages:
    252
    Likes Received:
    0
    Extremely cool!!
     
  11. CTripps

    CTripps Active Member

    Joined:
    Aug 22, 2011
    Messages:
    1,311
    Likes Received:
    0
    Looks good in the mock-up pics, it's definately going to be a nice bike when you're done. I wondered because it looks like there's plenty of room under that rear rack to sling a tank, and maybe a battery box for lights too.
     
  12. dracothered

    dracothered New Member

    Joined:
    Jul 25, 2012
    Messages:
    973
    Likes Received:
    0
    Alright I got the Mad Scientist tools out and started a hacking and grinding away the parts that don't fit.

    So here is what popped out of the cutting, hacking and grinding....
    [​IMG]
    [​IMG]
    [​IMG]

    Then I had to see what seat might look good on it., still pondering that question.
    [​IMG]

    [​IMG]
     
  13. dracothered

    dracothered New Member

    Joined:
    Jul 25, 2012
    Messages:
    973
    Likes Received:
    0
    More seat choices...

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]
     
  14. dracothered

    dracothered New Member

    Joined:
    Jul 25, 2012
    Messages:
    973
    Likes Received:
    0
    Did some welding today and another Mock up of the bike...

    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]

    I also switched out the bearing cups for the Head Tube with the ones from the Schwinn. The shocking fact is the AMF head tube is for a 1 1/8" setup and was built back in the 70's like this.
    [​IMG]
     
  15. dracothered

    dracothered New Member

    Joined:
    Jul 25, 2012
    Messages:
    973
    Likes Received:
    0
    Here is the 3rd Mock up of the bike.

    [​IMG]
    [​IMG]

    I thought I would see what it would look like with a 20" wheel on the front also. Yes that is a set of forks from a Beast.
    [​IMG]
    [​IMG]
     
  16. maniac57

    maniac57 Old, Fat, and still faster than you

    Joined:
    Oct 8, 2011
    Messages:
    4,486
    Likes Received:
    3
    I like the bigger wheel myself...fork looks wonky with the "20
     
  17. dracothered

    dracothered New Member

    Joined:
    Jul 25, 2012
    Messages:
    973
    Likes Received:
    0
    I am still thinking about the 20" wheel, but not totally hooked on it.

    I had to cut and weld the steer tube because it was a little over an inch to long. I use a part of a 1" steer tube to slide the two halves together on and to keep it straight.
    [​IMG]

    [​IMG]
     
  18. dracothered

    dracothered New Member

    Joined:
    Jul 25, 2012
    Messages:
    973
    Likes Received:
    0
    This is the engine I am thinking of using, it is a Motobecane AV10 Crate Motor.

    [​IMG]

    [​IMG]
     
  19. silverbear

    silverbear The Boy Who Never Grew Up

    Joined:
    Jul 9, 2009
    Messages:
    8,186
    Likes Received:
    8
    Draco,
    I just saw your thread and am glad to see that someone else saw possibilities in the AMF Raodmaster frame.

    Here's what I did with one a couple of summers ago.
    http://motorbicycling.com/showthread.php?t=32625

    Mine uses a Tomos A35 engine hung under the frame. I haven't done much with it since this thread and it is still sitting on the back burner awaiting attention. A couple of changes since the last post in my thread is that I made up extensions for the rear dropout so that I can use bigger wheels and set the axle back a bit. I had some old light motorcycles given to me by a friend in various states of rusty not all there and am using a set of drum brake hubs for the front and rear. I don't know yet whether I will go with 24" or 26" wheels, but now have the hubs anyway. I recently bought some 26" X 2.4" Cyclops tires for another build that I can easily picture on this AMF. On the other hand 24" X 3" tires would be killer.

    The frame lends itself to lots of possibilities. If I had the funds and was doing another one I'd consider the Honda clone that is 50CC, has built in pedals and a built in multi speed transmission, five speeds if I remember right... hang it under that frame and go!

    Carry on, sir!
    SB
     
  20. comfortableshoes

    comfortableshoes New Member

    Joined:
    Jul 22, 2008
    Messages:
    606
    Likes Received:
    0
    I just saw one of these for sale on craigslist with the original motor for $75. I should have bought it, but I've got too much stuff in the garage and lack funds. They were a weird little moped.
     

Share This Page