Look what I found! Look what I found!

Discussion in 'Motorized Bicycle General Discussion' started by Bikeguy Joe, Dec 2, 2008.

  1. Bikeguy Joe

    Bikeguy Joe Godfather of Motorized Bicycles

    Joined:
    Jan 8, 2008
    Messages:
    11,529
    Likes Received:
    1
    I got this from the place I live...I bought the place 5 years ago.

    I cleaned out about 20 yards of garbage from the back garage when we bought it and I left a little pile of wood sitting there for the past 5 years.

    Today, I was cleaning out a place to put a workbench my dad gave me, and I removed the wood to find this engine half buried in the mud and gravel.

    It's a Sachs and it says 73cm...not sure what that means yet.

    The fins are HUGE, but the cylinder itself isn't (The fins are 7 1/2" x 6" and the bolts for the jug are only 2 1/2" across.)

    It has a four bolt pattern that would allow it to easily be mounted on a flat of some sort...rack mount?!?

    The piston looked bad, but I sprayed it with some penetrating oil and the "rust" wiped right off. It is, however, frozen solid.....
     

    Attached Files:

  2. bumleg

    bumleg New Member

    Joined:
    Nov 8, 2008
    Messages:
    41
    Likes Received:
    0
    im guessing an old sno mo engine.good luck with thawing her out.
     
  3. Bikeguy Joe

    Bikeguy Joe Godfather of Motorized Bicycles

    Joined:
    Jan 8, 2008
    Messages:
    11,529
    Likes Received:
    1
    It's pretty small. I'm guessing 70-100cc's. I'll measure it when/if I get it apart.
     
  4. Bikeguy Joe

    Bikeguy Joe Godfather of Motorized Bicycles

    Joined:
    Jan 8, 2008
    Messages:
    11,529
    Likes Received:
    1
    PB Blaster, I'm soaking in it now.
     
  5. misteright1_99

    misteright1_99 New Member

    Joined:
    Mar 21, 2008
    Messages:
    716
    Likes Received:
    0
    If PB Blaster dont do it nothing will. That stuff is the Best!!!!!!!
     
  6. eDJ

    eDJ New Member

    Joined:
    Jul 8, 2008
    Messages:
    531
    Likes Received:
    0
    I've had great luck using brake fluid, or diesel fuel, or marvel mystery oil. Haven't use PB blaste yet.

    If you can use a hot air gun on the cylinders and get it hot so it will expand it may open up the bore so the penetrant you're using can seep in deeper. It'll probably free up with a little persuasion from the wooden handle of a hammer once you get the head off. Then try rocking the crank left and right with a wrench.

    I've freed up alot of motors that locked up from just setting that way.
     
  7. Bikeguy Joe

    Bikeguy Joe Godfather of Motorized Bicycles

    Joined:
    Jan 8, 2008
    Messages:
    11,529
    Likes Received:
    1
    Here's a couple of more...I took the head off and it looks like it hasn't been run!

    The pics are out of focus, but give an idea. No carbon, the dark in the head is shading.

    I figured it at roughly 98cc's- 50mm bore, guessing at the stroke.
     

    Attached Files:

  8. Dave31

    Dave31 Moderator
    Staff Member

    Joined:
    Mar 1, 2008
    Messages:
    11,207
    Likes Received:
    13
    Nice find Joe!! I did find a old maytag washer machine buried like three feet in the ground when I was planting a tree in my backyard. Have no ideal how it got there.

    A motor is a little more exciting (^)
     
  9. Bikeguy Joe

    Bikeguy Joe Godfather of Motorized Bicycles

    Joined:
    Jan 8, 2008
    Messages:
    11,529
    Likes Received:
    1
    Oh yeah, Hoppes gun nitro does the trick too...
     
  10. Bikeguy Joe

    Bikeguy Joe Godfather of Motorized Bicycles

    Joined:
    Jan 8, 2008
    Messages:
    11,529
    Likes Received:
    1
    It has a sweet little Bing carb on it, all in good shape. Too big for the Chinese bicycle motor though.:(
     
  11. Bikeguy Joe

    Bikeguy Joe Godfather of Motorized Bicycles

    Joined:
    Jan 8, 2008
    Messages:
    11,529
    Likes Received:
    1
    MAN! I am on a roll!

    I got it freed up, and cleaned it up a little. There is a very fine rust or darkening in the cylinder, but I couldn't feel it just saw it.

    I put the plug in it to turn it over to flush it out and make sure there is no crap in the bottom end, and it had loads of compression.

    Oh yeah, you know where this is going... I said to myself "I wonder if it is possible to have a bright blue spark since the plug wire comes right out of the case?"

    Yes, it did, and yes, it did!

    Gas down the carb, two pulls and it fired right off!!!! LOUD!dance1

    Now I have to figure out the threaded shaft part and see what I can hook up. It has about a half inch of thread, a keyway, AND a taper..bf.
     
  12. 2door

    2door Moderator
    Staff Member

    Joined:
    Sep 15, 2008
    Messages:
    16,301
    Likes Received:
    25
    Ahhh, excuse me, but I think that's my motor. I remember being in Ohio several years ago and I left that thing laying somewhere. Ah, could you pack it up and send it back to me? Thanks.
     
  13. bumleg

    bumleg New Member

    Joined:
    Nov 8, 2008
    Messages:
    41
    Likes Received:
    0
    man that is amazing..
    i cant even get my car to start that easilly lol
     
  14. mechanickid

    mechanickid New Member

    Joined:
    Aug 7, 2008
    Messages:
    419
    Likes Received:
    0
    looks like a snowmobile engine, the old one's had big fins like that.
    i would take it apart to clean it, sitting is the worst thing for these. the magneeto will proably need to be checked too.
     
  15. ZnsaneRyder

    ZnsaneRyder New Member

    Joined:
    Nov 21, 2008
    Messages:
    163
    Likes Received:
    0
    Good find on the engine!

    2 stroke?
     
  16. mechanickid

    mechanickid New Member

    Joined:
    Aug 7, 2008
    Messages:
    419
    Likes Received:
    0
    oh wait, i didn't read the rest of this, never mind! congradulations on getting it going!! thats amazing.
    2door, you've got to be kidding!
     
  17. Norman

    Norman LORD VADER Moderator
    Staff Member

    Joined:
    Jan 16, 2008
    Messages:
    2,605
    Likes Received:
    0
    I'm guessing but I think that is an old Go Kart racing engine.
     
  18. mechanickid

    mechanickid New Member

    Joined:
    Aug 7, 2008
    Messages:
    419
    Likes Received:
    0
    interesting, didn't 2door say he used to race old go karts with his dad in his castor oil thread?
     
  19. Bikeguy Joe

    Bikeguy Joe Godfather of Motorized Bicycles

    Joined:
    Jan 8, 2008
    Messages:
    11,529
    Likes Received:
    1
    Heh, heh, 2door, the shipping will be 200.00 U.S. to my paypal account.

    I'll research it later today.

    It would make a good rack mount to take to Bonneville.....or for a trike or tandem bike...or...or...I may sell it since I am broke as a joke!
     
  20. Bikeguy Joe

    Bikeguy Joe Godfather of Motorized Bicycles

    Joined:
    Jan 8, 2008
    Messages:
    11,529
    Likes Received:
    1
    So far all I know is that it is a Sachs Model 80B go-kart engine. Hub or shaft r 73 whatever that means....so I guess I have a real live 80cc engine.

    Except the bore is 46mm and the stroke is 44mm, so that makes it a 69.94cc.:ride:
     

Share This Page