Zomby Zack an old school chopper from scratch

Discussion in 'Performance Mods' started by Zomby Builder, Aug 14, 2007.

Tags: Add Tags
  1. This project started with two donar bikes. A tandem, and an old beach cruiser I picked up in Pacific Beach. IMG_0668.JPG The tandem had a nice rear wheel with a big drum brake. I had the hub relaced into a 24 inch aluminum wheel, with a 3 inch wide Fatti O tire. Thanks to Sam at Hidden Valley bicycles in Escondido CA IMG_0821.jpg


    Next I built the rear end using the tandem tubing & drop outs. This needed to be widened for the wide tire & chain clearance. I chopped the beach cruiser completely in half at the seat post. After eliminating the seat post there was a lot of room for the motor, and by rocking it back increased the rake for the front end. I welded another bottom bracket into the frame to house the internal jackshaft and used the weld on supports that came with the go cart jackshaft kit to support the other end of the axle. IMG_0783.jpg


    Next I mounted the motor, a 49cc Chinese MOON (Mitsubishi Clone) 2 stroke with a CVT torque converter. This motor was a take off from a go ped I bought off ebay new for $199.00. I mocked up the rest of the bike & test drove it to make sure it worked.

    I dis assembled the bike to the frame & had it powder coated gloss black. $110.00 at North County Powder coating in San Marcos CA.
    IMG_0822.jpg IMG_0823.jpg IMG_0824.jpg

    Ready for re assembly. I mounted the rear wheel to center & allign with the drive sprocket. Then the jackshaft was assembled

    Attached Files:

    Last edited by a moderator: Aug 14, 2007

  2. Zomby Zack continued

    This may take 4 posts to complete.

    Jack shaft assembly IMG_0825.jpg

    Freewheel adapter two sprockets IMG_0826.jpg

    Freewheel adapter 1 sprocket IMG_0827.jpg

    European 3 piece crank adapter for bottom brackets to house jackshaft bearings IMG_0828.jpg

    Front view IMG_0829.jpg

    Rear view IMG_0830.jpg

    Rolling Chasis IMG_0832.jpg IMG_0837.jpg IMG_0833.jpg [/ATTACH]

    Attached Files:

  3. azbill

    azbill Active Member

    cool thread !!! :D
    lots of good ideas/info
    thanks ! :cool:
  4. Excellent. The detail you have posted is great:D

    Sweet looking bikes also.

    Very well done.
  5. locoWelder

    locoWelder Guest

  6. Zacks Crank & pedal drive

    I assembled the crank & chain drive to the rear, everything lines up well so far. The crank had to be wider on the right to clear the CVT / left side stock Grubee. I fabed the Crank & kicked the sprocket over to the right to line up with the jackshaft sprocket. I made another crank similar to this one & it has worked great for over 1 year. (see ZENA)




    This really dry runs smooth. I will now finish the front end, hook up brakes, tighten everything, put the seat & pedals on, test drive with only the pedal drive to make sure all is well before installing the Motor.





    Stay tuned.
    Last edited by a moderator: Aug 18, 2007
  7. gone_fishin

    gone_fishin Guest

    woohooo...nice post! i do believe he's got the "attach" code down proper :)

    and...great info too...some very interesting theory happening here...thanks!! 8)
  8. Zomby Zax Lives

    Pedaled it like a bike. OK on the beach, but way too much work for a 6% grade. Crank up the Chinese 49 & well "Holy mother of bring the dog in, Honey I'll hook the muffler up tomorrow.

    Runs like a dream. I have really been eyeing that Tanaka 4 hp motor....Def on the upgrade list.

    Picture 002.jpg

    Picture 003.jpg

    Picture 004.jpg

    Picture 006.jpg

    Picture 007.jpg

    Picture 008.jpg
  9. azbill

    azbill Active Member

    nice pics :D
    what kind of speedo is that you molded into the tank ?
  10. iRide Customs

    iRide Customs Member

    Nice clean build ya got there Zomby. I love the progress pics. The work on the tank is awesome!
  11. Speedo

    Thanks. I got this tank off a donar Whizzer that was used on another build. I think Dave Miller of Fullerton made it. You can't see in the pics but it has the Whizzer logo embossed on the sides. I had to shorten the front end two inches more than I would have liked to make the cable drive reach the front wheel. My friend Richie painted the flames & it looks better live than these pics show. The flash from the camera makes it look pebbley. I need to do some more minor tweaks & then I'll post some good pics in the pic gallery.
  12. Jim H

    Jim H Guest

    Nice post/work Zomby B.
  13. almost there

  14. Finished

    I changed the crank & extended the right pedal to clear the CVT. This is a little narrower so you don't scrape the pedal during a U turn....




  15. JosephGarcia

    JosephGarcia Guest

    what is the plate to? just having it side mounted instantly reminded me of the bobber conversion i wanted to do to my sportster awhile back
  16. The plate is DMV. Do you mean what is it attached to? The plate frame is welded to the frame.
  17. sniff* so beautiful...
  18. Scottm

    Scottm Guest

    Dude, you are amazing.You have a gift.
  19. Dockspa1

    Dockspa1 Guest

    Excelente! You really did a great job. All my hats are off to you!
    Can't say enough!
  20. You did a nice job there Zomby. Bike looks awesome.