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1972 Z50 budget build

This is a discussion on 1972 Z50 budget build within the Z50, CT70 and JDM Monkeybikes forums, part of the General Talk category; Hit the bike with some simple green, brush, and garden hose. Fixed the throttle issue, and the wife took it out for a spin....

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  1. #16
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    Hit the bike with some simple green, brush, and garden hose. Fixed the throttle issue, and the wife took it out for a spin.

  2. #17
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    1972 Z50 Street Legal Build

    Doing some research on CA laws and it looks like I might be able to get around having turn signals being my bike is older than 1973. *Note* If I end up making this a commuter I will add blinkers for my own personal safety.

    VEHICLE CODE
    SECTION 24951

    24951. (a) Any vehicle may be equipped with a lamp-type turn signal
    system capable of clearly indicating any intention to turn either to
    the right or to the left.
    (b) The following vehicles shall be equipped with a lamp-type turn
    signal system meeting the requirements of this chapter.

    (1) Motortrucks, truck tractors, buses and passenger vehicles,
    other than motorcycles, manufactured and first registered on or after
    January 1, 1958.
    (2) Trailers and semitrailers manufactured and first registered
    between December 31, 1957, and January 1, 1969, having a gross weight
    of 6,000 pounds or more.
    (3) Trailers and semitrailers 80 or more inches in width
    manufactured on or after January 1, 1969.
    (4) Motorcycles manufactured and first registered on or after
    January 1, 1973, except motor-driven cycles whose speed attainable in
    one mile is 30 miles per hour or less.

    The requirements of this subdivision shall not apply to special
    mobile equipment, or auxiliary dollies.
    (c) Turn signal lamps on vehicles manufactured on or after January
    1, 1969, shall be mounted not lower than 15 inches.

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    i think getting it thru inspection WITH them will cause you alot less hassle..id say wire up for it..put em on for inspection and then remove them if you want
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  5. #19
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    Well what I thought was going to be a budget build has turned into 600$ in parts coming in the mail... And still need to find some dot approved 4.00x8 tires.

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    Not to be a killjoy, but is a battery required? I had an overzealous inspector referring to VC Section 24252 with zest and zeal, asking where's the battery. Fortunately my Z50A was equipped... picky bugger.

    Nice to see your desire to register the Z50 for the street.
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  7. #21
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    I bought the 60$ wire harness from webike. Just have to figure out how to hook it up next! Also how to do the brake lights. My plan is to find the smallest battery I can and find somewhere to mount it. Do you have any pics of the battery you used and how you mounted it?

    Also pulled the exhaust off and a chunk is missing. Not sure what it is called. Cam cover? If I upgrade to a 88cc kit would it include this part? Click image for larger version. 

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  8. #22
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    -Brake cables are sold with brake light switches integrated within.
    -The K1 had a battery box already mounted... maybe you could install an RC type battery under the seat pan area. Your bike may need an AC generator and rectifier if you wish to charge the battery. Otherwise, just have the battery wired so it doesn't get charged, only to appease the law.
    -The area near the exhaust port is how they were. Sounds like you're upgrading to a larger displacement bore and perhaps a new cylinder head with the 88cc kit.
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  9. #23
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    Quote Originally Posted by Mini K1 View Post
    -Brake cables are sold with brake light switches integrated within.
    -The K1 had a battery box already mounted... maybe you could install an RC type battery under the seat pan area. Your bike may need an AC generator and rectifier if you wish to charge the battery. Otherwise, just have the battery wired so it doesn't get charged, only to appease the law.
    -The area near the exhaust port is how they were. Sounds like you're upgrading to a larger displacement bore and perhaps a new cylinder head with the 88cc kit.
    Battery will just be for the blinkers, horn, etc to get past inspection. Good idea on using a tiny lipo battery.

    And good to know about the brake cable! I have been through a ton of diagrams trying to figure that out. Is the front cable the same?

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    Yes, front and rear cables are configured with the switch within... have fun with the build.
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  11. #25
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    Picked up some K75 4-8 tires. Only 45$ each shipped right now from: https://www.jcmotors.com/heidenau-k7...-p?keyword=k75

  12. #26
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    good info here on the electrical.
    1975 z50 stator light coil output test...

  13. #27
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    Been busy cleaning and polishing! Stripped the engine down and going to replace the piston and all the gaskets etc. Got started on the rims and tires and wow! The tires are stuck to the rims.. Also the the price just keeps going up, most likely going to need new rims, and going to need to replace the wheel bearings and seals, never ends!

    Got my first order from webike!! Other order is back ordered till march.





    Anyone have any tips on how to mount the speedometer piece to the wheel?

  14. #28
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    [QUOTE=Quinc;2070279]

    Anyone have any tips on how to mount the speedometer piece to the wheel?
    [/QUOT]

    You might have a problem with that. The front hub has to be cut for the speedo drive. I think the early hardtail bikes had such hubs. I don't believe the softtails do. Here's a picture of a speedo drive on a Chinese Lifan hub.
    Click image for larger version. 

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    Hardtail version definitely had that area notched out, and the hub was a bit raised as well like in the picture
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    By the way, the headlight on your bike is the steel hard tail type. If you decided to go with the soft tail version to accommodate a speedo, that headlight will command some money on ebay.
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