Other Bikes: 1974 CT70 - "Duckie Mo-Mo" Build Thread
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Thread: Other Bikes: 1974 CT70 - "Duckie Mo-Mo" Build Thread

  1. #1
    Senior Member ScramblerCurtis's Avatar
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    Other Bikes: 1970 CT70 - "Duckie Mo-Mo" Build Thread

    Well now that I have my CL350 finished (aside from little tweaks and tuning) I am turning my attention to a little bike for my kids (and me ).

    So starts project Duckie Mo-Mo. The name was derived from my daughter who remarked that its candy yellow color is like a duck and Mo-Mo is how she used to pronounce motorcycle (momocycle).

    So when I picked it up for $120 it was a real basket cask. Parts in cardboard bins and a rolling chassis. There are numerous NOS parts for the build that the PO bought but he ran out of time and enthusiasm.
    Other Bikes: 1974 CT70 - "Duckie Mo-Mo" Build Thread-wp_20160315_001.jpgOther Bikes: 1974 CT70 - "Duckie Mo-Mo" Build Thread-wp_20160315_003.jpgOther Bikes: 1974 CT70 - "Duckie Mo-Mo" Build Thread-wp_20160315_002.jpg

    So over the weekend I started to tear down the motor and clean. Having just rebuilt my CL350 I was much more comfortable ripping this one apart and splitting the cases. Only took about 2 hours to split.
    Other Bikes: 1974 CT70 - "Duckie Mo-Mo" Build Thread-wp_20161126_001.jpgOther Bikes: 1974 CT70 - "Duckie Mo-Mo" Build Thread-wp_20161126_002.jpg

    And with a bunch of elbow grease and lots of solvents it is now cleaned and ready to put back together. Just have to wait on a bunch of parts I just ordered and this motor will be rebuilt quickly. In all about 10 hours.
    Other Bikes: 1974 CT70 - "Duckie Mo-Mo" Build Thread-wp_20161127_001.jpg
    Last edited by ScramblerCurtis; 11-28-2016 at 01:34 PM.
    bilbikek411, danno, Lefty and 1 others like this.
    Curtis

    1969 Honda CL350 K1 - Done (Project Log)
    1970 Honda CT70 Trail K0 - Duckie Mo-Mo (Project Log)
    1971 Benelli Mini Enduro 65cc - "Faust" (future build)
    1999 Honda XR400R - Project "Ranger" Adventure Bike (next build)

  2. #2
    Senior Member ScramblerCurtis's Avatar
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    And if anyone has a right side case they can part with I need a replacement (huge crack).
    Curtis

    1969 Honda CL350 K1 - Done (Project Log)
    1970 Honda CT70 Trail K0 - Duckie Mo-Mo (Project Log)
    1971 Benelli Mini Enduro 65cc - "Faust" (future build)
    1999 Honda XR400R - Project "Ranger" Adventure Bike (next build)

  3. #3
    Senior Member ScramblerCurtis's Avatar
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    Well a little update. Ive been reading a ton on the electrics for this little bike. Since this is a 6Volt system I wanted to upgrade it to 12Volt so I don't have to hunt all over for obsolete parts and such and I can use a Trail Tech Vapor. Heres the issue. On this bike there are spots for two Stator coils under the magneto. One for points ignition and charging and one for lights. In order for this to work I've been told that i need to upgrade to a 12v crank, flywheel, stator assembly, CDI module, magneto and a new reg/rec to handle the 12V. All of this will cost about $250+ that I don't want to spend.

    So heres is my question - could I wire both of the Stator coils together (via a floating ground they mentioned) through a 12V reg/rec and then drive the ignition coils, batter charging and lights/accessories all out of the reg/rec output??

    Here is the wiring diagram -

    Other Bikes: 1974 CT70 - "Duckie Mo-Mo" Build Thread-ct70_wiring_diagram.gif

    Here is the configuration of the coils - one on the right is the lighting coil.
    Other Bikes: 1974 CT70 - "Duckie Mo-Mo" Build Thread-magneto_stator_plate2.jpg


    Here is a diagram that looks similar to what I think it should look like
    Other Bikes: 1974 CT70 - "Duckie Mo-Mo" Build Thread-z50r_xr_hybrid_streeet_wiring_add.png
    Curtis

    1969 Honda CL350 K1 - Done (Project Log)
    1970 Honda CT70 Trail K0 - Duckie Mo-Mo (Project Log)
    1971 Benelli Mini Enduro 65cc - "Faust" (future build)
    1999 Honda XR400R - Project "Ranger" Adventure Bike (next build)

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  5. #4
    Senior Member danno's Avatar
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    Are you looking for the outer right side case? If so, maybe this will help. Honda CT70 Engine Clutch Cover Case Right Side CT 70 3 Speed Automatic | eBay
    1973 Honda CB450k6
    1978 Yamaha SR500e
    1978 Yamaha XS650se Special
    1981 Yamaha SR250t
    2000 Harley Davidson Sportster XL1200c Custom
    2006 Hi Tong 150cc gy6 scooter

  6. #5
    Senior Member ScramblerCurtis's Avatar
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    Yep Danno that's the one but I can buy a brand new one for $30 just didn't want to spend that much. Was hoping to get out for leas than a Jackson.
    Curtis

    1969 Honda CL350 K1 - Done (Project Log)
    1970 Honda CT70 Trail K0 - Duckie Mo-Mo (Project Log)
    1971 Benelli Mini Enduro 65cc - "Faust" (future build)
    1999 Honda XR400R - Project "Ranger" Adventure Bike (next build)

  7. #6
    Senior Member bilbikek411's Avatar
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    Curtis,
    I upgraded an XL185 stock engine stator to run 12vt. by swapping-out the stock oem 6vt. reg/rect. and installing a 5-wire 12vt. reg/rect. from SparkMoto(Matt)which runs all my electrics and charges the 12vt. battery I installed,everything except the headlight.I think the CT70 also has a separate headlight only function in the stator coil that runs the headlight direct from the stator even if your battery is dead/gone.. I have that feature on my XL185 stock stator also(which I'm still using and getting good 12vt. power from)and I purchased a "12vt. regulator" from Matt and wired it directly in-series to the wire coming from the stator going to the headlight circuit/switch and that runs a 12vt. headlight direct from my AC alternator/stator;I run a 35/35wt. 12vt. headlight.
    Have you asked Matt over there at SparkMoto this same question ?
    That pic you uploaded of the stator coils,are they stock Honda on your present bike ?
    Last edited by bilbikek411; 11-30-2016 at 08:26 AM.

  8. #7
    Senior Member ScramblerCurtis's Avatar
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    Hey Bill - that is not a picture of my bike parts. That is just a stock photo showing the setup since mine is completely apart. I have not approached Matt at Sparck yet to go over this but from my simple descriptions I think that it should work. I would just have to re-wind the lighting coil to produce the voltage into a reg/rec then work in the sparking mechanism through the CDI to the ignition coil.

    My hope was to prove the concept and then do all of the work myself so I don't spend a huge amount of money. I want to keep it less than $80 to do it all if at all possible.
    Curtis

    1969 Honda CL350 K1 - Done (Project Log)
    1970 Honda CT70 Trail K0 - Duckie Mo-Mo (Project Log)
    1971 Benelli Mini Enduro 65cc - "Faust" (future build)
    1999 Honda XR400R - Project "Ranger" Adventure Bike (next build)

  9. #8
    Senior Member KnucleBusting360's Avatar
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    HA! ... love the name! ... my daughter has a yellow rain slicker that she refers to as Duckie MoMo! ...
    ScramblerCurtis likes this.

  10. #9
    Senior Member dtsmjr8dan's Avatar
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    Curtis, give ctrider a PM. He's into those CT's. He might have some good sources for parts and advice for you.
    1979 CM400T (rider),
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    1982 CB450 (parts bike)
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  11. #10
    Senior Member ScramblerCurtis's Avatar
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    Quote Originally Posted by dtsmjr8dan View Post
    Curtis, give ctrider a PM. He's into those CT's. He might have some good sources for parts and advice for you.
    That was my first step - to PM CTRider. He had some good direction on a big thread but it covered a different engine (aftermarket LIFAN). I also contacted Matt at SparckMoto and hope that he can get working with me on an electrical diagram to incorporate the original 6V coils/magnetos and some updated hardware from SparckMoto. Once this is sorted I will get to work on building a wiring harness for the project and re-winding the lighting coil.
    bilbikek411 likes this.
    Curtis

    1969 Honda CL350 K1 - Done (Project Log)
    1970 Honda CT70 Trail K0 - Duckie Mo-Mo (Project Log)
    1971 Benelli Mini Enduro 65cc - "Faust" (future build)
    1999 Honda XR400R - Project "Ranger" Adventure Bike (next build)

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