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    ATC70 Technical Data

    Published on 12-23-2009 09:21 PM      Number of Views: 112045  

    Following Honda's undeniably huge success of the US90, the motorcycle giant set their sights a little lower and introduced the Honda ATC70. Even though in many circles, the adults seem to ride these like trikes the most, the Honda ATC70 was actually the first children's ATV ever produced.

    Debuting in 1973 Honda released the smallest three wheeler offered in their line up and continued it's production up until the 1985 production ban. Little known is the fact that the little trike was actually missing from Honda's lineup from 1975 until 1978. Speculation leads us to believe that sales may have been poor, or perhaps the public just wasn't ready for the little trike. Missing from action for 2 years though allowed Honda to refine the machine for it's return in 1978. Like the US90, now renamed the ATC90, the ATC70 received updated body styling, engine and drive train refinements along with it's bold new graphics.

    Weighing in at a measly 163.1 lbs but touting a 72cc displacement engine really gives the little ATC an incredible power to weight ratio. Small enough for children to ride, but powerful enough to carry around their parents, the 70 has been long favored as the perfect family machine, and an excellent pit bike! 70 racing actually developed a large following spawning a large support from the aftermarket. Many custom full suspended frames and other performance parts still float around auctions and sales even still today.

    General ATC70 Specifications
    Production Years : 1973-1974, 1978-1985
    Engine type : 4 Stroke, Air cooled
    Displacement : 72cc
    Bore x Stroke : 47.0 x 41.4 mm
    Compression ratio : 7.5 to 1
    Compression : 142 - 170 psi
    Transmission : 3 Speed, down/4 Speed, up
    Clutch Type : Semi-auto
    Oil Capacity : 1 QT
    Carburetion : ??mm
    Starting system : Recoil Starter
    Fuel capacity : 0.55Gal, 0.11Gal Res.
    Wheelbase : 36.2 in.
    Overall Length : 51.1 in.
    Overall Width : 31.5 in
    Ground Clearance : 4.25 in.
    Seat Height : 22.4 in.
    Front Tires : 16 x 8 x 7
    Rear Tires : 16 x 8 x 7
    Front Suspension : none
    Rear Suspension : none
    Front Brake : none
    Rear Brake : Cable operated Drum
    Final Drive : chain
    Dry Weight : 163.1 lbs.
    MSRP : $549.00






    Model Year Specific Specifications

    The first, and second generation ATC70s had some distinctly different characteristics which set them apart from the other years. Common to both years was a significantly different frame. The first 70s where produced much like Honda's older motorcycle models with a large shell like stamped sheet metal frame. The bearing assembly as well as the exhaust was actualy housed within the frame and the cavity was covered with a triangular perforated guard. Unlike the later models, the rear fenders where not much more than small flare like pieces of plastic that where attached to the sides of the sheet metal frame.

    The engine changed a bit over the production range. Several different transmission variants where used specific to year.

    Transmission Key

    1973-1974: 3 speed down
    1978-1981: 3 speed down
    1982-1984: 4 speed down
    1985: 4 speed up

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    Comments

    1. mreedbmwm3's Avatar

      mreedbmwm3 said:
      I love my 1985 ATC 70!
      [Reply]
    2. titeline22's Avatar

      titeline22 said:
      Quote Originally Posted by mreedbmwm3 View Post
      I love my 1985 ATC 70!
      1983 Honda ATC70 "Christmas Special"
      [Reply]
    3. ATC-RYDA's Avatar

      ATC-RYDA said:
      Quote Originally Posted by titeline22 View Post
      1983 Honda ATC70 "Christmas Special"
      im new to the site just figuring things out guys ....
      [Reply]
    4. tommy3wheel's Avatar

      tommy3wheel said:
      cannot get mine to start, but when i do it is very fun to ride.
      [Reply]
    5. ridered86's Avatar

      ridered86 said:
      70's are a blast! Can't get enough of mine!
      [Reply]
    6. GothboY's Avatar

      GothboY said:
      Quote Originally Posted by ridered86 View Post
      70's are a blast! Can't get enough of mine!
      I loved mine as a kid! Maybe ill get another! So... I cant seem to find anything really about my first atc. it was a 70 and it was orange. I think it had flames on it or something. what year is that one does anyone know?
      -GothY-
      [Reply]
    7. Monkey.penllwyn's Avatar

      Monkey.penllwyn said:
      Says stoped in 85 i have one that says 86 on it ? Is this right or ?
      [Reply]
    8. hoosierlogger's Avatar

      hoosierlogger said:
      Quote Originally Posted by GothboY View Post
      I loved mine as a kid! Maybe ill get another! So... I cant seem to find anything really about my first atc. it was a 70 and it was orange. I think it had flames on it or something. what year is that one does anyone know?
      -GothY-
      1973. Trust me, you wish you still had it!
      [Reply]
    9. greenhuman's Avatar

      greenhuman said:
      Quote Originally Posted by Monkey.penllwyn View Post
      Says stoped in 85 i have one that says 86 on it ? Is this right or ?
      I have one with a build date of 11/86
      [Reply]
    10. Chizil456's Avatar

      Chizil456 said:
      Exactly how rare are these 83 Blue atc70 Christmas specials?? Got one for 150$ and getting tank holes repaired and going over it all to make sure it will fire as it was sitting outside for last 12 years but in decent shape. Just wondering if I should keep it stock and buy another to make tricked out or what
      [Reply]
    11. efhondakid's Avatar

      efhondakid said:
      Quote Originally Posted by Chizil456 View Post
      Exactly how rare are these 83 Blue atc70 Christmas specials?? Got one for 150$ and getting tank holes repaired and going over it all to make sure it will fire as it was sitting outside for last 12 years but in decent shape. Just wondering if I should keep it stock and buy another to make tricked out or what
      You couldn't buy the specials. They were given to each Honda dealer across the country. You bought a raffle ticket at your local dealer and they called you on Christmas morning to tell you you won the trike. They are pretty rare. People do clone them but the original specials are worth a bit of coin as compared to the others. I myself would keep it all OE and pick up another to build a racer.
      [Reply]