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    ATC185 and ATC185S Technical Data

    Published on 01-18-2010 04:08 PM
    For as much as the Honda US90 started it all, the ATC185 could be considered the first milestone in Honda's development of the ATC model line of off road vehicles. The ATC185 changed the face of three wheelers as we know them. A dramatic change from the stamped sheet metal frames of the 90s, 110s, and 125s, the 1980 ATC185 introduced for the first time a 185cc vertically up swept style engine surrounded by a full tube frame.

    Being indirectly related to the XL/XR motorcycle lineage, the ATC185's engine shares a large amount of parts and design details with several generations of off road vehicles. This lineage also lends itself to the fact that Honda utilized their proven engine design for several displacement variations throughout the ATC line. The ATC200, ATC200s, ATC200m and even the first generation 83-85 ATC200X all share a common engine design and in result have many interchangeable parts. A little known fact, the various crank shaft variations, cylinders, pistons and heads can be interchanged with enough research, in which the right combination can result in quite the performance increase!

    The ATC185 series also greatly expanded the ATC's popularity as a utility machine. The larger displacement ATC performed well beyond the capabilities of the venerable ATC90/110 as a load hauling, farm cruising, trailer pulling utility trike! Also of note were the various utility rack accessories available from both Honda and aftermarket manufactures to equip the ATC185 for utility use.

    As the trend goes, the ATC185 had a short year before it was renamed the ATC185S. The S designated the model as a sleeker, sportier design with a few refinements not quite blatant to the uninformed. It wasn't long until Honda upgraded the ATC yet again, bumping the displacement up as they introduced the ATC200. As much as one would think the ATC200 would steal the lime light from the ATC185, the smaller engined trike remained in the Honda lineup as just that, a smaller displacement model for several years to come.

    General ATC185 Specifications
    Production Years : 1980
    Engine type : 4 Stroke, Air cooled
    Displacement : 180.2cc
    Bore x Stroke : 63 x 57.8 mm
    Compression ratio : 8.0 to 1
    Compression : 142 - 170 psi
    Transmission : 5 speed
    Clutch Type : Semi-auto
    Oil Capacity : 1.43 Qt
    Carburetion : 22 mm Keihin
    Starting system : Recoil Starter
    Fuel capacity : 2.3 Gal , 0.4 Gal res.
    Wheelbase : 45.7 in.
    Overall Length : 71.7 in.
    Overall Width : 42.5 in.
    Ground Clearance : 4.9 in.
    Seat Height : 25.6 in.
    Front Tires : 25 x 12 x 9
    Rear Tires : 25 x 12 x 9
    Front Suspension : none
    Rear Suspension : none
    Front Brake : lever + cable operated drum
    Rear Brake : pedal operated Drum
    Final Drive : chain
    Dry Weight : 302 lbs
    MSRP : $1,248.00





    General ATC185S Specifications
    Production Years : 1981-1983
    Engine type : 4 Stroke, Air cooled
    Displacement : 180.2cc
    Bore x Stroke : 63 x 57.8 mm
    Compression ratio : 8.0 to 1
    Compression : 142 - 170 psi
    Transmission : 5 speed
    Clutch Type : Semi-auto
    Oil Capacity : 1.43 Qt
    Carburetion : 22 mm Keihin
    Starting system : Recoil Starter
    Fuel capacity : 2.3 Gal , 0.4 Gal res.
    Wheelbase : 44.1 in.
    Overall Length : 71.7 in.
    Overall Width : 42.5 in.
    Ground Clearance : 4.7 in.
    Seat Height : 26.2 in.
    Front Tires : 22 x 11 x 8
    Rear Tires : 22 x 11 x 8
    Front Suspension : none
    Rear Suspension : none
    Front Brake : lever + cable operated drum
    Rear Brake : pedal operated Drum
    Final Drive : chain
    Dry Weight : 270.1 lbs
    MSRP : $1,148.000

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    Comments

    1. jasper's Avatar

      jasper said:
      I am having problem with my 185s I installed a new carbuerator and now gas leaking from aircleaner I know little about motorcyles and could use some help
      [Reply]
    2. Naz's Avatar

      Naz said:
      Maybe your float is stuck?


      Naz
      [Reply]
    3. 1982 honda 185s's Avatar

      1982 honda 185s said:
      iam having trouble with getting spark on my 1982 185s honda.
      [Reply]
    4. 1982 honda 185s's Avatar

      1982 honda 185s said:
      i have already tested my coil for my spark plug and that reads fine .
      [Reply]
    5. 1982 honda 185s's Avatar

      1982 honda 185s said:
      i was thinking maybe it was my cdi box or the cdi pulse generator
      [Reply]
    6. 1982 honda 185s's Avatar

      1982 honda 185s said:
      how do i test my cdi box or the cdi pulse generator or the stator
      [Reply]
    7. goump1995's Avatar

      goump1995 said:
      ..................
      [Reply]
    8. goump1995's Avatar

      goump1995 said:
      Quote Originally Posted by 1982 honda 185s View Post
      how do i test my cdi box or the cdi pulse generator or the stator
      You can never tell when you CDI box is good or bad but, The way you test out your coils will require a flywheel puller tool on models with the coils inside the magneto.
      Once you have gotten to your coil pack you will need an Ohm Meter to test if weather they a good or bad.As for the Pulser , That is magnetically powered and hardly ever gets bad.
      What is exactly wrong with your engine?
      [Reply]
    9. the ATC kid's Avatar

      the ATC kid said:
      i picked up an 83 atc 185, the one with front suspension and its one of the most fun utility atv's ive riden. but my puller keeps breaking, and it never wants to go back in.
      [Reply]
    10. the ATC kid's Avatar

      the ATC kid said:
      HELP! how do you get the cam chain off?
      [Reply]
    11. wheelz420's Avatar

      wheelz420 said:
      i need help bad ,my fiencee just got me a 1983 honda 185s for my birth day on the 2nd ,everythings in great condition the guy really took care of it, the thing is that he got really sick and couldnt finish puttin it back together ,so i have to ,i know nothing of mechanics and dont have a credit card to purchase the repair manual online, any chance theres a pdf i can barrow? this things gonna b sweet ,it even has the original emergency toolkit!! thankx for readin
      [Reply]
    12. wheelz420's Avatar

      wheelz420 said:
      should mention he took it apart to paint it, it looks bran new!!
      [Reply]
    13. needa250r's Avatar

      needa250r said:
      Quote Originally Posted by 1982 honda 185s View Post
      iam having trouble with getting spark on my 1982 185s honda.
      try cutting about a quarter inch of the coil wire.
      [Reply]
    14. wheelz420's Avatar

      wheelz420 said:
      well its just about 100% complete other then the seat it was a fun build.check out the build of my 185s.http://www.3wheelerworld.com/showthr...t-finished-it.
      [Reply]
    15. HondaTheOnlyWay's Avatar

      HondaTheOnlyWay said:
      I have a 1982 185s and there is oil leaking from the cdi cover..any ideas why?
      [Reply]
    16. Chris Holden's Avatar

      Chris Holden said:
      I have an 83 185s, and need to replace the front and rear sprockets, does anybody have a step by step guide to do that? I'm new to the three wheeler world and need as much help as I can get with it.
      [Reply]
    17. 8thk4u's Avatar

      8thk4u said:
      I also have a 185 3 wheeler and there is oil leaking from around the cdi cover.. What is causing this?
      [Reply]
    18. 8thk4u's Avatar

      8thk4u said:
      I have an 85 250 r, I bought it sec. hand and it's been totally restored and a bigger carb and all new reids.. It was idling fine when I got it, not it doesn't want to stay idling. Could the gas mixture be too rich? It does smoke more than it should I think, but didn't do that wn I first got it. I haven't ridden it but a lil. I think that I may have mixed the fuel too rich in fear of mixing it too lean....
      [Reply]
    19. 84185s's Avatar

      84185s said:
      I have a 83 185 and it has front suspension yet it says above that it doesn't come with it Iwas told it was a 84 but when iI typed my vin in it said 83 bit couldn't show make etc how do I figure out what model I have as I need some parts like the recoil and the front sprocket is missing the c clip and a bolt which I believe is why my chain jumps. Any ideas
      [Reply]
    20. romo185's Avatar

      romo185 said:
      I have an atc 185 and im having the problem that wen i accelarate from 0 to 100 right away it will just wanna cut out and if u hold it there itll just die
      [Reply]