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  1. #1
    Senior Member FirePowerMinis's Avatar
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    Trickin a Tec for Torque

    Latest recycling find. 139cc HSK845 ringy-dingy, for $6 including the A/V cart and some 1/2 coarse bolts for my van seat.
    I'm going to add a reed cage, some timing & compression, and trim the intake skirt for better filling, then see if it improves the curve.



    17190863_10211891971871543_3502149824626834333_n.jpg

    17191368_10211891971831542_5802892116414404577_n.jpg
    Last edited by FirePowerMinis; 03-06-2017 at 12:30 PM.

  2. #2
    Senior Member FirePowerMinis's Avatar
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    I've cut the reed cage area out of trashed sled jugs before, to use on non-reed bigger engines, but never a lil fella.

    If I can't fab some thing, I may just use:
    s-l1600 (1).jpg

  3. #3
    Junior Member BriggsBmx's Avatar
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    good scoop...
    I think you may have an answer for my 2 stroke ignition question
    thx
    Briggs


    Sent from my iPad using OldMiniBikes

  4. #4
    Senior Member red baron's Avatar
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    did you ever do anything with the motor?

  5. #5
    Senior Member FirePowerMinis's Avatar
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    Quote Originally Posted by red baron View Post
    did you ever do anything with the motor?
    Nah. I lost interest when I saw the connecting rod. It's still a viable project, but I have a couple each M-series and Duraforce Lawn Boys and an R-Tec ahead of it now.

  6. #6
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    Where would someone find a reed assembly like that?

  7. #7
    Senior Member FirePowerMinis's Avatar
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    Quote Originally Posted by wjustice View Post
    Where would someone find a reed assembly like that?
    https://www.ebay.com/itm/Motorized-B...ycle+reed.TRS0


    Of course, you'd want to add additional port timing, unless low end is all you're after.
    Holes, arched skirt, straight cut shortening the skirt, all work.
    The higher up holes help lube the wristpin bearing and cool the underside of the piston.
    And, if "4 corner holes" are done, it really reduces chances of seizing. Note used top piston.
    s-l1600.jpg
    s-l1600.jpg
    post-279355-0-48516900-1379527613.jpg
    Last edited by FirePowerMinis; 08-06-2018 at 09:02 PM.

  8. #8
    Senior Member
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    Well a little bit different then that. I have a Kohler 340ax and a ccw 290 both non-reed snowmobile engines. I've seen carb-reverb on both at times and needs would correct this.

    Sent from my Pixel 2 XL using Tapatalk

  9. #9
    Senior Member FirePowerMinis's Avatar
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    Quote Originally Posted by wjustice View Post
    Well a little bit different then that. I have a Kohler 340ax and a ccw 290 both non-reed snowmobile engines. I've seen carb-reverb on both at times and needs would correct this.

    Sent from my Pixel 2 XL using Tapatalk
    Aaaah, bigger pickle to fry. I have a 440-2AS myself, and have been looking at options.
    I've liberated the cages, boots, and reed area of a bunch of old Yamaha sled jugs. They're not too bad to mod.
    Husky offroad bikes from the 70s-80s had a bolt-on affair that can be eBay'ed, cheap.

    https://scontent.fdet1-1.fna.fbcdn.n...11&oe=5C0554AB


    https://scontent.fdet1-1.fna.fbcdn.n...4e&oe=5BCD7919
    Last edited by FirePowerMinis; 08-06-2018 at 11:04 PM.

 

 

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