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Thread: `85 T3 15/38 gearing and seat questions

  1. #1
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    `85 T3 15/38 gearing and seat questions

    So I am gonna be running 18 inch tires and want to keep my top speed, maybe gain some. I know a 15 tooth front will give a high top speed but would adding a 38 tooth rear give me back low-end grunt? Or would I lose my top speed because of the 18's already making the gearing low?

    My seat is missing the latch and just held on with some bolts and a makeshift poorly welded bracket. Question is where do I find an aftermarket blue seatcover for when I take the crap off and put all new brackets back?


    Thanks
    My Feedback 85 TECATE 500 08 Honda 450R

  2. #2
    Join Date
    May 2002
    Location
    Texas
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    I don't know if Ceet still has any blue covers or not. I think they still do. If not there's Hi-Flite and Travelcade. My 84 had a travelcade blue cover. It wasn't bad at all.

    In my opinion, 84/85 KXTs pretty much have non-existant low-end grunt. 18" tires help to increase it some. To get some top speed back, you could leave the 13 tooth up front and just drop to the 38 tooth rear, or switch to the 15 front and leave the 42 rear. 15/38 will gear it too high in my opinion and it wouldn't be good for anything but wide open riding.

    Best thing to do is just pick up a 15 cs & 38 rear sprocket and see what combination you like best.
    1986 Tecate
    1984 Tecate
    1985 Tri-Z
    1986 ATC350X
    1985 ATC250R (2)
    1985 ATC125M (2)
    1982 ATC70 - Original Owner

    175 TriMoto Frame with Pro-Tec Rear Suspension

    3-Wheelin' since '82

  3. #3
    Join Date
    Nov 2003
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    Newfoundland
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    Thanks Jeb, the Ceet site is under construction but the others are good. As for the sprockets I'll just pick up the 14 and 15 cs and a stock 42 rear to see what works best.
    My Feedback 85 TECATE 500 08 Honda 450R

  4. #4
    ange's Avatar
    ange is offline At The Back Of The Pack Arm chair racerFirst time rider
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    Apr 2003
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    utah
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    I'm running (or tried to run...) a 38 w/ the stock sprocket up front on my T3...

    There is NO low end.... There is no chance in hell that the front wheel will EVER come off the ground...

    I also am running 18's on the rear... W/ this gearing it is fast once you get going. I run along a dirt road next to a 65mph highway and I easily keep up w/ cars and slowly pass them.

    I'm switching back to the 42 stocker so it is "quicker" rather than all out speed. I like to beable to blip the throttle and zip around.
    KXT 250 A1/A2

  5. #5
    Join Date
    Nov 2003
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    Newfoundland
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    Ok so a 15 tooth cs sprocket would be comparable to running a 38 rear? No grunt at all so first would feel like you were starting off in too high a gear?
    My Feedback 85 TECATE 500 08 Honda 450R

  6. #6
    Join Date
    Jul 2003
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    936
    im running 15-42 with 18's and it was geared pretty good, but i got new 20's so it seems a little too tall, i think i might end up dropping my cs sprocket one tooth...
    Wanna race? ;-)
    85' Tecate (still looking for entire front brake asembly...)
    bonanza mini-bike
    if you cant ride with the big boys...put it back on the trailer

  7. #7
    HypnotizeMindz's Avatar
    HypnotizeMindz is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    Miami, Fl
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    tecate

    hate to break up your thread.. but where'd u get your sprockets ?
    «°¤.::JaKe::.¤°»

  8. #8
    Join Date
    Nov 2003
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    Newfoundland
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    try www.denniskirk.com and do a search for part through vechicle make/model.
    My Feedback 85 TECATE 500 08 Honda 450R

  9. #9
    Join Date
    Oct 2002
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    cedar falls, IA
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    I am not sure if how stock your tecate is but I am running 13/38 gears with 22' turf tamers and I still have gobs of power with the wheel still coming off the ground relatively easy (mines alittle modified though). with 18" tires I think you would be closest to stock with the 15 cs which should put you around 65mph, and still leave you with some low end. As to your first post aking if a 38 will give you lowend grunt, the result will be the opposite, taking away low end and giving you more top end.
    The problem with America is stupidity. I'm not saying there should be a capital punishment for stupidity, but why don't we just take the safety labels off of everything and let the problem solve itself?
    85 atc350x ('05 christmas present to myself)
    84 tecate (my baby)
    84 honda 110 (lil buddy)
    81 honda 70 (daughters ride)
    86 lt250r (sold for parts) R.I.P.

  10. #10
    Join Date
    Nov 2003
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    Newfoundland
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    So with your 22's and stock front sprocket and 38 rear you would have a top speed higher than a stock geared T3. What mods do you have besides a new filter, DG pipe and jetting to be able to still lift the front easily with an extended swingarm?
    My Feedback 85 TECATE 500 08 Honda 450R

  11. #11
    Join Date
    Oct 2002
    Location
    cedar falls, IA
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    546
    besides what you have listed:
    38mm mikuni tmx
    kx cylinder
    milled head
    vforce reed block
    The problem with America is stupidity. I'm not saying there should be a capital punishment for stupidity, but why don't we just take the safety labels off of everything and let the problem solve itself?
    85 atc350x ('05 christmas present to myself)
    84 tecate (my baby)
    84 honda 110 (lil buddy)
    81 honda 70 (daughters ride)
    86 lt250r (sold for parts) R.I.P.

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