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Let's liven up this forum... 2 STROKE!

  1. #651
    Soul Rider Paul_E_D's Avatar
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    Re: Let's liven up this forum... 2 STROKE!


    Quote Originally Posted by typeone View Post
    are you talking about "Screw-U" aka "The Wall" with the massive climb around the ~2:30 mark? that shit is intense just walking it, eats 450 power ... last year it was so muddy they blocked it off completely from the racecourse. you could ski that shit, we watched a guy yard sale down but SAVED HIS BEER
    I was referring to the direction of this thread (Bees and their concept of time??!!)\, but that turn sounds like fun too.

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  2. #652
    Lifer loudbeard's Avatar
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    Re: Let's liven up this forum... 2 STROKE!

    Quote Originally Posted by Paul_E_D View Post
    I was referring to the direction of this thread (Bees and their concept of time??!!)\, but that turn sounds like fun too.
    It was a perfectly reasonable point to make.

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    I went to MMI I know what Im doing here chief

  3. #653

    Re: Let's liven up this forum... 2 STROKE!

    haha, I thought it was the thread direction too...also went back to watch the turn in the video and still got wow'd

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  4. #654
    Awesomeness, Inc. MattR302's Avatar
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    Re: Let's liven up this forum... 2 STROKE!

    Found this, seems to be a decent deal?
    https://advrider.com/f/threads/2011-...shire.1404983/

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  5. #655
    Soul Rider Paul_E_D's Avatar
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    Re: Let's liven up this forum... 2 STROKE!

    Seems pricey, but a very nicely turned out bike. Could be worth it if you want that particular setup. Would cost more to recreate.

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  6. #656
    Lifer Kurlon's Avatar
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    Re: Let's liven up this forum... 2 STROKE!

    Offer $3000?

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  7. #657
    Burns retinas nhbubba's Avatar
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    Re: Let's liven up this forum... 2 STROKE!

    Sweet motorbike. I agree w/ the price. Although clean-ness and the choice add-ons may make it worth it.

    Wasn't there a new frame in '12? Maybe hurt the value a bit?
    He says 1-year only because it is 6-speed, PDS and a close ratio XC? Was that not a normal combo any other year?
    FWIW my 200 is a XC-W converted to XC.. so also PDS, also 6-speed, also XC and I love the damned thing!

    Just increasing my post count. Feel free to ignore me.

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  8. #658
    Lifer nt650hawk's Avatar
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    Re: Let's liven up this forum... 2 STROKE!

    https://2strokebrands.com/products/2...continental-us

    might as well put this up here and the chainsaw thread.


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  9. #659
    Awesomeness, Inc. MattR302's Avatar
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    Re: Let's liven up this forum... 2 STROKE!

    Took my new-to-me KDX220 out today for my first ever dirt ride. Went surprisingly well, no crashes, only a couple tip-overs.
    Previous owner didn't own it long, but he said he ran 32:1, so that's what I ran. Seemed to run great, lots of power, lots of smoke.
    Sure wouldn't mind a magic button though.

    Total noob to 2-strokes here.
    Is there any harm in me switching to 40:1 or maybe 36:1? I've read other KDX riders run 40:1 or even 50:1.
    If it's jetted for 32:1, would changing it affect anything? Does ratio even make a difference for jetting?
    With trials around here being very technical and me being super slow, would a lighter oil ratio reduce the risk of fouling a plug?

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  10. #660
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    Re: Let's liven up this forum... 2 STROKE!


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  11. #661

    Re: Let's liven up this forum... 2 STROKE!

    who the F knows



    get a lectron!

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  12. #662
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    Re: Let's liven up this forum... 2 STROKE!

    Going from 32:1 to say, 40:1 is going to effectively richen the jetting. If you're running good oil, not Wally World discount weed eater premix and desert topping, I don't see a big risk other than possibly fouling a plug from the additional fuel, maybe.

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  13. #663
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    Re: Let's liven up this forum... 2 STROKE!

    for reducing smoke, try the various smokeless oils and see if any offer improvement.

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  14. #664
    Don't bother me! R7's Avatar
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    Re: Let's liven up this forum... 2 STROKE!

    On my YZ250X, the manual says run it at 32:1, I ran yamalube synthetic at the recommended ratio for the first 5 gallons. It smoked like a pig, felt boggy, and I fouled 2 plugs. I switched to Motorex synthetic and went to 50:1 ratio and couldn’t believe the difference. Crisp throttle, very little smoke, little to no goop out the exhaust pipe, and no more fouled plugs.

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  15. #665
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    Re: Let's liven up this forum... 2 STROKE!

    I run Maxima synthetic oil @ 50:1 and jet by the book in my KTM 200 and am delighted at how it runs.
    I have never experienced a fouled plug. I always thought the plugs fouled from oil, not "additional fuel". But as I say, no experience there. I believe my toolkit has a plug in it per advice from when I put it together. But its never been used.

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  16. #666
    Lifer backinthesaddle's Avatar
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    Re: Let's liven up this forum... 2 STROKE!

    Always loved the MKIA column.

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  17. #667
    Lifer
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    Re: Let's liven up this forum... 2 STROKE!

    Interesting topic. I just mixed up some fuel for my '07 CR125 this weekend. I have a gallon of Blendzall Gold Label that I wanted to use up. The recommended ratio is *16 ounces* per gallon. That is 8:1.
    We will see how she runs...

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  18. #668
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    Re: Let's liven up this forum... 2 STROKE!

    So, after a lot of testing on 125GP racebikes, they found that power is best at a pretty high ratio of oil. I can't remember the exact number but I want to say it was like 15:1. I'm not smart enough to understand the reasons why. I always ran 30:1 in my GP bike as per Honda's guidelines, and 50:1 in my KTM as per their guidelines. Less oil=less smoke and generally cleaner running. If I still ran a 2T dirtbike, I'd run 50:1 with the least smoky oil I could find a la R7s suggestion.

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  19. #669
    Lifer Kurlon's Avatar
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    Re: Let's liven up this forum... 2 STROKE!

    More oil is basically liquid dynamic compression ratio booster / ring leak down remover. Those 125GP machines are single ring screamers having to run larger ring gaps and piston to bore clearances because of the RPMs and thermal loads they're putting on them. More oil helps seal'em up. Also, back when that test was done, premix oils were of a VERY different composition then they are now. I'd love to see the test repeated on a modern MXer or woods two stroke with a two ring piston setup and a power to weight ratio that isn't squeezed to GP levels with modern oils.

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  20. #670
    Senior Member jimmycapp's Avatar
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    Re: Let's liven up this forum... 2 STROKE!

    50:1 on my 2006 ktm 300. I think it calls for 40:1 up to 60:1. Runs great at 50. Haven't bothered experimenting. No sploog out the exhaust.

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  21. #671
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    Re: Let's liven up this forum... 2 STROKE!

    Quote Originally Posted by jimmycapp View Post
    No sploog out the exhaust.
    Just for clarity, splooge is a symptom of poor jetting, not oil ratio. 8:1, jetted correctly will not drool.

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  22. #672
    Lifer backinthesaddle's Avatar
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    Re: Let's liven up this forum... 2 STROKE!

    If you could have an rpm data logger on a 125GP bike and a 125MX bike I bet the GP bike would have more periods of sustained full throttle?? Never been on a 125GP bike but in MX you will have shorter straights (for the most part), varying rpm as the rear wheel leaves the ground for jumps or whoops, and rpm robbing sand or loamy soil(track depending). Could that cause the GP bike to run 15:1 vs an mx bike at 32:1, 40:1, etc? Also on the GP bike you have a finger on the clutch to save you if the engine seizes while on the MX/dirt bike you have a finger on the clutch to fan it and get the rpm backup. Basically saying the 2 engines are "run" differently and therefore the oil ratios are different. Of course I haven't touched on brand of oil, jetting for temp/altitude/oil, and the oils available then vs now. In the 80's many of us in the NE ran spectro in everything from 80's to 500 cc one bottle to 5 gal of gas. I think that's about 50:1.

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  23. #673
    Senior Member jimmycapp's Avatar
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    Re: Let's liven up this forum... 2 STROKE!

    Quote Originally Posted by Kurlon View Post
    Just for clarity, splooge is a symptom of poor jetting, not oil ratio. 8:1, jetted correctly will not drool.
    Didn’t know that. Thanks!

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  24. #674
    Your Father csmutty's Avatar
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    Re: Let's liven up this forum... 2 STROKE!

    Quote Originally Posted by backinthesaddle View Post
    If you could have an rpm data logger on a 125GP bike and a 125MX bike I bet the GP bike would have more periods of sustained full throttle?? Never been on a 125GP bike but in MX you will have shorter straights (for the most part), varying rpm as the rear wheel leaves the ground for jumps or whoops, and rpm robbing sand or loamy soil(track depending). Could that cause the GP bike to run 15:1 vs an mx bike at 32:1, 40:1, etc? Also on the GP bike you have a finger on the clutch to save you if the engine seizes while on the MX/dirt bike you have a finger on the clutch to fan it and get the rpm backup. Basically saying the 2 engines are "run" differently and therefore the oil ratios are different. Of course I haven't touched on brand of oil, jetting for temp/altitude/oil, and the oils available then vs now. In the 80's many of us in the NE ran spectro in everything from 80's to 500 cc one bottle to 5 gal of gas. I think that's about 50:1.
    Oils have also come a long way...

    Ignition temp of modern synthetics makes a big difference I would think?

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  25. #675
    Lifer
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    Re: Let's liven up this forum... 2 STROKE!

    Quote Originally Posted by Kurlon View Post
    Just for clarity, splooge is a symptom of poor jetting, not oil ratio. 8:1, jetted correctly will not drool.
    Interesting. I always assumed it was from excess oil in the mix, but my 2T knowledge is weak. So is it running rich, resulting in incomplete burn, and that's how the oil ends up accumulating?

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