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Flat slide vs. Round slide carb???

This is a discussion on Flat slide vs. Round slide carb??? within the CRF50 forums, part of the General Talk category; I have a couple different 24mm carbs that I am looking at purchasing. I know some of the newer big bikes run flat slide carbs. ...

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    Flat slide vs. Round slide carb???

    I have a couple different 24mm carbs that I am looking at purchasing. I know some of the newer big bikes run flat slide carbs. What are some of the biggest advantages or disadvantages of a flat slide carb vs. round slide?
    2004 SDG 124cc GPX engine, I-shock, Tappet breather, Kitaco Inner Rotor kit, Oil Cooler, 24mm carb, Uni 2 stage filter, Ported intake, Yoshimura TRS pipe, One industries graphics, ASV clutch lever, Red Baron mount w Two Bros pegs, 12" wheels. Special thanks to Vince at TBolt USA!


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    flat slides are usually harder to tune, but make more power when tuned right.



    Thats all i really know lol.

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    I always wonder why people say they are harder to tune! LAZIES!

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    Yeah, I don't mind spending some time tuning the thing. I am just curious if one offers better perfomance than the other.
    2004 SDG 124cc GPX engine, I-shock, Tappet breather, Kitaco Inner Rotor kit, Oil Cooler, 24mm carb, Uni 2 stage filter, Ported intake, Yoshimura TRS pipe, One industries graphics, ASV clutch lever, Red Baron mount w Two Bros pegs, 12" wheels. Special thanks to Vince at TBolt USA!

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    flatslide look cooler I actually dont know if there is a performance gain since the only time Ive converted to a flatslide I also went up in size, so I dont know what just going to a flatslide would do. but since basically all big bikes that are carbuerated use flatslides, there has to be a good reason.
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    "when in doubt, throttle out"

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    doesnt a flat slide give it more of a 2 stroke characteristics? and the round slide more liek a 4 stroke???



    the whole heart of the power band difference of the two????

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    Are there any 26mm flatslide carbs out there for the 50s?



    Like classic honda only sells a 24mm flatslide

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    http://www.sudco.com/mikuni3.html



    Mikuni has 24 and 28mm units, no 26's listed that I saw.
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    Why did they have to skip 26mm?




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    Dunno, looks like Kehin does the same thing.
    TTR --- Never Challenge an Engineer

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    Sponsored by: Moto Milano - TBolt USA - AHP Minis

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    cyclerider57
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    Flat slides are known to be higher performance because there is less area in the slide region of the carb. The air can get across the slide quicker allowing for increased air flow earlier.

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    thanks cr57.....



    i was taking a stab at it.......wasnt sure myself...

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    MINIGUNZ Sells a 26mm Flat Slide Carburetor that we have been testing with GREAT success!

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    flatsides will usually make more power at WOT but are a little trickier to get right at smaller throttle openings. A round slide will feel a bit smoother as far as power delivery goes but you will make more power with a flatside. If you're usually going full out and you're OK with a little jerkiness donw low (you might not even feel it) then go with the flatsides.



    that's what I found on all my streetbikes anyway...



    plus flatsides look way cooler and rattle at idle which sounds way cooler

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    yea thats pretty much what i was talking about with my first post.....



    but using a stroke power band compared to a 4 strokes........



    2 strokes power is at the top and the 4 strokes power is at low to mid....



    thats kinda how this is, right?



    2 stroke = flat slide

    4 stroke = round slide


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