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Thread: What effect does sprocket size have on top speed/acceleration?

  1. #1
    apriliaforum newb
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    What effect does sprocket size have on top speed/acceleration?

    I've got stock sprockets on my bike and am hitting 60mph in sixth at 11000rpm.

    Would a front sprocket with one less tooth give me more top end? If so , how much?

    Thanks

  2. #2
    apriliaforum expert Lee_367's Avatar
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    nope, you would lose top-end
    RVF400

  3. #3
    apriliaforum expert JonnyRS50's Avatar
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    Rear sprocket:

    More teeth= more accel, less top end

    Less teeth= more top end, less accel

    Front sprocket:

    More teeth= More top end, less accel

    Less teeth= More accel, less top end.
    1992 Yamaha TZR250 3XV
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  4. #4
    apriliaforum newb
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    So if I put a sprocket with 1 extra tooth on the front how much would I gain in top end? 5mph?

    Thanks

  5. #5
    Post Whore Craig's Avatar
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    1 tooth on the front is like 3 on the rear, 5mph may be abit too much but shouldnt far off.

    one up on front and 3 off rear should give abit better topend.
    VAG Cars - www.vagcars.co.uk - North East VAG Owners Club

  6. #6
    apriliaforum expert swifty_mcvay's Avatar
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    maybe this is stupid and im thinking bout it toaly wrong or it aint possible ( or maybe its even the norm) ..but what about more teeth on each then you get more accel and top end right?
    02'tetsuya rep, Mk sp 73.5cc alloy kit, 21mm dellorto carb, pod air filter, Mk Clutch, Jolly Moto 80cc pipe

  7. #7
    taking a breather... sanchezz's Avatar
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    k,, how about we forget we seen that post

  8. #8
    apriliaforum expert swifty_mcvay's Avatar
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    hey man i asked a simple question im just curious..coulda at least just said .. look you retard that cant be done..and told me why...least that woulda helped you just dismissing it shows that ur a complete w**k*r thnx
    02'tetsuya rep, Mk sp 73.5cc alloy kit, 21mm dellorto carb, pod air filter, Mk Clutch, Jolly Moto 80cc pipe

  9. #9
    apriliaforum Member girl_og's Avatar
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    okay best way to think of it,

    think about a mounting bike, canging gears on it it the best way to0 get a feel for it.
    Kevin

  10. #10
    apriliaforum expert rs--Rich--50's Avatar
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    i think its down to ratio's. if you make them both equally bigger then it will probably be the same, or slower (more weight). i think you allways sacrifice either top end or accel if you change the sizes. tough decision eh

  11. #11
    apriliaforum expert JonnyRS50's Avatar
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    woah check out the check out the check out the n00's lol
    1992 Yamaha TZR250 3XV
    2002 Suzuki DRZ400
    2000 Cagiva Mito Evo 2
    2000 Cagiva Roadster


    Parts currently in stock for RS125, Mito, RG125, CBR125, VFR400

    Need RS125 parts? Drop me a email sales@crotchrocketspares.com

    Aprilia Motorcycle Breakers 125cc Spares
    Piaggio Scooters
    My Bikepics

  12. #12
    apriliaforum Member Moon Child's Avatar
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    check AF1 online store it gives you top speeds at 12000rpm for different sprocket sizes front and rear.

    Better to in H3LL than fade away.......

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