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Thread: sprocket

  1. #1
    apriliaforum expert dellenty69's Avatar
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    sprocket

    i want acceleration, so i have looked on the forum and seen some diff combonations.

    i like the sound of 14/39 14/40

    will this put to much strain on the engine? and i dont care if my bike tops out at 85

    and who sells these ratios?

    cheers james

    The Hammer - Officialy The Tool Of The Pikey!
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  2. #2
    apriliaforum expert the-heft's Avatar
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    14 is too low imo.....16/40 is great for acceleration. Nothing can up from the lights.
    2006 RS125

    Done:
    Full Power, CDI Mod, Ramair Performance Filter, Jolly Moto Pipe, 34mm Carb, Polished Exhaust Hanger, 16/40 Gearing, V-Force 3 Reeds, Dark Tint Double Bubble Screen.

    To Come:
    L.E.D Rear Light, Tail Tidy.

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  3. #3
    apriliaforum expert the-heft's Avatar
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    Plus if you drop it too low you will actually loose acceleration because of all the gear shifts and how quickly the engine revs out.
    2006 RS125

    Done:
    Full Power, CDI Mod, Ramair Performance Filter, Jolly Moto Pipe, 34mm Carb, Polished Exhaust Hanger, 16/40 Gearing, V-Force 3 Reeds, Dark Tint Double Bubble Screen.

    To Come:
    L.E.D Rear Light, Tail Tidy.

    Has for sale:
    Standard Reedcage, Standard Expansion Chamber, Standard Airbox.

  4. #4
    apriliaforum newb
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    Whats best for a decent top end and not losing much acceleration? I think I have 17/39 on at the moment and get tad over 100 top end.

    Is 17 standard by the way? (I've actually not checked since I've had my new bike as it's almost brand new).

    Thanks, Danny

  5. #5
    apriliaforum expert the-heft's Avatar
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    17/40 is standard rs gearing.
    2006 RS125

    Done:
    Full Power, CDI Mod, Ramair Performance Filter, Jolly Moto Pipe, 34mm Carb, Polished Exhaust Hanger, 16/40 Gearing, V-Force 3 Reeds, Dark Tint Double Bubble Screen.

    To Come:
    L.E.D Rear Light, Tail Tidy.

    Has for sale:
    Standard Reedcage, Standard Expansion Chamber, Standard Airbox.

  6. #6
    apriliaforum newb
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    Ahh thanks, Well I've just double checked and I have renthal sprocket on back, which is 39T, and I'm pretty sure front hasnt been modified.

  7. #7
    apriliaforum expert V6jules's Avatar
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    16/40 will give you about 90 top end before going into the red and it accelerates like a bat out of hell and mine can lift the front (has a 34mm carb)

    im going back to 17/40 for long journeys though as it uses less fuel and puts less strain on the engine

    one tooth on the front makes a serious difference, 2-3 teeth on the back make about the same difference
    Modifications; 34mm carb, Foam filter, Carbon reeds, 16-40 Renthal sprockets and Gold O-ring chain, Dominator twin Headlight, Mini alloy indicators, Single seat alloy tail fairing, Shotgun rear lights, Wavey disc, Arrow exhaust (got JL but its wank so took it off) Polished stainless bolts everywhere

  8. #8
    apriliaforum expert trist's Avatar
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    Quote Originally Posted by dellenty69
    i want acceleration, so i have looked on the forum and seen some diff combonations.

    i like the sound of 14/39 14/40

    will this put to much strain on the engine? and i dont care if my bike tops out at 85

    and who sells these ratios?

    cheers james
    Go 16/40 mate.

    2007 Aprilia RS50 || 1999 GSXR 600

  9. #9
    apriliaforum expert the-heft's Avatar
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    What Trist says is good advice.

    16/40 is gooooood.

    Although how Trist can really comment as he doesnt own a 125 I dont know
    2006 RS125

    Done:
    Full Power, CDI Mod, Ramair Performance Filter, Jolly Moto Pipe, 34mm Carb, Polished Exhaust Hanger, 16/40 Gearing, V-Force 3 Reeds, Dark Tint Double Bubble Screen.

    To Come:
    L.E.D Rear Light, Tail Tidy.

    Has for sale:
    Standard Reedcage, Standard Expansion Chamber, Standard Airbox.

  10. #10
    apriliaforum expert trist's Avatar
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    I'm not on a strict permit to talk Bullshit all the time you know lol.

    2007 Aprilia RS50 || 1999 GSXR 600

  11. #11
    apriliaforum expert dellenty69's Avatar
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    i have 16/40 i want better acceleation tho lol
    iv read about people having 14/15 front and they said it toped out at 80 but the acceleration was rappid

    The Hammer - Officialy The Tool Of The Pikey!
    jolly moto, with pollished ally end can!
    standard air box back on. (runs better)
    15 tooth front JT sprocket
    40 tooth PBR rear sprocket (polished)
    xenon HID H1 100watt 5000k bulb
    xenon HID H3 130watt 6000k bulb
    LED White Wedge Inverted Side Light
    peugeot 307 LED flush side repeaters
    bright white halo rings in headlight.
    paint renovation coming up.


    Quote Originally Posted by Cheeseweasel View Post
    Im not judging you, Im telling you your a fucking idiot.

  12. #12
    apriliaforum expert trist's Avatar
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    Quote Originally Posted by dellenty69
    i have 16/40 i want better acceleation tho lol
    iv read about people having 14/15 front and they said it toped out at 80 but the acceleration was rappid
    16/39 then lol

    nah, totally up to what you want to do. 15/ 38?

    2007 Aprilia RS50 || 1999 GSXR 600

  13. #13
    apriliaforum expert samRS's Avatar
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    Quote Originally Posted by trist
    16/39 then lol

    nah, totally up to what you want to do. 15/ 38?
    16/39 would accel worse than 16/40

    lower tooth on rear = more top speed

    iirc

    My Rides:
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  14. #14
    apriliaforum expert trist's Avatar
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    Quote Originally Posted by samRS
    16/39 would accel worse than 16/40

    lower tooth on rear = more top speed

    iirc
    Shit yeah, correction, i knew that fooking hell

    2007 Aprilia RS50 || 1999 GSXR 600

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