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Thread: What RPM's does your scooters back tire start to spin at?

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    apriliaforum prov-nov scooterboy32's Avatar
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    Question What RPM's does your scooters back tire start to spin at?

    stupid question but i have a 2007 morni Ditech and when i slowly rev it up to 3000 rpms on the stand just the engine revs but at 4000 the wheel starts to spin is this normal for a de restricted scoot? i just thought that the wheel should spin at lower Rpms not all the way at 4000..
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    apriliaforum expert Cool77's Avatar
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    I don't remember exactly when I was stock but 4000 is not abnormal.
    Aprilia SR Factory 50 2006 IE Morini Engine type

    13 500KM

    MAX Speed after rod in 92KM/H flat no wind, 104 KM/H tuck

    Malossi BBK + Full Circle Crank since 10 287KM

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    apriliaforum prov-nov scooterboy32's Avatar
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    alright and another question when i hold the starter button down whats the ring/bell sound i hear?
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    apriliaforum expert Cool77's Avatar
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    Hard to tell, post a video with sound and might help to understand. Cheers Cool77
    Aprilia SR Factory 50 2006 IE Morini Engine type

    13 500KM

    MAX Speed after rod in 92KM/H flat no wind, 104 KM/H tuck

    Malossi BBK + Full Circle Crank since 10 287KM

    Stock Gears

    ECU : Malossi

    Mod : Leo Vince ZX-R Pipe flat black ceramic coated - HGT regulator Gen III - Malossi multivar 2000 - 9.0gr Dr. Pulley rollers - Malossi delta clutch small white spring big white spring w/o tc - Malossi belt - Malossi red foam air filter - ZMR7AP plug - Water trap - Malossi Reed valve VL-12 - Buzzetti side stand - YSS Rear shock.

  5. #5
    apriliaforum expert Rosscofat's Avatar
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    it is more then likely your starter gear engaging with the big starter gear (forgot the name of it) But that could also mean it is loose. a Video of the sound would be good.

  6. #6
    apriliaforum Member
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    My rear tire sometimes spins at idle (2000 RPM) slowly. This doesn't happen always - is it normal?
    2010 SR50 R Factory - Piaggio Purejet

    ECU Derestricted (2.8.0) / LeoVince ZX-R / Water Trap / NGK ZMR7AP (.035") / +3° Woodruff Key
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    Stage6 Wing Cooler Clutch Bell / Malossi Red Sponge Filter

    Michelin Pilot Sport SC 130/60-13 (front and rear) / Buzzetti Sidestand / Polished Variator Cover
    Lennes SR50 Aluminium Foot Plates & Radiator Grille / Kiesler Underseat / Stage6 Mirror

  7. #7
    apriliaforum prov-nov scooterboy32's Avatar
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    Quote Originally Posted by Rosscofat View Post
    it is more then likely your starter gear engaging with the big starter gear (forgot the name of it) But that could also mean it is loose. a Video of the sound would be good.

    Oh i thought every sr made that sound il try to get a vid up later but il give you more info..so i press the efi button after thats done i hold the left brake in and while holding that down i click the starter button its starts fine..But i once pressed in the left brake and clicked the starter while it was already running and it made the bell/ring sound its stupid that i did this because it was running already..So if your sr is running and when u pressed that you never heard the ring sound?
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  8. #8
    Moderator (ADSUM) Grenadiers's Avatar
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    It doesn't matter which break lever you use (unless one of your break switches is pooched). If the bike is running and you hit the starter, the pinging sound you hear is the starter gear attempting to engage the main gear...

    Anger is an ugly Mistress…
    06 SR50 (Morini)/AIRSAL 70CC BBK/NGK BR9EIX/My Top Speed-117KPH (GPS)!!
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  9. #9
    apriliaforum Junkie
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    My bike makes that bell sound, it prevents the starter gear ( bendix) from engaging with the cog on the crank and let them destroy eathother
    Stock Aprilia Ditech 03 model(Morini)
    Derestricted variator
    6,6g rollers
    molossi powerfilter
    NGK ZMR7AP

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