Il disco graduato (o goniometro) è uno strumento indispensabile per chi vuole regolare la fasatura dell'accensione o verificare i tempi di travaso e scarico di un motore Vespa. Risorse PDF da Stampare
Puoi scaricare e stampare un disco graduato di alta qualità dai seguenti link:
PDF Disco Graduato Standard: Questo file include anche una comoda tabella dei valori di anticipo (BTDC) per i principali modelli Vespa come PX, Primavera e Rally.
File Google Drive (Alternativo): Un'altra opzione pronta per la stampa. Come Prepararlo
Stampa: Assicurati di impostare la scala di stampa al 100% (non "adatta alla pagina") per mantenere la precisione dei gradi.
Rinforzo: Incolla il foglio stampato su un cartoncino rigido o su un vecchio CD/DVD.
Foro centrale: Pratica un foro preciso al centro per poterlo fissare saldamente all'asse dell'albero motore o al volano. Parametri di Riferimento (Anticipo BTDC)
Ecco alcuni valori comuni per la regolazione dell'accensione: Vespa 50 / 90: 19° Vespa Primavera (VMA2): 24° Vespa PX 125/150: 21°
Vespa PX 200 (PE): 23° (A) o 18° (IT) a seconda del modello. Vespa Rally 180 / Sprint: 22° Procedura in Breve
Trova il Punto Morto Superiore (PMS) usando un bloccapistone.
Fissa il disco e azzera lo 0° in corrispondenza di un riferimento fisso (come un filo di ferro sagomato fissato al carter).
Ruota il volano in senso antiorario fino a raggiungere il grado di anticipo desiderato per verificare lo scoccare della scintilla.
Hai bisogno di una guida specifica su come trovare il Punto Morto Superiore con il bloccapistone? DISCO graduato.pdf
disco graduato (degree wheel) is a specialized tool used by Vespa enthusiasts to precisely adjust ignition timing (anticipo) and measure engine port timing (fasature). It is essential for optimizing performance, especially on tuned or classic two-stroke engines. Borrozzinomoto.com Printable Resources
You can find and download a printable "disco graduato" through the following sources: Direct PDF Download printable graduated disc PDF
includes reference values for various models like the Vespa 50, Primavera, and P125X. 3D Design Files : For a more durable physical tool, creators on MakerWorld
offer free files to 3D print your own disc tailored for Vespa M12x1.25 threads. s750474d8371b5690.jimcontent.com Why You Need One
The disc allows you to read the exact degrees of opening for the exhaust and intake ports. Using it ensures: Borrozzinomoto.com Ignition Accuracy : You can set the spark to occur at the exact degree Before Top Dead Center (BTDC) disco graduato vespa da stampare pdf
required for your specific model (e.g., 19° for a Vespa 50 or 24° for a Primavera). Engine Tuning
: It is indispensable for verifying the port timing after modifications like installing a new cylinder kit or crankshaft. s750474d8371b5690.jimcontent.com How to Use a Graduated Disc DISCO graduato.pdf
A "disco graduato" (degree wheel) is an essential tool for setting the ignition timing and measuring port durations on Vespa engines. You can download a printable version and follow these steps to use it correctly. Printable PDF Sources
High-quality, printable timing discs are available from reputable scooter enthusiast and parts sites:
Scooter Help Degree Disk: A standard, widely used PDF for all Vespa and Lambretta models.
Vespa Club Mugello Guide: A technical guide that includes a printable disc and instructions in Italian.
Jimcontent Hosting: Direct link to a "Disco graduato" PDF specifically for vintage Vespa models. Essential Timing Settings (BTDC)
Ignition timing is measured in degrees Before Top Dead Center (BTDC). Common factory settings include: Vespa 50/90 : 19° BTDC Vespa Primavera (VMA2) : 24° BTDC Vespa PX 125/150: 21° - 22° BTDC Vespa Rally 180 : 22° BTDC Vespa 180 SS : 26° BTDC How to Use the Degree Wheel
To accurately set your timing, you must first find the Top Dead Center (TDC), which is the highest point of the piston's travel. DISCO graduato.pdf
You can download and print high-quality timing discs from these recognized community resources:
Scooter Help Timing Disc: A classic, clear template widely used by enthusiasts.
Vespa Club Mugello Guide: Includes a printable disc and a full Italian step-by-step guide.
Jimcontent Timing Disc: A simple, direct PDF for quick printing.
MakerWorld 3D Template: For those who prefer a 3D-printed physical tool over a paper one. 🛠️ How to Use the Degree Wheel To set your Vespa's timing, follow this standard procedure:
Modern Vespa : Degree wheel and the million formulas to get TDC
Messa in fase, anticipo accensione e ottimizzazione delle luci del cilindro: se sei un appassionato di elaborazioni Vespa, sai che la precisione è tutto. Per chi preferisce il fai-da-te senza spendere una fortuna in strumenti digitali, il disco graduato da stampare è il compagno ideale. 🛠️ Scarica il Tuo Disco Graduato (PDF Gratuiti) Ecco i migliori template pronti per il download: Scooterhelp Timing Disc
: Un classico assoluto per Vespa, include anche una comoda tabella dei gradi di anticipo per i modelli principali (PX, Primavera, 50 Special, ecc.). Template Personalizzabile - Blocklayer Il disco graduato (o goniometro) è uno strumento
: Se hai bisogno di dimensioni specifiche, questo tool ti permette di creare un goniometro su misura da incollare magari su un vecchio CD per renderlo più rigido. Goniometro Universale - TeXample
: Pulito, ad alta risoluzione e perfetto per una stampa A4 senza distorsioni. 🏁 Guida Rapida: Come Usarlo sulla Tua Vespa Non basta stampare; bisogna sapere come trovare il Punto Morto Superiore (PMS) per tarare lo strumento correttamente. Disco graduato vespa da stampare pdf Rating
Finding a reliable disco graduato (timing degree wheel) is a rite of passage for any Vespa enthusiast looking to tune their engine, set ignition timing, or check port timings.
Here is a detailed guide on how to find, print, and use a timing wheel for your project. Disco Graduato Vespa: The Ultimate DIY Guide
Whether you are running a classic PX, a smallframe Special, or a tuned PK, precision is everything. Setting your ignition timing (anticipo) correctly can be the difference between a smooth-running machine and a hole in your piston. 1. Why You Need a Degree Wheel
Most Vespa stator plates have alignment marks, but they are notoriously inaccurate—especially if you’ve swapped to an aftermarket ignition like Vespatronic or Pinasco. A 360° degree wheel allows you to: Find Top Dead Centre (TDC) with mathematical precision. Measure exactly where your spark fires. Calculate cylinder port timings (Transfer and Exhaust). 2. Where to Download the PDF
You don't need to buy a metal one. A paper version glued to a stiff piece of cardboard or a scrap piece of sheet metal works perfectly. Recommended Downloads:
SIP Scootershop: Often provides free printable templates in their tech manuals.
Vespa Resources / VR Forum: Search for "Disco Graduato PDF" in the "Download" sections of major Italian Vespa forums.
DIY Option: Any standard 360-degree protractor image works, provided it is high-resolution. 3. How to Print for Accuracy
The most common mistake is printing the wheel at the wrong scale. Open your PDF.
In the print settings, select "Actual Size" or "Scale: 100%".
Do not select "Fit to page," as this will distort the measurements. Print on Cardstock (200gsm+) if possible. 4. Setting It Up on Your Vespa Once printed and cut out, follow these steps:
Mounting: Use the flywheel nut to secure the disc to the flywheel. Alternatively, many mechanics use a magnetic base or a simple bolt through the center of the disc into the crankshaft.
The Pointer: Create a "pointer" using a stiff piece of wire (like a coat hanger) attached to one of the engine case bolts. Point it directly at the outer edge of your disc.
Find TDC: Use a piston stopper tool. Turn the flywheel clockwise until it hits the stop—note the degree. Turn it counter-clockwise until it hits the stop—note that degree. The exact midpoint between these two numbers is your True Top Dead Centre (0°). 5. Pro Tips for Success
Laminate it: A single drop of oil or petrol will ruin a paper disc. Apply clear packing tape over the face before cutting it out to make it "workshop-proof." Materiali occorrenti:
Check the Diameter: Ensure the disc is large enough to be read easily (at least 15cm–20cm) but small enough that it doesn't hit the floor or the frame while the engine is in the chassis.
Per la messa in fase della tua Vespa, puoi scaricare e stampare il PDF del disco graduato Jimcontent o utilizzare la versione fornita da Scooterhelp
. Questi strumenti sono essenziali per regolare l'anticipo dell'accensione e verificare le fasi del cilindro. Tabella dei Valori di Anticipo (BTDC)
Ogni modello di Vespa richiede un'impostazione specifica dell'anticipo (gradi prima del punto morto superiore, o BTDC): Modello Vespa Gradi Anticipo (BTDC) Vespa 50S / V90 / PK50 / PK125 Vespa P125X / P150X Vespa 150 Sprint / Veloce / Super Vespa Rally 180 / 200 (A) 22° / 23° Vespa GS150 (VS1-5) Vespa T5 125 Come Utilizzare il Disco Graduato DISCO graduato.pdf
disco graduato (degree wheel) is a critical tool for vintage Vespa maintenance, specifically for accurately setting the ignition timing and measuring port timings. You can download and print a standardized version from several reputable scooter community sources: Top PDF Downloads Scooterhelp.com Timing Disc (Official PDF)
: A standard industry-reference degree wheel that includes common timing settings for models like the Vespa 50, PX, and GS150. Jimcontent Disco Graduato (Standard Template) : A clean, high-resolution template ready for A4 printing. Blocklayer Interactive Degree Wheel
: If you need a specific diameter, this tool allows you to customize the size and text before printing. Essential Timing Settings (BTDC)
When using your printed disc, you will need the specific "Before Top Dead Center" (BTDC) degrees for your model: Vespa P125X Vespa P150X Vespa 150 (VBA, VBB, VL3) 150 Sprint, Veloce, Super Vespa PX 200 (Standard) : ~23° (A) or 18° (IT) Vespa GS150 (VS1-5) How to Use the Printed Disc
Ecco una guida completa per creare, personalizzare e stampare un disco graduato per Vespa (spesso chiamato "piattello" o "ruota freno graduata") utilizzando risorse PDF.
Questo strumento è fondamentale per chi possiede una Vespa d'epoca (es. 50 Special, Primavera, PK, PX) e vuole regolare correttamente l'anticipo dell'accensione o verificare i giochi delle luci, specialmente dopo aver sostituito il volano o la guarnizione dell'albero motore.
Il disco graduato (o "flywheel degree wheel") è un goniometro circolare che si applica sull’albero motore o sul volano magnetico. Serve a misurare, con precisione al grado, l’anticipo dell’accensione.
Le Vespe classiche (motori a due tempi) richiedono un anticipo specifico, solitamente tra i 18° e i 24° prima del punto morto superiore (PMS). Un errore di pochi gradi può causare:
Vespa speedometer housings vary by model, but common specifications include:
The classic Vespa two-stroke engine, particularly models from the 1960s through the 1990s (Vespa VNB, VBB, Super, PX, and smallframes like the PK), uses a magneto flywheel ignition system. Timing is set by adjusting the stator plate relative to the crankshaft’s rotation. Unlike modern vehicles with electronic control units (ECUs) and fixed timing maps, the Vespa’s contact breaker (points) system or early electronic ignition (e.g., Ducati Energia) relies on mechanical precision. The factory specification for ignition advance is usually given in millimeters before top dead center (BTDC) measured at the piston’s travel, or—more universally—in degrees of crankshaft rotation before TDC. For example, a Vespa PX200 may require 23° BTDC at idle.
To measure degrees directly on the engine, a mechanic needs a circular scale fixed to the crankshaft. This is the disco graduato. Traditionally, these were metal discs with laser-engraved markings, sold as part of specialist toolkits. However, their cost and scarcity drove home mechanics to craft their own—using printed paper circles glued to cardboard, then attached to the flywheel side of the crankshaft.
You can download the Vespa Graduated Timing Disc in PDF format from the following verified sources. These files are optimized for A4 paper (210 x 297 mm).