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Here, we start to get into the complexity of the 2-stroke engine! But yet, it is not that complicated to understand. I suggest you approach simply, and step by step what the diagrams are, what influence does this parameter have on our engines, How do we measure them? With what? I even suggest you MAKE a graduated disk for cheap… We will cover EVERYTHING I tell you! ???????? RETURN OF THE SCOOTFAST PROMO CODE: SIMON02 ☕To follow me on INSTAGRAM, and ask me questions: https://www.instagram.com/p/CD1_0Aini... ????To support him: the tipeee link: THANK YOU!! https://fr.tipeee.com/le-chant-du-cli... ???? Small links to essential tools for disassembling/reassembling your two-wheeler: the essential 1/4' torque wrench: https://www.amazon.fr/gp/product/B08Z... the 1/2' torque wrench: bigger but also useful: https://www.amazon.fr/gp/product/B01N... A very good electronic caliper and always useful for this type of measurement: https://www.amazon.fr/gp/product/B082... Booster variator block: https://www.amazon.fr/gp/product/B07J... Clutch disassembly key: https://www.amazon.fr/gp/product/B071... Ignition lock key: https://www.amazon.fr/gp/product/B07N... The ratchet wrench set with bits TO DISASSEMBLE EVERYTHING: https://www.amazon.fr/gp/product/B07B... the vise you need (I've lost count of how many times I use it: essential!): https://www.amazon.fr/gp/product/B01M... and to adjust its variation to perfection, a box of DOPPLER rollers: https://www.amazon.fr/gp/product/B07G... ⚙ Small config. 50CC that works WELL: Good parts to optimize your scooter, easily: 50cc POLINI cast iron kit: https://www.scootfast.net/kit-cylindr... YASUNI R exhaust: https://www.scootfast.net/yasuni-exha... 17.5 PHBN carburetor: https://www.scootfast.net/carburateur... POLINI Hi-speed variator: https://www.scootfast.net/polini-vari... programmable rollers to adjust the variation to the hair: http://www.mir35.com/galet-programmab... DOPPLER air box (no more noise, performance gain ;!): https://www.scootfast.net/boite-a-air... With that, it will already be not bad! Config' in KIT 70: MOST 70CC Kit: https://www.scootfast.net/kit-cylindr... Carburateur dellorto 19mm: https://www.scootfast.net/carburateur... 00:00 Introduction and video plan 01:38 1 - Theory: What are diagrams? We EXPLAIN! 09:47 2 - a/ Making a graduated disk: for ketchi! 12:00 2 - b/ How to measure diagrams from a disk 17:17 3 - Measuring diagrams and comparison: ALL my cylinders go through it! 22:06 Conclusion and SCOOTFAST PROMO CODE