Restauración y preparación de una Derbi Variant start.

We've restored a Derbi Variant Start. We also tuned the engine to get more power while keeping costs to a minimum. The engine had a problem: the exhaust and transfer ports weren't opening fully. The cylinder head also had too much compression. We've corrected these issues. We've also installed a reed valve assembly with two different resonance settings. Finally, we installed a rectifier bridge to accommodate LED lights. Safety first! 😊👍🙋🏻‍♂️