Motor Termoacústico horizontal (Thermoacoustic stirling lamina flow engine)

My first lamina stirling engine model from scratch. It has worked at first attempt. Still too slow. Planing some changes soon to speed it up! Please post your comment. Meu primeiro protótipo desse tipo de motor. Funcionou de primeira. Agora farei algumas mudanças para tentar aumentar a RPM. Aceito dicas!!!