The noisy exhausts are too noisy for my personal taste, to book for circuit To get a mount on the tubes before I exhaust of a manufactured machine a 63,2mm diameter matrix for the reformed tube silencer at the right diameter to inflate the tube 0.3mm / 0.4mm this is done easily in cold with tallow fat. rattling problem solved ignition, and the needle of the rev counter is faster, I plan to put the noisy with additional soundproofing.
