Originally Posted by
Peter Laidler
NZ'er Bill Mxxxxxxx designed a system based on formula ? racing car exhausts where the baffles are on spring loaded rods and allowed to move forwards and rearwards slightly, to reciprocate under the forward facing and variable gas pressure/load and effectively act as a shock absorber to the gas. After all, springs are just another means of absorbing energy (and storing it of course) which we NEED to do with our silencers. You need to meet up with Bill again Woodsy.