her is a pic of a small volume setup -note tho it is fairly long - and had fairly open outlet engine was ZDZ60 -turning MenzS 24x10 at 6500
Did you get any gain in power with this setup, or does the muffler only reduce noise? A menzS 24x10 at 6500 RPM is "good power" for a 60cc with a home-made muffler/canister!