Hi Speedy. I use one of those B&S Komatsu I/Cs on a Super Swift Big Bob from the late '80's. fitted with a couple of weird-size victor high flutes, and a hackabout reduced ejection chute, it does a surprisingly good job of mulching. Heavy motor tho- about 14.5Kg for 140cc
If the pics come out you'll see HD welding to keep the frame together!

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Last edited by tortoise2; 17/11/22 12:39 AM. Reason: photo editing