Hi Paul, Kick me an email sometime about your brother's kart........my '61 Wasp has a few upgrades but could answer some questions for you. I had spoken with Tommy a few years back when I was restoring this kart, he had verified it was an actual '61 dual eng model (the pads are authentic). Neat guy ...

Hi Paul, Those old yard sale finds can be fun, I use those saw engines for my kart because they're relatively cheap and adapt well using regular kart engine bits. The stepped crank ends can be a small hurdle, but there have been work arounds to use them with a regular, 5/8 size clutch. pm me or emai...