Ive just found your posting about your homemade go-ped.
I've been thinking about doing something like that for a while. I've got myself a bmx style scooter with brakes and I've got a 34.4cc Robin brushcutter engine that puts out around 1.9hp (I beleive a 25cc puts out around .9hp). If youve set up your web site id love to know the address or if you could email the plans or even just some info, like what gear ratio it turns the back wheel at, does it just run a shaft pressing onto rear wheel or do you use gears/chain drive. Any info/photos would be a great help.