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If it were me i think i'd try adapt a motorbike carb to it. Honda 50cc are about the smallest that i know of, they are 4 hp, so they should be a good match.

A honda recon 250cc generates 15.6hp at 6500 rpm, therefore the same engine will generate 1.08hp at 450rpm because 6500/450=14.4 and 15.6/14.4= 1.08hpI fitted a mikuni vm22 to my honda fourtrax, so it will run, but you might want a larger model such as vm24.

wolfram alpha says the volume of a cylinder of 4" diameter by 4" length is 6.28 cubic inches or 103cc

Quote from: gipetto on June 04, 2024, 03:10:41 PMwolfram alpha says the volume of a cylinder of 4" diameter by 4" length is 6.28 cubic inches or 103ccWho or what is wolfram alpha? Pi * r squared * h says the volume is 50.272 cu inch or 823.81 cubic centimetres