Guessing if you could set up a second drivechain system with a back wheel then you would have a mobile pencil sharpening business just waiting to happen.
I like your thinking Squaredisk. Get your application in for the next series of Dragon's Den, they'll be throwing their money at you.
@Tadpole started
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Guessing if you could set up a second drivechain system with a back wheel then you would have a mobile pencil sharpening business just waiting to happen.