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.
"I'll be back in 30 seconds wit your sawdust, madam. Just let me ride once round the block."
@Squaredisk 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.