Re: 4 wheel surrey
They come in many configurations and can be modified depending on your tools. Need to look through a Techumseh Peerless catalog. Mine has about a 30'' track. Northern Tool offers one also. Just a thought, but you could mount the wheels right onto the ends of the axle along with the pedal drive sprockets and the motor drive sprocket. Add a disc brake kit like on a go-kart and no need for any other brakes. I also like the push trailer idea but pushing around turns may be cumbersome, along with the added overall length.