Originally Posted by
veganbikes
A recumbent tadpole trike would be the best solution. An upright trike is less stable and training wheels by and large are for parents who don't understand how to balance and force their kids into the same. There are some I have seen for older kids with developmental delays but nothing I can recall that I would put on a 3 speed SA hub and have it work well.
Agree with this. Upright tricycles are less stable than bicycles. I have seen pictures of racing tricycles cornering and the riders have to lean out past the rear wheel to keep themselves upright. The same thing would happen with "training wheels". For safety you need a much lower centre of gravity