Actually, the problem I had with the copilt was, on my particular bike, the kids feet can easily be too close to your heel in the up-stroke, which presumably you can more easily avoid with the Hamax, by choosing where in the seat tube to put the clampy thingy.
Actually, the problem I had with the copilt was, on my particular bike, the kids feet can easily be too close to your heel in the up-stroke, which presumably you can more easily avoid with the Hamax, by choosing where in the seat tube to put the clampy thingy.