When you find a source let me know if they do similar Piper Towbars: I'm having to have one made..............
Main problem we have is we need to push as well as pull so the towbar must have a significant telescopic spring (damped) effect in both push and pull mode to avoid damaging the nose leg.
It also needs to be significantly longer (2 metres) than a hand towbar to avoid accidentally exceeding the nosewheel travel while manoeuvring, if the tractor suddenly lurches towards the a/c while pushing backwards.
Happy hunting
Cusco
