Not the usual fare for posting but I have this new (to me) AP 400 GTO and the weather in the Toronto area is going to be glorious for the next two nights. But, I haven't received the counterweight shaft yet so rather than wait I tried to rig up my much smaller GPDX shaft to work and in doing so discovered that 3/4" plumbing pipe cut with standard pipe thread fits perfectly and is even the right size for the counterweights. This should therefore also work for the AP600 and Mach1 too since they can all use the same AP shaft. Home Depot sells nice 2 ft long pipe threaded at both ends.
In the same vein, 5lb dumbell weights fit nicely on the the pipe if you need extra ballast.
Jim
In the same vein, 5lb dumbell weights fit nicely on the the pipe if you need extra ballast.
Jim