Figured out how to wind the coil in less than 3 minutes so I made a video to help others.
I have done a lot if them and used everything from drills to zip ties to do them. Tried this and it was by far the easiest and quickest way I have found yet. Is the trx70 recoil different? I have also done a few 4-zinger coils.Good video. You make it look easy. Those springs are a PIA to wind up. Have you ever done a TRX70 pullstarter spring?
Looks like the zinger coil. I used the drill method. Just be very careful and go slow. The drill can snap the coil if you go to fast.