Don’t throw it away! You can make a universal engine turning tool out of it. We turned a 1/2˝ drive extension down in the lathe to fit the inside the bore of the tool, cut it to fit the length, then plug welded the end. Bolt it to the balancer and use a 1/2˝ ratchet...
That particular system requires a SMPTE signal in order to drive it to keep it in sync, so what we actually do is as we're playing the movie, we lock directly into the movie for all of the motion effects and everything else that we have to play as far as the motion files and spec...