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Thanks @rcgrier3406. Old school is best school. XD
I just had an ideal of where to mount the motor and side actuator rods: up on the top center beam. It’ll be risky like an interference type engine but a fun idea to watch the counterweight and drawn rods trade space and the leverages versus pull should work at that direct angle.
Got the frame updated IRL. I figure under a kilo of ballast as 1×1 plates is needed (931g). Still have to devise the motorization but even by hand, the movement is smoother.
It still needs some adjustments but it’s working with the L motor drive. It will be motorized for HG show.
I’ll need to make a video of the operation. The motor draws in the twin teethed arms to raise the bridge. Added a light at the top front to glow red when in operation. It has a manual safety mode where one can rotate a gear a hundred times LOL or another manual mode by removing the worm gear. I figure a little more ballast and some PF extension wire to put the control in the cabin.
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