Revision 2 Prototype Progress

Hey, it’s been a while since we last updated!  We ran into a few issues.  First, I underestimated the amount of flex in a chain drive system.  We were going to use a chain final stage to direct drive the axes, but it is way to bouncy.  Second, I seriously underestimated the amount of torque required to direct-drive the axes.  By a factor of 10.  Unit conversion error.

So it was back to the drawing board.    We took the linear actuators from the V1 frame and had some 3/8″ brackets cut to hold them on the frame:

V2 Frame with Brackets

The arms mount together with a custom shaft and bearing pack assembly:

V2 Drive Shaft

And then came assembly!  Here’s the yaw arm, mounted in the basement:

Yaw Arm Mounted

And the full assembly, all put together:

Version 2 VR Motion Simulator

How rigid is it, exactly?  *Almost as good as we want it.  The bearing assemblies have a little too much deflection.  We’ll fix that in the next revision.

And finally, here it is moving (it’s controlled by a joystick in this video):

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