Gravity only nerds this post does not apply to you so do not read, it will only confuse you!
Was able to mock up the whole wheel with two rods attached to each weight but that caused WM2D to crash so I had to simplify the arrangement with only one rod but that worked pretty well.
We can see the reason B went to two rods on each weight so as to bypass the exact central hub creating a straight shot to the other side of the wheel.
![Image](http://i.ibb.co/SdGSvLR/MTHard137.jpg)
![Image](http://i.ibb.co/bRXzrN4/My-project.jpg)
![Image](http://i.ibb.co/DQjs9dj/Working-Model-MT13721122-M-2022-02-12-13-52-18-Adobe-Creative-Cloud-Express-1-Adobe-Creative-Cloud-E.gif)
With the rigid rods the weights are very well controlled with no wild bouncing at least in simulation. A rod connects the weight at 12:00 with the
weight at 6:00 and so on around the wheel. Fortunately B said his wheel hub was full of holes so this allows for the rods to pass through!
Thank the lord for small favors!
The rods sliding back and forth across the hub make a very convenient pick off point to reset the internal weights which are not shown.
These overbalanced rim weights DO NOT POWER THE WHEEL but are only used to reset the weights of the internal prime mover mechanism which is again not shown.
With the weights only acting on the rods at 90 degrees to wheel rotation there is no cross coupling effect as long as the angle remains 90 degrees.
For every weight retracting, the weight on the exact opposite side extends to eliminate any cross coupling - very ingenious on the part of B!!
An extending weight will slow the wheel slightly creating a higher moment of inertia but is then exactly cancelled by a retracting weight lowering the moment of inertia so the moment of inertia remains constant whenever or wherever a weight retracts.
Another great feature is that this arrangement will work just as well in the opposite direction, making it perfectly suited to the bidirectional wheel.
Now I don't want to hear any complaints as this concept was forced on me by Fletcher so all complaints should be directed to him!!
A very complete study on the MT137 wheel was done in four parts by John Collins here:
http://www.theorffyreuscode.com/html/mt_137_a.html