CG Showcase of Overbalanced Wheel

[helloha]

b-VII. trying my hands on wm2d, Roberval Balance vs See-Saw Balance v24

[lumen]

Possibly something using a Roberval lift?

[helloha]

Possibly something using a Roberval lift?

i will try to sim this design first and let's see how it goes 

[helloha]

b-VIII. trying my hands on wm2d, magnet affecting the weight of object 08

- sim an Electrostatic Artificial Gravity environment with sensor to control the strength of the electrostatic force

[helloha]

Analysing of Bessler's Clues 67.
< Little Info, Small Bearing Diameter >

"The diameter of the wheel is about twelve feet, and as well, the bearing was quite thin, about one quarter of an inch and only a sixth of its length was subject to friction." - eyewitness clue

"Through the centre of this wheel or drum runs an axle of about six inches diameter, terminated at both ends by iron bearings of about three-quarters of an inch diameter upon which the whole thing turns." - eyewitness clue

- collection of bearing diameter from eyewitness account

1. quarter of an inch
2. three-quarters of an inch

- based on above, although slightly different reading from eyewitness's account, but nevertheless the common factor for the bearing is the small diameter

- the diameter of the bearing is very small, if compared to 9-12 feet diameter wheel (also take into consideration that the wheel, including all the weights, might be heavy, assuming to be 700 pounds or 317kg)

- "only a sixth of its length was subject to friction", a possible indication that only a small portion of the length of the bearing is in contact to the support,

- plus small diameter, the friction between the bearing and the support is kept to its minimum, more efficient

- but in doing so, introduce the bearing to heavy tension a.k.a wear and tear (this is a double-edge sword situation, gain one, loss one)

- refer to image for information

- so, the question is ... why choose 'minimum friction (better efficiency)' running the risk of 'heavy wear and tear (short life-span or easy breakdown)' ?