Are Complex Mechanical Doorknobs Like Those in Movies Realistic?

AI Thread Summary
Complex mechanical doorknobs like those depicted in movies such as Indiana Jones and National Treasure can theoretically be created, but they are not commonly found in real life. Companies like hiddenpassageway.com typically use simpler lever mechanisms for practicality. While intricate designs are possible, they require significant investment and creativity. However, increased complexity can lead to higher chances of mechanical failure. Ultimately, while these elaborate mechanisms can be designed, their practicality and reliability may be questionable.
reinaldo
Messages
33
Reaction score
0
Hey Everybody! this is an unusual question!...

Do you know if it actually Exist those Complex Mechanical "doorknobs" like the ones you see in Indiana Jones and National Treasure?...do they exist?...can they be done?...cause the company hiddenpassageway.com builds hidden passages for homes but the doors are opened with simple lever mechanism...but i mean does complex mechanisms seen in those movies could be done??...
 
Engineering news on Phys.org
You can make the trigger mechanism as simple or as complex as your imagination and wallet can handle. Just keep in mind that the more complex it is, the more prone it is to failure.
 
After over 25 years of engineering, designing and analyzing bolted joints, I just learned this little fact. According to ASME B1.2, Gages and Gaging for Unified Inch Screw Threads: "The no-go gage should not pass over more than three complete turns when inserted into the internal thread of the product. " 3 turns seems like way to much. I have some really critical nuts that are of standard geometry (5/8"-11 UNC 3B) and have about 4.5 threads when you account for the chamfers on either...
Thread 'What type of toilet do I have?'
I was enrolled in an online plumbing course at Stratford University. My plumbing textbook lists four types of residential toilets: 1# upflush toilets 2# pressure assisted toilets 3# gravity-fed, rim jet toilets and 4# gravity-fed, siphon-jet toilets. I know my toilet is not an upflush toilet because my toilet is not below the sewage line, and my toilet does not have a grinder and a pump next to it to propel waste upwards. I am about 99% sure that my toilet is not a pressure assisted...
Thread 'Physics of Stretch: What pressure does a band apply on a cylinder?'
Scenario 1 (figure 1) A continuous loop of elastic material is stretched around two metal bars. The top bar is attached to a load cell that reads force. The lower bar can be moved downwards to stretch the elastic material. The lower bar is moved downwards until the two bars are 1190mm apart, stretching the elastic material. The bars are 5mm thick, so the total internal loop length is 1200mm (1190mm + 5mm + 5mm). At this level of stretch, the load cell reads 45N tensile force. Key numbers...
Back
Top