JRiddle
Posts: 36
Joined: 12/4/2008
From: Brevard County, Florida, USA
Status: offline
|
Bondage fantasies vary. At this time, mine lean toward electrical/mechanical release. While a trustworthy person would be the best release method, this is not currently available to me. In the past, a variety of methods have kept the keys from me for a little while. Recently, a new concept crossed my mind. Use an electro-mechanical device to control the release instead of the keys for release. One example of such a release was provided by Irishm57 on these boards. Several times, I have seen fairly large electric magnets used to hold the subject in place. This was my inspiration.
My concept is simple. If electric magnets can hold acceptably, why not use pneumatic (compressed air, measured in Pounds per Square Inch or PSI) latches. This could result in several improvements. The first is holding potential. A small electric solenoid valve can easily control several gallons of compressed air at over 150 PSI (10 kg/cm^2). The latch could use an air cylinder to move a latch pin, deadbolt, or other mechanism to hold a person bound. The latch can be made to hold more securely than a pricey electric magnet and do so with a lower current draw. Air cylinders have excellent mechanical advantage and power to weight ratio only exceeded by hydraulic systems (1500 PSI and above). The reliability when used in industrial applications is staggering. With redundancy, risk is reduced. By ensuring all likely failures result in release, safety is maximized. The final improvement is greater separation of electricity from the bound subject. No electrical devices are directly connected to the sub. The price is not bad either. The air cylinders cost $15 each and the air valves were $30 each. For a total of about $100 (the cost of one magnet) I have 2 functional latches. With this design, the sub is held securely until instantly released without fumbling with keys at the appointed time.
My air cylinders require above 30 PSI of positive air pressure to extend. A heavy steel spring retracts the piston rod. In industrial applications, air cylinders can last for over 100,000 cycles. The most likely failure is a small air leak. If not repaired, a small air leak will eventually result in a major air leak which causes the piston to not extend. These failures of the air cylinder will result in air leaks and early release. Only through extreme long term negligence and abuse in industrial settings does the piston and rod fail to move. The piston moves until the lack of oil and excessive debris cause the piston to seize up. A seized piston is both preventable and avoidable. By careful inspection, cleaning, and lubrication, this can be avoided. By using 2 cylinders (one for each wrist latch), a failure here is even less likely to fail to release.
The air valves are also doubled up to prevent a failure to release. The air valves require 12 volts at 250 mA to extend the air cylinders. Each valve acts like a 2 way valve. The common connection goes to either the normally open, or normally closed path controlled by the electric solenoid. By connecting the common ports of both valves together and to the pistons, both latches will always work in unison. With a muffler on the normally open port, no electricity should always result in the pistons moving to or staying in the retracted position. Both normally closed ports are connected to a common air supply tank. If the valves ever operate opposite each other, the air supply will end up getting routed to a muffler and vent out rapidly. This may be caused by either a valve or electrical failure, but will always result in release.
Additional safety precautions can be taken. I have an intentional small air leak to ensure that the air supply will eventually be depleted. The valves receive their electrical power from a 7 AH sealed 12 volt battery. This power is controlled by relays connected to multiple appliance timers. Everything is redundant. The current air supply tank is 7 gallon, but will be reduced to less than one soon. The pressure is regulated to only 60 PSI. This is just above the necessary pressure to swiftly operated the valves and pistons. In the future, mechanical wall thermostats will be used to interrupt the current in case the room temperature gets too high or low. Too low is bad due to hypothermia concerns. Too high is bad in case of fire. Both thermostats have been purchased. It is only a matter of wiring them into the circuit and verifying correct operation. With these precautions, I hope to never become bound permanently.
One interesting oddity of this design is the power in which the latches operate. A medium thump is heard. The jolt can be felt throughout the sawhorse. When they engage or disengage, the subject knows it instantly.
Pictures of the rough draft may be seen at this link. Sorry for hosting them on such a slow picture hosting service. In the future, I will not use image shack.
http://profile.imageshack.us/user/J_Riddle
Please do not focus on the lack of adult supervision in it's use. This is a risk that I seek to mitigate to the lowest possible level, but will continue to accept until other options become available. If you can avoid this risk, please do so.
This idea came from one person without much input from others. Since I designed and built it, I may be biased towards it and could have overlooked important details in my enthusiasm. This is why I am posting the idea here. Please critique the concept and design. Any suggestions for better safety or improved function are welcome. Thank you for your time.
_____________________________
This post has been brought to you by an inexperienced amateur. -Jeremiah
|
Pneumatic Bondage Latch anyone? - 
Profile
New Messages
No New Messages
Hot Topic w/ New Messages
Hot Topic w/o New Messages
Locked w/ New Messages
Locked w/o New Messages
Post New Thread