Yuil Thumbcuff Escape

Found a security weakness in the Yuil stainless steel thumbcuffs, thought I would share it with the forum:

Starting with your thumbs single-locked in the Yuil thumbcuffs (it doesn’t matter which way the keyholes are facing), simply insert anything rigid that will fit into the double-lock slot (you may have to use your toes or your teeth), and force the spring in the opposite direction that you would to actuate the double-lock (this releases the tension on the ratchet). Now pull your thumbs against the jaws and voila! The thumbcuffs pop open.

Have fun!
Jason

Hi Jason, I have also experimented with the method you talk of but watch out that you don't push the deadlocking spring too much as it will damage the normal operation of your thumbcuff.

Ian

Found a security weakness in the Yuil stainless steel thumbcuffs, thought I would share it with the forum:

Starting with your thumbs single-locked in the Yuil thumbcuffs (it doesn’t matter which way the keyholes are facing), simply insert anything rigid that will fit into the double-lock slot (you may have to use your toes or your teeth), and force the spring in the opposite direction that you would to actuate the double-lock (this releases the tension on the ratchet). Now pull your thumbs against the jaws and voila! The thumbcuffs pop open.

Have fun!
Jason

Click to expand...

Thanks for the tip, Ian. I start off by using my toes to open the right lock, always mindful of over exerting the spring, but have already noticed that the action is chunkier than on my other thumbcuffs. This I don’t really mind, as I don’t highly prize a cuff that so unabashedly plagiarizes the modern S&W product line. Whatever happened to innovation? While they’re at it, they might as well offer future models with a push-pin option.

Regards,
Jason