From: owner-ammf-digest@smoe.org (alt.music.moxy-fruvous digest) To: ammf-digest@smoe.org Subject: alt.music.moxy-fruvous digest V14 #15187 Reply-To: ammf@fruvous.com Sender: owner-ammf-digest@smoe.org Errors-To: owner-ammf-digest@smoe.org Precedence: bulk alt.music.moxy-fruvous digest Monday, December 9 2024 Volume 14 : Number 15187 Today's Subjects: ----------------- Portable WiFi â Meet Ryoko PRO ["Portable WiFi" Subject: Portable WiFi â Meet Ryoko PRO Portable WiFi b Meet Ryoko PRO http://leanbliss.best/41CcF6ORgbLfSFYcEQWEjESXCl72yL4a-9exDbX6OUNdRpehsg http://leanbliss.best/9v2ln0Q-2WKXPDTM7pCFct9oXmDKLBBcZ9jcPQof3Y711aJe e end of the stem. The SLCD is used by pulling on the "trigger" (a small handle) so that the cams retract together, then inserting it into a crack or pocket in the rock and releasing the trigger to allow the cams to expand. A pull on the rope, such as that generated by a climber falling, will cause a properly placed SLCD to convert the pulling force along the stem of the unit into outwards pressure on the rock, producing massive amounts of friction and preventing the removal of the unit from the rock. Due to the large forces exerted on the rock when an SLCD is fallen on, it is very important that SLCDs are only placed in solid, strong rock. History Vitaly Abalakov's invention of the Abalakov Cam was the first application to climbing of the principle of a cam to climbing equipment. His cams were sections cut out of a pulley wheel and bear a remarkable resemblance to today's tricams. Since these shapes were eccentric, the intercept angle of the cam changed as the cam rotates and expands. In 1973, Greg Lowe filed for a patent for a cam that had a "constant intercept" angle. Using a logarithmic spiral shape resulted in a uniform angle between the rock and each lobe of the cam; this constant angle is designed to always provide the necessary friction to hold a cam in equilibrium. Designed so that a load produces a rotational force, the logarithmic cam shape allowed for a single device to fit securely in a range of crack sizes. Modern SLCDs were invented by Ray Jardine in 1978 (US patent 4,184,657) and sold under the brand name of "Friends". Ray designed a spring-loaded opposing multiple ca ------------------------------ End of alt.music.moxy-fruvous digest V14 #15187 ***********************************************