[R-390] R390/URR and R390A/URR clamp screw torque

[Perry Sandeen]

List,
I was trained on the R390A in USAF tech school in 1963. There was no training or information given about clamp torque.
However list member Glen Scott who has done total remand (including complete panel restoration) of the R390A for years as a living, posted on this list his experience.  It involved using a torque screwdriver and the value he found optimum for no slippage or clamp  breakage.
I don't remember when it was posted so if someone would re-posit it, it should provide the necessary information needed.
73,
Perry KM6FQV