Yep, nylon contains water and will dry out overtime. Nylon is fairly pliable when the moisture content is "normal", but when it eventually drys out it tends to get brittle (for safety: props - about a year in the midwest with our high humidity). I use to boil my nylon props at least once a year at the beginning of the flying season - if the plane survived the previous one :^)
For low stress applications, this "drying out" is usually not a concern. Shock loads from prop strikes or high rpm, and control horns from slope pilots' impacts . . . err . . . landings, could cause failure. Not the latest thing . . . it's an old thing. --- In [EMAIL PROTECTED], "Scott Hewett" <[EMAIL PROTECTED]> wrote: > > Can someone please shed some light on the point in "boiling" nylon servo arms, clevises, control horns and the like in water? I'd never heard of such a thing before, but it seems to be the latest thing to do amongst some flyers. I was a guest recently at the Northern California Slope Soarers site near Cordelia Junction/Benecia, and was amazed to see a bunch of guys huddled around in a circle, boiling nylon clevises, etc, in a pot of water over a can of Sterno. The field marshall gave me a brief explanation about flexibility/shear value, etc. So, what gives? Is this worthwhile trying on my Gentle Lady/RnR Nova? > Thanks for any replys on-line. > Raz > RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. Email sent from web based email such as Hotmail and AOL are generally NOT in text format
