I haven't noticed any looseness in mine since tightening them a few months after the initial build, and I did some testing of the "drift" mods that had me cycling the K2 finals over and over again hard enough that the heat sink was too hot to leave my hand on for any length of time.
So I'd guess that you're fine, now that you've done the initial re-tightening. Checking heat sink screws whenever I have a rig open is sort of "second nature" to me after servicing gear professionally for a few years. On the other hand, you don't want to crank 'em down so tight you damage the gaskets and washers on the hardware. Snug 'em but don't do what I like to call "Godzilla" them <G>. Ron AC7AC -----Original Message----- Subject: [Elecraft] KPA100 Tightening the finals... Just finished the KNB2 for my K2 (a birthday present from the in-laws -- yea!) and while I was inside the K2 to install it I tightened up the screws on the KPA100 finals per Elecraft's recommendation, since I've been using the radio for about 6 months now and this was probably overdue. They all took a little snugging up, maybe a little less than 1/8 turn. My question is: will they stay tight now for all time? Or do I have to check them now and then? What's the theory on the thermal cycling here and how it effects these screws? Just wondering... -- Ward / KG6HAF _______________________________________________ _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
