As I learned from my previous manufacturing experience and knowledge, a
threaded fastener, a.k.a. screw, has a specific torque value which
should be applied to make it secure. The value depends on the screw
design, flat head, binder head, round head, undercut, pan head, etc.
The only way to attain this value is to use a torque calibrated
screwdriver or wrench to secure the fastener. Also, depending on
application, the proper lock washer, internal tooth, external tooth or
split spring should be applied.
Additional measures may be required when the screw is used with
dis-similar materials. Hence one of the Loctite products, again
application specific, may be required.
73
Bob, K4TAX
K3S s/n 10163
On 7/25/2017 8:14 AM, Dave Belville wrote:
Hi Tom,
First let me say that I am not trying to argue with you or correct you. I
just want to share what little bit of knowledge I have.
In my many years as a master mechanic in the heavy duty truck industry, I
can tell you without reservation that unless you use physical force
(screwdriver, etc.) and turn the screw, it will not come loose from the
type of use a set of paddles on a KX2 would get and could be considered a
permanent fix. We used Blue Loctite for countless purposes and I never saw
it come loose on a truck which would have put many times more vibration,
stress and possibly heat on the fastener. Now, that being said, you need to
have the fastener clean but in the case of the KX2 paddles, it should not
be an issue. I would not recommend using red Loctite. You may not get the
fastener out even if you want to without destroying something. I know that
from experience.
As far as the design goes, I would not say it is a lousy design. I would
say that they just left a step out. They forgot the blue Loctite. Elecraft
isn't perfect, but they are darn close.
73
Dave KD9VT
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