[Elecraft] K3 Board Flex

[Ron D'Eau Claire]

I've just been talking about copying CW in my head, but clearly I can't do
arithmetic in my head! 

We both stumbled, Rob. 

1/32" = 0.01325" = 0.8 mm

Thanks for catching it. 

Ron 

-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Rob May
Sent: Wednesday, March 26, 2008 12:30 PM
To: elecraft at mailman.qth.net
Subject: RE: [Elecraft] K3 Board Flex



1/32" = .08mm
3 mm = 1/8" approximately

I hope the flex is 1/32" and not 3mm, that's a lot!
Rob
NV5E
/waiting for my K3 and reading all the posts

> From: ron at cobi.biz
> To: wb8yqj at yahoo.com; elecraft at mailman.qth.net
> Subject: RE: [Elecraft] K3 Board Flex
> Date: Wed, 26 Mar 2008 09:50:41 -0700
> CC:
>
> Actually it has been both acknowledged Wayne and documented. Doug 
> reported it on the support reflector and several others immediately 
> investigated, including myself.
>
> Many, including myself, couldn't see the flex Doug found at first, 
> looking at the front panel almost straight on as when the K3 is being 
> operated.
>
> When I got up close, looking at the buttons obliquely from the top 
> like Don did, I can see some movement when pressing the top row of 
> buttons on the panel.
>
> I measured the amount of flex. At the point of maximum flex, the board 
> moves about 1/32" of an inch (roughly 3 mm). The board is securely 
> held in place, but the nearest supports are points about 2.5 inches 
> below and almost 3 inches to the side of the A/B button.
>
> That amount of movement wasn't enough to concern me at all. I'm not 
> aware of the button movement when operating the rig. I've seen boards 
> in aircraft systems that flexed at least that much with the vibration 
> inherent in flight, hour after hour, year after year, with no 
> deleterious effects.
>
> Still, Doug noticed it in his K3 and came up with a solution in true 
> Ham style that works for him. But, like many things, it's more like a 
> matter of personal preference than anything else.
>
> I certainly don't consider it a defect in the K3.
>
> Ron AC7AC
>

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