[R-390] Gear clamps

[Stan Gammons]

Hi,

I have a machinist friend, but I was going to see if I could find something that would work or try to make it myself before asking him to make them.  I  think the clamp show  in the link below will work if I drill it to the correct diameter. I have a drill press.  One of the mini lathes would be nice right about now :)


73

Stan
KM4HQE

On October 12, 2017 9:43:38 AM CDT, Bob kb8tq <kb8tq at n1k.org> wrote:
>Hi
>
>If you have a buddy with a small CNC setup, they are the size item that
>makes
>a fun project. There’s a lot of stuff that a little desktop just can’t
>do, but this is 
>one of the things it can.
>
>Bob
>
>
>On Oct 12, 2017, at 10:24 AM, Barry <n4buq at knology.net> wrote:
>> 
>> If you have a drill press, it's not too terribly difficult to make a
>two-piece clamp similar to that but out of flat aluminum stock of
>sufficient thickness.  Two pieces drilled and tapped correctly and then
>clamped together with a small spacer (using the screws you'd use to
>clamp it to the gear), then drilled (and reamed if you have the right
>reamer) to the correct size works fine.  I had an R390A with such a
>clamp (I didn't make it but it didn't look that hard to make).
>> 
>> Thanks,
>> Barry - N4BUQ
>> 
>> ----- Original Message -----
>>> From: "Stan Gammons" <s_gammons at charter.net>
>>> To: r-390 at mailman.qth.net
>>> Sent: Thursday, October 12, 2017 8:55:58 AM
>>> Subject: Re: [R-390] Gear clamps
>>> 
>>> A list member contacted me off list to say he used a split clamp
>from
>>> Fastenal for the gear clamp.  I'm not 100 percent certain, but I
>believe
>>> this is what he was referring to. No, it's not original, but it
>looks like
>>> it will work if one drills the hole to the correct diameter.
>>> 
>>> https://www.fastenal.com/products/details/4142507?term=Sp-4-a
>>> 
>>> 
>>> 73
>>> 
>>> Stan
>>> KM4HQE
>>> 
>>> 
>>> On October 10, 2017 7:14:13 PM CDT, Stan Gammons
><s_gammons at charter.net>
>>> wrote:
>>>> Hi Everyone,
>>>> 
>>>> I have all of the paper caps swapped in the R-390A I'm working on.
>Now
>>>> I've started working on the RF deck. I knew it had 1 broken gear
>clamp
>>>> before I started. After I started tearing the gear train apart to
>>>> replace the clamp, I found another broken clamp.  Does anyone have
>any
>>>> of the larger size, approx 25/64" diameter hole, clamps you would
>be
>>>> willing to sell?  I need at least 2 clamps.
>>>> 
>>>> Thanks
>>>> 
>>>> 
>>>> 73
>>>> 
>>>> Stan
>>>> KM4HQE
>>>> 
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