[R-390] Removing Megacycle Change shaft

[rochep at comcast.net]

I have panel off and waiting for a gear clamp off a MC shaft assembly I just got on eBay.

Going forward, is there a COMMERCIAL source who sells clamps that would work as gear clamps, (Bristol or hex or slotted) for other clamps that might break?

Thanks for the help. I might need help with aligning this thing to read correct frequency when I am done, lots of gears! But I will read the literature and hope I get it. At least now that this is apart I can clean off the gears/gear teeth with isopropanol and “re-lube”. I assume just put light oil on the shafts themselves, not the teeth on the gears?

Paul

From: r-390-bounces at mailman.qth.net <r-390-bounces at mailman.qth.net> on behalf of Jacques Fortin via R-390 <r-390 at mailman.qth.net>
Date: Wednesday, June 17, 2026 at 8:17 AM
To: Paul Roche via R-390 <r-390 at mailman.qth.net>
Cc: R390A <r-390 at mailman.qth.net>
Subject: Re: [R-390] Removing Megacycle Change shaft

Chapter 10 again: Read everything to the end !
Jack14 iPhone 16e

Le 16 juin 2026 à 23:09, Paul Roche via R-390 <r-390 at mailman.qth.net> a écrit :


<image0.jpeg>
<image1.jpeg>

Sent from my iPhone
I dont know if you can get see this. Now what? I see how to remove the KHZ gear but not sure about the clutch disk and the “gear” above it.

Paul
> On Jun 16, 2026, at 10:09 PM, Jacques Fortin via R-390 <r-390 at mailman.qth.net> wrote:
>
> Here is the needed clamp.
>
> 73, Jacques, VE2JFE in Montreal
>
> Hello Nick,
> Good try, but the hole on this one is too big (0.435) the one to be replaced
> measures 13/32" (0.406).
> <00-99-SM-B-178486-CLAMP.pdf>
> ______________________________________________________________
> R-390 mailing list
> Home: http://mailman.qth.net/mailman/listinfo/r-390
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:R-390 at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html

______________________________________________________________
R-390 mailing list
Home: http://mailman.qth.net/mailman/listinfo/r-390
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:R-390 at mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html