[R-390] Removing Megacycle Change shaft

[Fred Moore]

Hi Barry, 

Congratulations!  I've been reading the mail, because I have an R-390 gear
train which had been partly disassembled and is no longer synchronized.  I am
setting that one aside for now.  But you have inspired me to tackle it later. 


-Fred 

------ Original Message ------
Received: Mon, 29 Jun 2026 02:36:45 PM GMT
From: rochep--- via R-390 <r-390 at mailman.qth.net>
To: "r-390 at mailman.qth.net" <r-390 at mailman.qth.net>
Subject: Re: [R-390] Removing Megacycle Change shaft

Just a quick follow-up: I have all gears back together and motion is OK. I
have a couple of gear clamps “tight” but still the cams don’t move along
with the gear. I have new clamps on the way so when I break one…  Learning
alot; those split gears are a pain to install. Getting there. I really wish I
didn’t take it all apart, but what’s done is done.

From: Barry <n4buq at knology.net>
Date: Tuesday, June 23, 2026 at 11:35 PM
To: PAUL ROCHE <rochep at comcast.net>
Cc: Jacques Fortin <jacques.f at videotron.ca>; R-390 Mailing List
<r-390 at mailman.qth.net>
Subject: Re: [R-390] Removing Megacycle Change shaft

BTW, great job cleaning those gears!
Barry - N4BUQ

> Thank you all so much, this is the gear I am talking about (I am holding
it);
> doesn’t quite make it into the bushing when meshed with rear small gear of
gear
> assembly #42. I will study Jacques pictures tonight. Yes, the document is
great
> to show you where to put things.
>
> From: Jacques Fortin <jacques.f at videotron.ca>
> Date: Tuesday, June 23, 2026 at 12:14 PM
> To: 'Barry' <n4buq at knology.net>; 'PAUL ROCHE' <rochep at comcast.net>
> Cc: 'R-390 Mailing List' <r-390 at mailman.qth.net>
> Subject: RE: [R-390] Removing Megacycle Change shaft
>
> Hi Barry, Paul,
> Not that simple from the Y2K-3a Chapter 10.
> It make things easier to have another R-390A properly assembled nearby...
> I already sent some pics to Paul, if he still experiencing assembly
problems, I
> can take more pictures from my spare (properly assembled) RF deck.
>
> 73, Jacques, VE2JFE in Montreal
>
> -----Message d'origine-----
> De : r-390-bounces at mailman.qth.net <r-390-bounces at mailman.qth.net> De la
part de
> Barry via R-390
> Envoyé : 23 juin 2026 11:31
> À : PAUL ROCHE <rochep at comcast.net>
> Cc : R-390 Mailing List <r-390 at mailman.qth.net>
> Objet : Re: [R-390] Removing Megacycle Change shaft
>
> There is a document in the archives that outlines exactly how to assemble
the
> gear train.
>
> https://www.r-390a.net/R-390A-Gear-Rebuild.pdf
>
> 73,
> Barry - N4BUQ
>
>
> ______________________________________________________________
> 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