[R-390] Removing Megacycle Change shaft

[Barry Scott]

Is there any way to turn off the AI summary at the top of the messages?

Thanks,
Barry - N4BUQ


On Tue, Jul 7, 2026 at 8:28 AM rochep--- via R-390 <r-390 at mailman.qth.net>
wrote:

> Awesome!! Will be a miracle if I get this thing back together again and
> working! (Like it was before I ripped it apart to replace a MHz gear clamp
> that would have been EASY to replace if I knew the clamp was on the
> outside!)
>
> Paul
>
> From: Jacques Fortin <jacques.f at videotron.ca>
> Date: Tuesday, July 7, 2026 at 9:24 AM
> To: rochep at comcast.net <rochep at comcast.net>; r-390 at mailman.qth.net <
> r-390 at mailman.qth.net>
> Subject: RE: [R-390] Removing Megacycle Change shaft
>
> Hello Paul,
> 1_ Clamp faces OUT.
> 2_ MHz gear mates with the INNER gear of the differential.
>
> See pictures.
>
> 73, Jacques, VE2JFE in Montreal
>
> A quick question for gear re-assemblers. For the MHZ gear (on MHZ shaft)
> Chapter 10 of manual says the clamp faces IN when assembling (page 10-15)
> but another section of Chapter 10 shows the clamp facing OUT. Chapter
> 6.3.19 also says the MHZ gear clamp faces OUT.
> I ask because when the clamp is facing IN I am unable to merge the gear
> with the INNER gear of that big “differential assembly” (which uses the
> detent spring).  Regardless of clamp in or clamp out, does the MHZ gear
> merge with the OUTERMOST gear of that differential assembly (as does that
> small gear just above the MHZ gear) or does the MHz gear merge with the
> INNER gear of the differential assembly? It looks to be inner from the
> pictures, but hard to tell for sure.
> Paul
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